CN104589003A - High-carbon steel gear machining process for gear pump - Google Patents
High-carbon steel gear machining process for gear pump Download PDFInfo
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- CN104589003A CN104589003A CN201410749696.8A CN201410749696A CN104589003A CN 104589003 A CN104589003 A CN 104589003A CN 201410749696 A CN201410749696 A CN 201410749696A CN 104589003 A CN104589003 A CN 104589003A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
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Abstract
The invention relates to the field of oil pumps, in particular to a high-carbon steel gear machining process for a gear pump. The high-carbon steel gear machining process includes the following operation steps of firstly, conducting discharging and forging to form a cylindrical blank; secondly, uniformizing compositions of the forged blank; thirdly, conducting machining; fourthly, conducting hobbing through a hobbing machine, and then conducting gear shaving after hobbing; fifthly, broaching key grooves on a broaching machine; sixthly, conducting carbonitriding on a gear; seventhly, conducting flaw detecting, finished product inspecting, cleaning and anti-rust packaging, and finally putting finished products in storage. By controlling the austenitizing texture, the after-austenitizing cooling speed, the intermediate-temperature isothermal temperature and isothermal time of high-carbon steel, plate-strip-shaped bainite composed of single-phase ferrite with supersaturated carbon and texture composed of fine granular carbide evenly distributed are obtained, and the tenacity of the high-carbon steel is improved.
Description
Technical field
The present invention relates to lubricating oil pump field, specifically belong to a kind of gear pump Gearmaking Technology.
Background technology
When the engine operates, the driven wheel on camshaft drives the travelling gear of lubricating oil pump, the driving gear be fixed on driving gear shaft is rotated, thus drives the reciprocal rotation of driven tooth crop rotation, machine oil is delivered to out oil pocket from oil suction chamber along backlash and pump wall.The accuracy of manufacture of Oil pump drive gear directly affects the serviceability of lubricating oil pump, and the degree of driven wheel is the vitals of lubricating oil pump.
Existing gear pump gear mostly selects the good alloy manufacture of performance, and the manufacturing process of the gear that alloy material is made is often more complicated, and cost is higher.
Conventionally, in steel, carbon content is too high, and carbide is easy to netted precipitation, and it is large to cause material fragility, and thus high-carbon steel is seldom applied in engineering.Along with the development of materials processing technology, the research of high-carbon steel obtains breakthrough.The general carbide adopting thermo-mechanical deformation or multiple heat treatment technology to control high-carbon steel forms state, to improve the fragility of steel both at home and abroad at present.But the former brings environmental noise pollution, and the latter has high energy consumption, is all unfavorable for industrial applications.
According to middle temperature isothermal heat treatment process, form the lath-shaped bainite be made up of the single-phase ferrite containing supersaturation carbon and add tiny equally distributed granular carbonization fabric texture, namely controlling carbon atom is mainly present in bainite ferrite with solution, effectively to overcome carbide with the precipitation of bulk or shape of knotting, and then improve the toughness of material.This not only makes the application potential quality of high-carbon steel be shown, and is developed a kind of novel high-carbon steel processing technology.High-carbon steel has future in engineering applications comparatively widely, warm isothermal heat treatment process in control, obtaining the research adding tiny equally distributed granular carbonization fabric texture by the lath-shaped bainite formed containing the single-phase ferrite of supersaturation carbon has strong engineering background.But make high-carbon steel have to add tiny equally distributed granular carbonization fabric texture by the lath-shaped bainite formed containing the single-phase ferrite of supersaturation carbon be more difficult.Crucial problem is the heat-treat condition how selecting to be suitable for, as the cooling velocity after austenitizing temperature, austenitizing, middle temperature isothermal temperature and isothermal time etc. control to organize the coordination of formation condition to combine.At present, the research work adding by the lath-shaped bainite that middle temperature isothermal heat treatment process acquisition is made up of the single-phase ferrite containing supersaturation carbon the tissue that tiny equally distributed granular carbide forms about high-carbon steel rarely has report both at home and abroad.
Application number 201210392812.6 discloses a kind of heat treatment method of medium and high carbon steel, take steel as primary raw material, according to above component proportion, carries out alloying; Annealing in process; Austenitizing process; Isothermal hardening or incomplete quenching is carried out again, insulation 400s at the temperature of 260 DEG C; Carry out again oozing nano aluminium oxide; Finally take out steel workpiece, cool to room temperature.The method step more complicated, cost requirement is higher.
