CN102756123B - Automobile clutch gear with sintered copper, aluminum and steel based on powder metallurgy technology and manufacturing method of automobile clutch gear - Google Patents

Automobile clutch gear with sintered copper, aluminum and steel based on powder metallurgy technology and manufacturing method of automobile clutch gear Download PDF

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Publication number
CN102756123B
CN102756123B CN201210208549.0A CN201210208549A CN102756123B CN 102756123 B CN102756123 B CN 102756123B CN 201210208549 A CN201210208549 A CN 201210208549A CN 102756123 B CN102756123 B CN 102756123B
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powder
clutch gear
steel
microns
automobile clutch
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CN102756123A (en
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许道生
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HUBEI HEFENG CLUTCHES CO Ltd
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HUBEI HEFENG CLUTCHES CO Ltd
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Abstract

The invention discloses an automobile transmission gear with sintered copper, aluminum and steel based on a powder metallurgy technology and a manufacturing method of the automobile transmission gear. The automobile transmission gear takes electrolytic iron powder as a base material and also comprises the following components in weight percentage: 20%-30% of waste steel powder, 1.2%-1.8% of copper powder, 1.2%-1.5% of manganese sulfide powder, 2%-3% of waste aluminum powder, 0.2%-0.6% of molybdenum disulfide, 1.2%-1.5% of chromium powder, 0.8%-1.2% of graphite, 1.2%-1.6% of micrometer acrawax with the size being less than 45 microns and 1.5%-1.8% of stearic acid with the size being less than 45 microns. According to the invention, the waste steel powder, the waste aluminum powder and alloy materials thereof are combined, a sintering process is adopted, and the characteristics of stable performance and few uncontrollable impurity elements of the smelted waste steel powder, thus being good for improving the performance stability of a powder metallurgy product; secondly, the clutch gear has the advantages of high equal division precision, good wear resistance and excellent gear face hardness and pressure resistance, and can meet factory requirements; and meanwhile, a production process is greatly simplified and can meet the requirements on large-bath rapid production and material supply.

Description

A kind of automobile clutch gear based on PM technique sintered copper aluminum steel and preparation method thereof
Technical field
The present invention relates to powder metallurgy and make auto parts and components, be specifically related to a kind of automobile clutch gear based on PM technique sintered copper aluminum steel and preparation method thereof.
Background technology
Existing automobile clutch gear mainly adopts the materials such as 45 steel, 40Cr, 40CrNi to make; tooth face hardness HB > 350; technical process: cut → height of rough forging → normalizing → rough lumber → modified → essence, mid frequency induction hardening → lonneal → gear honing or grinding agent running-in, electrospark running-in etc.; the gear of producing wears no resistance; finished surface poor dimensional precision; technique is also more complicated, is difficult to adapt to the needs that large finger amount is produced fast.
Summary of the invention
The object of the present invention is to provide a kind of automobile clutch gear based on PM technique sintered copper aluminum steel and preparation method thereof.The clutch gear halving precision that the present invention produces is high, and wearability is good, and tooth face hardness, compressive resistance are all good, can meet producer's needs, and production technology is simplified greatly simultaneously, adapts to the supply of material requirement of producing fast in enormous quantities.
The present invention adopts following technical scheme to achieve these goals:
Automobile clutch gear based on PM technique sintered copper aluminum steel, it is characterized in that: take electrolytic iron powder as matrix, the weight percentage of all the other components is: steel scrap powder 20-30, copper powder 1.2-1.8, sulfuration manganese powder 1.2-1.5, aluminium scrap powder 2-3, molybdenum bisuphide 0.2-0.6, chromium powder 1.2-1.5, graphite 0.8-1.2, be less than 45 microns of Acrawax 1.2-1.6, be less than 45 microns of stearic acid 1.5-1.8.
The described automobile clutch gear based on PM technique sintered copper aluminum steel, it is characterized in that: take electrolytic iron powder as matrix, the weight percentage of all the other components is: steel scrap powder 25, copper powder 1.5, sulfuration manganese powder 1.4, aluminium scrap powder 2.5, molybdenum bisuphide 0.4, chromium powder 1.3, graphite 1, be less than 45 microns of Acrawaxs 1.4, be less than 45 microns of stearic acid 1.7.
The preparation method of the described automobile clutch gear based on PM technique sintered copper aluminum steel, is characterized in that comprising the following steps:
(1) by the weight portion of constitutive material, take each raw material, be crushed to 300-400 order, mix, then pack mould into, be placed on press, pressure 7.5T/CM 2condition under, compressing;
(2) pressed compact after compressing is positioned over and in meshbeltfurnace, carries out successively multi-steps sintering, temperature 600-650 ℃, sintering 30-40 minute; Temperature 800-850 ℃, sintering 60-90 minute; Temperature temperature is controlled at 1200-1250 ℃, sintering 90-120 minute; Then be incubated 30 minutes at Quenching Treatment: 650-685 ℃, continue to be warming up to 900-920 ℃ of insulation 2 hours; At tempering: 370-420 ℃, be incubated 1 hour, cooling, nitriding processing, fine finishining, get product.
Advantage of the present invention:
The present invention, in conjunction with steel scrap powder, aluminium scrap powder and alloy material thereof, by sintering process, has utilized the stable performance after smelting of steel scrap powder, and the feature that uncontrollable impurity element is few, is conducive to powder metallurgy product stability and improves; Secondly, the clutch gear halving precision that the present invention produces is high, and wearability is good, and tooth face hardness, compressive resistance are all good, can meet producer's needs, and production technology is simplified greatly simultaneously, adapts to the supply of material requirement of producing fast in enormous quantities.
The specific embodiment
Embodiment 1: the automobile clutch gear based on PM technique sintered copper aluminum steel, take electrolytic iron powder as matrix, and the weight percentage of all the other components is: steel scrap powder 25, copper powder 1.5, sulfuration manganese powder 1.4, aluminium scrap powder 2.5, molybdenum bisuphide 0.4, chromium powder 1.3, graphite 1, be less than 45 microns of Acrawaxs 1.4, be less than 45 microns of stearic acid 1.7.Add up to absolutely.
Making comprises the following steps:
(1) by the weight portion of constitutive material, take each raw material, be crushed to 300-400 order, mix, then pack mould into, be placed on press, pressure 7.5T/CM 2condition under, compressing;
(2) pressed compact after compressing is positioned over and in meshbeltfurnace, carries out successively multi-steps sintering, temperature 600-650 ℃, sintering 30-40 minute; Temperature 800-850 ℃, sintering 60-90 minute; Temperature temperature is controlled at 1200-1250 ℃, sintering 90-120 minute; Then be incubated 30 minutes at Quenching Treatment: 650-685 ℃, continue to be warming up to 900-920 ℃ of insulation 2 hours; At tempering: 370-420 ℃, be incubated 1 hour, cooling, nitriding processing, fine finishining, get product.
The performance data of the automobile clutch gear making by the embodiment of the present invention 1:
Extract ten samples and detect, heat treatment hardness: HRC 48-55; Compressive resistance >=the 5820N of tooth portion, precision can reach H7.The Gear Processing performance that the present invention simultaneously produces is good, labor and material saving, and process velocity promotes greatly.
Following table is that the present invention is assemblied in testing result after clutch:

Claims (2)

1. the automobile clutch gear based on PM technique sintered copper aluminum steel, it is characterized in that: take electrolytic iron powder as matrix, the weight percentage of all the other components is: steel scrap powder 20-30, copper powder 1.2-1.8, sulfuration manganese powder 1.2-1.5, aluminium scrap powder 2-3, molybdenum bisuphide 0.2-0.6, chromium powder 1.2-1.5, graphite 0.8-1.2, be less than 45 microns of Acrawax 1.2-1.6, be less than 45 microns of stearic acid 1.5-1.8;
The preparation method of the described automobile clutch gear based on PM technique sintered copper aluminum steel, comprises the following steps:
(1) by the weight portion of constitutive material, take each raw material, be crushed to 300-400 order, mix, then pack mould into, be placed on press, pressure 7.5T/CM 2condition under, compressing;
(2) pressed compact after compressing is positioned over and in meshbeltfurnace, carries out successively multi-steps sintering, temperature 600-650 ℃, sintering 30-40 minute; Temperature 800-850 ℃, sintering 60-90 minute; Temperature is controlled at 1200-1250 ℃, sintering 90-120 minute; Then be incubated 30 minutes at Quenching Treatment: 650-685 ℃, continue to be warming up to 900-920 ℃ of insulation 2 hours; At tempering: 370-420 ℃, be incubated 1 hour, cooling, nitriding processing, fine finishining, get product.
2. the automobile clutch gear based on PM technique sintered copper aluminum steel according to claim 1, it is characterized in that: take electrolytic iron powder as matrix, the weight percentage of all the other components is: steel scrap powder 25, copper powder 1.5, sulfuration manganese powder 1.4, aluminium scrap powder 2.5, molybdenum bisuphide 0.4, chromium powder 1.3, graphite 1, be less than 45 microns of Acrawaxs 1.4, be less than 45 microns of stearic acid 1.7.
CN201210208549.0A 2012-06-21 2012-06-21 Automobile clutch gear with sintered copper, aluminum and steel based on powder metallurgy technology and manufacturing method of automobile clutch gear Active CN102756123B (en)

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CN201210208549.0A CN102756123B (en) 2012-06-21 2012-06-21 Automobile clutch gear with sintered copper, aluminum and steel based on powder metallurgy technology and manufacturing method of automobile clutch gear

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CN201210208549.0A CN102756123B (en) 2012-06-21 2012-06-21 Automobile clutch gear with sintered copper, aluminum and steel based on powder metallurgy technology and manufacturing method of automobile clutch gear

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CN102756123B true CN102756123B (en) 2014-03-12

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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103537672A (en) * 2013-10-11 2014-01-29 芜湖市鸿坤汽车零部件有限公司 Powder metallurgy automobile engine connecting rod and manufacturing method thereof
CN103551561A (en) * 2013-10-11 2014-02-05 芜湖市鸿坤汽车零部件有限公司 Powder metallurgy automobile transmission synchronizer gear and production method thereof
CN103537679A (en) * 2013-10-11 2014-01-29 芜湖市鸿坤汽车零部件有限公司 Powder metallurgy automobile connecting rod and preparing method of powder metallurgy automobile connecting rod
CN104209523B (en) * 2014-09-26 2016-04-06 河南职业技术学院 A kind of clutch and preparation method thereof

Citations (4)

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CN101708549A (en) * 2009-11-27 2010-05-19 安徽省芜湖市信达粉末冶金零部件有限公司 Powder metallurgy technical formula and technical process thereof
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
CN102049523A (en) * 2009-10-28 2011-05-11 鞍钢重型机械有限责任公司 Free-cutting water-atomized steel powder and preparation method thereof
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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
CN102049523A (en) * 2009-10-28 2011-05-11 鞍钢重型机械有限责任公司 Free-cutting water-atomized steel powder and preparation method thereof
CN101708549A (en) * 2009-11-27 2010-05-19 安徽省芜湖市信达粉末冶金零部件有限公司 Powder metallurgy technical formula and technical process thereof
CN102179519A (en) * 2011-03-09 2011-09-14 宁波甬台粉末冶金有限公司 Powder metallurgy transmission gear and manufacturing method thereof

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