CN103537683A - Powder metallurgy method for producing electromagnetic induction stator - Google Patents
Powder metallurgy method for producing electromagnetic induction stator Download PDFInfo
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- CN103537683A CN103537683A CN201310488529.8A CN201310488529A CN103537683A CN 103537683 A CN103537683 A CN 103537683A CN 201310488529 A CN201310488529 A CN 201310488529A CN 103537683 A CN103537683 A CN 103537683A
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- sintering
- electromagnetic induction
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- density
- induction stator
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Abstract
The invention discloses a powder metallurgy method for producing an electromagnetic induction stator. The electromagnetic induction stator is produced from 0.4% of phosphor copper powder, 0.6% of micro pastille and the balance CuSn10 bronze powder, the adopted technology includes mixing, pressing, sintering, finish turning, whole finishing and surface polishing, and the purpose of adding 0.4% of the phosphor copper powder is to enable a pressed product to be sintered and shrink in a next sintering process so as to increase density; the added micro pastille plays a role in lubrication during formation, and cannot be left in a product after sintering. By the method, density of a finished product can be increased to be close to the density of bronze, electromagnetic property the same as that of the bronze is realized, and production efficiency is greatly improved.
Description
Technical field
The present invention relates to a kind of method of producing electromagnetic induction stator, specifically relate to a kind of method of producing electromagnetic induction stator by powder metallurgic method.
Background technology
It is the method for machining that conventional method is manufactured electromagnetic induction stator.Raw material is bronze bar, and production process is: blanking-rough turn-groove milling-boring-spot-facing-finish turning-surface finish.Machining production efficiency is extremely low, the problem of slot milling is a lot, angle-differentiated inaccurate, jagged overlap etc., and this method usually reduces product electro permanent magnetic and scraps.Also have recently the method for powder metallurgy to produce electromagnetic induction stator, but finished product density is not high enough, does not reach the due electromagnetic performance of electromagnetic induction stator, and can not in this field, apply.
Summary of the invention
The invention provides a kind of new powder metallurgy and produce the method for electromagnetic induction stator, by the technical program, can realize finished product density is increased to the density that approaches bronze material, reach the electromagnetic performance identical with bronze material, and formation efficiency improves greatly.
The present invention is solved by the following technical programs: a kind of method of new powder metallurgy electromagnetic induction, its dusty material forms and comprises by weight percentage 0.4% phosphor copper powder, 0.6% micro mist wax and surplus CuSn10 bronze powder.A kind of preparation method of new powder metallurgy electromagnetic induction rotor is:
Batch mixing: the material of determining formula is mixed, mix in Double cone mixer 2 hours.
Compressing: to adopt the mode of once filling, in mould, with 494Mpa pressure, suppress moulding in 4.3 seconds.
Sintering: direct sintering is 6.7 hours at 920 ℃, sintering atmosphere: guipure speed 30mm/min, hydrogen flowing quantity 3.8m
3/ h, nitrogen amount flow 1.6m
3/ h.
Finish turning: adopt numerically-controlled precise lathe, speed of mainshaft 800r/min, amount of feeding 0.04mm/r, after disc car is thin, peripheral edge portion generation can produce more serious buckling deformation ，Yao Xia road trimming and be flattened, and also radial plate surface car trace is flattened simultaneously.
Full finishing: adopt 100 tons of finishing machines, 6.5 tons of complete machine pressure, by finishing machine, each section, inside and outside footpath thickness is all whole to specification requirement size.
Surface finish: use nylon yarn polishing wheel along the polishing of teeth groove direction, the controlling rotation speed of main shaft of motor 1390r/min of nylon yarn polishing wheel, mode, along the polishing of teeth groove direction, can be removed residual foreign material in teeth groove by hand, removes burrs on edges.
The present invention's beneficial effect is compared with the existing technology:
In the technical program, in formula, dose and in 0.4% phosphor copper powder powder object Shi Xia road sintering circuit, make to press product sintering shrinkage and improve density; The object of adding micro mist wax is lubricate in forming process, after micro mist wax sintering, can not remain in goods; The stria that in molding procedure, 72 wide 2.6mm of 8mm of end face are dark is at powder metallurgy die straight forming, the dimensional accuracy of pressed compact groove is high, high conformity, without burr; Pressed compact overall shrinkage 0.7% after sintering, density is brought up to 7.6 ± 0.1g/cm
3; By finishing and full finishing, make each section, inside and outside footpath thickness all whole to specification requirement size, bring up to>=7.8g/cm of global density
3, the density of local stria part reaches 8.0g/cm
3above, fully guarantee that finished product has good electromagnetic performance.
