CN101457644A - Production process method of dual metal pick - Google Patents
Production process method of dual metal pick Download PDFInfo
- Publication number
- CN101457644A CN101457644A CNA2007101447915A CN200710144791A CN101457644A CN 101457644 A CN101457644 A CN 101457644A CN A2007101447915 A CNA2007101447915 A CN A2007101447915A CN 200710144791 A CN200710144791 A CN 200710144791A CN 101457644 A CN101457644 A CN 101457644A
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- CN
- China
- Prior art keywords
- pick
- increment
- denticle
- winning machine
- cutting bit
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 6
- 239000002184 metal Substances 0.000 title abstract description 3
- 230000009977 dual effect Effects 0.000 title description 2
- 238000005520 cutting process Methods 0.000 claims abstract description 14
- 229910000851 Alloy steel Inorganic materials 0.000 claims abstract description 10
- 238000003466 welding Methods 0.000 claims abstract description 9
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 7
- 239000000956 alloy Substances 0.000 claims abstract description 7
- 239000003245 coal Substances 0.000 claims description 12
- 201000011180 Dental Pulp Calcification Diseases 0.000 claims description 11
- 238000005476 soldering Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims 1
- 238000003754 machining Methods 0.000 claims 1
- 238000009628 steelmaking Methods 0.000 claims 1
- 239000007769 metal material Substances 0.000 abstract description 6
- 238000007669 thermal treatment Methods 0.000 abstract 2
- 238000005496 tempering Methods 0.000 abstract 1
- 230000007704 transition Effects 0.000 abstract 1
- 238000005065 mining Methods 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 235000010585 Ammi visnaga Nutrition 0.000 description 1
- 244000153158 Ammi visnaga Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The invention relates to a method for producing a double metal cutting pick consisting of a hard alloy head1, a pick end 2 and a pick body 4, wherein, the pick end 2 is made of wearresistant alloy steel of high hardness and high wear resistance, and after being processed, the hard ally head 1 is sequentially processed by the operations of braze welding and thermal treatment. The pick end 2 is made of the alloy steel of high hardness, and after being processed, the pick end 2 is processed by the operation of thermal treatment. The tangs of the connection parts of the pick end 2 and the pick body 4 are in transition fit, and after being assembled, the pick end 2 and the pick body 4 are connected together by the method of welding and then are processed by the operation of low-temperature tempering, so as to eliminate the stress caused by welding. The pick body is caused to be of higher hardness and impact toughness, the pick end is of higher hardness and wear resistance to overcome the disadvantages of the cutting pick made of the same metal materials, thereby greatly prolonging the service life of the cutting pick.
Description
Affiliated technical field
The utility model relates to a kind of mining pick shape coal winning machine cutting bit, is used for coal-cutting machineries such as coal mining, tunnelling.
Background technology
Pick shape coal winning machine cutting bit is the easy-consuming fitting commonly used of road heading machineries such as coal mining, mining, tunnel, and pick is made up of denticle and carbide bit usually and is connected by soldering.Pick mainly comprises following several failure mode, and alloy comes off, the bending of tooth body, and the tooth body fractures etc.It is because the excessive wear of pick body front end makes carbide bit too outstanding that alloy comes off, and makes the alloy head lose protection too early and supports; The bending of tooth body, the tooth body fractures, is when pick is worked, to bear very big external force, since pick tooth body strength deficiency, the phenomenon that occurs when surpassing the pick working strength.As can be seen, have only when the tooth body and have higher intensity and impact toughness, the denticle head has higher hardness and wear resistence again simultaneously, just can make pick have higher application life.By Metal Material Science as can be known, for a kind of metal material, the two is the negative correlation rule.Make the tooth body have higher intensity and impact toughness, the denticle head has higher hardness and wear resistence again simultaneously, and it is one sided using same metal material.In order to overcome the deficiency of existing same metal material pick, the invention provides the bimetallic pick manufacturing technique method of a kind of use, can increase substantially application life.
Summary of the invention
The technical solution adopted in the present invention is: select for use wear-resisting alloy steel to make at the pick head, the tooth body partly selects for use high strength alloy steel to make, and after heat-treating respectively, two parts cooperate by seam, are bound up with welding method.
