CN105921740A - Powder metallurgy gear and processing technology thereof - Google Patents
Powder metallurgy gear and processing technology thereof Download PDFInfo
- Publication number
- CN105921740A CN105921740A CN201610477330.9A CN201610477330A CN105921740A CN 105921740 A CN105921740 A CN 105921740A CN 201610477330 A CN201610477330 A CN 201610477330A CN 105921740 A CN105921740 A CN 105921740A
- Authority
- CN
- China
- Prior art keywords
- powder metallurgical
- metallurgical gear
- gear
- powder
- carbon
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012545 processing Methods 0.000 title abstract description 16
- 238000005516 engineering process Methods 0.000 title abstract description 7
- 238000004663 powder metallurgy Methods 0.000 title abstract description 6
- 239000000843 powder Substances 0.000 claims abstract description 78
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 19
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims abstract description 19
- 238000007493 shaping process Methods 0.000 claims abstract description 18
- 238000005245 sintering Methods 0.000 claims abstract description 15
- 238000003672 processing method Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 35
- 230000008569 process Effects 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 5
- 230000003064 anti-oxidating effect Effects 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 238000007747 plating Methods 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 239000011701 zinc Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000003754 machining Methods 0.000 abstract description 2
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- 239000000428 dust Substances 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000010862 gear shaping Methods 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
-
- B22F1/0003—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/08—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of toothed articles, e.g. gear wheels; of cam discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
Abstract
The invention discloses a powder metallurgy gear and a processing technology thereof, which solve the problems of energy waste, low production efficiency and the like caused by various powder metallurgy gear processing steps, and have the technical scheme points that the powder metallurgy gear comprises the following components in percentage by weight: 95 to 99 percent of iron, 0.4 to 2 percent of carbon, 0.4 to 2 percent of zinc stearate, and 0.1 to 2 percent of yellow powder; a processing method comprises the following steps of portioning, pressing, sintering, shaping, finish machining and surface treating. The powder metallurgy gear and the processing technology thereof provided by the invention are simplified in processing steps, high in energy utilization ratio and high in production efficiency.
Description
Technical field
The present invention relates to a kind of metallurgical technology, particularly relate to a kind of powder metallurgical gear and processing technique thereof.
Background technology
At present, the most of Gear Processing of China the most all uses the technique that steel are processed.Need heat treatment quenching and tempering, numerically controlled lathe finish turning, corase grind non-referenced face, thick hobbing machine, essence gear shaping wheel, shaving, line cutting, deburring, heat treatment nitrogenize, by face grinding, refine two planes, fine cylindrical, gear honing, flank profil chamfering R0.1；Clean up the operations such as antirust.Long processing time, process equipment is many, and logistics turnover is slow, the feature of the waste energy.Powder metallurgy is to produce metal dust or with metal dust (or mixture of metal dust and non-metal powder) as raw material, through shaping and sintering, produces metal material, composite and the industrial technology of all kinds goods.At present, PM technique has been widely used in the fields such as traffic, machinery, electronics, Aero-Space, weapons, biology, new forms of energy, information and nuclear industry, becomes one of branch of most development vitality in new material science.PM technique possesses the series of advantages such as the most energy-conservation, province's material, excellent performance, Product Precision height and good stability, is very suitable for producing in enormous quantities.It addition, the material that cannot prepare of part conventional casting methods and machining process and complex parts also can use PM technique manufacture, thus enjoy the attention of industrial quarters.
Gear drive is a kind of machine driving most widely used in modern mechanical product, this is because it is ensured that constant gear ratio, have the advantages such as transmission power scope is big, efficiency is high, life-span length.The gear using metallurgical technology manufacture can ensure that the concordance of gear morpheme and dimensional tolerance, but owing to the working environment of gear is complicated, its performance has been had higher requirement.Authorization Notice No. is that the patent of CN 103691958 B discloses a kind of powder metallurgical gear processing technique, including the preparation of powder metallurgical gear material powder, compressing, sintering, heat treatment, fine grinding endoporus, mill counterbore, face grinding, fine cylindrical, gear honing, fine grinding two plane, polish, put into Special station tool 90-2/CB-G**, clean up with kerosene in homemade cleaning case, coat antirust low for 12 procedures such as finished product, the various waste that result in the energy of processing step and production efficiency of antirust oil.
