CN104801702A - Powder metallurgy stator of vane steering pump and manufacturing process thereof - Google Patents
Powder metallurgy stator of vane steering pump and manufacturing process thereof Download PDFInfo
- Publication number
- CN104801702A CN104801702A CN201510119765.1A CN201510119765A CN104801702A CN 104801702 A CN104801702 A CN 104801702A CN 201510119765 A CN201510119765 A CN 201510119765A CN 104801702 A CN104801702 A CN 104801702A
- Authority
- CN
- China
- Prior art keywords
- powder
- stator
- steering pump
- powder metallurgy
- vane type
- 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
Landscapes
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The invention discloses a powder metallurgy stator of a vane steering pump and a manufacturing process thereof. The powder metallurgy stator which is reasonably selected is formed by, by weight, 1 to 2% of molybdenum powder, 2 to 4% of nickel powder, 0.5 to 1% of tungsten powder, 2 to 3% of copper powder, 0.5 to 0.8% of graphite powder, 0.5 to 0.7% of zinc stearate, 0.5 to 0.8% of molybdenum disulfide and the balance iron powder. According to the manufacturing process, the powder metallurgy stator is good in mechanical performance, long in service life, low in noise and good in flow pulsation rate, the apparent oil density of the stator is not less than 7.1 grams every cubic centimeter, the apparent hardness of the stator is not less than HRC (Rockwell Hardness) 35, the apparent tensile strength of the stator is not less than 955 MPa, the apparent impact value ak of the stator is not less than 55 kilojoules every square meter, the flow pulsation of a booster pump can be significantly improved when the stator is applied to the booster pump, the flow pulsation rate sigma is 5.1 to 5.6%, the service life of the booster pump is extended, and the working noise and the vibration amplitude of automobile parts are reduced.
Description
Technical field
The invention discloses a kind of formula and manufacturing process thereof of powder metallurgy stator, be specially adapted to vane type steering pump, belong to powder metallurgical technology.
Background technology
Automobile power-assisted steering pump and steering gear constitute automobile power steering system jointly, and drive automobile steering roller to realize motor turning function, wherein, the effect of automobile power-assisted steering pump is for steering provides required power source, plays the effect of security protection simultaneously.Divide according to version, can be divided into vane type steering pump, gear type steering pump, electric liquid steering pump and electric powered steering pump, wherein, vane type steering pump has the significant advantages such as volume is little, lightweight, noise is low, is widely adopted in various vehicle.
Vane type steering pump is assembled by multiple parts such as the pump housing, stator, rotor, bearings, stator is for generation of magnetic field, it is a vital part, the impact such as noise, flow, service life for boost pump is great, the performances such as stator fabrication cycle complexity of the prior art and flow pulsation can not meet high-end market demand, need improvement badly.
Summary of the invention
For solving the deficiencies in the prior art, the object of the present invention is to provide a kind of powder metallurgy stator and manufacturing process thereof.
In order to realize above-mentioned target, the present invention adopts following technical scheme:
The powder metallurgy stator of vane type steering pump, its constituent is as follows by weight percentage: molybdenum powder 1 ~ 2%, nickel powder 2 ~ 4%, tungsten powder 0.5 ~ 1%, copper powder 2 ~ 3%, graphite powder 0.5 ~ 0.8%, zinc stearate 0.5 ~ 0.7%, molybdenum bisuphide 0.5 ~ 0.8%, surplus is iron powder, and each component sum is 100%.
Further, the constituent of the metallurgical stator of aforementioned powder also contains percentage by weight is the carbon dust of 0.5 ~ 2%.
Preferably, aforementioned iron powder is 200 object reduced iron powder or atomized iron powders.
Further, the invention also discloses the technique of the powder metallurgy stator of aforesaid vane type steering pump, comprise the steps:
S1, batch mixing are suppressed: prepare each raw material by aforesaid proportioning and mix, and send into mould, adopt 6T/cm
2pressure be pressed into stator blank;
S2, sintering: the stator blank be pressed into by step S1 is sent in the sintering furnace of reducing atmosphere and carried out sintering processes;
S3, shaping: the blank crossed through step S2 sintering processes is carried out shaping to improve Product Precision;
S4, machined: be control vehicle end face with cylindrical by the product after step S3 shaping, then with the good end face of car for benchmark, plain grinding other end, to ensure the perpendicularity of product;
S5, heat treatment: the product after step S4 machined is quenched-temper;
S6, post processing: carry out flat surface grinding, fine grinding inner curve, lappingout plane to the product after step S5 heat treatment, then deburring, cleaning, oven dry immersion oil, obtain the powder metallurgy stator product of vane type steering pump.
