CN106222605A - A kind of gear carburizing quenching process - Google Patents
A kind of gear carburizing quenching process Download PDFInfo
- Publication number
- CN106222605A CN106222605A CN201610737779.4A CN201610737779A CN106222605A CN 106222605 A CN106222605 A CN 106222605A CN 201610737779 A CN201610737779 A CN 201610737779A CN 106222605 A CN106222605 A CN 106222605A
- Authority
- CN
- China
- Prior art keywords
- heat
- treatment furnace
- gear
- minutes
- carried out
- Prior art date
- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
- C21D1/20—Isothermal quenching, e.g. bainitic hardening
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/32—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for gear wheels, worm wheels, or the like
-
- 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
Abstract
The invention discloses a kind of gear carburizing quenching process, load heat-treatment furnace including the gear after machining being completed and heat up, when being warming up to 920 ± 5 DEG C, carbon potential is 0.85%, and is incubated 20 minutes；Carbon potential in heat-treatment furnace is risen to 1.10%, keep the temperature in heat-treatment furnace maintain 920 ± 5 DEG C constant, and keep 130 minutes；Carbon potential in heat-treatment furnace is reduced to 0.75%, keep the temperature in heat-treatment furnace maintain 920 ± 5 DEG C constant, and keep 100 minutes；Heat-treatment furnace is carried out cooling process, cools the temperature to 845 ± 5 DEG C；Heat-treatment furnace is carried out isothermal holding, the carbon potential in heat-treatment furnace is reduced to 0.70%, and is incubated 30 minutes；Gear is carried out quenching cooling.The present invention is carried out continuously by carburizing and quenching, thus shortens technological process, decreases the costs such as transhipment and heat treatment, and production efficiency is higher.
Description
Technical field
The present invention relates to Field of Heat-treatment, particularly to a kind of gear carburizing quenching process.
Background technology
Gear is a kind of common machine components, and gear needs it is carried out heat treatment after being processed, thus reaches
To higher mechanical performance, employing carburizing general to gear heat treatment adds the heat treatment mode of quenching, improves the hardness of gear
With the abrasion resistance on surface, after existing carburizing quenching process is commonly used as carburizing pre-cooling, direct quenching, but remaining in infiltration layer after quenching
The Ovshinsky scale of construction is higher, and particularly with essence coarse-grained steel, surface is easily formed net carbide, and case hardness is difficult to the technology that reaches and wants
Ask, and existing PROCESS FOR TREATMENT is relatively costly, do not possess good economic benefit.
Summary of the invention
It is an object of the invention to as solving the problems referred to above, it is provided that a kind of gear carburizing quenching process.
In order to achieve the above object, the present invention provides following technical scheme: a kind of gear carburizing quenching process, including following
Step:
(1) gear after machining being completed loads heat-treatment furnace and heats up, and is warmed up to 650 DEG C and starts to be passed through methanol；
(2) it is warmed up to 750 DEG C start to be passed through the propane that flow is 1-10nl/min；
(3) when being warming up to 920 ± 5 DEG C, carbon potential is 0.85%, and is incubated 20 minutes；
(4) after step (3) completes, the carbon potential in heat-treatment furnace is risen to 1.10%, keeps the temperature in heat-treatment furnace to maintain
Constant at 920 ± 5 DEG C, and keep 130 minutes；
(5) after step (4) completes, the carbon potential in heat-treatment furnace is reduced to 0.75%, keep the temperature in heat-treatment furnace to maintain
920 ± 5 DEG C constant, and keeps 100 minutes；
(6) after step (5) completes, heat-treatment furnace is carried out cooling process, cool the temperature to 845 ± 5 DEG C；
(7) after step (6) completes, heat-treatment furnace is carried out isothermal holding, the carbon potential in heat-treatment furnace is reduced to 0.70%, and
It is incubated 30 minutes；
(8) after step (7) completes, gear is carried out quenching cooling.
As the present invention a kind of preferably, described in be passed through the flow of methanol be flow be 50 ± 5ml/min.
