CN109722600A - A kind of powder metallurgy makes the forming method of automobile variable speed tooth case gear stand - Google Patents
A kind of powder metallurgy makes the forming method of automobile variable speed tooth case gear stand Download PDFInfo
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- CN109722600A CN109722600A CN201910124642.5A CN201910124642A CN109722600A CN 109722600 A CN109722600 A CN 109722600A CN 201910124642 A CN201910124642 A CN 201910124642A CN 109722600 A CN109722600 A CN 109722600A
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- tooth case
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Abstract
The invention discloses the forming methods that a kind of powder metallurgy makes automobile variable speed tooth case gear stand, including raw material mixing, compacting, drying, sintering, quenching, tempering, finishing, antirust treatment, the raw material by weight, including 100-120 parts of iron powder, 1.0-2.0 parts of graphene, 1.0-2.0 parts of nickel powder, 1.0-2.0 parts of manganese powder, 0.5-0.6 parts of lubricant, 0.1-0.2 parts of silane coupling agent, 3-4 parts of copper powder, 0.5-1.0 parts of chromium powder, 1.0-1.5 parts of zinc powder, 0.1-0.15 parts of silica, 1-2 parts of tungsten carbide, 0.5-1.0 parts of titanium valve.The advantages that the method for the invention composition of raw materials is reasonable, simple process, high production efficiency, and the automobile variable speed tooth case gear stand of the method for the invention preparation has global density uniform, and intensity, hardness are good, good antirust property.
Description
Technical field
The present invention relates to auto parts and components manufacture fields more particularly to a kind of powder metallurgy to make automobile variable speed tooth case gear branch
The forming method of frame.
Background technique
With the development of industry, higher and higher to the requirement of part, by the shadow of cost, delivery cycle and noise etc.
It rings, the part of machining is often difficult to meet the requirements.Powder metallurgy is the technology that can manufacture complex shape part, tool
There is the characteristics of saving raw material, energy conservation, saving of labor, is suitable for producing in enormous quantities.Since the gear stand of powder metallurgically manufacturing is compared
In the gear stand of founding, there are higher porositys, so that the intensity of gear stand, hardness, global density uniformity are all
It is affected to some extent.
Summary of the invention
It is described the purpose of the present invention is to provide the forming method that a kind of powder metallurgy makes automobile variable speed tooth case gear stand
Method composition of raw materials is reasonable, simple process, high production efficiency, the automobile variable speed tooth case gear branch of this law invention the method preparation
The advantages that frame has global density uniform, and intensity, hardness are good, good antirust property.
In order to achieve the above objectives, the technical solution of the present invention is as follows:
A kind of powder metallurgy makes the forming method of automobile variable speed tooth case gear stand, includes the following steps:
S1, raw material mixing: 100-120 parts of iron powder, 1.0-2.0 parts of graphene, 1.0-2.0 parts of nickel powder, manganese powder 1.0- are weighed
2.0 parts, 0.5-0.6 parts of lubricant, 0.1-0.2 parts of silane coupling agent, 3-4 parts of copper powder, 0.5-1.0 parts of chromium powder, zinc powder 1.0-1.5
Part, 0.1-0.15 parts of silica, 1-2 parts of tungsten carbide, 0.5-1.0 parts of titanium valve be added in high speed ball mill that carry out grinding mixed
Material, obtains uniformly mixed mixture；
S2, compacting: compacting tool set inner wall is infiltrated with powder metallurgy release agent, mixture obtained by S1 is then added to compacting
The blank that automobile variable speed tooth case gear stand is made is pressed in mold, the pressing pressure is 500-550MPa,
Hair pressed density is 6.8-7.3g/cm3；
S3, drying: the blank for the automobile variable speed tooth case gear stand that S2 is obtained is placed in vacuum desiccator temperature control 100
DEG C dry 2-3h；
S4, sintering: the blank of the automobile variable speed tooth case gear stand after S3 is dried, which is put into vacuum sintering furnace, to carry out
Automobile variable speed tooth case gear stand semi-finished product are made in vacuum-sintering, and the sintering vacuum degree is -0.08Mpa to -1.0MPa, sintering
Temperature is 1100 DEG C；
S5, quenching: semi-finished product obtained by S4 are quenched to obtain quenching part；
S6, tempering: quenching part obtained by S5 is obtained into tempering part into tempering；
S7, finishing: it will be cleaned and dried after S6 is obtained tempering part deburring finishing, obtain finishing part；
S8, antirust treatment: progress immersion oil handles to obtain finished product after the finishing part that S7 is obtained is carried out steam treatment.
