CN101224492A - Forging method of in-wheel motor housing and techniques thereof - Google Patents
Forging method of in-wheel motor housing and techniques thereof Download PDFInfo
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- CN101224492A CN101224492A CNA2007100011311A CN200710001131A CN101224492A CN 101224492 A CN101224492 A CN 101224492A CN A2007100011311 A CNA2007100011311 A CN A2007100011311A CN 200710001131 A CN200710001131 A CN 200710001131A CN 101224492 A CN101224492 A CN 101224492A
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- steel
- hub motor
- motor shell
- casting
- wheel hub
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Abstract
The invention discloses a casting method of a hub motor shell and a process thereof, comprising refining molten steel, casting a steel container with a concentric casting technique, cutting the steel container into steel rings by sections, and finishing the steel rings into the hub motor shell. The invention overcomes the defects that the process is complex and the cost is high when the hub motor shell is finished by a seamless steel pipe originally and the magnetic flux is poor, the crater is easy to crack, the usage is unsafe, etc. when the hub motor shell is finished by the steel ring which is welded by flat steel bars at present. The method and the process are simple and practical, the production efficiency is high, the quality is reliable, the cost is lower, and the invention is suitable for the casting requirement of various hub motor shell products.
Description
Technical field:
The present invention relates to a kind of parts of motor, particularly relate to a kind of shell casting method and technology thereof of wheel hub motor.
Technical background:
The most original wheel hub motor shell is to be cut into steel ring fine finishining with the seamless steel pipe section to form, owing to make the difficulty height of seamless steel pipe, various, the complex process of equipment is so the cost of seamless steel pipe is high especially.Enterprise is in order to reduce cost, replace with the steel ring that flat steel bar is welded, therefore the wheel hub motor shell generally all is to form with the steel ring fine finishining that flat steel bar is welded in the market, but the steel ring operation of producing the flat steel bar welding is also very complicated, and it will cast steel billet through after the high-temperature fusion by the material identification of steel, steel billet is again through being rolled into flat steel bar, it is circular that flat steel bar scale section is cut clod wash, again electric welding carried out in two terminations of flat steel bar and connect, and is made into just round at last.Because the wheel hub motor shell relates to the magnetic flux equilibrium degree, the steel ring that is welded into flat steel bar, the usually interior folder residue of its electric welding connector, weld inhomogeneous, the material unreserved seating of welding rod etc., thus the magnetic flux equilibrium degree of motor influenced, cause the motor rotation frequency instability, the electric welding connector ruptures easily, and uses uneasy congruent shortcoming; Though it is lower that the steel ring of flat steel bar welding is cut the steel ring cost that forms than seamless steel pipe section, quality can not guarantee.
Summary of the invention:
The casting method and the technology thereof that the purpose of this invention is to provide a kind of wheel hub motor shell have effectively solved and have cut the problem that the steel ring cost that forms steel ring high and that be welded with flat steel bar now can not be ensured the quality of products with the seamless steel pipe section originally.
The casting method of wheel hub motor shell of the present invention and technology thereof are achieved in that its key step comprises liquid steel refining, is molded into steel cylinder, the steel cylinder section is cut into steel ring, at last steel ring is finish-machined to the wheel hub motor shell, and it is characterized in that: the technology of steel cylinder die casting is to use the spun casting technology.The technology and the method thereof of above-described wheel hub motor shell casting, its feature also is: the molten steel temperature during spun casting is 1540--1620 ℃, and the rotating speed of mould tube is from beginning 350 rev/mins in the spun casting process--middle 500 rev/mins--last 400 rev/mins; The steel cylinder internal diameter of casting is 180--240mm, and length reaches 1000mm most; The height that the steel cylinder section is cut into steel ring is 20--80mm; Steel ring is finish-machined to the middle groove that is provided with of housing outer wall of wheel hub motor shell.
The present invention adopts the wheel hub motor shell of above-mentioned method and cast, is cut into the wheel hub motor shell that steel ring fine finishining forms with the seamless steel pipe section and compares with original, simplifies working process, reduces cost; Compare with the wheel hub motor shell that the steel ring fine finishining that is welded into flat steel bar now forms, the magnetic flux equilibrium degree is strong, reliable in quality, safe in utilization, cost is lower, thereby overcome the existing cost height of traditional wheel hub motor shell, ropy defective.
Description of drawings:
Figure is the overall structure schematic diagram of wheel hub motor shell of the present invention.
