CN103978209B - Transmission gear manufacturing process based on powder metallurgy - Google Patents
Transmission gear manufacturing process based on powder metallurgy Download PDFInfo
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- CN103978209B CN103978209B CN201410129782.9A CN201410129782A CN103978209B CN 103978209 B CN103978209 B CN 103978209B CN 201410129782 A CN201410129782 A CN 201410129782A CN 103978209 B CN103978209 B CN 103978209B
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Abstract
The invention belongs to the technical field of gear manufacturing, and particularly relates to a transmission gear manufacturing process based on powder metallurgy. The transmission gear manufacturing process comprises the following steps of raw material preparation, formation, sintering, tooth brushing, heat treatment, cleaning, vacuum oil immersion and final inspection, wherein in the sintering process, the sintering process parameters are as follows: in the degreasing stage, the duration time is 10 minutes, and the sintering furnace temperature is 645 to 655 DEG C; in the preheating stage, the duration time is 20 minutes, the sintering furnace temperature in the first 10 minutes is 745 to 755 DEG C, and the sintering furnace temperature in the last 10 minutes is 845 to 855 DEG C; in the heat insulation stage, the duration time is 30 minutes, and the sintering furnace temperature is 1115 to 1125 DEG C; in the uniform temperature stage, the duration time is 10 minutes, and the sintering furnace temperature is 995 to 1005 DEG C. The performance and the quality of a transmission gear manufactured by the process are good, so the start and stop service life and the work duration are obviously prolonged.
Description
Technical field
The invention belongs to gear manufacture technology field, refers in particular to a kind of travelling gear manufacturing process based on powder metallurgy.
Background technology
Powder metallurgy is a kind of more ripe technique, and it is also relatively conventional that it is used for gear forming；In prior art, powder
The properties of product and quality of the travelling gear that metallurgy is obtained are general, its start and stop life-span at 50,000 times or so, when used in angle grinder
Length is typically at 200 hours or so.
The content of the invention
It is an object of the invention to provide it is a kind of easy to process, the performance and quality better of travelling gear are obtained, it is safe and reliable
Travelling gear manufacturing process based on powder metallurgy.
The object of the present invention is achieved like this：
A kind of travelling gear manufacturing process based on powder metallurgy, comprises the following steps：
(1) powder metallurgy iron based powders are uniformly mixed stand-by by raw material preparation with auxiliary material by proportioning；
(2) it is molded, the quantitative raw material powder for mixing is sent in press, the life of once die stamping forming travelling gear
Base；
(3) sinter, the raw embryo of product is placed on mullite plate, and send into sintering 70min in sintering furnace, in sintering furnace
Appropriate nitrogen and hydrogen is continually fed into, wherein, sintering process parameter is as follows：
In the degreasing stage, duration 10min, sintering furnace temperature is 645-655 DEG C；
Warm-up phase, the sintering furnace temperature of duration 20min, front 10min is 745-755 DEG C, the sintering furnace of rear 10min
Temperature is 845-855 DEG C；
Holding stage, duration 30min, sintering furnace temperature is 1115-1125 DEG C；
Thermophase, duration 10min, sinter furnace temperature for 995-1005 DEG C；
(4) brush teeth, brush teeth is carried out using gear-brushing machine to the travelling gear of semi-finished product；
(5) it is heat-treated, the operation being heat-treated to the travelling gear of semi-finished product is as follows：
1. carburizing, Carburization Treatment is carried out using multipurpose furnace to the travelling gear of semi-finished product；
2. quench, the travelling gear of semi-finished product is quenched in oil-quenching tank, control the oil temperature in oil-quenching tank
Fluid in 110-130 DEG C, and stirring at low speed oil-quenching tank, the cool time is 30 minutes；
3. drain, the travelling gear of the semi-finished product after quenching is carried out in oil-quenching tank, drain the time 40 minutes；
4. clean, the unnecessary fluid on the travelling gear surface of semi-finished product is removed using cleaning machine；
5. it is tempered, by the travelling gear of the semi-finished product after cleaning as being tempered in tempering furnace, temperature control exists
160-180 DEG C, time control is in 120min；
6. hardness is examined eventually, checks whether at least 3 points of the flank of tooth, checking travelling gear case hardness meet standard；
7. metal lographic examination, removes metallographic tooth block or packs inherent quality problem to be checked with batch waste product；
(6) cleaning, the surface of the travelling gear of clean semi-finished product and backlash；
(7) vacuum oil immersion, by the oil immersion in the container of vacuum of the travelling gear of semi-finished product, obtains the travelling gear of finished product；
(8) final acceptance inspection, checks the parameters of finished product travelling gear, it is qualified after can pack and put in storage.
