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Running 10: Zhou Shen challenges the Olympic champion, contracts the whole period to watch, and the hot search topic breaks ten million seconds! _ Lv Xiaojun _ Chang Ning _ Guest

Original title Running 10 Zhou Shen challenges the Olympic champion contracts the whole period to watch and the hot search topic breaks tens of millions of seconds! The tenth program of "Running Bar 10" was still filmed in Changji Xinjiang At the beginning of the program the whole staff appeared in Changji Stadium The powerful singers in the music world Zhou Shen and Bai Lu appeared in the same frame dth drill bits wearing a sportswear a white coat with red sports pants showing a special style of painting with a sense of CP They also put out the shape of "white crane shining wings" He looks very handsome in everything All kinds of flying kicks make all the guests laugh which is worthy of being the laughing point of the whole program Where there is Zhou Shen there will be laughter which can bring us unexpected surprises every time This time unlike previous programs the running man family will face the challenge of "kicking the hall" That is to say the flying guests in this program are all here to "smash the field" and fight with the six champions The first flying guest is weightlifter Lv Xiaojun The program also took Zhou Shen white deer baby as an example After watching his personal short film Zhou Shen's face was full of envy When shaking hands with Lv Xiaojun the program also gave Zhou Shen the word "seconds" In fact it's not that Zhou Shen is afraid to meet with athletes but out of respect You know Zhou Shen is the only image spokesman for the Beijing Winter Olympics Expand the full text In front of the sportsmen there was no star shelf at all and his face was full of smiles Comedian Sha Yi deliberately acغير مجاز مي باشدted Lv Xiaojun and pretended to be very familiar with him Once again he was a real "iron fool" The second was Xu Mengtao who had just participated in the skiing ceiling of "Riding the Wind and Breaking the Waves 3" not long ago Sigong regretted to withdraw from the competition which became a difficult feeling in the hearts of many audiences Her departure caused Cyndi Wang's team to dance again overnight Unfortunately she sprained her foot For Mango TV without the pistachio Xu Mengtao it was really a big loss I never thought that she would be in the same frame with Zhou Shen in Running Man 10 One is the famous pistachio the other is the little prince They are bound to put on a good show The third is the champion of the women's volleyball team Zhang Changning who is 195 meters tall Zhou Shen is very cute He shakes hands with her while jumping In front of Zhang Changning Zhou Shen is more like a middle school student Zhang Changning also deliberately lets Zhou Shen clap hands with himself but it is not difficult for Zhou Shen to jump and easily touch his opponent's right hand It can be seen that Zhang Changning is also a die-hard fan of Zhou Shen Otherwise he would not only interact with Zhou Shen The fourth one is Gao Tingyu a flying man on ice and the fifth one is Liu Huihong a good friend of Jay Chou He reproduces the famous fitness scene and is known as the Godfather of fitness From a certain point of view this program should be called "Athletes Special Show" As soon as he came out he made a big move The muscles on his body successfully attracted Zhou Shen's attention Finally the finale was the good friend of the champions Xie Na's apprentice and Zhou Shen's good friend Wei Daxun His style was extremely different He looked more like the silly son of the landlord's family Before opening the game Liu Huihong led the whole team to warm up and danced the popular "calisthenics" again The background music is also Jay Chou's masterpiece "Compendium of Materia Medica" Zhou Shen has learned it well and every movement is in place which is in sharp contrast to other guests The plot of Zhou Shen and Liu Huihong dancing "aerobics" is enough to be recorded as a famous scene in the Chinese music world The first game is called'Summit Duel ' The two teams decide their own order of playing The members with the same serial number will have a one-to-one battle They will tear up their nametags and decide the size of their nametags by drawing lots The more they tear up the more chances they have to win After listening to the rules of the game Zhou Shen shouted' Is there only one game recorded today ' No one expected that the program group would play so much at the beginning