Preferably, in abovementioned steps S2, reducing atmosphere is the mist of hydrogen and nitrogen.
More preferably, in abovementioned steps S2, the high temperature section temperature of sintering furnace is 1120 ~ 1200 DEG C, and the sintering processes time is 4 ~ 5h.
Usefulness of the present invention is: the constituent of choose reasonable powder metallurgy stator and percentage by weight, molybdenum powder 1 ~ 2%, nickel powder 2 ~ 4%, tungsten powder 0.5 ~ 1%, copper powder 2 ~ 3%, graphite powder 0.5 ~ 0.8%, zinc stearate 0.5 ~ 0.7%, molybdenum bisuphide 0.5 ~ 0.8%, surplus is iron powder, then production technology of the present invention is utilized, obtain the low and stator that flow pulsation is good of good mechanical property, long service life, noise, stator apparent containing oil density>=7.1g/cm
3, hardness>=HRC35, tensile strength>=955MPa, impact value ak>=55Kj/ ㎡.In the production technology of the powder metallurgy stator of vane type steering pump of the present invention, the design of Stator transitional curve is completed in machined and post processing two step, thus avoid the difference in thickness of stator, improve Product Precision perpendicularity and use computer simulation blade movement track determination elliptic curve equation, when this stator is in for boost pump, significantly can improve the flow pulsation of boost pump, flow pulse rate σ is 5.1-5.6%, extends the service life of boost pump and reduces the vibrations of operating noise and parts.
Detailed description of the invention
Below in conjunction with specific embodiment, concrete introduction is done to the present invention.
Embodiment 1
The powder metallurgy stator of the vane type steering pump of the present embodiment, constituent is as follows by weight percentage: molybdenum powder 1%, nickel powder 2%, tungsten powder 0.5%, copper powder 2%, graphite powder 0.5%, zinc stearate 0.5%, molybdenum bisuphide 0.5%, iron powder 93%.
Wherein, iron powder is 200 object reduced iron powder or atomized iron powders, can improve the density of product; Zinc stearate plays lubrication in pressing process, but understands scaling loss in sintering process, reduces the density of product; Adding of molybdenum bisuphide, not only can play with the equivalent lubrication of zinc stearate, the density of product can also be improved, increase the service life.
The manufacturing process of the powder metallurgy stator of the vane type steering pump of the present embodiment, comprises the steps:
S1, batch mixing are suppressed: prepare each raw material by composition and ratio above and mix, incorporation time is 50 ~ 70min, send into mould, adopt 6T/cm
2pressure be pressed into stator blank;
S2, sintering: the stator blank be pressed into by step S1 is sent in the sintering furnace of reducing atmosphere and carried out sintering processes, reducing atmosphere is the mist of hydrogen and nitrogen, the high temperature section temperature of sintering furnace is 1120 ~ 1200 DEG C, and the sintering processes time is 4 ~ 5h;
S3, shaping: the blank crossed through step S2 sintering processes is carried out shaping to improve Product Precision;
S4, machined: be control vehicle end face with cylindrical by the product after step S3 shaping, then with the good end face of car for benchmark, plain grinding other end, to ensure the perpendicularity of product;
S5, heat treatment: the product after step S4 machined is quenched-temper;
S6, post processing: carry out flat surface grinding, fine grinding inner curve, lappingout plane to the product after step S5 heat treatment, then deburring, cleaning, oven dry immersion oil, obtain the powder metallurgy stator product of vane type steering pump.
Embodiment 2
The present embodiment is roughly the same with embodiment 1, and difference is constituent and weight percent meter, specific as follows: molybdenum powder 2%, nickel powder 4%, tungsten powder 1%, copper powder 3%, graphite powder 0.8%, zinc stearate 0.7%, molybdenum bisuphide 0.8%, iron powder 87.7%.Follow-up process step is identical, repeats no more.