The specific embodiment
Below by embodiment, the present invention is described in detail, should be understood that, these embodiment only can be used for explaining the present invention and can not be used for explaining limitation of the present invention.
Produce a powder metallurgy process for electromagnetic induction stator, its dusty material forms and comprises by weight percentage 0.4% phosphor copper powder, 0.6% micro mist wax and surplus CuSn10 bronze powder.
A kind of preparation method of new powder metallurgy electromagnetic induction stator is:
Batch mixing: adopt 500KG Double cone mixer, the material of determining formula is mixed, and then mill granulation footpath is on average no more than 100 object powder, mix in Double cone mixer 2 hours.In formula, dose the density that makes to press product sintering shrinkage in 0.4% phosphor copper powder powder object Shi Xia road sintering circuit and improve; The object of adding micro mist wax is lubricate in forming process, after micro mist wax sintering, can not remain in goods.
Compressing: to adopt the mode of once filling, utilize 160 tons of powder automatic moulding machines, briquetting pressure is 127 tons, in mould, with 494Mpa pressure, suppress moulding in 4.3 seconds, thickness is by the thick 0.3mm shaping surplus of staying of finished product, in molding procedure, 72 dark strias of the wide 2.6mm of 8mm of end face are powder metallurgy die straight formings, the dimensional accuracy of pressed compact groove is high, high conformity, without burr, green density reaches 7.4 ± 0.1g/cm
3.
Sintering: utilize net strip sintering furnace, direct sintering is 6.7 hours at 920 ℃.Sintering atmosphere: guipure speed 30mm/min, hydrogen flowing quantity 3.8m
3/ h, nitrogen amount flow 1.6m
3/ h.Pressed compact overall shrinkage 0.7% after sintering, global density can be brought up to 7.6 ± 0.1g/cm
3.
Finish turning: adopt numerically-controlled precise lathe, speed of mainshaft 800r/min, amount of feeding 0.04mm/r, with endoporus
for benchmark, car lower end concave station
dark 1mm; Adjust folder again with endoporus
for benchmark, the corresponding concave station in car upper end
thickness
(thickness leaves the shaping of 0-0.04mm surplus).By web thickness Che Jingzhi
after disc car is thin, peripheral edge portion generation can produce more serious buckling deformation ，Yao Xia road trimming and be flattened, and also radial plate surface car trace is flattened simultaneously.
Full finishing: adopt 100 tons of finishing machines, 6.5 tons of shaping pressure, by finishing machine, each section, inside and outside footpath thickness is all whole to specification requirement size: the shaping surplus of 72 stria parts is 0.3mm, and all the other position shaping surpluses are 0-0.04mm, bring up to>=7.8g/cm of global density
3, the density of local stria part has reached 8.0g/cm
3above, stria portion density fully guarantees that finished product has the electromagnetic performance the same with copper material after improving.
Surface finish: adopt simple electric machine and nylon yarn polishing wheel, the controlling rotation speed of main shaft of motor 1390r/min of nylon yarn polishing wheel, mode is along the polishing of teeth groove direction by hand, remove residual foreign material in teeth groove, remove burrs on edges, get product, by polishing, guaranteed that product has good electromagnetic performance, gained end properties meets < < sintered metal materials-standard > > [ISO5755:1996].