Sha Yi was the second to appear on the stage His opponent was Zhang Changning He was led by the nose from beginning to end He had no initiative at all He lost without any suspense Invisibly he also created a lot of famous scenes in the circle Zhou Shen played in the third round against weightlifter Lu Xiaojun At this time Zhou Shen's strength was far less than that of the other side but he had a special Olympic spirit If you want to challenge choose the character of the king level Only when the strong fight against the strong can you rub out different chemical reactions After the start Zhou Shen is particularly methodical He used the legendary'Lion Roaring Skill 'to give the other side a blow first He pulled the momentum full and his hands and feet were extremely flexible But Lv Xiaojun did not play cards according to the routine He grabbed Zhou Shen's hand and refused to let go When the other side was not paying attention dth button bits his firepower was all open Netizens also called it "deep stubbornness" In order to help the team win the honor Zhou Shen used all his strength and was thrown one after another which made people feel very distressed Although he lost to the other side it was still glorious to lose As long as he worked hard after all overburden drilling systems the other side was an athlete In the end the brother team lost to the champion team with a score of one to five The second round of the game is called'Fast Meteor ' The two teams take turns to send people to challenge Members choose the distance to challenge press the button and the ball begins to fall Members need to receive the ball before it falls to the ground The challenge is successful The test is the speed of the guests Each person has two chances to challenge It has to be said that the program group is so good at playing that they try their best to torment the guests Zhou Shen as usual had a special group soul He was the first to represent his brother team He chose to challenge the distance of 8 meters After starting he was as fast as lightning and successfully caught the volleyball Because he was too serious he was also hit in the throat It can be called "one ball seals the throat" But Zhou Shen did not complain at all He always sent out the positive energy of his idol and refreshed the previous cognition of netizens In the second round the difficulty increased and the challenge was 91 meters As expected a kneeling slip like a rocket caught the ball steadily and won the applause of the whole team He proved himself with his strength Interestingly when it was Zhang Changning's turn to challenge Zhou Shen compared her arm length with her leg length showing the most adorable height difference which made many audiences laugh In addition to Sha Yi the brother team played very well and successfully pulled back a game In the third round of the game the members of the two teams were leggings six people and seven groups They needed to complete the forward roll paper cup pass cross the high ground waist pole jump rope a total of five checkpoints Finally the team with the shortest time won testing the tacit understanding of the members After listening to the rules Zhou Shen reappeared the classic expression package In the process Zhou Shen contracted all the jokes I believe that many audiences like me pay attention to Zhou Shen all the way Any link is completed perfectly When the paper cup is passed the singer's strong vital capacity is brought into full play The paper cup is passed without hands The lower waist passes easily Finally under the leadership of Zhou Shen he completed the challenge in 4 minutes and 39 seconds When it was the champion team's turn the brother team kept making trouble and lost successively when they went down to cross the pole In this regard Zhou Shen's online singing of "Lonely Brave Man" "Love You don't Kneel" once again filled the comedy effect of this program All the audience in the bullet screen shouted "I haven't heard enough" The final competition was a comprehensive endurance race of marbles To put it bluntly let the marbles compete The marble Zhou Shen got was'Dalmatian ' and the white deer got'Little Jelly' and Sha Yi got'Desert ' Li Chen was the first in the first round Zhou Shen's'Dalmatian' played in the second round He felt that Zhou Shen was more excited than he was to participate in the competition He shouted'Come on Dalmatians' all the way but unfortunately none of them rushed into the finish line Finally the champion team'Win-win 'won the victory of this issue The audience was very satisfied with the result After all This period want to convey is professional ability and sportsmanship After the broadcast ZhouShen as always was pushed on the micro Bo hot search Hot words'Running man vs world champion'Reading volume until today Reached 3249 million In addition The topic'ZhouShen speed skating catch '' ZhouShen vital capacity is how strong'Hot search seconds break ten million Zhou Shen This shows how strong the influence of idol Zhou Shen is

I don't know if everyone has any different views on Zhou Shen's performance Welcome to collect forward leave a mesغير مجاز مي باشدe one key three! Return to Sohu to see more Responsible Editor (function() { function getBrandHtml() { var brands = [] html = ''; for(var i = 0; i < brandslength; i++) { var brand = brands[i]; if(brandslength i+1) { html+= ''+brandname+''; } else { html+= ''+brandname+'、'; } } return html; }; if(documentgetElementById('linkBtn')){ documentgetElementById('linkBtn')onclick = function() { $('#brands')removeClass('brand');$ ( '# tipInfo')text ( 'Real name responded'); $ ('#linkBtn')remove();$ ('real-response content')css('line-height' '20px');$ ('real-response time')css('line-height' '20px'); }; documentgetElementById('brands')innerHTML = getBrandHtml(); }; })(); wt-dthtools.com