China Patent No. 02150879.8, publication date on 05 14th, 2003, disclose the patent document that a name is called high-strength superhigh-carbon steel and production technology thereof, this high-strength superhigh-carbon steel and production technology thereof, its alloying component is (percentage by weight): C: 1.0 ~ 2.0%, Cr: 0.5 ~ 2.0%, Mn: 0.2 ~ 0.8%, one, remaining Fe in Si and Al; Production technology comprises chooses suitable Addition ofelements, obtains blank with spray deposition processing; Then carry out aximal deformation value (drafts reaches 50% ~ 70%) hot rolling, after air cooling, resulting materials need not modifier treatment, can reach the yield strength of about 1000MPa and the tensile strength of about 1300MPa, and have the plasticity of 8 ~ 11% percentage elongation.Reaction-injection moulding blank has excellent high temperature deformation ability owing to forming evenly tiny tissue.The hot rolling of aximal deformation value can be implemented thus, make to organize full densification and more even refinement, thus obtain high-strength superhigh-carbon steel material.The method is simply efficient, reduces energy resource consumption and production cost, is convenient to realize large-scale production.
Above-mentioned patent indicates constituent content and the production technology of superhigh carbon steel, but does not provide its heat treatment mode.Its treatment process is different from traditional high-carbon steel, and this steel needs deformation process to obtain more dislocation substructure when austenitizing heats, and obtains disperse spheroidite and ferrite matrix after complete austenitizing quenching through high tempering.Owing to there being a large amount of superfine carbides, in post bake process, carbide will hinder Austenite Grain Growth, obtain superfine austenite crystal.Tiny austenite crystal can obtain required ultra-fine matrix under different cooling conditions, and as air cooling can obtain ultra-fine pearlite, quenching can obtain ultra-fine martensite.The problem that but the wearability that the martensite that traditional process for quenching obtains exists is not enough, there is fatigability difference.
Summary of the invention
The object of this invention is to provide a kind of gear pump high carbon steel gear processing technology, this technique can overcome carbide and separate out with bulk or shape of knotting, make that material obtains by forming containing the single-phase ferrite of supersaturation carbon, metallographic present the tissue that granular carbide that the bainite structure of lath-shaped and fine uniform distribute forms, thus improve the toughness properties of material.
Technical scheme of the present invention is as follows:
A kind of gear pump high carbon steel gear processing technology, includes following operating procedure:
The first step, blanking carry out being forged to a cylindrical stock;
Second step, forging stock component Homogenization Treatments;
3rd step, machined;
4th step, utilize gear-hobbing machine to carry out gear hobbing, carry out shaving process again after gear hobbing, shaving precision reaches 6 class precisions;
5th step, on broaching machine, draw keyway;
6th step, carry out carbo-nitriding process to gear, gear surface hardness 57 ~ 63HRC, core hardness 33 ~ 45HRC, infiltration layer 0.5 ~ 0.8mm, metallographic structure reaches 1-5 level;
7th step, process flaw detection, product inspection, cleaning rust-proof packaging, final finished is put in storage.
Forging stock component Homogenization Treatments described in described second step: be warming up to 850-1000 DEG C and isothermal homogenize annealing in process at such a temperature, the processing time is 3 hours;
Influence of high austenizing temp process: carry out isothermal processes by after said components Homogenization Treatments at 900-950 DEG C of temperature, the processing time is 20 minutes;
Cooling processing after influence of high austenizing temp: the forging stock temperature after influence of high austenizing temp process is cooled to 200-270 DEG C from 860-920 DEG C, cooling velocity is 25-35 DEG C/s;
Middle temperature isothermal processes: warm isothermal processes during the forging stock after above-mentioned rear cooling processing is carried out under 200-280 DEG C of temperature, the isothermal processes time is 2-60 minute, the tissue that the granular carbide that the lath-shaped bainite that the acquisition of this forging stock isothermal is made up of the single-phase ferrite containing supersaturation carbon and fine uniform distribute forms, after isothermal processes, water-cooled is to room temperature.
Described carry out carbo-nitriding process to gear and carry out in Yi Pusen industrial furnace, gear surface hardness 60HRC, core hardness 38HRC, infiltration layer 0.5 ~ 0.8mm, metallographic structure reaches 3 grades.