Summary of the invention
The deficiency existed for prior art, it is an object of the invention to provide a kind of powder metallurgical gear and processing technique thereof, and processing step is simplified, and energy utilization rate is high, and production efficiency is high.
For achieving the above object, the technical scheme is that a kind of powder metallurgical gear, each component (wt%) that described powder metallurgical gear forms as following weight percent: ferrum 95-99, carbon 0.4-2, zinc stearate 0.4-2, bloom 0.1-2.
Further, the preferred below scheme of the present invention:
One, each component (wt%) that powder metallurgical gear forms as following weight percent: ferrum 98.4, carbon 0.7, zinc stearate 0.6, bloom 0.3.
Two, each component (wt%) that powder metallurgical gear forms as following weight percent: ferrum 98.7, carbon 0.8, zinc stearate 0.3, bloom 0.2.
Three, each component (wt%) that powder metallurgical gear forms as following weight percent: ferrum 99, carbon 0.5, zinc stearate 0.4, bloom 0.1.
The processing method of powder metallurgical gear of the present invention is as follows:
(1) joining part: carry out breading in ferrum, carbon, zinc stearate and bloom are thrown in batch mixer according to certain proportioning, mixing time was at 0.5-1.5 hour；
(2) compacting: take the powder after joining part and put into press, is pressed into required gear shape with 80T-120T pressure by powder, compressing obtains blank；
(3) sintering: blank is put into meshbeltfurnace and is sintered obtaining powder metallurgical gear, guipure speed 600-800r/min；
(4) shaping: the powder metallurgical gear after sintering is carried out shaping by press, makes described powder metallurgical gear reach the margin of tolerance of requirement；
(5) polish: the powder metallurgical gear after shaping is carried out chamfered and deburring processes；
(6) surface processes: the powder metallurgical gear after polish is carried out plating zinc on surface process, makes the surface of powder metallurgical gear form antioxidation coating.
In the present invention, iron powder is the wearability that the main component of gear ring, carbon dust and bloom both contribute to increase powder metallurgical gear, and zinc stearate has the effect strengthening electric conductivity, more preferable signal can be had to export；The powder metallurgical gear being made up of above component has stronger wearability and electric conductivity, it is possible to preferably adapt to complex environment；Above four kinds of components are prepared according to a certain ratio, breading is carried out in the powder prepared is thrown in batch mixer, the powder that batch mixing is good is put into the compressing blank that obtains the most again in press blank is put into meshbeltfurnace be sintered a period of time and obtain powder metallurgical gear, again after the operations such as shaping, polish and surface process, the processing technique of powder metallurgical gear completes；Whole processing technique 6 procedure completes, and step is simplified, and every procedure is high to the utilization rate of resource, does not wastes, and production efficiency is high.
The present invention is further arranged to: the time that blank is sintered in meshbeltfurnace is 2-3 hour.
Blahk structure intensity after compressing is the highest, needs, through sintering a period of time in meshbeltfurnace, to be typically advisable with 2-3 hour, and the structural strength of the powder metallurgical gear after sintering is greatly enhanced, and service life is long.
The present invention has an advantage that, by above-mentioned powder metallurgical gear and processing method thereof, processing step is simplified, and energy utilization rate is high, and production efficiency is high.
Detailed description of the invention
Embodiment one: powder metallurgical gear is made up of ferrum, carbon, zinc stearate and bloom, the percentage by weight (wt%) of the most above-mentioned each component is: ferrum 98.4, carbon 0.7, zinc stearate 0.6, bloom 0.3.
In the present embodiment, the processing method of described powder metallurgical gear, the method comprises the following steps:
(1) joining part: carry out breading in ferrum, carbon, zinc stearate and bloom are thrown in batch mixer according to above proportioning, mixing time was at 0.5 hour；
(2) compacting: take the powder after joining part and put into press, is pressed into required gear shape with 80T pressure by powder, compressing obtains blank；
(3) sintering: blank is put into meshbeltfurnace and is sintered obtaining powder metallurgical gear, guipure speed 600r/min；
(4) shaping: the powder metallurgical gear after sintering is carried out shaping by press, makes described powder metallurgical gear reach the margin of tolerance of requirement；
(5) polish: the powder metallurgical gear after shaping is carried out chamfered and deburring processes；
(6) surface processes: the powder metallurgical gear after polish is carried out plating zinc on surface process, makes the surface of powder metallurgical gear form antioxidation coating.