Embodiment 3
The present embodiment is roughly the same with embodiment 1, difference is constituent and weight percent meter, specific as follows: molybdenum powder 1.5%, nickel powder 3%, tungsten powder 1%, copper powder 2%, graphite powder 0.8%, zinc stearate 0.5%, molybdenum bisuphide 0.8%, carbon dust 2%, iron powder 88.4%.Follow-up process step is identical, repeats no more.
After testing, the stator of embodiment 1-3 is apparent containing oil density>=7.1g/cm
3, hardness>=HRC35, tensile strength>=955MPa, impact value ak>=55Kj/ ㎡, good mechanical property, long service life, noise are low and flow pulsation is good, and parts vibration amplitude is little.Time in for boost pump, flow pulse rate σ is 5.1-5.6%, significantly improves.
More than show and describe general principle of the present invention, principal character and advantage.The technical staff of the industry should understand, and above-described embodiment does not limit the present invention in any form, the technical scheme that the mode that all employings are equal to replacement or equivalent transformation obtains, and all drops in protection scope of the present invention.
Claims (6)
1. the powder metallurgy stator of vane type steering pump, it is characterized in that, constituent is as follows by weight percentage: molybdenum powder 1 ~ 2%, nickel powder 2 ~ 4%, tungsten powder 0.5 ~ 1%, copper powder 2 ~ 3%, graphite powder 0.5 ~ 0.8%, zinc stearate 0.5 ~ 0.7%, molybdenum bisuphide 0.5 ~ 0.8%, surplus is iron powder, and each component sum is 100%.
2. the powder metallurgy stator of vane type steering pump according to claim 1, is characterized in that, also containing percentage by weight is the carbon dust of 0.5 ~ 2%.
3. the powder metallurgy stator of vane type steering pump according to claim 1, is characterized in that, described iron powder is 200 object reduced iron powder or atomized iron powders.
4. manufacture the technique of the powder metallurgy stator of vane type steering pump as claimed in claim 1, it is characterized in that, comprise the steps:
S1, batch mixing are suppressed: prepare each raw material by the proportioning of claim 1 and mix, and send into mould, adopt 6T/cm
2pressure be pressed into stator blank;
S2, sintering: the stator blank be pressed into by step S1 is sent in the sintering furnace of reducing atmosphere and carried out sintering processes;
S3, shaping: the blank crossed through step S2 sintering processes is carried out shaping to improve Product Precision;
S4, machined: be control vehicle end face with cylindrical by the product after step S3 shaping, then with the good end face of car for benchmark, plain grinding other end, to ensure the perpendicularity of product;
S5, heat treatment: the product after step S4 machined is quenched-temper;
S6, post processing: carry out flat surface grinding, fine grinding inner curve, lappingout plane to the product after step S5 heat treatment, then deburring, cleaning, oven dry immersion oil, obtain the powder metallurgy stator product of vane type steering pump.
5. the technique of the powder metallurgy stator of manufacture vane type steering pump according to claim 4, is characterized in that, in described step S2, reducing atmosphere is the mist of hydrogen and nitrogen.
