CN100465411C - Chain pick for coal mine - Google Patents
Chain pick for coal mine Download PDFInfo
- Publication number
- CN100465411C CN100465411C CNB2004100168456A CN200410016845A CN100465411C CN 100465411 C CN100465411 C CN 100465411C CN B2004100168456 A CNB2004100168456 A CN B2004100168456A CN 200410016845 A CN200410016845 A CN 200410016845A CN 100465411 C CN100465411 C CN 100465411C
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- CN
- China
- Prior art keywords
- hob
- pick
- coal
- quality
- product
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention belongs to hob applied to coal cutter, development machine and coal planner in coal industry. The hob is made up of hob body and hard alloy part, the manufacturing method is: drills aperture on the hob head, the hard alloy part uses alloy pressing process to be pressed into the aperture. The invention completes the process of key part of the hob with devices, thus it reduces the affection of manmade factor to product quality, it can upgrade the quality of the product and maintains the quality consistent, applied to produce mineral hob in batch. The industrial experience testifies, in condition that the clamp gangue and experiment rolling barrel are old, the hob consumption per myriad tons within 30.
Description
Technical field
The invention belongs to the production method of the pick of coal industry coal-winning machine, development machine, coal plough use.
Background technology
The colliery is a large amount of a kind of attrition components that use of production equipments such as coal industry coal-winning machine, development machine, coal plough with pick.The technical requirements regulation of People's Republic of China's coal industry standard " colliery pick MT246-1996 ": the colliery is welded with the carbide alloy of pick by the denticle that adopts structural alloy steel and employing YG11C or YG13C.Import and the homemade pick that use now in domestic colliery all adopt the soldering processing technology to produce.
In actual use, following problem often occurs: (1) collapses because of the brazing quality problem causes the alloy head of pick; (2) heat once more because of soldering makes the pick head, hardness increases, and toughness reduces, easily fracture.Thereby shortened the application life of pick greatly, and ten thousand tons of consumptions are very big, cause the Coal Production cost to increase, and productivity and profit margin are descended.
The soldering processing technology technically is feasible, and cost is not high yet, but the quality of the product that processes is subjected to artificial factor big especially, particularly to the colliery this product that needs batch process of pick.
The domestic production colliery mostly is to use the intermediate frequency soldering furnace with the producer of pick, carry out soldering by one one of operator, product quality is subjected to the influence of operator's technical level and production attitude to a great extent, product quality is uneven, widely different, the technical requirements that the product quality of a lot of producers does not reach national standard, even and the product quality in same batch of the different batches of same factory also all can not keep certain stability.
The KENNAMETAL company of the external factory such as the U.S. (authority of world's mining cutter) is when implementing the soldering processing technology of pick, finish by computer-controlled pipeline system welding equipment, thereby the minimizing artificial factor, the quality of assurance product.But computer-controlled pipeline system welding equipment cost height is not easy to apply at home.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art part, meet or exceed under the prerequisite that People's Republic of China's coal industry standard " colliery pick MT246-1996 " requires at the technical data that guarantees product, provide that a kind of activities is simple, steady quality in the batch production process, can farthest reduce human factor is used pick to the colliery of product quality influence production method.
Technical solution of the present invention is: a kind of colliery production method of pick, comprise the following steps: to make earlier pick denticle hardness HRC=40～46, hole at pick body head then, the accurately machined fineness in this hole is more than 0.8, the accurately machined fineness of carbide alloy is more than 0.8, carbide alloy partly is pressed in the hole of pick body head with the alloy pressing process again.
The present invention adopts alloy press process technology that carbide alloy partly is pressed in the hole on the pick body head, finish the process of pick key position fully by machinery equipment, thereby farthest reduced the influence of human factor to product quality, can improve the quality of products and keep uniform quality, be suitable for producing in batches the colliery pick.
Type approval test (doing contrast test on former and later two cylinders at same the coal-winning machine) result that the Qian Jiaying of Luan group that opens a mine in the Tangshan City, Hebei province carries out shows that pick provided by the invention has the following advantages:
(1) reasonable in design;
(2) Loss Rate of the hard alloy head on the pick is zero;
(3) the denticle pliability is better, and is wear-resistant, and the broken teeth phenomenon is seldom arranged;
(4) line time is saved 10-15 minute than downgoing time on the unit, has improved operating efficiency greatly;
(5) contain under the older prerequisite of dirt band, drum to test in the coal seam, ten thousand tons of consumption picks are no more than 30, use ten thousand tons of consumption 60-80 of pick of domestic other producers over half reducing relatively;
(6) cost performance reaches the level of import pick.
The specific embodiment:
The colliery pick partly is made up of pick body and carbide alloy.Pick provided by the invention, its manufacture craft is as follows:
(1) pick denticle die-forging forming;
(2) pick denticle roughing;
(3) pick denticle modifier treatment makes denticle hardness HRC=40～46;
(4) pick denticle fine finishining, the boring of denticle head reaches more than 0.8 fineness;
(5) carbide alloy fine finishining reaches more than 0.8 fineness;
(6) with the preheating of pick denticle, the frock clamp that uses forcing press more than 30 tons and adapt with the pick denticle is pressed into carbide alloy in the hole of pick denticle head;
(7) pick is heat-treated, surperficial antirust processing.
Claims (1)
1, a kind of colliery manufacture method of pick, it is characterized in that comprising the following steps: making earlier pick denticle hardness HRC=40～46, hole at pick body head then, the accurately machined fineness in this hole is more than 0.8, the accurately machined fineness of carbide alloy is more than 0.8, carbide alloy partly is pressed in the hole of pick body head with the alloy pressing process again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100168456A CN100465411C (en) | 2004-03-10 | 2004-03-10 | Chain pick for coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100168456A CN100465411C (en) | 2004-03-10 | 2004-03-10 | Chain pick for coal mine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1560433A CN1560433A (en) | 2005-01-05 |
| CN100465411C true CN100465411C (en) | 2009-03-04 |
Family
ID=34440680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100168456A Expired - Fee Related CN100465411C (en) | 2004-03-10 | 2004-03-10 | Chain pick for coal mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100465411C (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2069923U (en) * | 1990-01-20 | 1991-01-23 | 单忠仁 | Pick for tunnelling machine and coal cutter |
| CN2547874Y (en) * | 2002-05-29 | 2003-04-30 | 姜云龙 | Cutting pick |
| CN2570458Y (en) * | 2002-09-12 | 2003-09-03 | 李清德 | Soldering-free cutter bit |
-
2004
- 2004-03-10 CN CNB2004100168456A patent/CN100465411C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2069923U (en) * | 1990-01-20 | 1991-01-23 | 单忠仁 | Pick for tunnelling machine and coal cutter |
| CN2547874Y (en) * | 2002-05-29 | 2003-04-30 | 姜云龙 | Cutting pick |
| CN2570458Y (en) * | 2002-09-12 | 2003-09-03 | 李清德 | Soldering-free cutter bit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1560433A (en) | 2005-01-05 |
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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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090304 Termination date: 20130310 |