CN104073723A - Powder metallurgy material for manufacturing high-density part and processing technology thereof - Google Patents
Powder metallurgy material for manufacturing high-density part and processing technology thereof Download PDFInfo
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- CN104073723A CN104073723A CN201410296216.7A CN201410296216A CN104073723A CN 104073723 A CN104073723 A CN 104073723A CN 201410296216 A CN201410296216 A CN 201410296216A CN 104073723 A CN104073723 A CN 104073723A
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- powder metallurgy
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Abstract
The invention relates to a powder metallurgy material for manufacturing a high-density part and a processing technology thereof. A powder metallurgy iron-based alloy is prepared from the following raw materials in percentage by weight: 0.2-0.3% of C, 0.2-0.6% of P, 0-4% of Cu, 0-0.5% of Mo and balance of Fe. The processing technology of the powder metallurgy material for manufacturing the high-density part comprises the following steps: uniformly mixing powder metallurgy raw materials in a mixer, and then pressing and moulding by adopting a powder metallurgy press, wherein density of a pressed green body is 7.2-7.25g/cm<3>; carrying out high temperature sintering for 30-40 minutes at a sintering temperature of 1120-1200 DEG C; carrying out mechanical processing, so that a powder metallurgy part with the density of 7.2-7.4g/cm<3> is obtained. The powder metallurgy material for manufacturing the high-density part has the advantages that sintering expansion, caused by copper, of the part is inhibited by adjusting carbon content; a phosphorus alloying element is added into the powder metallurgy material, and the powder metallurgy material intensely shrinks during high temperature sintering, so that density of the part is improved; the powder metallurgy material is reasonable in composition, manufacturing cost is low, and a technology is simple.
Description
Technical field
The present invention relates to a kind of metallic substance and complete processing thereof, specifically a kind of mmaterial and complete processing thereof of manufacturing high density parts.Its for the manufacture of parts density at 7.2g/cm
3-7.4g/cm
3between.
Background technology
Fe-Cu-C composition in mmaterial is the material prescription being most widely used.Conventional production process finished parts density is the highest at 7.2g/cm
3below, although green density can reach 7.2g/cm
3.But while reaching 1080 DEG C-1085 DEG C along with temperature in sintering process, the migration of copper generation material, copper, to the infiltration of iron-based body skeleton, causes that volume of part expands.After sintering, density will drop to and only have 7.09g/cm
3left and right.Although green density is accomplished high value, due to sintering grow, end article density does not reach requirement.The mechanical property of part just can not meet design requirement.If need to bring up to 7.4g/cm
3.Conventional way need to by as repressing and re-sintering, ooze the techniques such as copper and make.Although can reach, manufacturing process relative complex, cost are also higher.
Summary of the invention
Technical problem to be solved by this invention is to overcome above-mentioned the deficiencies in the prior art, provides a kind of composition rationally, and manufacturing procedure is simple, and the parts density of manufacture is at 7.2g/cm
3-7.4g/cm
3between, wear-resistant withstand voltage and self-lubricating property high mmaterial and complete processing thereof.
The technical scheme that the present invention solves the problems of the technologies described above employing is: a kind of mmaterial of manufacturing high density parts, it is characterized in that: the composition (% by weight) of its powder metallurgical ferrous alloy raw material is: C 0.2-0.3, P 0.2-0.6, Cu 0-4, Mo 0-0.5, surplus Fe.
The complete processing of the mmaterial of the above-mentioned manufacture high density parts of the present invention, is characterized in that: first by proportioning, powder metallurgy raw material is mixed in mixer, then use powder metallurgy press press forming, the green density of compacting is 7.2g/cm
3-7.25 g/cm
3; High temperature sintering, sintering temperature 1120-1200 DEG C, sintering time 30-40 minute; With the processing of net belt type heat treatment furnace, quenching temperature 830-840 DEG C, soaking time 1.5-2 hour; Tempering adopts the low-temperaturetempering of 180 DEG C, is incubated 2 hours; Then machining obtains density at 7.2g/cm
3-7.4g/cm
3between powdered metal parts.
The present invention suppresses by adjusting carbon content the part sintering grow that copper causes; And add phosphoric in material, in the time of high temperature sintering, strong contraction improved parts density.Use U.S. lubricant APEX to improve green density simultaneously.Against existing technologies, rationally, manufacturing cost is lower, technique is simple for its material composition, and the parts density of manufacture is at 7.2g/cm
3-7.4g/cm
3between.The invention solves the make powder deficiency of metallurgical high density parts of routine.Not only reduce pressure when goods are shaped, the more important thing is and can obtain high-density powder metallurgy parts.
Embodiment
Manufacture a mmaterial for high density parts, the composition (% by weight) of its powder metallurgical ferrous alloy raw material is: C:0.2-0.3, P:0.2-0.6, Cu:0-4, Mo:0-0.5, surplus Fe.
