CN103537669A - Powder-metallurgy automobile booster pump stator and manufacturing method thereof - Google Patents
Powder-metallurgy automobile booster pump stator and manufacturing method thereof Download PDFInfo
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- CN103537669A CN103537669A CN201310472068.5A CN201310472068A CN103537669A CN 103537669 A CN103537669 A CN 103537669A CN 201310472068 A CN201310472068 A CN 201310472068A CN 103537669 A CN103537669 A CN 103537669A
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Abstract
The invention discloses a powder-metallurgy automobile booster pump stator. The powder-metallurgy automobile booster pump stator is characterized by being composed of, by weight, 12-13 parts of molybdenum powder, 1-2 parts of copper powder, 1-2 parts of graphite powder, 2-3 parts of zinc stearate, 1-2 parts of molybdenum disulfide, 3.1-3.4 parts of zinc, 81-82 parts of iron powder, 6.6-7.2 parts of manganese, 7.4-7.8 parts of nickel, 4.2-4.3 parts of chromium and 2-3 parts of auxiliary agents. Graphite is added to raw materials of the powder-metallurgy automobile booster pump stator, so that abrasion resistance and lubricity of the powder-metallurgy automobile booster pump stator are enhanced; besides, the structure is compact, the microstructure is good, very few holes are formed, and structural rigidity, hardness, fatigue resistance and tensile strength are excellent; in addition, the problem that the shape of the automobile booster pump stator is complex is solved.
Description
Technical field
The present invention relates to field of powder metallurgy, particularly a kind of powder metallurgy automobile boost pump stator and preparation method thereof.
Background technology
Powder metallurgy be produce metal dust or with metal dust (or mixture of metal dust and non-metal powder) as raw material, through being shaped and sintering, produce the industrial technology of metal material, composite and 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 tool development vitality in new material science.That PM technique possesses is significantly energy-conservation, economize material, excellent performance, Product Precision is high and the series of advantages such as good stability, is very suitable for producing in enormous quantities.In addition, part material and the also available PM technique manufacture of complex parts that with conventional cast method and machining process, cannot prepare, thereby enjoy the attention of industrial quarters.Powder metallurgy structural part product material composition is not limited by melting, both can add alloying component, can add other structural constituent yet, and adjusts as requested in sizable scope, and then can reach the effect of mating with steel part in mechanical property.
Powder metallurgy mechanization degree is high, can reduce personnel, can raise the efficiency again, so that cost-saving.PM technique can replace traditional manufacturing process, for the vast traditional forms of enterprises cost-saving.So study the formula of the powder metallurgy of various components of machine, adapt to different needs, have great importance.
Boosting pump for car steering is the important component part of motor turning.Wherein stator is again the vital part of boost pump, directly has influence on flow, pressure, noise, the service life of boost pump.At present, the stator of power assistance pump for steering generally adopts high-alloy steel to produce.Because boost pump stator is complex-shaped, its processing difficulties, complexity, cost is high.There is the powder metallurgical technique of employing to produce, but end because density low (being less than 6.8), hardness low (being less than HRC30) and intensity, wearability etc. do not reach requirement.
Summary of the invention
The object of this invention is to provide a kind of powder metallurgy automobile boost pump stator and preparation method thereof.
In order to realize object of the present invention, the present invention passes through following scheme implementation:
A boost pump stator, is made by the raw material of following weight portion: molybdenum powder 12-13, copper powder 1-2, graphite powder 1-2, zinc stearate 2-3, molybdenum bisuphide 1-2, Zn 3.1-3.4, iron powder 81-82, Mn 6.6-7.2, Ni 7.4-7.8, Cr 4.2-4.3, auxiliary agent 2-3;
Described auxiliary agent is made by the raw material of following weight portion: iron powder 30-34, bamboo charcoal 3-5, citric acid 2-3, nano titanium oxide 1-2, Silane coupling agent KH550 1-2, tri-iron tetroxide 3-4, potassium dihydrogen phosphate 1-2, zinc stearate 2-3, N220 carbon black 1-2, MTMS 1-2; Preparation method mixes iron powder, bamboo charcoal, tri-iron tetroxide, potassium dihydrogen phosphate, N220 carbon black, grind to form 200-300 order powder, then add MTMS to mix, under 10-15Mpa, be pressed into blank, then, send at 920-950 ℃ and calcine 3-4 hour, cooling after, be ground into 300-400 order powder, mix with other residual components, be heated to 60-70 ℃, under 1200-1500 rev/min, stir 1-2 hour, obtain.