Preferably, the lubricant in the S1 is EBS wax.
Preferably, the revolving speed of the S1 high speed ball mill is 400r/min, and the ground and mixed time is 2-3h.
Preferably, the sintering process of the S4 are as follows: be first warming up to 400-420 DEG C of pre-sintering 30-40min, heating rate 4-5
℃/min；800-820 DEG C of heat preservation sintering 30-40min, 15-16 DEG C of heating rate/min are then heated to, then is warming up to 1100 DEG C
Then heat preservation sintering 60-70min, 15-16 DEG C of heating rate/min cool the temperature to 600-620 DEG C of heat preservation 60-70min, cooling
15-16 DEG C of rate/min, then room temperature is cooled the temperature to, 15-20 DEG C of rate of temperature fall/min.
Preferably, the S5 quenching technical are as follows: be warming up to 900 DEG C of heat preservations 30-40min, heating rate 20- under argon gas protection
It 21 DEG C/min, then carries out oil quenching and obtains quenching part.
Preferably, the S6 tempering process are as follows: be warming up to after 200 DEG C of heat preservation 60-70min to be cooled to room temperature and be tempered
Part.
Preferably, steam treatment technique in institute S8 are as follows: heating then heats to 550 DEG C of guarantors in 350 DEG C of preheating 30-40min
Then warm 60-90min comes out of the stove air-cooled.
Preferably, immersion oil treatment temperature is 40-60 DEG C in the S8, and the immersion oil time is 1-2h.
The invention has the benefit that the method for the invention composition of raw materials is reasonable, simple process, high production efficiency, this
The automobile variable speed tooth case gear stand of invention the method preparation has global density uniform, and intensity, hardness are good, good antirust property
The advantages that.The present invention first carries out drying process before sintering, the air inside slug press part can be excluded, prevent rolled-up stock
It is cracked in sintering；The present invention uses gradient increased temperature cooling method in sintering, helps to improve the capability and performance of product；
The present invention increases quenching and tempering operation after sintering, helps to improve the performances such as the hardness and strength of product.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with specific embodiment, it is clear that described
Embodiment be only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiment of the present invention, this field
Those of ordinary skill's every other embodiment obtained, belongs to protection scope of the present invention.
Embodiment 1
A kind of powder metallurgy makes the forming method of automobile variable speed tooth case gear stand, includes the following steps:
S1, raw material mixing: 120 parts of iron powder, 2.0 parts of graphene, 2.0 parts of nickel powder, 2.0 parts of manganese powder, lubricant 0.8 are weighed
Part, 0.2 part of silane coupling agent, 4 parts of copper powder, 1.0 parts of chromium powder, 1.5 parts of zinc powder, 0.15 part of silica, 2 parts of tungsten carbide, titanium valve
1.0 parts are added in high speed ball mill and carry out grinding mixing, obtain uniformly mixed mixture；
S2, compacting: compacting tool set inner wall is infiltrated with powder metallurgy release agent, mixture obtained by S1 is then added to compacting
It is pressed in mold, the blank of automobile variable speed tooth case gear stand is made；The pressing pressure is 500-550MPa,
Blank pressed density is 6.8-7.3g/cm3；
S3, drying: the blank for the automobile variable speed tooth case gear stand that S2 is obtained is placed in vacuum desiccator temperature control 100
DEG C dry 2-3h；
S4, sintering: the blank of the automobile variable speed tooth case gear stand after S3 is dried, which is put into vacuum sintering furnace, to carry out
Vacuum-sintering, control vacuum degree are first warming up to 400-420 DEG C of pre-sintering 30-40min, heating speed in -0.08Mpa to -1.0MPa
4-5 DEG C of rate/min；800-820 DEG C of heat preservation sintering 30-40min, 15-16 DEG C of heating rate/min are then heated to, then is warming up to
Then 1100 DEG C of heat preservation sintering 60-70min, 15-16 DEG C of heating rate/min cool the temperature to 600-620 DEG C of heat preservation 60-
70min, 15-16 DEG C of rate of temperature fall/min, then room temperature is cooled the temperature to, 15-20 DEG C of rate of temperature fall/min obtains automobile variable speed tooth
Case gear stand semi-finished product.