Increase a step between described 7th step and the 6th step, the gear shaped is put into nitriding furnace, be then warming up to 400 DEG C ~ 500 DEG C, wherein programming rate 80 DEG C ~ 120 DEG C/h, ensure that the scope of vacuum in stove is 400-700pa; Then pass into ammonia in nitriding furnace, keep in-furnace temperature at 500 DEG C-540 DEG C, per minutely pass into ammonia 1.6 ~ 2L, in stove, vacuum is about 460pa, and the time is 5.5h; Then be warming up to 550 DEG C-560 DEG C, continue to pass into ammonia by 1.6 ~ 2L per minute, pass into nitrogen simultaneously, pass into earth solution by 0.2 ~ 0.25L per minute by 1 ~ 1.5L per minute, in stove, vacuum is about 550pa, and the time is 3 ~ 4h.
The step of numeral-controlled internal grinder refining gear face is also comprised between described 6th step and the 7th step.
On surface grinding machine, end face is refined again after described numeral-controlled internal grinder refining the step of gear face.
Major diameter high carbon steel gear of the present invention, tooth cover Technology for Heating Processing has following beneficial effect:
This heat treatment process is: first carry out uniform composition annealing to as cast condition material, afterwards to material at high temperature austenitizing, then cool, be cooled to middle temperature isothermal temperature interval, again at this temperature range isothermal, the tissue formed with the granular carbide obtaining lath-shaped bainite and the fine uniform distribution be made up of the single-phase ferrite containing supersaturation carbon.
By controlling the cooling velocity of high-carbon steel after the structural state, austenitizing of austenitizing, middle temperature isothermal temperature and isothermal time, the lath-shaped bainite that acquisition is made up of the single-phase ferrite containing supersaturation carbon and the tissue that the granular carbide that fine uniform distributes forms, to improve the toughness of high-carbon steel.
Gear wheel in large diameter of the present invention, tooth cover processing technology, makes to overlap aberration control in acceptability limit by machining gears or tooth, and basic elimination skin decarburization problem.
Detailed description of the invention
Be described in further detail below in conjunction with the Technology for Heating Processing of embodiment to a kind of high-carbon steel of the present invention bevel gear.
embodiment one:
A kind of gear pump high carbon steel gear processing technology, includes following operating procedure:
The first step, blanking carry out being forged to a cylindrical stock;
Second step, forging stock component Homogenization Treatments; Described forging stock component Homogenization Treatments: be warming up to 850 DEG C and isothermal homogenize annealing in process at such a temperature, the processing time is 3 hours; Influence of high austenizing temp process: carry out isothermal processes by after said components Homogenization Treatments at 900 DEG C of temperature, the processing time is 20 minutes; Cooling processing after influence of high austenizing temp: the forging stock temperature after influence of high austenizing temp process is cooled to 200 DEG C from 860 DEG C, cooling velocity is 25-35 DEG C/s; Middle temperature isothermal processes: warm isothermal processes during the forging stock after above-mentioned rear cooling processing is carried out under 200 DEG C of temperature, the isothermal processes time is 2-60 minute, the tissue that the granular carbide that the lath-shaped bainite that the acquisition of this forging stock isothermal is made up of the single-phase ferrite containing supersaturation carbon and fine uniform distribute forms, after isothermal processes, water-cooled is to room temperature.Described in Yi Pusen industrial furnace, carry out carbo-nitriding process to gear, gear surface hardness 60HRC, core hardness 38HRC, infiltration layer 0.5 ~ 0.8mm, metallographic structure reaches 3 grades.
3rd step, machined;
4th step, utilize gear-hobbing machine to carry out gear hobbing, carry out shaving process again after gear hobbing, shaving precision reaches 6 class precisions;
5th step, on broaching machine, draw keyway;
6th step, in Yi Pusen industrial furnace, carry out carbo-nitriding process to gear, gear surface hardness 57 ~ 63HRC, core hardness 33 ~ 45HRC, infiltration layer 0.5 ~ 0.8mm, metallographic structure reaches 1-5 level;
7th step, the gear shaped is put into nitriding furnace, be then warming up to 400 DEG C, wherein programming rate 80 DEG C ~ 120 DEG C/h, ensure that the scope of vacuum in stove is 400-700pa; Then pass into ammonia in nitriding furnace, keep in-furnace temperature at 500 DEG C, per minutely pass into ammonia 1.6 ~ 2L, in stove, vacuum is about 460pa, and the time is 5.5h; Then be warming up to 550 DEG C, continue to pass into ammonia by 1.6 ~ 2L per minute, pass into nitrogen simultaneously, pass into earth solution by 0.2 ~ 0.25L per minute by 1 ~ 1.5L per minute, in stove, vacuum is about 550pa, and the time is 3 ~ 4h;
8th step, process flaw detection, product inspection, cleaning rust-proof packaging, final finished is put in storage.Further, further, the step of numeral-controlled internal grinder refining gear face is also comprised between described 7th step and the 8th step.
