CN107937862A - A kind of carburization process for chain production - Google Patents
A kind of carburization process for chain production Download PDFInfo
- Publication number
- CN107937862A CN107937862A CN201711192123.XA CN201711192123A CN107937862A CN 107937862 A CN107937862 A CN 107937862A CN 201711192123 A CN201711192123 A CN 201711192123A CN 107937862 A CN107937862 A CN 107937862A
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- Prior art keywords
- carburizing
- temperature
- stove
- carries out
- carburization process
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Classifications
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/20—Carburising
- C23C8/22—Carburising of ferrous surfaces
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/80—After-treatment
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
A kind of carburization process for chain production, including following production stage：(1) empty stove is warming up to 700 800 DEG C first, while opens recirculated cooling water, the cracked gas such as carburizer and methanol is instilled into stove and carries out empty stove carburizing, pre- 1 2h of carburizing；(2) 1 3h of Deep Carburization Process that heats up is continued after above-mentioned pre- carburizing；So circulate for several times；(3) controling of the pressure of the oven treats that carburizing is completed in 50 100Pa, and temperature is down to 830 840 DEG C, keeps the temperature 40 60min, and part internal and external temperature uniformly carries out high tempering afterwards, and high tempering temperature is 680 690 DEG C, and come out of the stove quenching and slow cooling, start bell and take out workpiece.Beneficial effects of the present invention are：(1) invented technology is simple, improves chain surface abrasion resistance, corrosion resistance and inoxidizability, and shortens the time of carburizing, extends the final service life of chain products and improves its using effect；(2) in the invention temperature control, reduce the generation of final chain products grinding crack.
Description
Technical field
The present invention relates to chain to produce and process field, and in particular to a kind of carburization process for chain production.
Background technology
Carburizing：It is one kind to Treatment of Metal Surface, what it is using carburizing is mostly mild steel or low-alloy steel, and specific method is
Workpiece is inserted in active carburizing medium, is heated to 900--950 degrees Celsius of single phase austenite area, keeps the temperature enough time
Afterwards, the active atoms of carbon for making to decomposite in carburizing medium penetrates into steel part top layer, so as to obtain top layer high-carbon, center portion still keeps original
Component.Similar also has low temperature Nitrizing Treatment.This is a kind of common heat treatment process of metal material, it can make to ooze carbon
Workpiece surface obtains very high hardness, improves its rub proofness.
Carburizing (carburizing/carburization) is the process for instigating carbon atom to penetrate into steel surface layer.And
Make the workpiece of mild steel that there is the superficial layer of high-carbon steel, then by quenching and lonneal, make the superficial layer of workpiece with high hard
Degree and wearability, and the core of workpiece still maintains the toughness and plasticity of mild steel.
The material of carburized workpiece is generally mild steel or low-carbon alloy steel (phosphorus content is less than 0.25%).Carburizing Hou ﹐ steel parts
The chemical composition on surface is close to high-carbon steel.Also to pass through Cui Huo ﹐ to obtain the wear-resisting of high Biao faces Ying Du ﹑ high after workpiece carbonization
Property and Pi labor Qiang Du ﹐ and keep center portion to there are the Qiang Ren ﹐ after mild steel quenching workpiece is withstood shocks load.Carburization process is wide
General Ji tool Ling Jian ﹐ such as Chi Lun ﹑ Zhou ﹑ camshafts etc. for Fei Ji ﹑ automobiles and tractor etc..
It can be divided into gas carburizing, Gu body Shen Tan ﹑ Ye bodies Shen Tan ﹑ and carbo-nitriding (cyanogen by different ﹐ carburizings of carbon-containing media
Change).
Gas carburizing is loaded workpiece in closed carburizer, is passed through gas penetration enhancer (methane, ethane etc.) or liquid oozes
Agent (kerosene or benzene, alcohol, acetone etc.), decomposites active atoms of carbon at high temperature, workpiece surface is penetrated into, to obtain high carbon surface
A kind of carburizing operating procedure of layer.
Pack carburizing is to be mounted in workpiece and solid carburizer (charcoal adds accelerating agent to form) in closed cementing pot together,
Case is put into heating furnace and is heated to carburizing temperature, and held for some time, active atoms of carbon is oozed one kind of people's workpiece surface
Earliest method for carburizing.