The invention has the beneficial effects as follows, by pick head with higher hardness and high-wearing feature, avoid denticle to support the carbide bit position and produce wearing and tearing fast, the tooth body has higher intensity and impact toughness and can avoid the tooth body crooked and fracture, and can increase substantially pick application life.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples
Fig. 1 is a structure chart of the present invention
Fig. 2 is a process chart of the present invention
Among Fig. 1: 1 hard alloy head, 2 increments, 3 weld seams, 4 tooth bodies
The specific embodiment
Increment 2 is made by the wear-resisting alloy steel with high rigidity and high-wearing feature among Fig. 1, and after the processing, first soldering hard alloy head 1 is being heat-treated.Tooth body 2 selects for use high strength alloy steel to make, and after the processing, heat-treats.Increment 2 and tooth body 4 two parts are by the seam interference fits, and increment 2 and tooth body 4 two parts assembling back are bound up with welding method, carry out lonneal then, to eliminate the stress that produces because of welding.Make the tooth body have higher intensity and impact toughness, tooth ends has higher hardness and wear resistence again simultaneously, overcomes the deficiency of existing same metal material pick, thereby can increase substantially the application life of pick.
Claims (8)
1, a kind of pick shape coal winning machine cutting bit is characterized in that denticle 4 and increment 2 respectively by high strength alloy steel and wear-resisting alloy steel making, and two parts cooperate by seam, are bound up with welding method.
2, a kind of pick shape coal winning machine cutting bit according to claim 1 is characterized in that denticle 4 is by the high strength alloy steel manufacturing.
3, a kind of pick shape coal winning machine cutting bit according to claim 1 is characterized in that increment 2 is by the wear-resisting alloy steel manufacturing.
4, a kind of pick shape coal winning machine cutting bit according to claim 1 is characterized in that increment 2 and denticle 4 junctions are interference fits.
5, a kind of pick shape coal winning machine cutting bit according to claim 1, its feature increment 2 and denticle 4 adopt welding method to be bound up.
6, a kind of pick shape coal winning machine cutting bit denticle 4 according to claim 2 is characterized in that denticle 4 is after processing and heat treatment, welds with increment 2 then.
7, a kind of pick shape coal winning machine cutting bit increment 2 according to claim 3 is characterized in that increment 2 carries out machining earlier, and the soldering hard alloy head 1 then, heat-treats the back and welds with tooth body 4.
8, a kind of pick shape coal winning machine cutting bit according to claim 1 is characterized in that carrying out lonneal after denticle 4 and increment 2 welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101447915A CN101457644A (en) | 2007-12-11 | 2007-12-11 | Production process method of dual metal pick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101447915A CN101457644A (en) | 2007-12-11 | 2007-12-11 | Production process method of dual metal pick |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101457644A true CN101457644A (en) | 2009-06-17 |
Family
ID=40768740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101447915A Pending CN101457644A (en) | 2007-12-11 | 2007-12-11 | Production process method of dual metal pick |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101457644A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071939A (en) * | 2011-01-18 | 2011-05-25 | 张虎 | High-wear-resistance cutting pick |
| CN102108866A (en) * | 2009-12-24 | 2011-06-29 | 闵利新 | Novel-structure wear-resistant bit tooth |
| CN103447758A (en) * | 2013-07-18 | 2013-12-18 | 陕西奥邦锻造有限公司 | Integrated technique of hard alloy brazing and heat treatment for cutting pick |
| CN103659168A (en) * | 2012-09-23 | 2014-03-26 | 佳木斯大学 | Production technology process of cutting tooth |
| EP3775408A1 (en) * | 2018-03-28 | 2021-02-17 | thyssenkrupp Industrial Solutions AG | Excavating tooth for a bucket-wheel excavator |
-
2007
- 2007-12-11 CN CNA2007101447915A patent/CN101457644A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102108866A (en) * | 2009-12-24 | 2011-06-29 | 闵利新 | Novel-structure wear-resistant bit tooth |
| CN102071939A (en) * | 2011-01-18 | 2011-05-25 | 张虎 | High-wear-resistance cutting pick |
| CN103659168A (en) * | 2012-09-23 | 2014-03-26 | 佳木斯大学 | Production technology process of cutting tooth |
| CN103447758A (en) * | 2013-07-18 | 2013-12-18 | 陕西奥邦锻造有限公司 | Integrated technique of hard alloy brazing and heat treatment for cutting pick |
| EP3775408A1 (en) * | 2018-03-28 | 2021-02-17 | thyssenkrupp Industrial Solutions AG | Excavating tooth for a bucket-wheel excavator |
| EP3775408B1 (en) * | 2018-03-28 | 2025-03-12 | Koch Solutions GmbH | Excavating tooth for a bucket-wheel excavator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20090617 |