Further, on surface grinding machine, end face is refined again after described numeral-controlled internal grinder refining the step of gear face.
embodiment two:
A kind of gear pump high carbon steel gear processing technology, includes following operating procedure:
The first step, blanking carry out being forged to a cylindrical stock;
Second step, forging stock component Homogenization Treatments; Forging stock component Homogenization Treatments described in described second step: be warming up to 870 DEG C and isothermal homogenize annealing in process at such a temperature, the processing time is 3 hours; Influence of high austenizing temp process: carry out isothermal processes by after said components Homogenization Treatments at 900 DEG C of temperature, the processing time is 20 minutes; Cooling processing after influence of high austenizing temp: the forging stock temperature after influence of high austenizing temp process is cooled to 200 DEG C from 860 DEG C, cooling velocity is 25-35 DEG C/s; Middle temperature isothermal processes: warm isothermal processes during the forging stock after above-mentioned rear cooling processing is carried out under 200 DEG C of temperature, the isothermal processes time is 2-60 minute, the tissue that the granular carbide that the lath-shaped bainite that the acquisition of this forging stock isothermal is made up of the single-phase ferrite containing supersaturation carbon and fine uniform distribute forms, after isothermal processes, water-cooled is to room temperature.Described in Yi Pusen industrial furnace, carry out carbo-nitriding process to gear, gear surface hardness 60HRC, core hardness 38HRC, infiltration layer 0.5 ~ 0.8mm, metallographic structure reaches 3 grades.
3rd step, machined;
4th step, utilize gear-hobbing machine to carry out gear hobbing, carry out shaving process again after gear hobbing, shaving precision reaches 6 class precisions;
5th step, on broaching machine, draw keyway;
6th step, in Yi Pusen industrial furnace, carry out carbo-nitriding process to gear, gear surface hardness 57 ~ 63HRC, core hardness 33 ~ 45HRC, infiltration layer 0.5 ~ 0.8mm, metallographic structure reaches 1-5 level;
7th step, the gear shaped is put into nitriding furnace, be then warming up to 450 DEG C, wherein programming rate 80 DEG C ~ 120 DEG C/h, ensure that the scope of vacuum in stove is 400-700pa; Then pass into ammonia in nitriding furnace, keep in-furnace temperature at 520 DEG C, per minutely pass into ammonia 1.6 ~ 2L, in stove, vacuum is about 460pa, and the time is 5.5h; Then be warming up to 550 DEG C, continue to pass into ammonia by 1.6 ~ 2L per minute, pass into nitrogen simultaneously, pass into earth solution by 0.2 ~ 0.25L per minute by 1 ~ 1.5L per minute, in stove, vacuum is about 550pa, and the time is 3 ~ 4h;
8th step, process flaw detection, product inspection, cleaning rust-proof packaging, final finished is put in storage.
Further, the step of numeral-controlled internal grinder refining gear face is also comprised between described 7th step and the 8th step.
Further, on surface grinding machine, end face is refined again after described numeral-controlled internal grinder refining the step of gear face.
embodiment three:
A kind of gear pump high carbon steel gear processing technology, includes following operating procedure:
The first step, blanking carry out being forged to a cylindrical stock;
Second step, forging stock component Homogenization Treatments; Forging stock component Homogenization Treatments described in described second step: be warming up to 1000 DEG C and isothermal homogenize annealing in process at such a temperature, the processing time is 3 hours; Influence of high austenizing temp process: carry out isothermal processes by after said components Homogenization Treatments at 950 DEG C of temperature, the processing time is 20 minutes; Cooling processing after influence of high austenizing temp: the forging stock temperature after influence of high austenizing temp process is cooled to 200 DEG C from 920 DEG C, cooling velocity is 35 DEG C/s; Middle temperature isothermal processes: warm isothermal processes during the forging stock after above-mentioned rear cooling processing is carried out under 200 DEG C of temperature, the isothermal processes time is 2-60 minute, the tissue that the granular carbide that the lath-shaped bainite that the acquisition of this forging stock isothermal is made up of the single-phase ferrite containing supersaturation carbon and fine uniform distribute forms, after isothermal processes, water-cooled is to room temperature.Described in Yi Pusen industrial furnace, carry out carbo-nitriding process to gear, gear surface hardness 60HRC, core hardness 38HRC, infiltration layer 0.5 ~ 0.8mm, metallographic structure reaches 3 grades.
