CN103526006A - High-frequency induction heating and heat processing technology of duplicate gear - Google Patents
High-frequency induction heating and heat processing technology of duplicate gear Download PDFInfo
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- CN103526006A CN103526006A CN201310446380.7A CN201310446380A CN103526006A CN 103526006 A CN103526006 A CN 103526006A CN 201310446380 A CN201310446380 A CN 201310446380A CN 103526006 A CN103526006 A CN 103526006A
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- duplicate gear
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The invention discloses a high-frequency induction heating and heat processing technology of a duplicate gear. The technology is characterized by comprising the steps as follows: 1, a profiled magnetic ring current sensor provided with a two-way induction ring is clamped in the position of an output end of high-frequency equipment, the high-frequency equipment is adjusted as follows: plate voltage is 12 KV plus or minus 0.5 KV, plate current is 4.5 A, grid current is 1.2 A and return voltage is 7.5 KV, and then, an intermittent heating mode is adopted to heat the duplicate gear until the requirement for the transformation temperature required by phase change is met; 2, an oil cooling stirring mode is adopted to rapidly cool the duplicate gear to obtain a quenching martensitic structure, and the temperature of cooling oil ranges from 40 DEG C to 80 DEG C; and 3, tempering is performed in time at the temperature ranging from 180 DEG C to 220 DEG C, and heat insulation is performed for 120-150 min; and air cooling is performed until the temperature of duplicate gear is at the indoor temperature. The high-frequency induction heating and heat processing technology of the duplicate gear has the benefits as follows: the technology is safe, applicable, economical, energy-saving and easy to operate, and the heating power is easy to control; the profiled magnetic ring current sensor can be used for converting magnetic energy into heat energy, so that the surface of a part is structurally transformed rapidly, the phase change is achieved, accordingly, the heating time for the part is shortened, the deformation is reduced, and the comprehensive mechanical property of the part is improved further.
Description
Technical field
The present invention relates to a kind of thermal treatment process, be specifically related to a kind of induction heating high frequency heat treatment process of duplicate gear.
Background technology
Duplicate gear is the vitals of System of Tracked Vehicle Transmission System, and the performance of the whole wheel box performance of vehicle is had to important effect, and the induction heat treatment of duplicate gear is to guarantee one of key factor that it obtains excellent comprehensive performance.
Use other quenching apparatus to heat-treat vital part duplicate gear, there are some problems, for example: in quenching heat-processed, owing to being the heating of requirement parts locally, toughness will be given prominence to, be subject to clashing into number of times comparatively frequent, other heat treated whole structure can not reach, and has affected the performance of part whole synthesis mechanical property.
Summary of the invention
For solving the deficiencies in the prior art, the object of the present invention is to provide a kind of production efficiency, minimizing that improves duplicate gear to be out of shape, to guarantee the induction heating high frequency heat treatment process of dimensional precision, raising comprehensive mechanical performance.
In order to realize above-mentioned target, the present invention adopts following technical scheme:
An induction heating high frequency heat treatment process, it is characterized in that, comprise the following steps:
(1), heating: will be contoured to magnet ring stream inductor block at high-frequency apparatus output terminal and be installed and put in place, regulate the screen of high-frequency apparatus to press: 12 ± 0.5KV, screen stream: 4.5A, grid current: 1.2A, back pressure: 7.5KV, then adopts interrupted heating mode heating duplicate gear to meeting the required transition temperature of phase transformation;
(2), quench: rapid cooling duplicate gear obtains quenched martensite tissue;
(3), tempering: timely tempering 180-220 ℃ after quenching, insulation 120-150min;
(4), cooling: air cooling is to room temperature.
The induction heating high frequency heat treatment process of aforesaid duplicate gear, is characterized in that, the aforementioned magnet ring stream sensing apparatus that is contoured to has bidirectional inductive ring.
The induction heating high frequency heat treatment process of aforesaid duplicate gear, is characterized in that, aforementioned interrupted heating mode is: heating 20s-stops 5s-heating 15s-and stops 5s-heating 10s-and stop.
The induction heating high frequency heat treatment process of aforesaid duplicate gear, is characterized in that, in quenching step, the type of cooling is: oil cooling stirs.
The induction heating high frequency heat treatment process of aforesaid duplicate gear, is characterized in that, the temperature of aforementioned cooling oil is 40-80 ℃.