Embodiment two: be changed on the basis of embodiment one, changes as follows: each component (wt%) that powder metallurgical gear forms as following weight percent: ferrum 98.7, carbon 0.8, zinc stearate 0.3, bloom 0.2.
In the present embodiment, the processing method of described powder metallurgical gear, the method comprises the following steps:
(1) joining part: carry out breading in ferrum, carbon, zinc stearate and bloom are thrown in batch mixer according to certain proportioning, mixing time was at 1 hour；
(2) compacting: take the powder after joining part and put into press, is pressed into required gear shape with 100T pressure by powder, compressing obtains blank；
(3) sintering: blank is put into meshbeltfurnace and is sintered obtaining powder metallurgical gear, guipure speed 700r/min；
(4) shaping: the powder metallurgical gear after sintering is carried out shaping by press, makes described powder metallurgical gear reach the margin of tolerance of requirement；
(5) polish: the powder metallurgical gear after shaping is carried out chamfered and deburring processes；
(6) surface processes: the powder metallurgical gear after polish is carried out plating zinc on surface process, makes the surface of powder metallurgical gear form antioxidation coating.
Embodiment three: be changed on the basis of embodiment one, changes as follows: each component (wt%) that powder metallurgical gear forms as following weight percent: ferrum 99, carbon 0.5, zinc stearate 0.4, bloom 0.1.
In the present embodiment, the processing method of described powder metallurgical gear, the method comprises the following steps:
(1) joining part: carry out breading in ferrum, carbon, zinc stearate and bloom are thrown in batch mixer according to certain proportioning, mixing time was at 1.5 hours；
(2) compacting: take the powder after joining part and put into press, is pressed into required gear shape with 120T pressure by powder, compressing obtains blank；
(3) sintering: blank is put into meshbeltfurnace and is sintered obtaining powder metallurgical gear, guipure speed 800r/min；
(4) shaping: the powder metallurgical gear after sintering is carried out shaping by press, makes described powder metallurgical gear reach the margin of tolerance of requirement；
(5) polish: the powder metallurgical gear after shaping is carried out chamfered and deburring processes；
(6) surface processes: the powder metallurgical gear after polish is carried out plating zinc on surface process, makes the surface of powder metallurgical gear form antioxidation coating.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-described embodiment, and all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that, for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (6)
1. a powder metallurgical gear, it is characterised in that: each component (wt%) that described powder metallurgical gear forms as following weight percent: ferrum 95-99, carbon 0.4-2, zinc stearate 0.4-2, bloom 0.1-2.
A kind of powder metallurgical gear the most according to claim 1, it is characterised in that: each component (wt%) that powder metallurgical gear forms as following weight percent: ferrum 98.4, carbon 0.7, zinc stearate 0.6, bloom 0.3.
A kind of powder metallurgical gear the most according to claim 1, it is characterised in that: each component (wt%) that powder metallurgical gear forms as following weight percent: ferrum 98.7, carbon 0.8, zinc stearate 0.3, bloom 0.2.
A kind of powder metallurgical gear the most according to claim 1, it is characterised in that: each component (wt%) that powder metallurgical gear forms as following weight percent: ferrum 99, carbon 0.5, zinc stearate 0.4, bloom 0.1.
5. according to the processing method of the powder metallurgical gear described in claim 1-4 any one, it is characterised in that: the method comprises the following steps:
(1) joining part: carry out breading in ferrum, carbon, zinc stearate and bloom are thrown in batch mixer according to certain proportioning, mixing time was at 0.5-1.5 hour；
(2) compacting: take the powder after joining part and put into press, is pressed into required gear shape with 80T-120T pressure by powder, compressing obtains blank；
(3) sintering: blank is put into meshbeltfurnace and is sintered obtaining powder metallurgical gear, guipure speed 600-800r/min；
(4) shaping: the powder metallurgical gear after sintering is carried out shaping by press, makes described powder metallurgical gear reach the margin of tolerance of requirement；
(5) polish: the powder metallurgical gear after shaping is carried out chamfered and deburring processes；
(6) surface processes: the powder metallurgical gear after polish is carried out plating zinc on surface process, makes the surface of powder metallurgical gear form antioxidation coating.