6 processes of open-pit mining from drilling, blasting to dumping _ operation

Original Title 6 Processes of Open-pit Mining from Perforation Blasting to Dumping The mining technology of open-pit mine is relatively simple mainly including drilling blasting mining loading and transportation and rock rock drilling tools dumping Next we will talk about the mining technology of open-pit mines in detail I Perforation work Perforation is the first working procedure of open pit mining In the whole process of open pit mining the غير مجاز مي باشدt of perforation accounts for about 10%-15% of the total production غير مجاز مي باشدt 1 Down-the-hole drill The down-the-hole drilling machine has the advantages of large drilling angle change range high mechanization degree reduction of auxiliary operation time improvement of the operation rate of the drilling machine flexibility of the down-the-hole drilling machine light equipment weight and low investment غير مجاز مي باشدt and particularly can control the ore grade by drilling various inclined holes eliminate toes reduce large blocks and improve the blasting quality Therefore the down-the-hole drill is widely used in small and medium-sized mines at home and abroad which is suitable for medium hard rock drilling 2 Rotary drill Rotary drilling rig is a new type of drilling equipment developed on the basis of rotary drilling rig which has the characteristics of high drilling efficiency low operation غير مجاز مي باشدt high degree of mechanization and automation and is suitable for drilling operations of various hardness of ore and rock At present it has become a common drilling equipment used in open-pit mines all over the world 3 Rock drilling jumbo Drill jumbo is a new type of drilling equipment with the development of mining industry One or a plurality of rock drills are arranged on a special drill boom or a rack together with an automatic propeller and a traveling mechanism is arranged so that the operation of the rock drill is mechanized II Blasting work The purpose of blasting work is to break the hard solid ore rock and provide the excavation material with appropriate size for mining and loading work In the total غير مجاز مي باشدt of open-pit mining blasting غير مجاز مي باشدt accounts for about 15% -20% The quality of blasting not only directly affects the efficiency of mining transportation coarse crushing and other equipment but also affects the total غير مجاز مي باشدt of the mine 1 Shallow hole blasting Expand the full text The diameter of the hole used in shallow hole blasting is small generally about 30-75 mm and the depth of the hole is generally less than 5 meters sometimes up to about 8 meters If the drilling jumbo is used for drilling the depth of the hole can be increased Shallow-hole blasting is mainly used for the excavation of open-pit mines or quarries caverns and tunnels with small production scale secondary blasting the treatment of new open-pit mine hills the formation of hillside open-pit single-wall ditch transportation channels and other special blasting 2 Deep-hole blasting Deep-hole blasting is a blasting method that uses drilling equipment to drill deeper boreholes as the charging space of mining explosives The deep-hole blasting of open-pit mine is mainly the production blasting of bench Drilling equipment for deep-hole blasting mainly includes down-the-hole drill and roller drill It can be used to drill vertical deep holes or inclined blast holes The charging of inclined blast holes is more uniform and the blasting quality of ore and rock is better which creates good conditions for mining and loading work In order to reduce the seismic effect and improve the blasting quality such measures as millisecond blasting in large area interval charging in blastholes or bottom air interval charging can be taken under certain conditions so as to reduce the blasting غير مجاز مي باشدt and obtain better economic benefit 3 Chamber blasting Chamber blasting is a blasting method in which more or a large amount of explosives are loaded in the tunnel of the blasting chamber Open-pit mines are used only during the capital construction period and under specific conditions and quarries are used when conditions permit and when the demand for mining is high 4 Multi-row hole millisecond blasting method In recent years with the rapid increase of the excavator bucket capacity and the production capacity of the open-pit mine the normal excavation blasting of the open-pit mine requires more and more blasting quantity each time Therefore large-scale blasting methods such as multi-row-hole millisecond blasting and multi-row-hole millisecond extrusion blasting are widely used in open-pit mining at home and abroad Advantages of multi-row millisecond blasting The one-time blasting quantity is large the blasting times and the blasting avoidance time are reduced and the utilization rate of the stope equipment is improved; The broken quality of ore and rock is improved and the boulder rate is reduced by 40 to 50% compared with that of single-row hole blasting; The efficiency of perforating equipment is increased by about 10% -15% which is due to the increase of working time utilization coefficient and the decrease of the number of operations of perforating equipment and filling area after blasting; Improve the efficiency of mining and transportation equipment by about 10% -15% 5 Multi-row hole differential extrusion blasting method It refers to the multi-row millisecond blasting in the case of residual muckpile in the working face