Powder metallurgy automobile boost pump stator of the present invention, by following concrete steps, made:
(1) molybdenum powder, copper powder, Zn, Mn, Ni, Cr, iron powder are mixed, add in suitable quantity of water, send into ball milling in ball mill, obtain 250-400 order powder, then, spraying is dry, oven dry, under 12-15Mpa pressure, is pressed into bulk, then under nitrogen protection atmosphere 600-750 ℃ carry out sintering 8-10 hour, will be after the crushing material after sintering cross 200-400 mesh sieve;
(2) other residual components is mixed;
(3) at 62-66 ℃, after mixing and stirring 70-90 minute, pack step (1), (2) material into mould, be pressed into base;
(4) pressed compact is placed in sintering furnace, with 8-12 ℃/min of speed, is warming up to sintering 1-2 hour under 450-550 ℃ of condition, then be warming up to sintering 1.5-2 hour under 800-850 ℃ of condition with 6-8 ℃/min of speed; Then with 5-7 ℃/min of speed, be warming up to sintering 2-3 hour under 1050-1150 ℃ of condition; In air, be cooled to room temperature.
In raw material of the present invention, increase graphite, increased wearability and the lubricity ，Qie dense structure of boost pump stator, microstructure is good, and seldom, the rigidity of structure, hardness, fatigue performance, tensile strength properties are good for hole; And solved the problem of automobile booster pump stator profile complexity.
Specific embodiments
Below by instantiation, the present invention is described in detail.
A boost pump stator, by following weight portion (kilogram) raw material make: molybdenum powder 12, copper powder 1, graphite powder 1, zinc stearate 2, molybdenum bisuphide 1, Zn 3.1, iron powder 81, Mn 6.6, Ni 7.4, Cr 4.2, auxiliary agent 2;
Described auxiliary agent by following weight portion (kilogram) raw material make: iron powder 30, bamboo charcoal 3, citric acid 2, nano titanium oxide 1, Silane coupling agent KH550 1, tri-iron tetroxide 3, potassium dihydrogen phosphate 1, zinc stearate 2, N220 carbon black 1, MTMS 1; Preparation method mixes iron powder, bamboo charcoal, tri-iron tetroxide, potassium dihydrogen phosphate, N220 carbon black, grind to form 200-300 order powder, then add MTMS to mix, under 10-15Mpa, be pressed into blank, then, send at 920-950 ℃ and calcine 3-4 hour, cooling after, be ground into 300-400 order powder, mix with other residual components, be heated to 60-70 ℃, under 1200-1500 rev/min, stir 1-2 hour, obtain.
Powder metallurgy automobile boost pump stator of the present invention, by following concrete steps, made:
(1) molybdenum powder, copper powder, Zn, Mn, Ni, Cr, iron powder are mixed, add in suitable quantity of water, send into ball milling in ball mill, obtain 250-400 order powder, then, spraying is dry, oven dry, under 12-15Mpa pressure, is pressed into bulk, then under nitrogen protection atmosphere 600-750 ℃ carry out sintering 8-10 hour, will be after the crushing material after sintering cross 200-400 mesh sieve;
(2) other residual components is mixed;
(3) at 62-66 ℃, after mixing and stirring 70-90 minute, pack step (1), (2) material into mould, be pressed into base;
(4) pressed compact is placed in sintering furnace, with 8-12 ℃/min of speed, is warming up to sintering 1-2 hour under 450-550 ℃ of condition, then be warming up to sintering 1.5-2 hour under 800-850 ℃ of condition with 6-8 ℃/min of speed; Then with 5-7 ℃/min of speed, be warming up to sintering 2-3 hour under 1050-1150 ℃ of condition; In air, be cooled to room temperature.
Through detection, hardness of the present invention: HRC69; Tensile strength: 1045MPa.
Claims (2)
1. a powder metallurgy automobile boost pump stator, it is characterized in that, by the raw material of following weight portion, made: molybdenum powder 12-13, copper powder 1-2, graphite powder 1-2, zinc stearate 2-3, molybdenum bisuphide 1-2, Zn 3.1-3.4, iron powder 81-82, Mn 6.6-7.2, Ni 7.4-7.8, Cr 4.2-4.3, auxiliary agent 2-3;
Described auxiliary agent is made by the raw material of following weight portion: iron powder 30-34, bamboo charcoal 3-5, citric acid 2-3, nano titanium oxide 1-2, Silane coupling agent KH550 1-2, tri-iron tetroxide 3-4, potassium dihydrogen phosphate 1-2, zinc stearate 2-3, N220 carbon black 1-2, MTMS 1-2; Preparation method mixes iron powder, bamboo charcoal, tri-iron tetroxide, potassium dihydrogen phosphate, N220 carbon black, grind to form 200-300 order powder, then add MTMS to mix, under 10-15Mpa, be pressed into blank, then, send at 920-950 ℃ and calcine 3-4 hour, cooling after, be ground into 300-400 order powder, mix with other residual components, be heated to 60-70 ℃, under 1200-1500 rev/min, stir 1-2 hour, obtain.