The complete processing of the mmaterial of the above-mentioned manufacture high density parts of the present invention, first by proportioning, powder metallurgy raw material is mixed in mixer, lubricant uses U.S. APEX, then uses powder metallurgy press press forming, and the green density of compacting is 7.2g/cm
3-7.25 g/cm
3; Then high temperature sintering, sintering temperature 1120-1200 DEG C, sintering time 30-40 minute; Use net belt type heat treatment furnace, quenching temperature 830-840 DEG C, soaking time 1.5-2 hour; Tempering adopts the low-temperaturetempering of 180 DEG C, is incubated 2 hours; Then machining obtains density at 7.2g/cm
3-7.4g/cm
3between powdered metal parts.
Material composition of the present invention rationally, reduces the usage quantity of carbon in material, the high compression performance that can reduce iron powder of carbon amount.The usage quantity of adjusting carbon, carbon amount is 0.2%-0.3%, this carbon content can suppress copper and spread in iron-based body, reduces the expansibility of part.Use U.S. lubricant APEX, green density can be brought up to 7.2g/cm
3above.In material, add phosphoric, P content is 0.2%-0.6%, and the suitable phosphoric that adds, makes material in sintering process, show the trend of contraction.At 1120 DEG C of-1200 DEG C of temperature range high temperature sinterings, while making material sintering, strongly shrink.The present invention has improved green density, has reduced expansibility.Manufacturing cost is lower, technique is simple, and the parts density of manufacture is at 7.2 g/cm
3-7.4g/cm
3between.The invention solves the make powder deficiency of metallurgical high density parts of routine.Not only reduce pressure when goods are shaped, the more important thing is and can obtain high-density powder metallurgy parts.
Embodiment 1: a kind of mmaterial, the composition (% by weight) of its powder metallurgical ferrous alloy raw material is: C:0.2, P:0.4, surplus Fe.
By proportioning, powder metallurgy raw material is mixed in mixer, lubricant uses U.S. APEX, then uses powder metallurgy press press forming, and the green density of compacting is 7.24g/cm
3, then high temperature sintering, 1180 DEG C of sintering temperatures, sintering time 30 minutes; Use net belt type heat treatment furnace, quenching temperature 830-840 DEG C, soaking time 1.5-2 hour; Tempering adopts the low-temperaturetempering of 180 DEG C, is incubated 2 hours; It is 7.38g/cm that then machining obtains density
3powdered metal parts.Hardness, the intensity of the more conventional Fe-2Cu-0.8C material parts of this composition part are high; Toughness is lower slightly.
Embodiment 2: a kind of mmaterial, the composition (% by weight) of its powder metallurgical ferrous alloy raw material is: C:0.3; P:0.4; Cu:2; Surplus Fe.By proportioning, powder metallurgy raw material is mixed in mixer, lubricant uses U.S. APEX, then uses powder metallurgy press press forming, and the green density of compacting is 7.2g/cm
3; Then high temperature sintering, sintering temperature 1120-1200 DEG C, sintering time 30-40 minute; Use net belt type heat treatment furnace, quenching temperature 830-840 DEG C, soaking time 1.5-2 hour; Tempering adopts the low-temperaturetempering of 180 DEG C, is incubated 2 hours; It is 7.31g/cm that then machining obtains density
3powdered metal parts.This composition part can obtain tensile strength at 100kg/cm after by thermal treatment
2above.Compared with Fe-2Cu-0.8C material, there is more superior comprehensive mechanical performance.
Embodiment 3: a kind of mmaterial, the composition (% by weight) of its powder metallurgical ferrous alloy raw material is: C:0.25; P:0.4; Cu:4; Mo:0.5 surplus Fe.By proportioning, powder metallurgy raw material is mixed in mixer, lubricant uses U.S. APEX, then uses powder metallurgy press press forming, and the green density of compacting is 7.2g/cm
3-7.25 g/cm
3; Then high temperature sintering, 1200 DEG C of sintering temperatures, sintering time 40 minutes; Use net belt type heat treatment furnace, quenching temperature 830-840 DEG C, soaking time 1.5-2 hour; Tempering adopts the low-temperaturetempering of 180 DEG C, is incubated 2 hours; It is 7.4g/cm that then machining obtains density
3powdered metal parts.This composition part can obtain tensile strength at 100kg/cm after by thermal treatment
2above.Compared with Fe-2Cu-0.8C material, there is more superior comprehensive mechanical performance.
Claims (2)
1. a mmaterial of manufacturing high density parts, is characterized in that: the composition (% by weight) of its powder metallurgical ferrous alloy raw material is: C 0.2-0.3, P 0.2-0.6, Cu 0-4, Mo 0-0.5, surplus Fe.