Liquid carburizing is to carry out carburizing using liquid medium, and common liquid carburizing medium has:Carborundum, " 603 " carburizing
Agent etc..
Carbo-nitriding (cyaniding) and it is divided into dry cyaniding, liquid carbonitriding, solid carbonitriding.
In the prior art, grinding crack often occurs in cutting in the chain by Carburization Treatment, meanwhile, most throughout one's life
The chain products wearability of production, corrosion resistance and inoxidizability are not very high.
The content of the invention
The purpose of the invention is to overcome deficiency of the prior art, there is provided a kind of carburizer for chain production
Skill.
In order to solve the above technical problems, the technical scheme is that：
A kind of carburization process for chain production, including following production stage：
(1) empty stove is warming up to 700-800 DEG C first, while opens recirculated cooling water, carburizer and first are instilled into stove
The cracked gas such as alcohol carry out empty stove carburizing, and persistently overheating to reach 890-920 DEG C of carburizing temperature to furnace temperature, carbon potential 1.1-1.4, keeps the temperature
Carry out pre- carburizing 1-2h；
(2) 930-950 DEG C, carbon potential 1.1-1.4 is continuously heating to after above-mentioned pre- carburizing, insulation carries out Deep Carburization Process 1-
3h；So circulate for several times；
(3) controling of the pressure of the oven treats that carburizing is completed in 50-100Pa, and temperature is down to 830-840 DEG C, keeps the temperature 40-60min, part
Internal and external temperature uniformly carries out high tempering afterwards, and high tempering temperature is 680-690 DEG C, and come out of the stove quenching and slow cooling, start bell and take
Go out workpiece.
Preferably, step (2) cycle-index is 2-4 times.
Beneficial effects of the present invention are：(1) invented technology is simple, improves chain surface abrasion resistance, corrosion resistance and resists
Oxidisability, and the time of carburizing is shortened, extend the final service life of chain products and improve its using effect；
(2) in the invention temperature control, reduce the generation of final chain products grinding crack, improve production efficiency and excellent
Product rate.
Embodiment
The effect of to make to architectural feature of the invention and being reached, has a better understanding and awareness, to preferable
Embodiment coordinates detailed description, is described as follows：
Embodiment 1
(1) empty stove is warming up to 700 DEG C first, while opens recirculated cooling water, carburizer and methanol etc. are instilled into stove
Cracked gas carries out empty stove carburizing, and persistently overheating to reach 890 DEG C of carburizing temperature, carbon potential 1.1 to furnace temperature, insulation carries out pre- carburizing
1h；
(2) 930 DEG C are continuously heating to after above-mentioned pre- carburizing, carbon potential 1.1, insulation carries out Deep Carburization Process 1h；So circulation 2
It is secondary；
(3) controling of the pressure of the oven treats that carburizing is completed in 50Pa, and temperature is down to 830 DEG C, keeps the temperature 40min, and part internal and external temperature is uniform
After carry out high tempering, high tempering temperature is 680 DEG C, and come out of the stove quenching and slow cooling, start bell and take out workpiece.
Embodiment 2
(1) empty stove is warming up to 800 DEG C first, while opens recirculated cooling water, carburizer and methanol etc. are instilled into stove
Cracked gas carries out empty stove carburizing, and persistently overheating to reach 920 DEG C of carburizing temperature, carbon potential 1.4 to furnace temperature, insulation carries out pre- carburizing
2h；
(2) 950 DEG C are continuously heating to after above-mentioned pre- carburizing, carbon potential 1.4, insulation carries out Deep Carburization Process 3h；So circulation 4
It is secondary；
(3) controling of the pressure of the oven treats that carburizing is completed in 100Pa, and temperature is down to 840 DEG C, keeps the temperature 60min, and part internal and external temperature is equal
High tempering is carried out after even, high tempering temperature is 690 DEG C, and come out of the stove quenching and slow cooling, start bell and take out workpiece.