The induction heating high frequency heat treatment process of aforesaid duplicate gear, is characterized in that, duplicate gear adopts 38CrSi to make, and the required transition temperature of phase transformation is 900 ℃.
Usefulness of the present invention is: safe and applicable, and economical and energy saving, heating power is easy to control, technique easy handling; Proximity effect, surface action and the annular effect of utilizing dicyclo to be contoured to the disposable magnetic induction principle having by the high-energy magnetic line of force of high-frequency apparatus output terminal of magnet ring stream inductor block are basis, be contoured to magnet ring stream inductor block magnetic energy is converted to heat energy, make piece surface that structural transformation occur rapidly, reach the object of phase transformation, make part minimizing heat-up time, part deformation amount reduces, and the comprehensive mechanical performance of part is further enhanced; Meanwhile, utilize the feature of high-power output, profiling inductor block is made to bidirectional inductive ring, production efficiency also doubles.
Embodiment
Below in conjunction with specific embodiment, the present invention is done to concrete introduction.
Duplicate gear preferably adopts 38CrSi to make.The 38CrSi duplicate gear of take is below introduced its thermal treatment process in detail as example, and this technique specifically comprises the following steps:
(1), heating: at high-frequency apparatus output terminal, will be contoured to magnet ring stream inductor block and be installed and put in place, regulate the parameter of high-frequency apparatus, thus the power of regulation output magnetic line of force, and then the power that regulates heat energy to assemble, the parameter of high-frequency apparatus is specific as follows:
Screen is pressed: 12 ± 0.5KV,
Screen stream: 4.5A,
Grid current: 1.2A,
Back pressure: 7.5KV,
Under the effect of high-frequency apparatus machine tool chief axis rotation, high-frequency apparatus to meeting the required transition temperature of phase transformation, adds the interrupted heating mode of thermal recovery to duplicate gear homogeneous heating, specific as follows:
Heating 20s-stops 5s-heating 15s-and stops 5s-heating 10s-and stop.
By the judgement to color after piece surface heating, determine part heating temperature height, that duplicate gear adopts in the present embodiment is 38CrSi, color is controlled at shiny red, represents that temperature, greatly about 900 ℃, meets the required transition temperature of phase transformation.
As a kind of preferred scheme, being contoured to magnet ring stream sensing apparatus has bidirectional inductive ring, can enhance productivity one times.
Because this dicyclic induction heating is to complete with instantaneously heating form, heat energy aggregation is very strong, and the time is very short, and phase transformation changes very fast at transmission layer, and also performance is inabundant for inside parts structural stress and thermal stresses, has reached the minimum effect of part deformation amount.
(2), quench: rapid cooling duplicate gear obtains quenched martensite tissue.
The type of cooling is preferably oil cooling and stirs, and the temperature of cooling oil is preferably 40-80 ℃.
(3), tempering: timely tempering 180-220 ℃ after quenching, insulation 120-150min.
(4), cooling: air cooling, to room temperature, obtains duplicate gear.
Thermal treatment process of the present invention, proximity effect, surface action and the annular effect of utilizing dicyclo to be contoured to the disposable magnetic induction principle having by the high-energy magnetic line of force of high-frequency apparatus output terminal of magnet ring stream inductor block are basis, be contoured to magnet ring stream inductor block magnetic energy is converted to heat energy, make piece surface that structural transformation occur rapidly, reach the object of phase transformation, make part minimizing heat-up time, part deformation amount reduces.
After testing, adopt thermal treatment process of the present invention to process the duplicate gear obtaining, compare with existing duplicate gear, be out of shape littlely, size is more accurate, and comprehensive mechanical performance is greatly improved.
In addition, technique of the present invention also has: safe and applicable, and economical and energy saving, heating power is easy to control, the usefulness such as technique easy handling.
It should be noted that, above-described embodiment does not limit the present invention in any form, and all employings are equal to replaces or technical scheme that the mode of equivalent transformation obtains, all drops in protection scope of the present invention.
Claims (6)
1. the induction heating high frequency heat treatment process of duplicate gear, is characterized in that, comprises the following steps:
(1), heating: will be contoured to magnet ring stream inductor block at high-frequency apparatus output terminal and be installed and put in place, regulate the screen of high-frequency apparatus to press: 12 ± 0.5KV, screen stream: 4.5A, grid current: 1.2A, back pressure: 7.5KV, then adopts interrupted heating mode heating duplicate gear to meeting the required transition temperature of phase transformation;
(2), quench: rapid cooling duplicate gear obtains quenched martensite tissue;
(3), tempering: timely tempering 180-220 ℃ after quenching, insulation 120-150min;
(4), cooling: air cooling is to room temperature.