The processing method of a kind of powder metallurgical gear the most according to claim 5, it is characterised in that: the time that blank is sintered in meshbeltfurnace is 2-3 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610477330.9A CN105921740A (en) | 2016-06-27 | 2016-06-27 | Powder metallurgy gear and processing technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610477330.9A CN105921740A (en) | 2016-06-27 | 2016-06-27 | Powder metallurgy gear and processing technology thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105921740A true CN105921740A (en) | 2016-09-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610477330.9A Pending CN105921740A (en) | 2016-06-27 | 2016-06-27 | Powder metallurgy gear and processing technology thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105921740A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194325A (en) * | 2017-12-28 | 2018-06-22 | 芜湖欧宝机电有限公司 | The manufacturing method of high-efficient low-noise piston compressor valve plate |
| CN111673400A (en) * | 2020-06-18 | 2020-09-18 | 苏州伊泰克汽配科技有限公司 | Machining process of automobile seat adjuster gear |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0483809A (en) * | 1990-07-24 | 1992-03-17 | Kawasaki Heavy Ind Ltd | Compound gear and manufacture thereof |
| US20090035169A1 (en) * | 2007-08-03 | 2009-02-05 | Honda Motor Co., Ltd. | Dual metal torque transmitting apparatuses and methods for making the same |
| CN101502879A (en) * | 2009-01-16 | 2009-08-12 | 马鞍山市华东粉末冶金厂 | Method for producing small modulus duplicate gear from powder metallurgy |
| CN102380615A (en) * | 2011-10-16 | 2012-03-21 | 枣庄市润源粉末冶金有限公司 | Powder metallurgy start chainwheel and gear |
| CN102672165A (en) * | 2012-06-07 | 2012-09-19 | 太仓市锦立得粉末冶金有限公司 | Powder metallurgy process |
| CN102990068A (en) * | 2012-11-22 | 2013-03-27 | 宁波市群星粉末冶金有限公司 | Powder metallurgy gear |
| CN103846439A (en) * | 2012-12-03 | 2014-06-11 | 重庆聚能粉末冶金有限公司 | Manufacturing method for gear of motorcycle cooling pump |
| CN103846444A (en) * | 2012-12-03 | 2014-06-11 | 重庆聚能粉末冶金有限公司 | Manufacturing method of motorcycle engine oil pump gear |
-
2016
- 2016-06-27 CN CN201610477330.9A patent/CN105921740A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0483809A (en) * | 1990-07-24 | 1992-03-17 | Kawasaki Heavy Ind Ltd | Compound gear and manufacture thereof |
| US20090035169A1 (en) * | 2007-08-03 | 2009-02-05 | Honda Motor Co., Ltd. | Dual metal torque transmitting apparatuses and methods for making the same |
| CN101502879A (en) * | 2009-01-16 | 2009-08-12 | 马鞍山市华东粉末冶金厂 | Method for producing small modulus duplicate gear from powder metallurgy |
| CN102380615A (en) * | 2011-10-16 | 2012-03-21 | 枣庄市润源粉末冶金有限公司 | Powder metallurgy start chainwheel and gear |
| CN102672165A (en) * | 2012-06-07 | 2012-09-19 | 太仓市锦立得粉末冶金有限公司 | Powder metallurgy process |
| CN102990068A (en) * | 2012-11-22 | 2013-03-27 | 宁波市群星粉末冶金有限公司 | Powder metallurgy gear |
| CN103846439A (en) * | 2012-12-03 | 2014-06-11 | 重庆聚能粉末冶金有限公司 | Manufacturing method for gear of motorcycle cooling pump |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108194325A (en) * | 2017-12-28 | 2018-06-22 | 芜湖欧宝机电有限公司 | The manufacturing method of high-efficient low-noise piston compressor valve plate |
| CN108194325B (en) * | 2017-12-28 | 2019-11-26 | 芜湖欧宝机电有限公司 | The manufacturing method of high-efficient low-noise piston compressor valve plate |
| CN111673400A (en) * | 2020-06-18 | 2020-09-18 | 苏州伊泰克汽配科技有限公司 | Machining process of automobile seat adjuster gear |
| CN111673400B (en) * | 2020-06-18 | 2022-04-01 | 苏州伊泰克汽配科技有限公司 | Machining process of automobile seat adjuster gear |
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Application publication date: 20160907 |