Beneficial effect:
A kind of gear carburizing quenching process that the present invention provides, makes gear surface residual austenite content and non-martensite layer thickness
Reduce, improve the abrasion resistance on the durometer surface of gear.It is carried out continuously by carburizing and quenching simultaneously, thus shortens technique
Flow process, decreases the costs such as transhipment and heat treatment, and production efficiency is higher.The effective carburized layer of gear surface is made by this technique
The degree of depth can reach 0.3-1.0mm, and case hardness can reach 680HV1.
Accompanying drawing explanation
Fig. 1 is the process chart of the present invention.
Detailed description of the invention
The technical scheme provided the present invention below with reference to specific embodiment is described in detail, it should be understood that following specifically
Embodiment is merely to illustrate the present invention rather than limits the scope of the present invention.
Embodiment 1:
A kind of gear carburizing quenching process, comprises the following steps:
(1) gear after machining being completed loads heat-treatment furnace and heats up, and is warmed up to 650 DEG C and starts to be passed through methanol, first
The flow of alcohol is 50 ± 5ml/min；
(2) it is warmed up to 750 DEG C start to be passed through the propane that flow is 1-10nl/min；
(3) when being warming up to 920 ± 5 DEG C, carbon potential is 0.85%, and is incubated 20 minutes；
(4) after step (3) completes, the carbon potential in heat-treatment furnace is risen to 1.10%, keeps the temperature in heat-treatment furnace to maintain
Constant at 920 ± 5 DEG C, and keep 130 minutes；
(5) after step (4) completes, the carbon potential in heat-treatment furnace is reduced to 0.75%, keep the temperature in heat-treatment furnace to maintain
920 ± 5 DEG C constant, and keeps 100 minutes；
(6) after step (5) completes, heat-treatment furnace is carried out cooling process, cool the temperature to 845 ± 5 DEG C；
(7) after step (6) completes, heat-treatment furnace is carried out isothermal holding, the carbon potential in heat-treatment furnace is reduced to 0.70%, and
It is incubated 30 minutes；
(8) after step (7) completes, gear is carried out quenching cooling.
The present invention provide in this confession one gear carburizing quenching process, make gear surface residual austenite content and Fei Ma
Family name's bulk layer thickness reduces, and improves the abrasion resistance on the durometer surface of gear.It is carried out continuously by carburizing and quenching simultaneously, thus
Shortening technological process, decrease the costs such as transhipment and heat treatment, production efficiency is higher.Gear surface is made by this technique
Effectively carburized (case) depth can reach 0.3-1.0mm, and case hardness can reach 680HV1.
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned embodiment, also includes
The technical scheme being made up of above technical characteristic combination in any.Above-described is the matrix embodiment of the present invention, it should
Point out, it will be understood by those skilled in the art that under the premise without departing from the principles of the invention, it is also possible to make some improvement and profit
Decorations, these improvements and modifications are also considered as protection scope of the present invention.
Claims (2)
1. a gear carburizing quenching process, it is characterised in that: comprise the following steps:
(1) gear after machining being completed loads heat-treatment furnace and heats up, and is warmed up to 650 DEG C and starts to be passed through methanol；
(2) it is warmed up to 750 DEG C start to be passed through the propane that flow is 1-10nl/min；
(3) when being warming up to 920 ± 5 DEG C, carbon potential is 0.85%, and is incubated 20 minutes；
(4) after step (3) completes, the carbon potential in heat-treatment furnace is risen to 1.10%, keeps the temperature in heat-treatment furnace to maintain
Constant at 920 ± 5 DEG C, and keep 130 minutes；
(5) after step (4) completes, the carbon potential in heat-treatment furnace is reduced to 0.75%, keep the temperature in heat-treatment furnace to maintain
920 ± 5 DEG C constant, and keeps 100 minutes；
(6) after step (5) completes, heat-treatment furnace is carried out cooling process, cool the temperature to 845 ± 5 DEG C；
(7) after step (6) completes, heat-treatment furnace is carried out isothermal holding, the carbon potential in heat-treatment furnace is reduced to 0.70%, and
It is incubated 30 minutes；
(8) after step (7) completes, gear is carried out quenching cooling.