3rd step, machined;
4th step, utilize gear-hobbing machine to carry out gear hobbing, carry out shaving process again after gear hobbing, shaving precision reaches 6 class precisions;
5th step, on broaching machine, draw keyway;
6th step, in Yi Pusen industrial furnace, carry out carbo-nitriding process to gear, gear surface hardness 57 ~ 63HRC, core hardness 33 ~ 45HRC, infiltration layer 0.5 ~ 0.8mm, metallographic structure reaches 1-5 level;
7th step, the gear shaped is put into nitriding furnace, be then warming up to 450 DEG C, wherein programming rate 80 DEG C ~ 120 DEG C/h, ensure that the scope of vacuum in stove is 400-700pa; Then pass into ammonia in nitriding furnace, keep in-furnace temperature at 520 DEG C, per minutely pass into ammonia 1.6 ~ 2L, in stove, vacuum is about 460pa, and the time is 5.5h; Then be warming up to 550 DEG C, continue to pass into ammonia by 1.6 ~ 2L per minute, pass into nitrogen simultaneously, pass into earth solution by 0.2 ~ 0.25L per minute by 1 ~ 1.5L per minute, in stove, vacuum is about 550pa, and the time is 3 ~ 4h;
8th step, process flaw detection, product inspection, cleaning rust-proof packaging, final finished is put in storage.
Further, the step of numeral-controlled internal grinder refining gear face is also comprised between described 7th step and the 8th step.
Further, on surface grinding machine, end face is refined again after described numeral-controlled internal grinder refining the step of gear face.
Claims (6)
1. a gear pump high carbon steel gear processing technology, is characterized in that, includes following operating procedure:
The first step, blanking carry out being forged to a cylindrical stock;
Second step, forging stock component Homogenization Treatments;
3rd step, machined;
4th step, utilize gear-hobbing machine to carry out gear hobbing, carry out shaving process again after gear hobbing, shaving precision reaches 6 class precisions;
5th step, on broaching machine, draw keyway;
6th step, carry out carbo-nitriding process to gear, gear surface hardness 57 ~ 63HRC, core hardness 33 ~ 45HRC, infiltration layer 0.5 ~ 0.8mm, metallographic structure reaches 1-5 level;
7th step, process flaw detection, product inspection, cleaning rust-proof packaging, final finished is put in storage.
2. according to the high carbon steel gear processing technology of gear pump described in claim 1, it is characterized in that, forging stock component Homogenization Treatments described in described second step: be warming up to 850-1000 DEG C and isothermal homogenize annealing in process at such a temperature, the processing time is 3 hours; Influence of high austenizing temp process: carry out isothermal processes by after said components Homogenization Treatments at 900-950 DEG C of temperature, the processing time is 20 minutes; Cooling processing after influence of high austenizing temp: the forging stock temperature after influence of high austenizing temp process is cooled to 200-270 DEG C from 860-920 DEG C, cooling velocity is 25-35 DEG C/s; Middle temperature isothermal processes: warm isothermal processes during the forging stock after above-mentioned rear cooling processing is carried out under 200-280 DEG C of temperature, the isothermal processes time is 2-60 minute, the tissue that the granular carbide that the lath-shaped bainite that the acquisition of this forging stock isothermal is made up of the single-phase ferrite containing supersaturation carbon and fine uniform distribute forms, after isothermal processes, water-cooled is to room temperature.
3. according to the high carbon steel gear processing technology of gear pump described in claim 1, it is characterized in that, described carbo-nitriding process is carried out to gear carry out in Yi Pusen industrial furnace, gear surface hardness 60HRC, core hardness 38HRC, infiltration layer 0.5 ~ 0.8mm, metallographic structure reaches 3 grades.
