CN1151311C - Boronized-sulfurized composite layer on surface of steel parts - Google Patents
Boronized-sulfurized composite layer on surface of steel parts Download PDFInfo
- Publication number
- CN1151311C CN1151311C CNB001145118A CN00114511A CN1151311C CN 1151311 C CN1151311 C CN 1151311C CN B001145118 A CNB001145118 A CN B001145118A CN 00114511 A CN00114511 A CN 00114511A CN 1151311 C CN1151311 C CN 1151311C
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- sulfurizing
- layer
- boronising
- steel part
- composite bed
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Abstract
The present invention relates to a boronizing and sulfurizing composite layer precipitated on the surface of a steel part, which can further improve the lubricating and wear resistant performance of the surface of a steel part. The composite layer comprises a preprocessed steel part, wherein boronizing layers exist on one or multiple surfaces of the steel part; sulfurizing layers are permeated on the boronizing layers; thus, a boronizing and sulfurizing composite layer is formed. The steel part of the present invention can be mechanical components with various shapes. A composite layer of metal boride and metal sulfide is formed on the surface of the steel part by sulfurizing and boronizing treatment by the present invention and has the characteristics of high adhesive strength, strong abrasion resistance, good lubricating performance and seizure resistance and simple and convenient processing.
Description
Technical field
The present invention relates to a kind of boronising sulfurizing composite bed that is deposited on steel piece surface, it can further improve the lubrication and wear resistance property of steel piece surface.The invention still further relates to the application of this composite bed in each bearing of tooth-wheel bit.
Background technology
Carry out the boronising processing at steel piece surface and can make it possess good red hardness and wear resistance, and the boronising operating procedure is simple, production efficiency is high, cost is low, thereby be widely used.Tooth-wheel bit is used for the geological drilling of oil, mineral products, because tooth-wheel bit is to turn round under the condition of high-strength, high pressure, HI high impact, therefore needs the bearing surface of tooth-wheel bit to have good lubrication and wear resistance property.At present, most of drill produced both domestic and external producer all adopts and carries out the mode that boronising handles on the bearing journal surface of tooth-wheel bit and increase the bearing wear resistance.Yet, because boride layer is thinner, piece surface after the boronising can't carry out ground finish, so the roughness of boronising steel piece surface is higher, because bearing is in boundary lubrication condition, under the high speed and high pressure operating mode, bearing surface is more coarse, and wearing and tearing are more serious, and frictional heat is bigger, the bearing easy interlock of healing, even kill.So only boronising is handled on the bearing journal face of tooth-wheel bit, being difficult to adapt to high rotating speed, high the pressure of the drill is the requirement of the modern drilling technology of feature.For this reason, both at home and abroad drill bit manufacturing firm has begun to adopt bearing journal built-up welding high-carbon cobalt chromium tungsten technology, but its advantage is the overlay cladding ground finish, and surfaceness is low, but this mode exists operating procedure complexity, production efficiency is low, cost is high shortcoming.Above-mentioned situation also is present in other field of machinofacture.
Summary of the invention
The objective of the invention is to improve steel part boronising surface lubrication and the relatively poor defective of seizure resistance in the prior art, utilize the metal sulfuric horizon to have the characteristic of solid lubricant, a kind of boronising sulfurizing composite bed that is formed at steel piece surface is provided, this composite bed is not only wear-resisting, and has good lubricating property.
Technical scheme of the present invention is: one or more surfaces of the steel part after preprocessing have boride layer, sulphide layer is arranged on boride layer, form a boronising sulfurizing composite bed thus, the thickness that it is characterized in that boride layer is 0.01-0.2mm, the thickness of sulphide layer is 0.001-0.30mm, the concentration of infiltration layer is from showing the interior gradient layer that progressively reduces that is, in the metallic sulfide that constitutes sulphide layer, contain metal oxide, described steel part is the bit leg journel in the tooth-wheel bit, and described boronising sulfurizing composite bed is present in the big journal surface of bit leg journel, the pilot pin surface, axle journal locking slot surface, one thrust surface of axle journal, in the axle journal two road thrust surfaces any one or a plurality of surface.
Steel part of the present invention can be the component of machine of different shape, as axle, bearing, gear, tooth-wheel bit part etc.The boride layer of steel piece surface can adopt conventional metallic surface boriding process technology to handle, sulphide layer can be formed by the technical finesse of low temperature ion sulfuration surface treatment, usually the thickness of boride layer is 0.01-0.2mm, the thickness of sulphide layer is 0.001-0.30mm, the concentration of infiltration layer can have cementation zone under the workpiece boronising sulfurizing composite bed to low-carbon alloy steel usually from showing the interior gradient layer that progressively reduces that is.Sulphide layer major ingredient of the present invention is metallic carbide, also the little metal oxide compound can be arranged.
The present invention handles the boronising steel piece surface by adopting low temperature ion sulfuration surface treatment technology, make steel piece surface form the composite bed of metal boride and metallic sulfide, this composite bed and steel piece surface have good binding intensity, and because sulphide layer is to the fusion effect of boride layer and the effect of the solid lubricant that sulphide layer possessed, make the present invention not only have stronger wear resistance, and possess good lubricity and seizure resistance.The present invention is used for the cone bit bearing journal surface, its supporting capacity, work-ing life, running speed are greatly improved, can adapt to the requirement of the modern drilling technology of high rotating speed, high the pressure of the drill.The present invention also has the advantage that the process operation method is easy, production efficiency is high, cost of manufacture is low.