S5, quenching: semi-finished product obtained by S4 being placed in heat-treatment furnace and are warming up to 900 DEG C, 20-21 DEG C of heating rate/min,
It is protected in heat-treatment furnace full of argon gas, keeps the temperature 30-40min, then carried out oil quenching and obtain quenching part；
S6, tempering: quenching part obtained by S5 is placed in heat-treatment furnace after being warming up to 200 DEG C of heat preservation 60-70min and is cooled to room
Temperature obtains tempering part；
S7, finishing: it will be cleaned and dried after obtained tempering part deburring finishing, obtain finishing part；
S8, antirust treatment: the finishing part that S7 is obtained being sent into steam oven and carries out steam treatment, is first heated up pre- at 350 DEG C
Hot 30-40min then heats to 550 DEG C, keeps the temperature 60-90min, wherein the steam pressure being passed through in furnace is maintained at 2-5N/
cm2, come out of the stove after heat preservation air-cooled, be cooled to immersion oil processing 1-2h in the hot oil for immerse after room temperature 40-60 DEG C, obtain finished product.
Wherein, the lubricant in S1 is EBS wax, and the powder metallurgy release agent in S2 is stearic acid.
Embodiment 2
A kind of powder metallurgy makes the forming method of automobile variable speed tooth case gear stand, includes the following steps:
S1, raw material mixing: 100 parts of iron powder, 1.0 parts of graphene, 1.0 parts of nickel powder, 1.0 parts of manganese powder, lubricant 0.6 are weighed
Part, 0.1 part of silane coupling agent, 3 parts of copper powder, 0.5 part of chromium powder, 1.0 parts of zinc powder, 0.1 part of silica, 1 part of tungsten carbide, titanium valve
0.5 part is added in high speed ball mill and carries out grinding mixing, obtains uniformly mixed mixture；
S2, compacting: compacting tool set inner wall is infiltrated with powder metallurgy release agent, mixture obtained by S1 is then added to compacting
It is pressed in mold, the blank of automobile variable speed tooth case gear stand is made；The pressing pressure is 500-550MPa,
Blank pressed density is 6.8-7.3g/cm3；
S3, drying: the blank for the automobile variable speed tooth case gear stand that S2 is obtained is placed in vacuum desiccator temperature control 100
DEG C dry 2-3h；
S4, sintering: the blank of the automobile variable speed tooth case gear stand after S3 is dried, which is put into vacuum sintering furnace, to carry out
Vacuum-sintering, control vacuum degree are first warming up to 400-420 DEG C of pre-sintering 30-40min, heating speed in -0.08Mpa to -1.0MPa
4-5 DEG C of rate/min；800-820 DEG C of heat preservation sintering 30-40min, 15-16 DEG C of heating rate/min are then heated to, then is warming up to
Then 1100 DEG C of heat preservation sintering 60-70min, 15-16 DEG C of heating rate/min cool the temperature to 600-620 DEG C of heat preservation 60-
70min, 15-16 DEG C of rate of temperature fall/min, then room temperature is cooled the temperature to, 15-20 DEG C of rate of temperature fall/min obtains automobile variable speed tooth
Case gear stand semi-finished product.