Preferably, the step（5）Heat treatment in, control operation be 2. quenched to stand-by period that 5. operation be tempered≤
180min。
Preferably, the step（2）, step（4）After finishing, the table of the travelling gear with air gun cleaning semi-finished product is both needed to
Face.
Preferably, the step（5）1. the operation of heat treatment has four sub-steps during carburizing, and it is respectively
First samming step：, control 850-870 DEG C of furnace temperature, time 20min；
Step is oozed by force：850-870 DEG C of furnace temperature of control, time 70min, CP0.7；
Cooling step：Control furnace temperature is gradually reduced in the range of 820-840 DEG C, time 15min, CP0.6；
Secondary samming step：820-840 DEG C of furnace temperature of control, time 15min, CP0.6；
In four sub-steps, remain and be passed through 2.5-3.5Nl/min of ammonia；45-55ml/min of methyl alcohol；
2nd, in three, four sub-steps, remain and be passed through propane 5Nl/min；Equilibrium air 5Nl/min.
Preferably, the step（5）And step（6）Between be provided with following three sub-step,
Step（5.1）Inner bore grinding, is ground and controls endoporus error to the travelling gear endoporus of semi-finished product；
Step（5.2）By end face, part surplus is removed with grinding abrasive disk in the end face of the travelling gear of semi-finished product, to repair
Just it is being heat-treated the error of caused semi-finished product travelling gear；
Step（5.3）Vibrations grinding, semi-finished product driving cog is put in oscillating mill, adds grind stone, vibration
20-40 minutes；
The step（5.1）And step（5.2）In, the travelling gear of semi-finished product adds man-hour, is blown clean using air gun, plus
Antirust oil is put on case body special and gone up to work after finishing.
The present invention is prominent and beneficial compared to existing technology to be had the technical effect that：
Using the performance and quality better of the travelling gear obtained by present invention process, it is bright in start and stop life-span and operating time
It is aobvious to get a promotion.
Description of the drawings
Fig. 1 is the process chart of the present invention.
Specific embodiment
With reference to specific embodiment, the present invention is further elucidated, it should be understood that these embodiments are merely to illustrate the present invention.