2. described in a claim 1, manufacture the complete processing of the mmaterial of high density parts, it is characterized in that: first by proportioning, powder metallurgy raw material is mixed in mixer, then use powder metallurgy press press forming, the green density of compacting is 7.2g/cm
3-7.25g/cm
3; Then high temperature sintering, sintering temperature 1120-1200 DEG C, sintering time 30-40 minute; Use net belt type heat treatment furnace, quenching temperature 830-840 DEG C, soaking time 1.5-2 hour; Tempering adopts the low-temperaturetempering of 180 DEG C, is incubated 2 hours; Then machining obtains density at 7.2 g/cm
3-7.4g/cm
3between powdered metal parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410296216.7A CN104073723A (en) | 2014-06-27 | 2014-06-27 | Powder metallurgy material for manufacturing high-density part and processing technology thereof |
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|---|---|---|---|
| CN201410296216.7A CN104073723A (en) | 2014-06-27 | 2014-06-27 | Powder metallurgy material for manufacturing high-density part and processing technology thereof |
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| Publication Number | Publication Date |
|---|---|
| CN104073723A true CN104073723A (en) | 2014-10-01 |
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|---|---|---|---|
| CN201410296216.7A Pending CN104073723A (en) | 2014-06-27 | 2014-06-27 | Powder metallurgy material for manufacturing high-density part and processing technology thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104630612A (en) * | 2014-12-25 | 2015-05-20 | 佛山市盈峰粉末冶金科技有限公司 | Phosphorus-containing powder metallurgy material for manufacturing iron-based structural component and preparation method thereof |
| CN107177794A (en) * | 2017-05-16 | 2017-09-19 | 扬州保来得科技实业有限公司 | A kind of damping powder metallurgical gear and preparation method thereof |
| CN109158593A (en) * | 2018-08-17 | 2019-01-08 | 宁波瑞丰汽车零部件有限公司 | A kind of preparation method of desk connecting bracket |
| CN112063933A (en) * | 2020-09-02 | 2020-12-11 | 苏州萨伯工业设计有限公司 | Powder metallurgy formula for oil replenishing pump rotor |
| CN112453387A (en) * | 2020-11-27 | 2021-03-09 | 深圳市日东科技发展有限公司 | Powder metallurgy-based high-density stainless steel product formula and process thereof |
Citations (4)
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| JPH0297605A (en) * | 1988-09-30 | 1990-04-10 | Komatsu Ltd | Manufacture of high strength sintered member |
| CN1152086A (en) * | 1996-08-29 | 1997-06-18 | 莱阳市粉末冶金厂 | Diesel engine powder metallurgical start-gear and its prodn |
| JPH10501299A (en) * | 1994-05-27 | 1998-02-03 | ホガナス アクチボラゲット | Iron-based powder containing Mo, P, C |
| CN103710623A (en) * | 2014-01-14 | 2014-04-09 | 山东威达粉末冶金有限公司 | Spiral nut for powder metallurgy pneumatic rock drill and machining process thereof |
-
2014
- 2014-06-27 CN CN201410296216.7A patent/CN104073723A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0297605A (en) * | 1988-09-30 | 1990-04-10 | Komatsu Ltd | Manufacture of high strength sintered member |
| JPH10501299A (en) * | 1994-05-27 | 1998-02-03 | ホガナス アクチボラゲット | Iron-based powder containing Mo, P, C |
| CN1152086A (en) * | 1996-08-29 | 1997-06-18 | 莱阳市粉末冶金厂 | Diesel engine powder metallurgical start-gear and its prodn |
| CN103710623A (en) * | 2014-01-14 | 2014-04-09 | 山东威达粉末冶金有限公司 | Spiral nut for powder metallurgy pneumatic rock drill and machining process thereof |
Non-Patent Citations (1)
| Title |
|---|
| 刘传习等: "Fe-P-C-Cu-Mo系粉末合金的组织、性能及断口", 《粉末冶金技术》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104630612A (en) * | 2014-12-25 | 2015-05-20 | 佛山市盈峰粉末冶金科技有限公司 | Phosphorus-containing powder metallurgy material for manufacturing iron-based structural component and preparation method thereof |
| CN107177794A (en) * | 2017-05-16 | 2017-09-19 | 扬州保来得科技实业有限公司 | A kind of damping powder metallurgical gear and preparation method thereof |
| CN109158593A (en) * | 2018-08-17 | 2019-01-08 | 宁波瑞丰汽车零部件有限公司 | A kind of preparation method of desk connecting bracket |
| CN109158593B (en) * | 2018-08-17 | 2021-04-30 | 宁波瑞丰汽车零部件有限公司 | Preparation method of office table connecting bracket |
| CN112063933A (en) * | 2020-09-02 | 2020-12-11 | 苏州萨伯工业设计有限公司 | Powder metallurgy formula for oil replenishing pump rotor |
| CN112453387A (en) * | 2020-11-27 | 2021-03-09 | 深圳市日东科技发展有限公司 | Powder metallurgy-based high-density stainless steel product formula and process thereof |
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Application publication date: 20141001 |