CN105734256A - Heat treatment process of 9Mn2V gears - Google Patents
Heat treatment process of 9Mn2V gears Download PDFInfo
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- CN105734256A CN105734256A CN201410760450.0A CN201410760450A CN105734256A CN 105734256 A CN105734256 A CN 105734256A CN 201410760450 A CN201410760450 A CN 201410760450A CN 105734256 A CN105734256 A CN 105734256A
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- 9mn2v
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- tempering
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Abstract
The present invention discloses a heat treatment process of 9Mn2V gears. According to the heat treatment process, 9Mn2V is used as the material; the heat treatment process comprises the following steps: balling and annealing; tempering; quenching at medium frequency; and artificially aging. The step of balling and annealing is characterized in by balling and annealing for 4 hours at 760 DEG C or balling and annealing for 6 hours at 690 DEG C, balling at 1.5-5 levels with network of 1-3 levels, and proceeding before cutting and processing. The step of tempering is characterized by tempering for 3 hours at 800 DEG C, cooling via oil, tempering at high temperature of 630-650 DEG C, obtaining HB of 250+/-30, and proceeding before finely turning the outer circles. The step of quenching at medium frequency is characterized by continuously heating and cooling at 2500 cycles, straightening when obvious deformation is generated, cooling in water at 850 DEG C, obtaining supercooling degree being smaller than 5mm and hardened layers being 3-5mm in thickness, tempering for 8 hours at low temperature of 180 DEG C, and proceeding after finely turning the outer circles. The step of artificially aging is characterized by aging for 12-24 hours at 160 DEG C, and proceeding before finely grinding the outer circles. The heat treatment process of the 9Mn2V gears is simple to operate, low in requirement on experience of operators and high in product quality.
Description
Technical field
The present invention relates to a kind of 9Mn2V gear heat treatment technique.
Background technology
The adjustment in processing step and device parameter etc. of the existing 9Mn2V gear heat treatment technique there is also certain empirical and technical, for the operator newly started with, also need to carry out substantial amounts of exercise and could grasp operation skill, produce the good product of quality.
Summary of the invention
In order to realize the purpose of the present invention, the present invention provides the 9Mn2V gear heat treatment technique of a kind of easy to operate, quick, easy left-hand seat.
For solving above-mentioned technical problem, the present invention adopts the following technical scheme that
A kind of 9Mn2V gear heat treatment technique, including following operation:
Material selection 9Mn2V；
Technology for Heating Processing: modified mid frequency induction hardening one artificial aging of spheroidizing one；
Spheroidizing: 760 DEG C of * 4h or 690 DEG C of * 6h, nodularization 1.5～5 grades, 1～3 grade of network, carries out before machining；
Modified: 800 DEG C of * 3h oil coolings, 630 DEG C～650 DEG C high temperings, HB250 ± 30, carry out before outer circle finish turning；
Mid frequency induction hardening: laser heating cooling in 2500 weeks, has alignment when substantially deforming, and 850 DEG C of water-cooleds, degree of supercooling, less than 5mm, quench-hardened case 3～5mm, 180 DEG C of * 8h lonneals, carries out after outer circle finish turning；
Artificial aging: 160 DEG C of * 12～24h, carries out before fine grinding cylinder.
The present invention is simple to operate, and operator's skill requirement is low, and product quality is high.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described:
A kind of 9Mn2V gear heat treatment technique, including following operation:
Material selection 9Mn2V；
Technology for Heating Processing: modified mid frequency induction hardening one artificial aging of spheroidizing one；
Spheroidizing: 760 DEG C of * 4h or 690 DEG C of * 6h, nodularization 1.5～5 grades, 1～3 grade of network, carries out before machining；
Modified: 800 DEG C of * 3h oil coolings, 630 DEG C～650 DEG C high temperings, HB250 ± 30, carry out before outer circle finish turning；
Mid frequency induction hardening: laser heating cooling in 2500 weeks, has alignment when substantially deforming, and 850 DEG C of water-cooleds, degree of supercooling, less than 5mm, quench-hardened case 3～5mm, 180 DEG C of * 8h lonneals, carries out after outer circle finish turning；
Artificial aging: 160 DEG C of * 12～24h, carries out before fine grinding cylinder.
Claims (1)
1. a 9Mn2V gear heat treatment technique, is characterized in that: include following operation:
Material selection 9Mn2V；
Technology for Heating Processing: modified mid frequency induction hardening one artificial aging of spheroidizing one；
Spheroidizing: 760 DEG C of * 4h or 690 DEG C of * 6h, nodularization 1.5～5 grades, 1～3 grade of network, carries out before machining；
Modified: 800 DEG C of * 3h oil coolings, 630 DEG C～650 DEG C high temperings, HB250 ± 30, carry out before outer circle finish turning；
Mid frequency induction hardening: laser heating cooling in 2500 weeks, has alignment when substantially deforming, and 850 DEG C of water-cooleds, degree of supercooling, less than 5mm, quench-hardened case 3～5mm, 180 DEG C of * 8h lonneals, carries out after outer circle finish turning；
Artificial aging: 160 DEG C of * 12～24h, carries out before fine grinding cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410760450.0A CN105734256A (en) | 2014-12-12 | 2014-12-12 | Heat treatment process of 9Mn2V gears |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410760450.0A CN105734256A (en) | 2014-12-12 | 2014-12-12 | Heat treatment process of 9Mn2V gears |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105734256A true CN105734256A (en) | 2016-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410760450.0A Pending CN105734256A (en) | 2014-12-12 | 2014-12-12 | Heat treatment process of 9Mn2V gears |
Country Status (1)
| Country | Link |
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| CN (1) | CN105734256A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107937668A (en) * | 2017-11-28 | 2018-04-20 | 湖北工程职业学院 | A kind of heat treatment quenching process of cold work tool steel precision component |
-
2014
- 2014-12-12 CN CN201410760450.0A patent/CN105734256A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107937668A (en) * | 2017-11-28 | 2018-04-20 | 湖北工程职业学院 | A kind of heat treatment quenching process of cold work tool steel precision component |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160706 |
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| WD01 | Invention patent application deemed withdrawn after publication |