6. the technique of the powder metallurgy stator of manufacture vane type steering pump according to claim 4, is characterized in that, in described step S2, the high temperature section temperature of sintering furnace is 1120 ~ 1200 DEG C, and the sintering processes time is 4 ~ 5h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510119765.1A CN104801702A (en) | 2015-03-18 | 2015-03-18 | Powder metallurgy stator of vane steering pump and manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510119765.1A CN104801702A (en) | 2015-03-18 | 2015-03-18 | Powder metallurgy stator of vane steering pump and manufacturing process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104801702A true CN104801702A (en) | 2015-07-29 |
Family
ID=53687133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510119765.1A Pending CN104801702A (en) | 2015-03-18 | 2015-03-18 | Powder metallurgy stator of vane steering pump and manufacturing process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104801702A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105886906A (en) * | 2016-06-27 | 2016-08-24 | 芜湖三刀材料科技有限公司 | Wear-resistant lining material and preparation method |
| CN105886879A (en) * | 2016-06-13 | 2016-08-24 | 芜湖三刀材料科技有限公司 | Shaft sleeve material and preparation method |
| CN106086669A (en) * | 2016-06-13 | 2016-11-09 | 芜湖三刀材料科技有限公司 | A kind of wear-resistant gear and preparation method |
| CN106086589A (en) * | 2016-03-25 | 2016-11-09 | 安徽恒均粉末冶金科技股份有限公司 | The erosion-resisting powder metallurgy of Cutting free is without magnetic balance block and preparation technology thereof |
| CN106119717A (en) * | 2016-06-28 | 2016-11-16 | 无锡新大力电机有限公司 | A kind of novel permanent magnet motor stator manufacture of casing |
| CN106270489A (en) * | 2016-08-29 | 2017-01-04 | 刘翬 | The material prescription of a kind of high-strength powder metallurgical part and processing technology |
| CN106270488A (en) * | 2016-08-29 | 2017-01-04 | 刘翬 | A kind of boosting pump for car steering powder metallurgy rotor formula and processing technology |
| CN108953381A (en) * | 2018-06-28 | 2018-12-07 | 安徽恒均粉末冶金科技股份有限公司 | Impeller sleeve and its manufacturing method |
| CN110240482A (en) * | 2019-06-13 | 2019-09-17 | 浙江永灵液压机械有限公司 | A kind of blade pump stator inner surface heat treatment process |
| CN116516231A (en) * | 2023-05-05 | 2023-08-01 | 扬州威世新材料有限公司 | Powder metallurgy stator ring material and preparation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001007674A1 (en) * | 1999-07-27 | 2001-02-01 | Federal-Mogul Sintered Products Limited | Sintered steel material |
| CN101787482A (en) * | 2010-01-29 | 2010-07-28 | 大连金州永鑫精密铸造厂 | Power source stator for steering pump of automobile and processing technique |
| 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 |
| CN102776434A (en) * | 2012-07-23 | 2012-11-14 | 宁波市鸿博机械制造有限公司 | Cast iron alloy for manufacturing stator of automobile steering pump |
| CN102974824A (en) * | 2012-11-22 | 2013-03-20 | 宁波得利时泵业有限公司 | Method for preparing stator and rotor of homogeneous mixing pump |
| CN103600076A (en) * | 2013-10-10 | 2014-02-26 | 铜陵新创流体科技有限公司 | Powder metallurgical automotive power steering pump stator and manufacture method thereof |
| CN104001923A (en) * | 2014-06-19 | 2014-08-27 | 山西东睦华晟粉末冶金有限公司 | Powder metallurgy manufacturing method for pressure plate |
| WO2014154388A1 (en) * | 2013-03-27 | 2014-10-02 | Robert Bosch Gmbh | Pump having an electric motor |
-
2015
- 2015-03-18 CN CN201510119765.1A patent/CN104801702A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001007674A1 (en) * | 1999-07-27 | 2001-02-01 | Federal-Mogul Sintered Products Limited | Sintered steel material |
| CN101787482A (en) * | 2010-01-29 | 2010-07-28 | 大连金州永鑫精密铸造厂 | Power source stator for steering pump of automobile and processing technique |
| 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 |
| CN102776434A (en) * | 2012-07-23 | 2012-11-14 | 宁波市鸿博机械制造有限公司 | Cast iron alloy for manufacturing stator of automobile steering pump |
| CN102974824A (en) * | 2012-11-22 | 2013-03-20 | 宁波得利时泵业有限公司 | Method for preparing stator and rotor of homogeneous mixing pump |
| WO2014154388A1 (en) * | 2013-03-27 | 2014-10-02 | Robert Bosch Gmbh | Pump having an electric motor |
| CN103600076A (en) * | 2013-10-10 | 2014-02-26 | 铜陵新创流体科技有限公司 | Powder metallurgical automotive power steering pump stator and manufacture method thereof |