Embodiment 3
(1) empty stove is warming up to 750 DEG C first, while opens recirculated cooling water, carburizer and methanol etc. are instilled into stove
Cracked gas carries out empty stove carburizing, and persistently overheating to reach 900 DEG C of carburizing temperature, carbon potential 1.3 to furnace temperature, insulation carries out pre- carburizing
1.5h；
(2) 940 DEG C are continuously heating to after above-mentioned pre- carburizing, carbon potential 1.3, insulation carries out Deep Carburization Process 1.5h；So follow
Ring 3 times；
(3) controling of the pressure of the oven treats that carburizing is completed in 75Pa, and temperature is down to 835 DEG C, keeps the temperature 50min, and part internal and external temperature is uniform
After carry out high tempering, high tempering temperature is 685 DEG C, and come out of the stove quenching and slow cooling, start bell and take out workpiece.
Beneficial effects of the present invention are：(1) invented technology is simple, improves chain surface abrasion resistance, corrosion resistance and resists
Oxidisability, and the time of carburizing is shortened, extend the final service life of chain products and improve its using effect；
(2) in the invention temperature control, reduce the generation of final chain products grinding crack, improve production efficiency and excellent
Product rate.
Basic principle, main feature and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and what is described in the above embodiment and the description is only the present invention
Principle, various changes and modifications of the present invention are possible without departing from the spirit and scope of the present invention, these change and
Improvement is both fallen within the range of claimed invention.The protection domain of application claims by appended claims and its
Equivalent defines.
Claims (2)
- A kind of 1. carburization process for chain production, it is characterised in that：Including following production stage：(1) empty stove is warming up to 700-800 DEG C first, while opens recirculated cooling water, carburizer and methanol etc. are instilled into stove Cracked gas carries out empty stove carburizing, and persistently overheating to reach 890-920 DEG C of carburizing temperature, carbon potential 1.1-1.4 to furnace temperature, insulation carries out Pre- carburizing 1-2h；(2) 930-950 DEG C, carbon potential 1.1-1.4 is continuously heating to after above-mentioned pre- carburizing, insulation carries out Deep Carburization Process 1-3h；Such as This circulation is for several times；(3) controling of the pressure of the oven treats that carburizing is completed in 50-100Pa, and temperature is down to 830-840 DEG C, keeps the temperature 40-60min, inside and outside part Temperature uniformly carries out high tempering afterwards, and high tempering temperature is 680-690 DEG C, and come out of the stove quenching and slow cooling, start bell and take out work Part.
- A kind of 2. carburization process for chain production according to claim 1, it is characterised in that：Step (2) circulation time Number is 2-4 times.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711192123.XA CN107937862A (en) | 2017-11-24 | 2017-11-24 | A kind of carburization process for chain production |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711192123.XA CN107937862A (en) | 2017-11-24 | 2017-11-24 | A kind of carburization process for chain production |
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| Publication Number | Publication Date |
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| CN107937862A true CN107937862A (en) | 2018-04-20 |
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| CN201711192123.XA Pending CN107937862A (en) | 2017-11-24 | 2017-11-24 | A kind of carburization process for chain production |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111041182A (en) * | 2019-12-20 | 2020-04-21 | 绩溪山合机械有限公司 | Chain machining process method |
| CN113943161A (en) * | 2021-11-25 | 2022-01-18 | 王耀民 | Ti (BCN) powder and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105648393A (en) * | 2014-12-03 | 2016-06-08 | 重庆业高家具有限公司 | Surface carburizing process for mold |
| CN105689969A (en) * | 2014-11-26 | 2016-06-22 | 重庆市巴南区永兴机械厂 | Guide post processing technology |
| CN106141575A (en) * | 2015-05-17 | 2016-11-23 | 王华美 | A kind of high temperature resistant exhaust valve of electromotor |
-
2017
- 2017-11-24 CN CN201711192123.XA patent/CN107937862A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105689969A (en) * | 2014-11-26 | 2016-06-22 | 重庆市巴南区永兴机械厂 | Guide post processing technology |
| CN105648393A (en) * | 2014-12-03 | 2016-06-08 | 重庆业高家具有限公司 | Surface carburizing process for mold |
| CN106141575A (en) * | 2015-05-17 | 2016-11-23 | 王华美 | A kind of high temperature resistant exhaust valve of electromotor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111041182A (en) * | 2019-12-20 | 2020-04-21 | 绩溪山合机械有限公司 | Chain machining process method |
| CN113943161A (en) * | 2021-11-25 | 2022-01-18 | 王耀民 | Ti (BCN) powder and preparation method thereof |
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Application publication date: 20180420 |