S5, quenching: semi-finished product obtained by S4 being placed in heat-treatment furnace and are warming up to 900 DEG C, 20-21 DEG C of heating rate/min,
It is protected in heat-treatment furnace full of argon gas, keeps the temperature 30-40min, then carried out oil quenching and obtain quenching part；
S6, tempering: quenching part obtained by S5 is placed in heat-treatment furnace after being warming up to 200 DEG C of heat preservation 60-70min and is cooled to room
Temperature obtains tempering part；
S7, finishing: it will be cleaned and dried after obtained tempering part deburring finishing, obtain finishing part；
S8, antirust treatment: the finishing part that S7 is obtained being sent into steam oven and carries out steam treatment, is first heated up pre- at 350 DEG C
Hot 30-40min then heats to 550 DEG C, keeps the temperature 60-90min, wherein the steam pressure being passed through in furnace is maintained at 2-5N/
cm2, come out of the stove after heat preservation air-cooled, be cooled to immersion oil processing 1-2h in the hot oil for immerse after room temperature 40-60 DEG C, obtain finished product.
Wherein, the lubricant in S1 is EBS wax, and the powder metallurgy release agent in S2 is stearic acid.
Automobile variable speed tooth case gear stand made from embodiment 1 and embodiment 2 is tested for the property, the results show that close
Degree is not less than 7.3g/cm3, Rockwell hardness is greater than 75HRC, and Tensile strength is greater than 1280MPa, and radial torsion strength is greater than
9400N, basic relative displacement degree are not more than 0.1mm.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, all any modification, equivalent substitution, improvement and etc. be should all be included in the protection scope of the present invention.
Claims (8)
1. the forming method that a kind of powder metallurgy makes automobile variable speed tooth case gear stand, which comprises the steps of:
S1, raw material mixing: 100-120 parts of iron powder, 1.0-2.0 parts of graphene, 1.0-2.0 parts of nickel powder, manganese powder 1.0-2.0 are weighed
Part, 0.5-0.6 parts of lubricant, 0.1-0.2 parts of silane coupling agent, 3-4 parts of copper powder, 0.5-1.0 parts of chromium powder, 1.0-1.5 parts of zinc powder,
0.1-0.15 parts of silica, 1-2 parts of tungsten carbide, 0.5-1.0 parts of titanium valve be added in high speed ball mill and carry out grinding mixing, obtain
To uniformly mixed mixture；
S2, compacting: compacting tool set inner wall is infiltrated with powder metallurgy release agent, mixture obtained by S1 is then added to compacting tool set
In be pressed the blank that automobile variable speed tooth case gear stand is made, the pressing pressure is 500-550MPa, hair pressure
Density processed is 6.8-7.3g/cm3；
S3, drying: the blank for the automobile variable speed tooth case gear stand that S2 is obtained is placed in vacuum desiccator 100 DEG C of temperature control and is done
Dry 2-3h；
S4, sintering: the blank of the automobile variable speed tooth case gear stand after S3 is dried, which is put into vacuum sintering furnace, carries out vacuum
Automobile variable speed tooth case gear stand semi-finished product are made in sintering, and the sintering vacuum degree is -0.08Mpa to -1.0MPa, sintering temperature
It is 1100 DEG C；
S5, quenching: semi-finished product obtained by S4 are quenched to obtain quenching part；
S6, tempering: quenching part obtained by S5 is obtained into tempering part into tempering；
S7, finishing: it will be cleaned and dried after S6 is obtained tempering part deburring finishing, obtain finishing part；
S8, antirust treatment: progress immersion oil handles to obtain finished product after the finishing part that S7 is obtained is carried out steam treatment.
2. the forming method that powder metallurgy as described in claim 1 makes automobile variable speed tooth case gear stand, which is characterized in that institute
Stating the lubricant in S1 is EBS wax.
3. special as the described in any item powder metallurgy of claim 1 to 2 make the forming method of automobile variable speed tooth case gear stand
Sign is that the revolving speed of the S1 high speed ball mill is 400r/min, and the ground and mixed time is 2-3h.
4. special as the described in any item powder metallurgy of claim 1 to 2 make the forming method of automobile variable speed tooth case gear stand
Sign is, the sintering process of the S4 are as follows: be first warming up to 400-420 DEG C of pre-sintering 30-40min, 4-5 DEG C of heating rate/min；
800-820 DEG C of heat preservation sintering 30-40min, 15-16 DEG C of heating rate/min are then heated to, then is warming up to 1100 DEG C of heat preservations and burns
60-70min is tied, then 15-16 DEG C of heating rate/min cools the temperature to 600-620 DEG C of heat preservation 60-70min, rate of temperature fall
15-16 DEG C/min, then room temperature is cooled the temperature to, 15-20 DEG C of rate of temperature fall/min.