| CN104001923A (en) * | 2014-06-19 | 2014-08-27 | 山西东睦华晟粉末冶金有限公司 | Powder metallurgy manufacturing method for pressure plate |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106086589A (en) * | 2016-03-25 | 2016-11-09 | 安徽恒均粉末冶金科技股份有限公司 | The erosion-resisting powder metallurgy of Cutting free is without magnetic balance block and preparation technology thereof |
| CN105886879A (en) * | 2016-06-13 | 2016-08-24 | 芜湖三刀材料科技有限公司 | Shaft sleeve material and preparation method |
| CN106086669A (en) * | 2016-06-13 | 2016-11-09 | 芜湖三刀材料科技有限公司 | A kind of wear-resistant gear and preparation method |
| CN105886906A (en) * | 2016-06-27 | 2016-08-24 | 芜湖三刀材料科技有限公司 | Wear-resistant lining material and preparation method |
| CN106119717A (en) * | 2016-06-28 | 2016-11-16 | 无锡新大力电机有限公司 | A kind of novel permanent magnet motor stator manufacture of casing |
| CN106119717B (en) * | 2016-06-28 | 2018-01-26 | 无锡新大力电机有限公司 | A kind of permanent magnet motor stator manufacture of casing |
| CN106270489A (en) * | 2016-08-29 | 2017-01-04 | 刘翬 | The material prescription of a kind of high-strength powder metallurgical part and processing technology |
| CN106270488A (en) * | 2016-08-29 | 2017-01-04 | 刘翬 | A kind of boosting pump for car steering powder metallurgy rotor formula and processing technology |
| CN108953381A (en) * | 2018-06-28 | 2018-12-07 | 安徽恒均粉末冶金科技股份有限公司 | Impeller sleeve and its manufacturing method |
| CN110240482A (en) * | 2019-06-13 | 2019-09-17 | 浙江永灵液压机械有限公司 | A kind of blade pump stator inner surface heat treatment process |
| CN116516231A (en) * | 2023-05-05 | 2023-08-01 | 扬州威世新材料有限公司 | Powder metallurgy stator ring material and preparation method thereof |
| CN116516231B (en) * | 2023-05-05 | 2023-10-27 | 扬州威世新材料有限公司 | Powder metallurgy stator ring material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104801702A (en) | Powder metallurgy stator of vane steering pump and manufacturing process thereof | |
| CN101638819B (en) | Powder metallurgy bolster and production technology thereof | |
| CN103602849B (en) | A kind of copper base alloy material for sliding bearing and preparation method thereof | |
| JP2014031574A (en) | Method of manufacturing powder metallurgy workpiece and powder metallurgy workpiece | |
| CN102407333A (en) | Powder metallurgy stator of car steering pump and production method thereof | |
| CN104889403A (en) | Method for manufacturing iron-based powder metallurgy components | |
| CN1908211A (en) | Manufacture method of high-strength powder metallurgy bevel gear and copper seeping agent for the same | |
| CN105274384A (en) | High-strength anti-wear copper-based composite material and preparation method thereof | |
| CN103394688A (en) | Heatproof anti-wear self-lubrication material and preparation method thereof | |
| CN103691958A (en) | Powdered metallurgical gear processing technology | |
| CN103567433A (en) | Powder metallurgy valve seat and preparation method thereof | |
| JP2016511327A (en) | Rotor blade type pump blade manufacturing method, rotor blade pump blade, and rotor blade pump | |
| CN103537666A (en) | Powder metallurgy oil pump rotor and manufacturing method thereof | |
| CN109868422B (en) | Powder metallurgy rigid wheel and preparation method thereof | |
| CN109869311A (en) | A kind of motor turning blade pump stator and preparation method thereof | |
| CN104001923A (en) | Powder metallurgy manufacturing method for pressure plate | |
| CN112828292A (en) | Powder metallurgy duplex gear manufacturing and processing method | |
| CN202251812U (en) | Churn drill transmission gear with oil storage micropores | |
| CN103537669A (en) | Powder-metallurgy automobile booster pump stator and manufacturing method thereof | |
| CN107354407A (en) | A kind of heavy load low abrasion copper base friction material and preparation method thereof | |
| CN103602907B (en) | A kind of powder metallurgy rotating bearing and preparation method thereof | |
| CN106270488A (en) | A kind of boosting pump for car steering powder metallurgy rotor formula and processing technology | |
| CN105154710A (en) | Friction-resisting nitrogen-phosphor composite copper-based powder metallurgy material and preparation method thereof | |
| CN103600076B (en) | A kind of powder metallurgy automobile power steering pump stator and preparation method thereof | |
| CN103600062B (en) | A kind of sintered alloy composite and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150729 |
|
| RJ01 | Rejection of invention patent application after publication |