As shown in figure 1, embodiment 1：A kind of travelling gear manufacturing process based on powder metallurgy, comprises the following steps：
(1) powder metallurgy iron based powders are uniformly mixed stand-by by raw material preparation with auxiliary material by proportioning；
(2) it is molded, the quantitative raw material powder for mixing is sent in press, the life of once die stamping forming travelling gear
Base；
(3) sinter, the raw embryo of product is placed on mullite plate, and send into sintering 70min in sintering furnace, in sintering furnace
Appropriate nitrogen and hydrogen is continually fed into, wherein, sintering process parameter is as follows：
In the degreasing stage, duration 10min, sintering furnace temperature is 645-655 DEG C；
Warm-up phase, the sintering furnace temperature of duration 20min, front 10min is 745-755 DEG C, the sintering furnace of rear 10min
Temperature is 845-855 DEG C；
Holding stage, duration 30min, sintering furnace temperature is 1115-1125 DEG C；
Thermophase, duration 10min, sinter furnace temperature for 995-1005 DEG C；
(4) brush teeth, brush teeth is carried out using gear-brushing machine to the travelling gear of semi-finished product；
(5) it is heat-treated, the operation being heat-treated to the travelling gear of semi-finished product is as follows：
1. carburizing, Carburization Treatment is carried out using multipurpose furnace to the travelling gear of semi-finished product；
2. quench, the travelling gear of semi-finished product is quenched in oil-quenching tank, control the oil temperature in oil-quenching tank
Fluid in 110-130 DEG C, and stirring at low speed oil-quenching tank, the cool time is 30 minutes；
3. drain, the travelling gear of the semi-finished product after quenching is carried out in oil-quenching tank, drain the time 40 minutes；
4. clean, the unnecessary fluid on the travelling gear surface of semi-finished product is removed using cleaning machine；
5. it is tempered, by the travelling gear of the semi-finished product after cleaning as being tempered in tempering furnace, temperature control exists
160-180 DEG C, time control is in 120min；
6. hardness is examined eventually, checks whether at least 3 points of the flank of tooth, checking travelling gear case hardness meet standard；
7. metal lographic examination, removes metallographic tooth block or packs inherent quality problem to be checked with batch waste product；
(6) cleaning, the surface of the travelling gear of clean semi-finished product and backlash；
(7) vacuum oil immersion, by the oil immersion in the container of vacuum of the travelling gear of semi-finished product, obtains the travelling gear of finished product；
(8) final acceptance inspection, checks the parameters of finished product travelling gear, it is qualified after can pack and put in storage.
Preferably, the step（5）Heat treatment in, control operation be 2. quenched to stand-by period that 5. operation be tempered≤
180min。
Preferably, the step（2）, step（4）After finishing, the table of the travelling gear with air gun cleaning semi-finished product is both needed to
Face.
Preferably, the step（5）1. the operation of heat treatment has four sub-steps during carburizing, and it is respectively
First samming step：, control 850-870 DEG C of furnace temperature, time 20min；
Step is oozed by force：850-870 DEG C of furnace temperature of control, time 70min, CP0.7；
Cooling step：Control furnace temperature is gradually reduced in the range of 820-840 DEG C, time 15min, CP0.6；
Secondary samming step：820-840 DEG C of furnace temperature of control, time 15min, CP0.6；
In four sub-steps, remain and be passed through 2.5-3.5Nl/min of ammonia；45-55ml/min of methyl alcohol；
2nd, in three, four sub-steps, remain and be passed through propane 5Nl/min；Equilibrium air 5Nl/min.
Preferably, the step（5）And step（6）Between be provided with following three sub-step,
Step（5.1）Inner bore grinding, is ground and controls endoporus error to the travelling gear endoporus of semi-finished product；
Step（5.2）By end face, part surplus is removed with grinding abrasive disk in the end face of the travelling gear of semi-finished product, to repair
Just it is being heat-treated the error of caused semi-finished product travelling gear；
Step（5.3）Vibrations grinding, semi-finished product driving cog is put in oscillating mill, adds grind stone, vibration
20-40 minutes；
The step（5.1）And step（5.2）In, the travelling gear of semi-finished product adds man-hour, is blown clean using air gun, plus
Antirust oil is put on case body special and gone up to work after finishing.
Compared with the gear that prior art is manufactured respectively using this technique, product test data of experiment is as shown in the table:
| The travelling gear that this technique makes | The travelling gear that existing process makes | |
| The start and stop life-span | More than 70,000 times | At 50,000 times or so |
| Loading sample （When being loaded into 1.2 times） | More than 300 hours | At 200 hours or so |
| It is real to play sample | More than 250 hours | At 200 hours or so |
Table 1
Above-described embodiment is only presently preferred embodiments of the present invention, is not limited the scope of the invention according to this, therefore：It is all according to
The equivalence changes that the structure of the present invention, shape, principle are done, all should be covered by within protection scope of the present invention.
