CN105780017A - Heat treatment technology for automobile gearbox gear - Google Patents
Heat treatment technology for automobile gearbox gear Download PDFInfo
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- CN105780017A CN105780017A CN201410761381.5A CN201410761381A CN105780017A CN 105780017 A CN105780017 A CN 105780017A CN 201410761381 A CN201410761381 A CN 201410761381A CN 105780017 A CN105780017 A CN 105780017A
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- carburizing
- heat treatment
- gear
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- automobile gearbox
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Abstract
The invention discloses a heat treatment technology for an automobile gearbox gear. The heat treatment technology comprises the following steps that 1, the technological process comprises the steps of blank forming, preheating treatment, cutting machining, carburizing or carbonitriding, finish heat treatment, shot blasting and finish machining; and 2, according to the technological requirements, (1) preheating treatment, that is, normalizing is conducted, specifically, the normalizing process temperature is 950 DEG C-970 DEG C, after being well burned, the automobile gearbox gear is subjected to air cooling or cooling through air blowing and atomizing, and if the hardness is low, the measure that water cooling is conducted first and then air cooling is conducted can be adopted; (2) carburizing is conducted, and the carburizing temperature is 920 DEG C-940 DEG C; (3) the finish heat treatment process is conducted on the automobile gearbox gear subjected to carburizing, specifically, after carburizing is conducted and the furnace temperature is lowered to 850 DEG C-860 DEG C, the automobile gearbox gear is taken out of a furnace and directly quenched; and (4) direct quenching after carburizing cannot be conducted under the following situations, instead, the method of primary heating quenching and low-temperature tempering is adopted so that the technical requirements of the gear can be met, and the situations involve gears which are subjected to carburizing and need to be subjected to turning machining again, and gears which cannot be directly quenched due to limitation of the heat treatment equipment conditions. According to the heat treatment technology for the automobile gearbox gear, the method is simple, and the performances of the processed gear in all aspects are all significantly improved.
Description
Technical field
The present invention relates to a kind of gearbox gear Technology for Heating Processing.
Background technology
Gearbox gear is the vitals of automobile, tractor engine; for changing the velocity ratio of engine crankshaft and power transmission shaft: therefore the flank of tooth works under higher load (shock loading and alternate load etc.); therefore grind quickly; in the course of the work; power is transmitted by the contact of the flank of tooth; two flank of tooth are in relative movement; existing rolling also has slip; there is bigger internal stress and frictional force; frequent gear shift makes a root be impacted; requiring that change speed gear box relatively has high bending resistance radian, contact fatigue strength and good wearability, heart portion has enough
Intensity and impact flexibility.
Summary of the invention
Because the drawbacks described above of prior art, the technical problem to be solved is to provide the Technology for Heating Processing of a kind of automobile gearbox gear, and this heat-treatment technology method is simple, and the gear various aspects of performance after process is all obviously improved.
For achieving the above object, the invention provides the Technology for Heating Processing of a kind of automobile gearbox gear, comprise the steps, 1) technological process: blank forming one conditioning treatment one machining one carburizing or carbonitriding one finished heat treatment one shot-peening one polish；
2) technological requirement: (1) conditioning treatment-normalizing: normalizing process temperature is 950-970 DEG C, air cooling or blowing, spray cooling after thoroughly burning, if hardness is low takes the measure of air cooling after first water-cooled；
(2) carburizing: carburizing temperature is the Final Heat Treatment Process after 920-940 DEG C of (3) carburizing: treat after carburizing that furnace temperature is down to 850-860 DEG C of direct quenching of coming out of the stove；
(4) following situations can not direct quenching after carburizing, and to adopt a heating quenching+lonneal method, just can ensure that the technology of gear requires: for needing to carry out again the gear that turning adds after carburizing；Owing to the restriction of Equipment for Heating Processing condition can not carry out the gear of direct quenching.
The invention has the beneficial effects as follows: present invention process method is simple, and the gear various aspects of performance after process is all obviously improved.