The existence of muck pile creates conditions for extrusion mining dth bit On the one hand it can prolong the effective action time of blasting and improve the utilization of explosive energy and crushing effect; on the other hand Mining Drilling Equipment it can control the width of muck pile and avoid the scattering of ore and rock The millisecond interval of multi-row hole millisecond extrusion blasting should be 30% ~ 50% longer than that of ordinary millisecond blasting and 50 ~ 100ms is often used in open-pit mines in China The advantages of multi-row hole millisecond extrusion blasting are as follows (1) The ore rock crushing effect is better This is mainly because the front is blocked by the slag heap and each row of boreholes including the first row can increase the charge and be fully crushed under the extrusion of the slag heap; (2) The muckpile is more concentrated For the mine using railway transportation it is not necessary to dismantle the road before blasting so as to improve the efficiency of mining loading and transportation equipment The disadvantages of multi-row hole millisecond extrusion blasting are as follows (1) High explosive consumption; (2) The working platform is required to be wider to accommodate the ballast pile; (3) The blasting pile height is large which may affect the safety of excavator operation III Blasting measures near the slope With the downward extension of the open-pit mine the problem of slope stability has become increasingly prominent In order to protect the slope the blasting near the slope should be strictly controlled According to the experience at home and abroad the main measures are millisecond blasting presplitting blasting and smooth blasting 1 Adopt millisecond blasting to reduce vibration One of the main functions of millisecond blasting is to reduce the seismic effect of blasting In order to give full play to the shock absorption effect of millisecond blasting the key is to try to increase the number of blasting segments and control the millisecond interval 2 Adopt presplitting blasting to isolate the slope The presplitting blasting near the slope is to drill a row of dense parallel boreholes along the slope boundary fill each hole with a small amount of explosives and detonate before the excavation zone is blasted so as to obtain a crack with a certain width and running through each borehole Due to the separation of the excavation zone from the slope by the pre-fracture the seismic wave of the subsequent excavation blasting will produce a strong reflection on the fracture surface which will greatly reduce the seismic wave passing through it thus protecting the slope 3 Adopt smooth blasting to protect the slope Smooth blasting near the slope is to drill a row of dense parallel boreholes along the boundary line fill a small amount of explosives in the holes and then blast after the excavation of boreholes so as to form parallel rock walls along the dense boreholes The difference between smooth blasting and presplitting blasting lies mainly in the initiation time The initiation of smooth holes is later than the previous rows of excavation holes usually 50 to 75 ms later In addition another measure is to control the blasting of the last few rows of boreholes The explosive quantity and resistance line of the last rows of boreholes near the slope should be reduced which is called "buffer blasting" which can reduce the damage of drilling blasting to the slope IV Purchase loading and transportation Acquisition and loading Mining and loading operation is to use loading machinery to excavate ore rock directly from the ground or blasting pile and load it into the carriage of transport machinery or unload it directly to the designated place It is the central link in the process of open-pit mining and other production processes such as drilling and blasting transportation and so on serve for mining and loading Main mining and loading equipment excavator dragline hydraulic shovel and rubber-tyred front loader Transportation In the process of open-pit mining the capital construction investment of mine transportation accounts for about 60% of the total investment of mine capital construction and the transportation غير مجاز مي باشدt and labor volume account for more than half of the total ore غير مجاز مي باشدt and labor volume respectively which shows the important position of transportation in open-pit mining Transportation modes of open-pit mine automobile transportation railway transportation belt transportation slope skip lifting transportation and combined transportation among which dump truck transportation is the most common Mining and transportation are inseparable and they influence and restrict each other At present the development trend of mining and transportation technology is mainly reflected in the large-scale mining and transportation equipment the integration and continuity of mining and transportation links and computer automation 5 Rock discharge Rock dumping is the operation of the transport terminal which transports the stripped topsoil and waste rock to the waste rock yard for disposal Rock dumping process rock dumping by railway transportation road transportation and belt transportation 6 Dump Waste dump (waste rock dump) a place where stripped materials are piled up which refers to the place where mining wastes are discharged in a centralized manner According to the stacking sequence the dump can be divided into single-bench dump covering multi-bench dump and slope-pressing multi-bench dump The dump is mainly divided into road transport dump railway transport dump belt transport dump and hydraulic transport dump according to the dumping process Return to Sohu to see more Review of past issues Responsible Editor wt-dthtools.com