Description of drawings
Fig. 1 is the diagrammatic cross-section of the present invention surface infiltration level structure.(a) expression steel part matrix, (b) expression boride layer, (c) expression sulphide layer
Fig. 2 is the composite bed distribution plan in the one embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the invention is further described.
Steel part is the bit leg journel 1 in the tooth-wheel bit, material is a low-carbon alloy steel, through surface cementation and precision work, the bit leg journel surface comprises big axle journal 2 surfaces, pilot pin 3 surfaces, axle journal locking slot 4 surfaces, one thrust surface of axle journal 6, axle journal two road thrust surfaces 5, can to above-mentioned surface any one or a plurality ofly carry out boronising and handle, boride layer thickness is 0.05-0.1mm, after boronising and Q-tempering processing, clean, carrying out low temperature ion sulfuration then handles, treatment temp is 180-190 ℃, and the sulfurizing medium is H
2S and CS
2It perhaps is the bright sulfur steam, treatment time is 6-8 hour, on boride layer, form one deck sulphide layer, the thickness of sulphide layer is 0.02-0.03mm, can in the metallic sulfide that constitutes sulphide layer, contain a spot of metal oxide, the whole surface of this bit leg journel is after the boronising sulfurizing is handled, compare with the like product of handling without sulfurizing, its bite-resistant performance is significantly improved, compare with built-up welding high-carbon cobalt chromium tungsten, its course of processing is easy, production cost is low, the various performances of use near or surpass, application prospect is very good, solved and produced the medium-term and long-term difficult problem that exists of high speed and high pressure tooth-wheel bit, the probing production efficiency of tooth-wheel bit is significantly improved.
Claims (3)
1, a kind of boronising sulfurizing composite bed of steel piece surface, one or more surfaces of the steel part after preprocessing have boride layer, sulphide layer is arranged on boride layer, form a boronising sulfurizing composite bed thus, the thickness that it is characterized in that boride layer is 0.01-0.2mm, the thickness of sulphide layer is 0.001-0.30mm, the concentration of infiltration layer is from showing the interior gradient layer that progressively reduces that is, in the metallic sulfide that constitutes sulphide layer, contain metal oxide, described steel part is the bit leg journel in the tooth-wheel bit, and described boronising sulfurizing composite bed is present in the big journal surface of bit leg journel, the pilot pin surface, axle journal locking slot surface, one thrust surface of axle journal, in the axle journal two road thrust surfaces any one or a plurality of surface.
2, by the boronising sulfurizing composite bed of the described steel piece surface of claim 1, it is characterized in that boride layer thickness is 0.05-0.1mm, the thickness of sulphide layer is 0.02-0.03mm.
3, by the boronising sulfurizing composite bed of claim 1 or 2 described steel piece surfaces, it is characterized in that the material in the steel part is a low-carbon alloy steel, under boronising sulfurizing composite bed, have cementation zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001145118A CN1151311C (en) | 2000-04-24 | 2000-04-24 | Boronized-sulfurized composite layer on surface of steel parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001145118A CN1151311C (en) | 2000-04-24 | 2000-04-24 | Boronized-sulfurized composite layer on surface of steel parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1274019A CN1274019A (en) | 2000-11-22 |
| CN1151311C true CN1151311C (en) | 2004-05-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001145118A Expired - Fee Related CN1151311C (en) | 2000-04-24 | 2000-04-24 | Boronized-sulfurized composite layer on surface of steel parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1151311C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102560505B (en) * | 2010-12-17 | 2013-11-20 | 中国石油大学(华东) | Composite abrasion-resisting corrosion-resisting self-lubricating film and preparation method thereof |
| CN106270807B (en) * | 2016-08-30 | 2018-11-27 | 哈尔滨汽轮机厂有限责任公司 | A kind of carburized gears flank of tooth method for grinding |
| JP7228228B2 (en) * | 2018-12-18 | 2023-02-24 | 株式会社日本テクノ | Gas sulphurization method and gas sulphurization apparatus |
| CN114321698B (en) * | 2021-12-30 | 2022-07-19 | 大连科利德光电子材料有限公司 | Steel cylinder for storing electronic-grade nitric oxide and machining method thereof |
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2000
- 2000-04-24 CN CNB001145118A patent/CN1151311C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1274019A (en) | 2000-11-22 |
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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 | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Suzhou Kingdream Shareate Engineering Tool Co., Ltd. Assignor: Jianghan Petroleum Drilling Bit Co., Ltd. Contract fulfillment period: 2006.12.30 to 2012.12.29 contract change Contract record no.: 2009420000009 Denomination of invention: Boronized-sulfurized composite layer on surface of steel parts Granted publication date: 20040526 License type: Exclusive license Record date: 2009.4.2 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2006.12.30 TO 2012.12.29; CHANGE OF CONTRACT Name of requester: SUZHOU JIANGZUANXINRUI ENGINNERING TOOLS CO., LTD. Effective date: 20090402 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040526 Termination date: 20160424 |
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| CF01 | Termination of patent right due to non-payment of annual fee |