Claims (1)
1. produce a powder metallurgy process for electromagnetic induction stator, it is characterized in that comprising the following steps:
(1) batch mixing: described electromagnetic induction stator is to be made by the raw material of following weight percentage: the CuSn10 bronze powder of 0.4% phosphor copper powder, 0.6% micro mist wax and surplus, the material of determining formula is mixed, and then mill granulation footpath be on average no more than 100 object powder, in Double cone mixer, mix 2 hours;
(2) compacting: adopt the mode of once filling, with 494Mpa pressure compacting moulding in 4.3 seconds, green density reaches 7.4 ± 0.1g/cm in mould
3;
(3) sintering: direct sintering is 6.7 hours at 920 ℃, sintering atmosphere is guipure speed 30mm/min, hydrogen flowing quantity 3.8m
3/ h and nitrogen amount flow 1.6m
3/ h, sintered part density is brought up to 7.6 ± 0.1g/cm
3;
(4) finish turning: adopt numerically-controlled precise lathe, speed of mainshaft 800r/min, amount of feeding 0.04mm/r, web thickness is extremely whole
(5) full finishing: adopt 100 tons of finishing machines, 6.5 tons of complete machine pressure, web thickness is extremely whole
by finishing machine, each section, inside and outside footpath thickness is all whole to specification requirement size, bring up to again>=7.8g/cm of global density after shaping
3, stria position integral body is brought up to 8.0g/cm
3above;
(6) surface finish: use nylon yarn polishing wheel along the polishing of teeth groove direction, the controlling rotation speed of main shaft of motor 1390r/min of nylon yarn polishing wheel, mode, along the polishing of teeth groove direction, is removed residual foreign material in teeth groove by hand, removes burrs on edges, gets product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310488529.8A CN103537683B (en) | 2013-10-17 | 2013-10-17 | Powder metallurgy method for producing electromagnetic induction stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310488529.8A CN103537683B (en) | 2013-10-17 | 2013-10-17 | Powder metallurgy method for producing electromagnetic induction stator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103537683A true CN103537683A (en) | 2014-01-29 |
| CN103537683B CN103537683B (en) | 2015-07-01 |
Family
ID=49961756
Family Applications (1)
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|---|---|---|---|
| CN201310488529.8A Active CN103537683B (en) | 2013-10-17 | 2013-10-17 | Powder metallurgy method for producing electromagnetic induction stator |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2926076B2 (en) * | 1990-08-20 | 1999-07-28 | 株式会社フコク | Ultrasonic motor |
| EP2071707A1 (en) * | 2007-12-13 | 2009-06-17 | Siemens Aktiengesellschaft | Dynamo-electric machine with tooth-wound coils |
| CN102263463A (en) * | 2010-05-24 | 2011-11-30 | 上海日立电器有限公司 | Preparation process of motor rotor |
| 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 |
| US20120169170A1 (en) * | 2009-09-11 | 2012-07-05 | Kabushiki Kaisha Toshiba | Magnet material, permanent magnet, motor and electric generator |
| JP2012241728A (en) * | 2011-05-16 | 2012-12-10 | Ntn Corp | Sintered bearing and fluid dynamic pressure bearing device including the same |
| CN102896318A (en) * | 2012-10-26 | 2013-01-30 | 湘潭长电汽车电器有限公司 | Powder metallurgy method for preparing claw pole of electric generator and claw pole manufactured by method |
| CN102978521A (en) * | 2012-11-22 | 2013-03-20 | 宁波得利时泵业有限公司 | Stator and rotor of homogeneous mixing pump and method for preparing same |
| CN103036371A (en) * | 2012-11-22 | 2013-04-10 | 宁波得利时泵业有限公司 | Stator materials and rotor materials of homogenized mixing pump |
-
2013
- 2013-10-17 CN CN201310488529.8A patent/CN103537683B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2926076B2 (en) * | 1990-08-20 | 1999-07-28 | 株式会社フコク | Ultrasonic motor |
| EP2071707A1 (en) * | 2007-12-13 | 2009-06-17 | Siemens Aktiengesellschaft | Dynamo-electric machine with tooth-wound coils |
| US20120169170A1 (en) * | 2009-09-11 | 2012-07-05 | Kabushiki Kaisha Toshiba | Magnet material, permanent magnet, motor and electric generator |
| CN102263463A (en) * | 2010-05-24 | 2011-11-30 | 上海日立电器有限公司 | Preparation process of motor rotor |
| JP2012241728A (en) * | 2011-05-16 | 2012-12-10 | Ntn Corp | Sintered bearing and fluid dynamic pressure bearing device including the same |
| 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 |
| CN102896318A (en) * | 2012-10-26 | 2013-01-30 | 湘潭长电汽车电器有限公司 | Powder metallurgy method for preparing claw pole of electric generator and claw pole manufactured by method |
| CN102978521A (en) * | 2012-11-22 | 2013-03-20 | 宁波得利时泵业有限公司 | Stator and rotor of homogeneous mixing pump and method for preparing same |
| CN103036371A (en) * | 2012-11-22 | 2013-04-10 | 宁波得利时泵业有限公司 | Stator materials and rotor materials of homogenized mixing pump |
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| Publication number | Publication date |
|---|---|
| CN103537683B (en) | 2015-07-01 |
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Denomination of invention: Powder metallurgy method for producing electromagnetic induction stator Effective date of registration: 20181101 Granted publication date: 20150701 Pledgee: Zhejiang Tailong commercial bank Limited by Share Ltd Quzhou Kecheng branch Pledgor: Yongfeng, Quzhou, Zhejiang metallic article Co., Ltd Registration number: 2018330000352 |
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