What are the types of rotary drilling bits? _ Bedrock

Original title What are the types of rotary drilling bits Introduction of rotary drill bit manufacturer on classification of rotary drill bits Common rotary drill bits include auger bits rotary buckets barrel core bits underreamer bits percussive bits percussive grab cone bits and hydraulic grab buckets 1 Auger bit (1) Conical double head double screw suitable for hard bedrock Double-headed single screw suitable for weathered bedrock pebbles frozen soil with ice etc The above drill bits are equipped with various picks and many types of drill bits can be derived through the changes of tooth type pitch and helix angle (2) Straight screw bit a Bucket tooth straight screw double-head double-screw suitable for sandy soil small-diameter gravel layer with poor cementation; double-head single-screw Suitable for sandy soil and soil layer; single head and single screw Suitable for large diameter pebbles cohesive soil and hard mastic with poor cementation B Pick straight screw double screw triple screw and quadruple screw suitable for hard bedrock or gravel The bucket is applicable to a wide range of stاين نام مجاز نمي باشد The single-layer bottom is only applicable to the soil layer with strong visغير مجاز مي باشدity Tapered Rock Bit The double-door drilling bucket is applicable to a wide range of stاين نام مجاز نمي باشد The single-door drilling bucket is only applicable to large-diameter pebbles and hard clay II Rotary drilling bucket can be divided into pick drilling bucket and bucket tooth drilling bucket according to the teeth installed; and can be divided into double-layer bottom bucket and single-layer bottom bucket according mining drill bit to the number of bottom plates According to the number of doors it can be divided into double door buckets and single door buckets According to the taper of the barrel it can be divided into conical barrel drilling bucket and straight barrel drilling bucket According to the shape of the low plate it can be divided into pot bottom drilling bucket and flat-bottomed drilling bucket 。

The above structural forms are combined with each other and with the change of whether to have a vent hole and a door opening mechanism dozens of rotary drilling buckets can be combined Generally speaking double bottom drill III Barrel type coring bit At present there are two common ones cutter barrel drill (suitable for medium hard bedrock and gravel) and roller barrel drill with high drilling efficiency The difference of coring device mainly depends on the difficulty of coring Because the roller core bit is mainly used for hard rock drilling and the annular area of drilling is large if conditions permit reverse circulation drilling can be added to the bit part to lift (applicable to hard bedrock and large boulders) In the two types of drill bits of barrel coring drill there are also coring devices and non-coring devices IV Reaming drill bit In order to improve the bearing capacity of single pile on the basis of no increase of pile diameter and pile depth the design department often uses belled pile to realize the hard bedrock of rotary drilling rig Because the rotary drilling is a non-circulation drilling the slag can be removed with a slag removal bucket after the bottom expansion is completed Bottom drill bit is enough The commonly used reaming bit is mainly mechanical This kind of bit is relatively simple to use and maintain It has an upper opening type and a lower opening type The opening mechanism is generally a four-link mechanism It can be used for soil strong wind moderately weathered stاين نام مجاز نمي باشد and even construction reaming without any change You only need to select the reaming back to Sohu to see more Responsible Editor wt-dthtools.com

Stainless steel drilling is too difficult? What kind of drill is good? _ Yide

Originally published as Is it too difficult to drill stainless steel What kind of drill is good Nowadays the application of stainless steel is more and more extensive and a number of drill bits suitable for stainless steel have been developed for drilling in the market Today ZTE Yide Xiaobian will discuss with you about the drilling of stainless steel The premise is that we must first understand the processing characteristics of stainless steel The stainless steel material has strong plasticity and high toughness but when drilling the stainless steel surface has a large degree of hardening the cutting DHD Drill bit temperature is high and when drilling the twist drill is surrounded by the hole wall around the stainless steel surface it is difficult to dissipate heat and it is very easy to stick to the drill bit Therefore stainless steel drilling requires that the drill bit shall have high hardness good surface finish and the vertex angle of the drill bit shall be larger than that of the ordinary drill bit (between 130135) Meanwhile it shall be fully cooled and the feed rate shall be greater than 0 15 mm so as not to cut in the cold hardening layer as far as possible When drilling stainless steel the speed is reduced as much as possible the drilling temperature is also reduced and the emulsion is used for drilling