Claims (4)
1. a kind of travelling gear manufacturing process based on powder metallurgy, it is characterised in that comprise the following steps：
(1) powder metallurgy iron based powders are uniformly mixed stand-by by raw material preparation with auxiliary material by proportioning；
(2) it is molded, the quantitative raw material powder for mixing is sent in press, the green compact of once die stamping forming travelling gear；
(3) sinter, the green compact of product are placed on mullite plate, and send into sintering 70min in sintering furnace, continue in sintering furnace
Appropriate nitrogen and hydrogen is passed through, wherein, sintering process parameter is as follows：
In the degreasing stage, duration 10min, sintering furnace temperature is 645-655 DEG C；
Warm-up phase, the sintering furnace temperature of duration 20min, front 10min is 745-755 DEG C, and the sintering furnace temperature of rear 10min is
845—855℃；
Holding stage, duration 30min, sintering furnace temperature is 1115-1125 DEG C；
Thermophase, duration 10min, sinter furnace temperature for 995-1005 DEG C；
(4) brush teeth, brush teeth is carried out using gear-brushing machine to the travelling gear of semi-finished product；
(5) it is heat-treated, the operation being heat-treated to the travelling gear of semi-finished product is as follows：
1. carburizing, Carburization Treatment is carried out using multipurpose furnace to the travelling gear of semi-finished product；
2. quench, the travelling gear of semi-finished product is quenched in oil-quenching tank, the oil temperature 110 in control oil-quenching tank-
Fluid in 130 DEG C, and stirring at low speed oil-quenching tank, the cool time is 30 minutes；
3. drain, the travelling gear of the semi-finished product after quenching is carried out in oil-quenching tank, drain the time 40 minutes；
4. clean, the unnecessary fluid on the travelling gear surface of semi-finished product is removed using cleaning machine；
5. be tempered, the travelling gear of the semi-finished product after cleaning be placed in tempering furnace and be tempered, temperature control 160-
180 DEG C, time control is in 120min；
6. hardness is examined eventually, checks whether at least 3 points of the flank of tooth, checking travelling gear case hardness meet standard；
7. metal lographic examination, removes metallographic tooth block or packs inherent quality problem to be checked with batch waste product；
(6) cleaning, the surface of the travelling gear of clean semi-finished product and backlash；
(7) vacuum oil immersion, by the oil immersion in the container of vacuum of the travelling gear of semi-finished product, obtains the travelling gear of finished product；
(8) final acceptance inspection, checks the parameters of finished product travelling gear, it is qualified after can pack and put in storage；
1. the operation of the step (5) heat treatment has four sub-steps during carburizing, and it is respectively
First samming step：850-870 DEG C of furnace temperature of control, time 20min；
Step is oozed by force：850-870 DEG C of furnace temperature of control, time 70min, CP 0.7；
Cooling step：Control furnace temperature is gradually reduced in the range of 820-840 DEG C, time 15min, CP 0.6；
Secondary samming step：820-840 DEG C of furnace temperature of control, time 15min, CP 0.6；
In four sub-steps, remain and be passed through 2.5-3.5Nl/min of ammonia；45-55ml/min of methyl alcohol；Second and third,
In four sub-steps, remain and be passed through propane 5Nl/min；Equilibrium air 5Nl/min.
2. a kind of travelling gear manufacturing process based on powder metallurgy according to claim 1, it is characterised in that the step
Suddenly in the heat treatment of (5), 2. control operation is quenched to stand-by period≤180min that 5. operation is tempered.
3. a kind of travelling gear manufacturing process based on powder metallurgy according to claim 1, it is characterised in that the step
Suddenly after (2), step (4) are finished, it is both needed to the surface of the travelling gear with air gun cleaning semi-finished product.
