CN103537683B - Powder metallurgy method for producing electromagnetic induction stator - Google Patents
Powder metallurgy method for producing electromagnetic induction stator Download PDFInfo
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- CN103537683B CN103537683B CN201310488529.8A CN201310488529A CN103537683B CN 103537683 B CN103537683 B CN 103537683B CN 201310488529 A CN201310488529 A CN 201310488529A CN 103537683 B CN103537683 B CN 103537683B
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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 that powder metallurgic method produces electromagnetic induction stator.
Background technology
Conventional method manufactures the method that electromagnetic induction stator is machining.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 and electromagnetically scraps.Also have the method for powder metallurgy to produce electromagnetic induction stator recently, but finished product density is not high enough, does not reach the due electromagnetic performance of electromagnetic induction stator, and can not apply in this field.
Summary of the invention
The invention provides a kind of method that new powder metallurgy produces electromagnetic induction stator, by the technical program, density finished product density be increased to close to bronze material can be realized, 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, and its dusty material composition comprises 0.4% phosphor copper powder, 0.6% micro mist wax and surplus CuSn10 bronze powder by weight percentage.A kind of preparation method of new powder metallurgy electromagnetic induction rotor is:
Batch mixing: by the material mixing determining to fill a prescription, mix 2 hours in Double cone mixer.
Compressing: to adopt the mode of once filling, in mould with 494Mpa pressure suppress 4.3 seconds shaping.
Sintering: direct sintering 6.7 hours at 920 DEG C, sintering atmosphere: guipure speed 30mm/min, hydrogen flowing quantity 3.8m
3/ h, nitrogen 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, and Yao Xia road trimming is flattened, also flattens radial plate surface car trace simultaneously.
Full finishing: adopt 100 tons of finishing machines, complete machine pressure 6.5 tons, by finishing machine, each for inside and outside footpath section thickness is all whole to technical 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 is along the polishing of teeth groove direction by hand, can remove foreign material residual in teeth groove, removes burrs on edges.
The present invention's beneficial effect is compared with the existing technology:
In the technical program, dose in formula and make laminate sintering shrinkage in 0.4% phosphor copper powder powder object Shi Xia road sintering circuit and improve density; The object of adding micro mist wax is lubricate in forming process, can not remain in goods after micro mist wax sintering; The stria that in molding procedure, end face 72 wide 2.6mm of 8mm are dark is at powder metallurgy die straight forming, and the dimensional accuracy of pressed compact groove is high, uniformity good, impulse-free robustness; Pressed compact overall shrinkage 0.7% after sintering, density brings up to 7.6 ± 0.1g/cm
3; By finishing and full finishing, make each section of inside and outside footpath thickness all whole to technical requirement size, global density brings up to>=7.8g/cm
3, stria position entirety brings up to 8.0g/cm
3above, fully ensure that finished product has good electromagnetic performance.
Detailed description of the invention
Below by embodiment, the present invention is described in detail, should be understood that, these embodiments only can be used for explaining the present invention and can not being used for explaining limitation of the present invention.
Produce a powder metallurgy process for electromagnetic induction stator, its dusty material composition comprises 0.4% phosphor copper powder, 0.6% micro mist wax and surplus CuSn10 bronze powder by weight percentage.
A kind of preparation method of new powder metallurgy electromagnetic induction stator is:
Batch mixing: adopt 500KG Double cone mixer, will determine the material mixing of filling a prescription, and then grind into particle footpath and be on average no more than 100 object powder, in Double cone mixer, mix 2 hours.Dose in formula and make laminate sintering shrinkage in 0.4% phosphor copper powder powder object Shi Xia road sintering circuit and the density improved; The object of adding micro mist wax is lubricate in forming process, can not remain in goods after micro mist wax sintering.
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 4.3 seconds shaping, thickness stays 0.3mm shaping surplus by finished product is thick, the stria that in molding procedure, end face 72 wide 2.6mm of 8mm are dark is powder metallurgy die straight forming, and the dimensional accuracy of pressed compact groove is high, uniformity good, impulse-free robustness, and green density reaches 7.4 ± 0.1g/cm
3.
Sintering: utilize net strip sintering furnace, direct sintering 6.7 hours at 920 DEG C.Sintering atmosphere: guipure speed 30mm/min, hydrogen flowing quantity 3.8m
3/ h, nitrogen flow 1.6m
3/ h.Pressed compact overall shrinkage 0.7% after sintering, global density can bring 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, and Yao Xia road trimming is flattened, and is also flattened by radial plate surface car trace simultaneously.
Full finishing: adopt 100 tons of finishing machines, shaping pressure 6.5 tons, by finishing machine, each for inside and outside footpath section thickness is all whole to technical requirement size: the shaping surplus of 72 slot portion is 0.3mm, all the other position shaping surpluses are 0-0.04mm, and global density brings up to>=7.8g/cm
3, stria position entirety brings up to 8.0g/cm
3above, stria portion density fully ensures 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 foreign material residual in teeth groove, remove burrs on edges, get product, ensure that product has good electromagnetic performance by polishing, gained end properties meets " sintered metal materials-specification " [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 made up of the raw material of following weight percentage: the CuSn10 bronze powder of 0.4% phosphor copper powder, 0.6% micro mist wax and surplus, by the material mixing determining to fill a prescription, and then grind into particle footpath and be on average no more than 100 object powder, in Double cone mixer, mix 2 hours;
(2) suppress: adopt the mode of once filling, in mould with 494Mpa pressure suppress 4.3 seconds shaping, green density reaches 7.4 ± 0.1g/cm
3;
(3) sinter: direct sintering 6.7 hours at 920 DEG C, sintering atmosphere is guipure speed 30mm/min, hydrogen flowing quantity 3.8m
3/ h and nitrogen flow 1.6m
3/ h, sintered part density brings 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, complete machine pressure 6.5 tons, web thickness is extremely whole
by finishing machine, each for inside and outside footpath section thickness is all whole to technical requirement size, after shaping, global density brings up to again>=7.8g/cm
3, stria position entirety brings 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 is along the polishing of teeth groove direction by hand, removes foreign material residual in teeth groove, 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 CN103537683A (en) | 2014-01-29 |
| CN103537683B true CN103537683B (en) | 2015-07-01 |
Family
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Citations (7)
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| 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 |
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2011030387A1 (en) * | 2009-09-11 | 2013-02-04 | 株式会社東芝 | Magnet material, permanent magnet, and motor and generator using the same |
| JP5881975B2 (en) * | 2011-05-16 | 2016-03-09 | Ntn株式会社 | Manufacturing method of sintered bearing |
-
2013
- 2013-10-17 CN CN201310488529.8A patent/CN103537683B/en active Active
Patent Citations (7)
| 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 |
| 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 |
|---|---|
| CN103537683A (en) | 2014-01-29 |
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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 |