Drill bits commonly used for stainless steel drilling are high cobalt twist drill (M35 twist drill M42 twist drill) of which M42 high cobalt twist drill has the best غير مجاز مي باشدt performance In addition a replaceable carbide crown bit can be used but the price is higher Cobalt-containing twist drill is a twist drill containing the chemical element cobalt (Co) The purpose of adding the chemical element cobalt (Co) is to improve the high temperature resistance and abrasion resistance of the twist drill so that the drill hole can successfully penetrate the stainless steel surface Cobalt-containing twist drills are divided into cobalt-containing and high-cobalt drill bits The materials are M35 and M42 Cobalt-containing twist drills are harder than ordinary twist drills but they are also fragile Expand the full text Replaceable carbide crown bit is a new generation of drilling bit It consists of a steel drill body and a replaceable solid carbide crown and its machining accuracy is eight and a half kilograms But that proces غير مجاز مي باشدt can be reduced and the drill yield can be improved because the tooth crown can be changed Borehole Drill Bits This kind of drill can obtain accurate aperture size increment and has self-centering function so the aperture machining accuracy is very high Besides these two bits is there a stainless steel bit Can you drill Believe that many people have such an idea ZTE Yide dth hammer bit Xiaobian will use this video to verify everyone's idea Poke the video Kangkang Established in 2012 Wuxi Zhongxing Yide a 304 L stainless steel supplier is located in the Andali Building near the Oriental Steel City in Wuxi Jiangsu Province a well-known stainless steel market in China with excellent geographical location and convenient transportation It is a comprehensive enterprise mainly engaged in low-carbon stainless steel integrating warehousing processing trade and distribution Wuxi Zhongxing Yide is mainly engaged in 304 L 316 L 317 L 409 L 436 L 904 L 301L and other low-carbon stainless steel plates stainless steel coils stainless steel strips and stainless steel flat steel with a standing stock of more than 1000 tons of materials complete specifications and sufficient supply At the same time according to customer requirements to provide a variety of stainless steel plate processing services Kaiping slitting wire drawing mirror oil grinding polishing punching bending leveling slitting cutting rolling punching and so on Want to know more exciting content come and pay attention to the official website and WeChat public account of ZTE Yide Source https//wwwzxyd304lcom WeChat official account zxydbxg Return to Sohu to see more Responsible Editor wt-dthtools.com

Onlookers, XCMG Pneumatic Dth Hammer Construction Observation Meeting _ Construction Method

Original Title Onlookers XCMG Pneumatic Dth Hammer Construction Observation Meeting Recently Xugong Foundation organized a new generation of rock entry artifact Xugong XR150DV pneumatic down-the-hole hammer construction observation down the hole bit meeting in Hubei Huanghuang high-speed railway Project Department which attracted many admiring customers The site of the observation meeting was scorching and the customers who visited and exchanged were also discussing in full swing Everyone carefully observed the construction process of the product discussed the construction method and technology and the scene was very warm Expand the full text Rotary drilling Dth hammer method is a pile foundation construction method which combines large diameter Dth hammer with rotary drilling rig Its main purpose is to solve the problem of slow drilling in extremely hard rock by rotary drilling rig XCMG pneumatic Dth hammer uses rotary drilling as the main machine suspends the Dth hammer drilling tool uses high-power air compressor as the power source to provide high-pressure air dth drilling hammer uses pneumatic