5. the forming method that powder metallurgy as claimed in claim 4 makes automobile variable speed tooth case gear stand, which is characterized in that institute
State S5 quenching technical are as follows: be warming up to 900 DEG C of heat preservation 30-40min under argon gas protection, then 20-21 DEG C of heating rate/min carries out
Oil quenching obtains quenching part.
6. as the described in any item powder metallurgy of claim 5 make the forming method of automobile variable speed tooth case gear stand, feature
It is, the S6 tempering process are as follows: be cooled to room temperature to obtain tempering part after being warming up to 200 DEG C of heat preservation 60-70min.
7. the forming method that powder metallurgy as claimed in claim 6 makes automobile variable speed tooth case gear stand, which is characterized in that institute
Steam treatment technique in S8 are as follows: heating then heats to 550 DEG C of heat preservation 60-90min, then go out in 350 DEG C of preheating 30-40min
Furnace is air-cooled.
8. the forming method that powder metallurgy as claimed in claim 7 makes automobile variable speed tooth case gear stand, which is characterized in that institute
Stating immersion oil treatment temperature in S8 is 40-60 DEG C, and the immersion oil time is 1-2h.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910124642.5A CN109722600A (en) | 2019-02-19 | 2019-02-19 | A kind of powder metallurgy makes the forming method of automobile variable speed tooth case gear stand |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910124642.5A CN109722600A (en) | 2019-02-19 | 2019-02-19 | A kind of powder metallurgy makes the forming method of automobile variable speed tooth case gear stand |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111468715A (en) * | 2020-06-03 | 2020-07-31 | 荆州九菱科技股份有限公司 | Production process for preparing powder metallurgy driving gear and preparation device thereof |
| CN112460247A (en) * | 2020-11-26 | 2021-03-09 | 江苏智造新材有限公司 | Planetary carrier of automatic transmission of automobile and preparation method thereof |
| CN113118441A (en) * | 2019-12-30 | 2021-07-16 | 吉凯恩粉末冶金(仪征)有限公司 | High-performance automobile part powder metallurgy part and preparation method thereof |
| CN114939664A (en) * | 2022-05-26 | 2022-08-26 | 南通新思迪机电有限公司 | High-strength wear-resistant gear machining process |
| CN115305418A (en) * | 2022-06-30 | 2022-11-08 | 南通市中吕齿轮有限公司 | High-strength gear and machining process thereof |
| CN115961214A (en) * | 2022-12-29 | 2023-04-14 | 绵阳市天铭机械有限公司 | Preparation process of pawl limiting plate |
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2019
- 2019-02-19 CN CN201910124642.5A patent/CN109722600A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113118441A (en) * | 2019-12-30 | 2021-07-16 | 吉凯恩粉末冶金(仪征)有限公司 | High-performance automobile part powder metallurgy part and preparation method thereof |
| CN111468715A (en) * | 2020-06-03 | 2020-07-31 | 荆州九菱科技股份有限公司 | Production process for preparing powder metallurgy driving gear and preparation device thereof |
| CN111468715B (en) * | 2020-06-03 | 2022-02-15 | 荆州九菱科技股份有限公司 | Production process for preparing powder metallurgy driving gear and preparation device thereof |
| CN112460247A (en) * | 2020-11-26 | 2021-03-09 | 江苏智造新材有限公司 | Planetary carrier of automatic transmission of automobile and preparation method thereof |
| CN114939664A (en) * | 2022-05-26 | 2022-08-26 | 南通新思迪机电有限公司 | High-strength wear-resistant gear machining process |
| CN115305418A (en) * | 2022-06-30 | 2022-11-08 | 南通市中吕齿轮有限公司 | High-strength gear and machining process thereof |
| CN115961214A (en) * | 2022-12-29 | 2023-04-14 | 绵阳市天铭机械有限公司 | Preparation process of pawl limiting plate |
| CN115961214B (en) * | 2022-12-29 | 2024-07-16 | 绵阳市天铭机械有限公司 | Preparation process of pawl limiting plate |
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Application publication date: 20190507 |