Among the figure: housing 1, groove 2.
The specific embodiment:
Below in conjunction with embodiment the present invention is further described in detail:
One, liquid steel refining: the steel of assert material are poured in the intermediate frequency furnace, added attached material, heat high-temperature fusion and become molten steel.
Two, centrifugally cast step: be material that the mould tube of 9 chromium, 2 molybdenums carries out heat treated in oven earlier 1.When 2, the mould tube is heated to 260 ± 10 ℃, carry out sprayed coating, coating thickness is the 0.2--0.8mm coating.When 3, the mould tube cools to 100--110 ℃, cast by horizontal centrifuge, the temperature of molten steel is 1540--1620 ℃ during casting; The mould tube is from beginning 350 rev/mins--500 rev/mins of centres--, and last 400 rev/mins, such rotating speed process can solve the shortcoming of the many pores of steel billet.4, under action of centrifugal force, form steel billet, the demoulding is shaped after 20 minutes; The internal diameter 180--240mm of shaping steel cylinder, length reaches 1000mm most.
Three, the steel cylinder section is cut into steel ring: the height of steel ring is 20--80mm.
Four, steel ring is finish-machined to the wheel hub motor shell: be provided with groove 2 in the middle of the outer ancient piece of jade, round, flat and with a hole in its centre of the housing 1 of wheel hub motor shell as shown in drawings, groove 2 plays the cooperation that is nested of wheel hub motor outer shroud and uses.
Use method of the present invention and technology, produce the wheel hub motor shell, reduce product cost, reliable in quality, safe in utilization, be suitable for the development requirement of present various wheel hub motor shell products.
Claims (5)
1. the casting method of a wheel hub motor shell and technology thereof, poly-liquid steel refining, die casting formation steel cylinder, the steel cylinder section of comprising was cut into steel ring, at last steel ring was finish-machined to the wheel hub motor shell its main step, and it is characterized in that: the technology of steel cylinder die casting is to use the spun casting technology.
2. the method and the technology thereof of wheel hub motor shell casting according to claim 1, its feature also is: the temperature of molten steel is 1540-1620 ℃ during spun casting; In the spun casting process, the rotating speed of mould tube is from beginning 350 rev/mins-middle 500 rev/mins-last 400 rev/mins.
3. the method and the technology thereof of wheel hub motor shell casting according to claim 1, its feature also is: the internal diameter of steel cylinder is 180-240mm, and length reaches 1000mm most.
4. according to the method and the technology thereof of the described wheel hub motor shell casting of claim 1, its feature also is: the steel ring height is 20-80mm.
5. the method and the technology thereof of wheel hub motor shell casting according to claim 1, its feature also is: be provided with groove (2) as shown in drawings in the middle of the housing of wheel hub motor shell (1) outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100011311A CN101224492A (en) | 2007-01-19 | 2007-01-19 | Forging method of in-wheel motor housing and techniques thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100011311A CN101224492A (en) | 2007-01-19 | 2007-01-19 | Forging method of in-wheel motor housing and techniques thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101224492A true CN101224492A (en) | 2008-07-23 |
Family
ID=39856816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100011311A Pending CN101224492A (en) | 2007-01-19 | 2007-01-19 | Forging method of in-wheel motor housing and techniques thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101224492A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102101242A (en) * | 2009-12-17 | 2011-06-22 | 江苏双勤民生冶化设备制造有限公司 | Method for machining reformer tube |
| CN102386708A (en) * | 2011-11-04 | 2012-03-21 | 无锡天宝电机有限公司 | Method for manufacturing hub motor shell |
| CN102407310A (en) * | 2011-09-30 | 2012-04-11 | 陈留军 | Method for casting cylinder body of hydraulic oil cylinder |
-
2007
- 2007-01-19 CN CNA2007100011311A patent/CN101224492A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102101242A (en) * | 2009-12-17 | 2011-06-22 | 江苏双勤民生冶化设备制造有限公司 | Method for machining reformer tube |
| CN102407310A (en) * | 2011-09-30 | 2012-04-11 | 陈留军 | Method for casting cylinder body of hydraulic oil cylinder |
| CN102386708A (en) * | 2011-11-04 | 2012-03-21 | 无锡天宝电机有限公司 | Method for manufacturing hub motor shell |
| CN102386708B (en) * | 2011-11-04 | 2015-09-02 | 无锡天宝电机有限公司 | A kind of preparation method of hub motor shell |
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Open date: 20080723 |