4. a kind of travelling gear manufacturing process based on powder metallurgy according to claim 1, it is characterised in that the step
Suddenly following three sub-step is provided between (5) and step (6),
Step (5.1) inner bore grinding, is ground and controls endoporus error to the travelling gear endoporus of semi-finished product；
Step (5.2) removes part surplus, to correct heat in the end face of the travelling gear of semi-finished product by end face with grinding abrasive disk
The error of semi-finished product travelling gear caused by processing；
Step (5.3) vibrations grinding, semi-finished product driving cog is put in oscillating mill, adds grind stone, vibration 20-40
Minute；
In the step (5.1) and step (5.2), the travelling gear of semi-finished product adds man-hour, is blown clean using air gun, processes
Antirust oil is put on case body special and goes up after finishing.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107366735A (en) * | 2017-08-04 | 2017-11-21 | 扬州海昌新材股份有限公司 | A kind of helical gear and preparation method thereof |
| CN110055543B (en) * | 2019-06-05 | 2021-08-06 | 浙江省浦江三联链条有限公司 | Chain production process |
| CN112157266A (en) * | 2020-09-30 | 2021-01-01 | 南通冠达粉末冶金有限公司 | Gear powder metallurgy sintering treatment process |
| CN113483076B (en) * | 2021-07-12 | 2022-11-25 | 扬州聚能金属制品科技有限公司 | One-time formed porous eccentric step spiral gear and machining process |
| CN114309822B (en) * | 2022-01-08 | 2023-06-20 | 浙江新昌汇盟机械有限公司 | Manufacturing method of arc bevel gear |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101474674A (en) * | 2009-01-16 | 2009-07-08 | 扬州保来得科技实业有限公司 | Powder metallurgy production method of internal helical gear |
| CN101671767A (en) * | 2009-10-16 | 2010-03-17 | 陆泽平 | Clutch gear quenching process |
| CN102000825A (en) * | 2009-09-02 | 2011-04-06 | 东睦新材料集团股份有限公司 | Method for manufacturing driving gear of motorcycle clutch |
| CN102672185A (en) * | 2012-06-07 | 2012-09-19 | 太仓市锦立得粉末冶金有限公司 | Process for manufacturing high-precision gear ring from powder metallurgy |
| CN102672183A (en) * | 2012-05-11 | 2012-09-19 | 马鞍山市华东粉末冶金厂 | Method for producing bevel gear with ratchet on end face through powder metallurgy warm forming |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003013111A (en) * | 2001-07-05 | 2003-01-15 | Aisin Seiki Co Ltd | Method of manufacturing toothed gear |
-
2014
- 2014-04-02 CN CN201410129782.9A patent/CN103978209B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101474674A (en) * | 2009-01-16 | 2009-07-08 | 扬州保来得科技实业有限公司 | Powder metallurgy production method of internal helical gear |
| CN102000825A (en) * | 2009-09-02 | 2011-04-06 | 东睦新材料集团股份有限公司 | Method for manufacturing driving gear of motorcycle clutch |
| CN101671767A (en) * | 2009-10-16 | 2010-03-17 | 陆泽平 | Clutch gear quenching process |
| CN102672183A (en) * | 2012-05-11 | 2012-09-19 | 马鞍山市华东粉末冶金厂 | Method for producing bevel gear with ratchet on end face through powder metallurgy warm forming |
| CN102672185A (en) * | 2012-06-07 | 2012-09-19 | 太仓市锦立得粉末冶金有限公司 | Process for manufacturing high-precision gear ring from powder metallurgy |
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Denomination of invention: Transmission gear manufacturing process based on powder metallurgy Effective date of registration: 20170713 Granted publication date: 20170503 Pledgee: China Merchants Bank, Limited by Share Ltd, Taizhou, Huangyan branch Pledgor: Zhejiang Fore Machinery & Electronic Co., Ltd. Registration number: 2017330000066 |
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Address after: Taizhou City, Zhejiang province 318025 town Huangyan District Court Gao Yang Cun Patentee after: Zhejiang Feng Li intelligent Polytron Technologies Inc Address before: Taizhou City, Zhejiang province 318025 town Huangyan District Court Gao Yang Cun Patentee before: Zhejiang Fore Machinery & Electronic Co., Ltd. |
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Date of cancellation: 20180521 Granted publication date: 20170503 Pledgee: China Merchants Bank, Limited by Share Ltd, Taizhou, Huangyan branch Pledgor: Zhejiang Fore Machinery & Electronic Co., Ltd. Registration number: 2017330000066 |