2. the induction heating high frequency heat treatment process of duplicate gear according to claim 1, is characterized in that, described in be contoured to magnet ring stream sensing apparatus and have bidirectional inductive ring.
3. the induction heating high frequency heat treatment process of duplicate gear according to claim 1, is characterized in that, described interrupted heating mode is: heating 20s-stops 5s-heating 15s-and stops 5s-heating 10s-and stop.
4. the induction heating high frequency heat treatment process of duplicate gear according to claim 1, is characterized in that, in quenching step, the type of cooling is: oil cooling stirs.
5. the induction heating high frequency heat treatment process of duplicate gear according to claim 4, is characterized in that, the temperature of described cooling oil is 40-80 ℃.
6. according to the induction heating high frequency heat treatment process of the duplicate gear described in claim 1 to 5 any one, it is characterized in that, duplicate gear adopts 38CrSi to make, and the required transition temperature of phase transformation is 900 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310446380.7A CN103526006A (en) | 2013-09-26 | 2013-09-26 | High-frequency induction heating and heat processing technology of duplicate gear |
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| CN201310446380.7A CN103526006A (en) | 2013-09-26 | 2013-09-26 | High-frequency induction heating and heat processing technology of duplicate gear |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104818377A (en) * | 2015-05-15 | 2015-08-05 | 厦门真冈热处理有限公司 | Heat treatment method of lawn mower sprockets and special heat treatment tool for lawn mower sprockets |
| CN105936957A (en) * | 2015-12-19 | 2016-09-14 | 綦江祥和机械有限公司 | Dual-ring double quenching device for duplicate gear |
| CN108486351A (en) * | 2018-02-05 | 2018-09-04 | 重庆机床(集团)有限责任公司 | A kind of process for quenching of the thin-walled type gear with internal spline |
| CN108977637A (en) * | 2018-08-20 | 2018-12-11 | 广州市机电工业研究所 | A kind of straight bevel gear surface induction hardening method and its application |
| CN113293265A (en) * | 2021-05-31 | 2021-08-24 | 湖州金鼎精密科技有限公司 | Quenching device for duplicate gear |
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| JPH08295925A (en) * | 1995-04-25 | 1996-11-12 | Mazda Motor Corp | High frequency heating method and apparatus thereof |
| CN101838729A (en) * | 2009-03-20 | 2010-09-22 | 王锦堂 | Sprocket tooth part induction heat treatment process |
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2013
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| JPH08295925A (en) * | 1995-04-25 | 1996-11-12 | Mazda Motor Corp | High frequency heating method and apparatus thereof |
| CN101838729A (en) * | 2009-03-20 | 2010-09-22 | 王锦堂 | Sprocket tooth part induction heat treatment process |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104818377A (en) * | 2015-05-15 | 2015-08-05 | 厦门真冈热处理有限公司 | Heat treatment method of lawn mower sprockets and special heat treatment tool for lawn mower sprockets |
| CN105936957A (en) * | 2015-12-19 | 2016-09-14 | 綦江祥和机械有限公司 | Dual-ring double quenching device for duplicate gear |
| CN108486351A (en) * | 2018-02-05 | 2018-09-04 | 重庆机床(集团)有限责任公司 | A kind of process for quenching of the thin-walled type gear with internal spline |
| CN108486351B (en) * | 2018-02-05 | 2019-10-18 | 重庆机床(集团)有限责任公司 | A kind of process for quenching of the thin-walled type gear with internal spline |
| CN108977637A (en) * | 2018-08-20 | 2018-12-11 | 广州市机电工业研究所 | A kind of straight bevel gear surface induction hardening method and its application |
| CN108977637B (en) * | 2018-08-20 | 2023-10-13 | 广州市广智机电工业研究所有限公司 | Surface induction quenching method for straight bevel gear and application thereof |
| CN113293265A (en) * | 2021-05-31 | 2021-08-24 | 湖州金鼎精密科技有限公司 | Quenching device for duplicate gear |
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Application publication date: 20140122 |