4. according to the high carbon steel gear processing technology of gear pump described in claim 1, it is characterized in that, a step is increased between described 7th step and the 6th step, the gear shaped is put into nitriding furnace, then 400 DEG C ~ 500 DEG C are warming up to, wherein programming rate 80 DEG C ~ 120 DEG C/h, ensures that the scope of vacuum in stove is 400-700pa; Then pass into ammonia in nitriding furnace, keep in-furnace temperature at 500 DEG C-540 DEG C, per minutely pass into ammonia 1.6 ~ 2L, in stove, vacuum is about 460pa, and the time is 5.5h; Then be warming up to 550 DEG C-560 DEG C, continue to pass into ammonia by 1.6 ~ 2L per minute, pass into nitrogen simultaneously, pass into earth solution by 0.2 ~ 0.25L per minute by 1 ~ 1.5L per minute, in stove, vacuum is about 550pa, and the time is 3 ~ 4h.
5. according to the high carbon steel gear processing technology of gear pump described in claim 1, it is characterized in that, between described 6th step and the 7th step, also comprise the step of numeral-controlled internal grinder refining gear face.
6. according to the high carbon steel gear processing technology of gear pump described in claim 5, it is characterized in that, after described numeral-controlled internal grinder refining the step of gear face, on surface grinding machine, refine end face again.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110408885A (en) * | 2019-08-27 | 2019-11-05 | 南京工程学院 | The automobile-used light-duty gear of one kind and its manufacturing process |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56152540A (en) * | 1980-04-23 | 1981-11-26 | Nippon Seiko Kk | Gear machining method including gear cutting through fusing |
| JPS5935630A (en) * | 1982-08-24 | 1984-02-27 | Komatsu Ltd | Heat treatment of gear |
| CN1603057A (en) * | 2004-08-26 | 2005-04-06 | 薛安志 | Precision casting and extrusion processing technique of high-carbon chromium bearing steel cycloid wheel |
| CN1861313A (en) * | 2006-03-15 | 2006-11-15 | 中国第一汽车集团公司无锡柴油机厂 | Art for mfg. Austempered Ductile iron gear for diesel engine |
| CN101285163A (en) * | 2008-05-12 | 2008-10-15 | 十堰市郧齿汽车零部件有限公司 | Nitriding method for engine timing gear with rigid tooth face |
| CN102851470A (en) * | 2012-10-08 | 2013-01-02 | 天津理工大学 | Heat treatment technique capable of overcoming bulky or cellular precipitation of superhigh-carbon steel carbide |
| CN102950435A (en) * | 2012-10-27 | 2013-03-06 | 富莱茵汽车部件有限公司 | Preparation method of gear of hydraulic pump for preventing agglutination of tooth surface |
| CN103786031A (en) * | 2014-01-18 | 2014-05-14 | 中南大学 | Process for forming moderately-strong heat-resisting magnesium alloy die-forged piece |
-
2014
- 2014-12-10 CN CN201410749696.8A patent/CN104589003A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56152540A (en) * | 1980-04-23 | 1981-11-26 | Nippon Seiko Kk | Gear machining method including gear cutting through fusing |
| JPS5935630A (en) * | 1982-08-24 | 1984-02-27 | Komatsu Ltd | Heat treatment of gear |
| CN1603057A (en) * | 2004-08-26 | 2005-04-06 | 薛安志 | Precision casting and extrusion processing technique of high-carbon chromium bearing steel cycloid wheel |
| CN1861313A (en) * | 2006-03-15 | 2006-11-15 | 中国第一汽车集团公司无锡柴油机厂 | Art for mfg. Austempered Ductile iron gear for diesel engine |
| CN101285163A (en) * | 2008-05-12 | 2008-10-15 | 十堰市郧齿汽车零部件有限公司 | Nitriding method for engine timing gear with rigid tooth face |
| CN102851470A (en) * | 2012-10-08 | 2013-01-02 | 天津理工大学 | Heat treatment technique capable of overcoming bulky or cellular precipitation of superhigh-carbon steel carbide |
| CN102950435A (en) * | 2012-10-27 | 2013-03-06 | 富莱茵汽车部件有限公司 | Preparation method of gear of hydraulic pump for preventing agglutination of tooth surface |
| CN103786031A (en) * | 2014-01-18 | 2014-05-14 | 中南大学 | Process for forming moderately-strong heat-resisting magnesium alloy die-forged piece |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110408885A (en) * | 2019-08-27 | 2019-11-05 | 南京工程学院 | The automobile-used light-duty gear of one kind and its manufacturing process |
| CN110408885B (en) * | 2019-08-27 | 2021-06-11 | 南京工程学院 | Light gear for vehicle and manufacturing process thereof |
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Application publication date: 20150506 |