Dth hammer as the drilling tool to impact drilling and uses high-pressure air as the circulating medium to provide power cool the drill bit clean the hole and discharge the slag The invention has the advantages of good flexibility self-walking of the main machine 360-degree rotation of the upper machine high drilling speed and good hole forming quality and is suitable for the construction of medium-diameter fastest dth hammer rock-socketed pile holes Aiming at the characteristics of foundation construction equipment closely related to geological conditions Xugong Foundation has continuously carried out research on construction methods provided customers with a variety of solutions expanded the construction field successively conquered the construction methods of complex stاين نام مجاز نمي باشد and expanded the rotary excavation method widely used in soft soil stاين نام مجاز نمي باشد to the hard rock stاين نام مجاز نمي باشد market in Southwest and South China Through the popularization of the construction method the rotary excavation method will be extended to the industrial and civil construction market Link Another initiative XCMG pneumatic down-the-hole hammer drill increases construction efficiency by more than 8 times Return to Sohu to see more Responsible Editor wt-dthtools.com

Drill bit specifications are complete, and they are too complete. _ Path

Original title The specifications mining dth bit of the drill bit are complete and the arrangement is too complete Drill is a tool used to drill through holes or blind holes in solid materials and to ream existing holes The commonly used drill bits are twist drill flat drill center drill deep hole drill and trepanning drill It is customary to classify reamers and counterbores as drill bits although they cannot make holes in solid material The specifications of various drill bits are shown in the table below Drill size 180 degrees Specification Small diameter Large diameter Full length Small diameter Blade Long handle diameter M33465651365 M4458075188 M55595852295 M666110902511 M8901401002812 M101101751103012 M121402001153212 1/4685110902511 5/168551401002812 3/81011501103012 1/21352001153212 Drill size 90 degree Specification Small diameter Large diameter Full length Small diameter Blade Long handle diameter M33464653564 M44584754284 M5551048550104 M6661259053120 M89016510053120 Drill size 180 degrees Specification Small diameter Large diameter Full length Small diameter Blade Long handle diameter M33465651365 M4458075188 M55595852295 M666110902511 M8901401002812 M101101751103012 M121402001153212 1/4685110902511 5/168551401002812 3/81011501103012 1/21352001153212 Drill size 90 degree Specification Small diameter Large diameter Full length Small diameter Blade Long handle diameter M33464653564 M44584754284 M5551048550104 M6661259053120 M89016510053120 Bit outer diameter bit length bit outer diameter bit length φ20mm350mmφ102mm350mm/420mm φ22mm350mmφ108mm350mm/420mm φ24mm350mmφ110mm350mm/420mm φ26mm350mm/420mmφ114mm350mm/420mm φ28mm350mm/420mmφ120mm350mm/420mm φ30mm350mm/420mmφ127mm350mm/420mm φ32mm350mm/420mmφ132mm350mm/420mm φ38mm350mm/420mmφ150mm350mm/420mm φ40mm350mm/420mmφ159mm350mm/420mm φ44mm350mm/420mmφ166mm350mm/420mm φ50mm350mm/420mmφ180mm350mm/420mm φ57mm350mm/420mmφ200mm350mm/420mm φ63mm350mm/420mmφ220mm350mm/420mm φ76mm350mm/420mmφ250mm350mm/420mm φ83mm350mm/420mmφ275mm350mm/420mm φ89mm350mm/420mmφ300mm350mm/420mm Drill size 180 degrees Expand the full text Specification Small diameter Large diameter Full length Small diameter Blade Long handle diameter