2. powder metallurgy automobile boost pump stator according to claim 1, is characterized in that, by following concrete steps, is made:
(1) molybdenum powder, copper powder, Zn, Mn, Ni, Cr, iron powder are mixed, add in suitable quantity of water, send into ball milling in ball mill, obtain 250-400 order powder, then, spraying is dry, oven dry, under 12-15Mpa pressure, is pressed into bulk, then under nitrogen protection atmosphere 600-750 ℃ carry out sintering 8-10 hour, will be after the crushing material after sintering cross 200-400 mesh sieve;
(2) other residual components is mixed;
(3) at 62-66 ℃, after mixing and stirring 70-90 minute, pack step (1), (2) material into mould, be pressed into base;
(4) pressed compact is placed in sintering furnace, with 8-12 ℃/min of speed, is warming up to sintering 1-2 hour under 450-550 ℃ of condition, then be warming up to sintering 1.5-2 hour under 800-850 ℃ of condition with 6-8 ℃/min of speed; Then with 5-7 ℃/min of speed, be warming up to sintering 2-3 hour under 1050-1150 ℃ of condition; In air, be cooled to room temperature.
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| CN201310472068.5A CN103537669A (en) | 2013-10-11 | 2013-10-11 | Powder-metallurgy automobile booster pump stator and manufacturing method thereof |
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| CN201310472068.5A CN103537669A (en) | 2013-10-11 | 2013-10-11 | Powder-metallurgy automobile booster pump stator and manufacturing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104120367A (en) * | 2014-06-26 | 2014-10-29 | 芜湖市鸿坤汽车零部件有限公司 | High-hardness flange prepared by employing powder metallurgy and preparation method thereof |
| CN106504841A (en) * | 2016-11-17 | 2017-03-15 | 安徽荣玖智能装备科技有限公司 | A kind of wear-resisting new-energy automobile magnetic water pump powder metallurgy magnet ring and preparation method thereof |
| CN106504843A (en) * | 2016-11-17 | 2017-03-15 | 安徽荣玖智能装备科技有限公司 | A kind of high temperature resistant new-energy automobile magnetic water pump powder metallurgy magnet ring and preparation method thereof |
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| US6203753B1 (en) * | 1996-05-13 | 2001-03-20 | The Presmet Corporation | Method for preparing high performance ferrous materials |
| CN1631583A (en) * | 2004-12-24 | 2005-06-29 | 上海汽车股份有限公司 | Powder metallurgy manufacturing method of inside and outside rotor in oil pump |
| CN1865469A (en) * | 2004-05-17 | 2006-11-22 | 株式会社理研 | Iron-based sintered alloy with dispersed hard particles |
| CN101963123A (en) * | 2010-10-15 | 2011-02-02 | 苏州莱特复合材料有限公司 | Powder metallurgy hydraulic motor stator |
| CN102407333A (en) * | 2011-11-08 | 2012-04-11 | 益阳市俊淞汽车配件制造有限公司 | Powder metallurgy stator of car steering pump and production method thereof |
| CN103223490A (en) * | 2013-04-09 | 2013-07-31 | 吴建平 | Method for manufacturing motorcycle crank shaft through powder metallurgy |
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2013
- 2013-10-11 CN CN201310472068.5A patent/CN103537669A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6203753B1 (en) * | 1996-05-13 | 2001-03-20 | The Presmet Corporation | Method for preparing high performance ferrous materials |
| CN1865469A (en) * | 2004-05-17 | 2006-11-22 | 株式会社理研 | Iron-based sintered alloy with dispersed hard particles |
| CN1631583A (en) * | 2004-12-24 | 2005-06-29 | 上海汽车股份有限公司 | Powder metallurgy manufacturing method of inside and outside rotor in oil pump |
| CN101963123A (en) * | 2010-10-15 | 2011-02-02 | 苏州莱特复合材料有限公司 | Powder metallurgy hydraulic motor stator |
| CN102407333A (en) * | 2011-11-08 | 2012-04-11 | 益阳市俊淞汽车配件制造有限公司 | Powder metallurgy stator of car steering pump and production method thereof |
| CN103223490A (en) * | 2013-04-09 | 2013-07-31 | 吴建平 | Method for manufacturing motorcycle crank shaft through powder metallurgy |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104120367A (en) * | 2014-06-26 | 2014-10-29 | 芜湖市鸿坤汽车零部件有限公司 | High-hardness flange prepared by employing powder metallurgy and preparation method thereof |
| CN106504841A (en) * | 2016-11-17 | 2017-03-15 | 安徽荣玖智能装备科技有限公司 | A kind of wear-resisting new-energy automobile magnetic water pump powder metallurgy magnet ring and preparation method thereof |
| CN106504843A (en) * | 2016-11-17 | 2017-03-15 | 安徽荣玖智能装备科技有限公司 | A kind of high temperature resistant new-energy automobile magnetic water pump powder metallurgy magnet ring and preparation method thereof |
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Application publication date: 20140129 |