Detailed description of the invention
Technical scheme disclosed by the invention is the Technology for Heating Processing of a kind of automobile gearbox gear, comprises the steps, 1) and technological process: blank forming one conditioning treatment one machining one carburizing or carbonitriding one finished heat treatment one shot-peening one polish；
2) technological requirement: (1) conditioning treatment-normalizing: normalizing process temperature is 950-970 DEG C, air cooling or blowing, spray cooling after thoroughly burning, if hardness is low takes the measure of air cooling after first water-cooled；
(2) carburizing: carburizing temperature is the Final Heat Treatment Process after 920-940 DEG C of (3) carburizing: treat after carburizing that furnace temperature is down to 850-860 DEG C of direct quenching of coming out of the stove；
(4) following situations can not direct quenching after carburizing, and to adopt a heating quenching+lonneal method, just can ensure that the technology of gear requires: for needing to carry out again the gear that turning adds after carburizing；Owing to the restriction of Equipment for Heating Processing condition can not carry out the gear of direct quenching.
This heat-treatment technology method is simple, and the gear various aspects of performance after process is all obviously improved.
The preferred embodiment of the present invention described in detail above.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to the design of the present invention without creative work.Therefore, all technical staff in the art, all should in the protection domain being defined in the patent claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (1)
1. a Technology for Heating Processing for automobile gearbox gear, comprises the steps, 1) and technological process: blank forming one conditioning treatment one machining one carburizing or carbonitriding one finished heat treatment one shot-peening one polish；
2) technological requirement: (1) conditioning treatment-normalizing: normalizing process temperature is 950-970 DEG C, air cooling or blowing, spray cooling after thoroughly burning, if hardness is low takes the measure of air cooling after first water-cooled；
(2) carburizing: carburizing temperature is the Final Heat Treatment Process after 920-940 DEG C of (3) carburizing: treat after carburizing that furnace temperature is down to 850-860 DEG C of direct quenching of coming out of the stove；
(4) following situations can not direct quenching after carburizing, and to adopt a heating quenching+lonneal method, just can ensure that the technology of gear requires: for needing to carry out again the gear that turning adds after carburizing；Owing to the restriction of Equipment for Heating Processing condition can not carry out the gear of direct quenching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410761381.5A CN105780017A (en) | 2014-12-13 | 2014-12-13 | Heat treatment technology for automobile gearbox gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410761381.5A CN105780017A (en) | 2014-12-13 | 2014-12-13 | Heat treatment technology for automobile gearbox gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105780017A true CN105780017A (en) | 2016-07-20 |
Family
ID=56373398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410761381.5A Pending CN105780017A (en) | 2014-12-13 | 2014-12-13 | Heat treatment technology for automobile gearbox gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105780017A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106191645A (en) * | 2016-08-25 | 2016-12-07 | 中建材宁国新马耐磨材料有限公司 | A kind of aluminium ore high-chromium wear-resistant ball Technology for Heating Processing |
| CN106282824A (en) * | 2016-08-25 | 2017-01-04 | 中建材宁国新马耐磨材料有限公司 | A kind of Technology for Heating Processing of wear resistant corrosion resistant multicomponent alloy steel liner plate |
-
2014
- 2014-12-13 CN CN201410761381.5A patent/CN105780017A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106191645A (en) * | 2016-08-25 | 2016-12-07 | 中建材宁国新马耐磨材料有限公司 | A kind of aluminium ore high-chromium wear-resistant ball Technology for Heating Processing |
| CN106282824A (en) * | 2016-08-25 | 2017-01-04 | 中建材宁国新马耐磨材料有限公司 | A kind of Technology for Heating Processing of wear resistant corrosion resistant multicomponent alloy steel liner plate |
| CN106282824B (en) * | 2016-08-25 | 2017-12-29 | 中建材宁国新马耐磨材料有限公司 | A kind of Technology for Heating Processing of wear resistant corrosion resistant multicomponent alloy steel liner plate |
| CN106191645B (en) * | 2016-08-25 | 2018-02-16 | 中建材宁国新马耐磨材料有限公司 | A kind of aluminium ore high-chromium wear-resistant ball Technology for Heating Processing |
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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: 20160720 |
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| WD01 | Invention patent application deemed withdrawn after publication |