A kind of gear carburizing quenching process the most according to claim 1, it is characterised in that the flow being passed through methanol described in: is
50±5ml/min。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610737779.4A CN106222605A (en) | 2016-08-29 | 2016-08-29 | A kind of gear carburizing quenching process |
| PCT/CN2016/105671 WO2018040290A1 (en) | 2016-08-29 | 2016-11-14 | Gear carburizing and quenching process |
| KR1020187031090A KR20190055017A (en) | 2016-08-29 | 2016-11-14 | Gear carburization quenching method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610737779.4A CN106222605A (en) | 2016-08-29 | 2016-08-29 | A kind of gear carburizing quenching process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106222605A true CN106222605A (en) | 2016-12-14 |
Family
ID=57554782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610737779.4A Pending CN106222605A (en) | 2016-08-29 | 2016-08-29 | A kind of gear carburizing quenching process |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR20190055017A (en) |
| CN (1) | CN106222605A (en) |
| WO (1) | WO2018040290A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113699357A (en) * | 2021-09-10 | 2021-11-26 | 贵州群建精密机械有限公司 | Method for controlling carburizing and quenching deformation of thin-wall gear |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775571A (en) * | 2010-02-03 | 2010-07-14 | 广州柴油机厂 | Process for producing large-scale diesel engine cam workpiece with high hardness and abrasive resistance |
| CN102676983A (en) * | 2011-03-11 | 2012-09-19 | 青岛德盛机械制造有限公司 | Carburization processing method |
| CN103993154A (en) * | 2014-06-09 | 2014-08-20 | 江西航宇热处理有限公司 | Thermal treatment method of alloy steel gear |
| CN104117830A (en) * | 2014-07-24 | 2014-10-29 | 成都亨通兆业精密机械有限公司 | Gear production technology facilitating gear surface quality and segregation degree |
| CN104762629A (en) * | 2014-12-10 | 2015-07-08 | 苏州路路顺机电设备有限公司 | Processing technology for gearbox gear |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2554686B1 (en) * | 2010-03-30 | 2018-07-25 | Aisin Seiki Kabushiki Kaisha | Method for manufacturing base material for wave gear |
| US9410232B2 (en) * | 2011-11-01 | 2016-08-09 | Nippon Steel & Sumitomo Metal Corporation | Method for producing steel component |
| EP2832877B1 (en) * | 2012-03-30 | 2017-10-11 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Gear having excellent seizing resistance |
| CN105586599A (en) * | 2014-11-14 | 2016-05-18 | 重庆春顾机械制造有限公司 | Thermal treatment method for carburizing and quenching of gearbox gears |
| CN105297036B (en) * | 2015-11-16 | 2018-05-08 | 中车戚墅堰机车车辆工艺研究所有限公司 | Suppress the method that gear Deep Carburization Process quenching process internal oxidition produces |
-
2016
- 2016-08-29 CN CN201610737779.4A patent/CN106222605A/en active Pending
- 2016-11-14 WO PCT/CN2016/105671 patent/WO2018040290A1/en active Application Filing
- 2016-11-14 KR KR1020187031090A patent/KR20190055017A/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775571A (en) * | 2010-02-03 | 2010-07-14 | 广州柴油机厂 | Process for producing large-scale diesel engine cam workpiece with high hardness and abrasive resistance |
| CN102676983A (en) * | 2011-03-11 | 2012-09-19 | 青岛德盛机械制造有限公司 | Carburization processing method |
| CN103993154A (en) * | 2014-06-09 | 2014-08-20 | 江西航宇热处理有限公司 | Thermal treatment method of alloy steel gear |
| CN104117830A (en) * | 2014-07-24 | 2014-10-29 | 成都亨通兆业精密机械有限公司 | Gear production technology facilitating gear surface quality and segregation degree |
| CN104762629A (en) * | 2014-12-10 | 2015-07-08 | 苏州路路顺机电设备有限公司 | Processing technology for gearbox gear |
Non-Patent Citations (3)
| Title |
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| 《钢铁热处理》编写组编: "《钢铁热处理原理及应用》", 31 January 1979 * |
| 刘宗昌，冯佃臣编著: "《热处理工艺学》", 31 August 2015 * |
| 张文莉，吴承玲主编；胡新，宋群玲副主编: "《金属热处理生产技术》", 30 January 2011 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018040290A1 (en) | 2018-03-08 |
| KR20190055017A (en) | 2019-05-22 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161214 |
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| RJ01 | Rejection of invention patent application after publication |