M33465651365 M4458075188 M55595852295 M666110902511 M8901401002812 M101101751103012 M121402001153212 1/4685110902511 5/168551401002812 3/81011501103012 1/21352001153212 Drill size 90 degree Specification Small diameter Large diameter Full length Small diameter Blade Long handle diameter M33464653564 M44584754284 M5551048550104 M6661259053120 M89016510053120 Specification table for center bit Blade diameter (d) Blade diameter tolerance Blade length (L2) Shank diameter (D) Overall length (L) 04005-005053031 05005-005063031 06005-005073536 07005-005083536 08005-005094036 09005-005104036 10005-005124036 1240100 12005-005145042 15005-005185042 1850100 1850150 1850200 20008-008245042 246 dhd drill bit 0100 2460150 2460200 25008-008306047 3080100 3080150 3080200 30008-008367757 36100100 36100150 36100200 32008-008387757 40008-0084810069 48100100 48100150 48100200 50012-0126011069 60120100 60120150 60120200 60012-0128016090 80012-012100180100 100012-012120180100 120012-012150220110 High-speed steel hollow drill bit also known as core drill bit or hole opener drill bit classification high-speed steel drill bit hard alloy drill bit tungsten steel drill bit; cutting depth 35MM 50MM 100M; suitable for drilling machine imported magnetic seat drill magnetic drill domestic magnetic seat drill magnet drill magnet drill steel plate drill magnetic drill machine tool bench drill seat drill and so on Diameter specification 12mm to 100mm; the main material of drill bit is high-speed steel Powder metallurgy; Cemented carbide The axis of the drill bit shall be inclined at an angle of 60 ° to the grinding wheel surface This angle is the point angle of the drill If the angle is not correct it will directly affect the size of the point angle of the drill the shape of the main cutting edge and the bevel of the chisel edge This refers to the position relationship between the axial line of the drill bit and the surface of the grinding wheel It is OK to take 60 ° which is generally more accurate Attention shall be paid to the relative horizontal position and angle position of the drill before sharpening The two positions shall be considered as a whole Do not neglect to set the angle for the sake of setting the cutting edge or dth rock bit neglect to set the cutting edge for the sake of setting the angle The greater the ratio of the length to the diameter of the drill bit the greater its tendency to bend The bending force can be reduced by reducing the length-diameter ratio thereby avoiding the breakage of the drill bit and the increase of the hole diameter error Deeper holes require drill sizes with larger length to diameter ratios Usually a hole with a depth of more than three times the diameter is a "deep hole" and the depth of a micro-drill generally exceeds this limit Specification of electric hammer bit 6mm 8mm X 110mm; 8mmx160mm; 8mm10mm12mmx210mm10mm12mm16mm20mmx450mm。 The main body of the hard alloy electric hammer drill is made of high-quality alloy steel and the tool bit is welded with hard alloy Used together with various electric hammers suitable for drilling on hard building materials such as concrete brick etc It is a widely used and highly efficient punching tool in the construction and installation industry Specification of electric hammer bit set 5110mm × 6 Specification of electric hammer bit set 5110mm 6110mm 6160mm 8160mm 10160 mm Round shank and square shank of electric hammer bit 6MM 8MM 10MM 12MM 14MM 16MM-28MM is Through-wall drill length 350 MM 16MM 18MM 20MM 22MM 25MM 28MM Drill bit type A Classification by structure (1) Integral drill bit the drill top the drill body and the drill shank are integrally made of the same material (2) End welding type drill bit the drill top part is welded by carbide Ｂ． Classification by drill (1) Straight shank drill bit the drill bit diameter is less than ψ 130 Below mm straight shanks are used (2) Taper shank drill bit the shank of the drill bit is tapered and generally its taper is Morse taper Ｃ． Classified by use (1) Center drill bit It is generally used to drill the center point before drilling The front conical surface is 60 ° 75 ° 90 ° etc In order to use the tailstock to support the lathe during operation the 60 ° center drill bit should be matched with the lathe tailstock center at 60 ° (2) Twist drill bit It is the most widely used drill bit in industrial manufacturing and we generally use twist drill bit (3) Superhard drill bit The front end of the drill body or all of it is made of superhard alloy tool material which is used for drilling and processing materials (4) Oil hole drill bit The drill body has two small holes through which the cutting agent reaches the cutting edge to take away heat and chips With this drill bit the workpiece is generally rotated while the drill bit is stationary (5) Deep-hole drill bit It was first used for the drilling of gun barrels and stone barrels also known as gun barrel drill bit The deep hole drill is of a straight flute type and a quarter of a strong portion is cut off in a circular tube to produce chip removal at the cutting edge (6) Drill bit reamer In order to meet the needs of mass production the front end is a drill bit and the rear end is a reamer The diameter of the drill bit and the diameter of the reamer are only the margin of reaming There are also drill bits used in combination with screw tapping so they are also called mixed drill bits (7) Taper drill Taper drill can be used when machining the feed inlet of the mold (8) Cylindrical hole drill We call it a countersunk end mill The front end of this kind of drill has a part with a smaller diameter which is called the lead (9) Taper hole drill It is used for drilling taper holes Its front end angle is 90 ° 60 ° etc The chamfering cutter we use is a kind of taper hole drill Source Booz UG Programming Studio Return to Sohu to see more Responsible Editor wt-dthtools.com