CN102500739B - Manufacturing method for forging outer ring of outer ring sleeve of wheel hub by permeating rare earth - Google Patents
Manufacturing method for forging outer ring of outer ring sleeve of wheel hub by permeating rare earth Download PDFInfo
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- CN102500739B CN102500739B CN201110299322.7A CN201110299322A CN102500739B CN 102500739 B CN102500739 B CN 102500739B CN 201110299322 A CN201110299322 A CN 201110299322A CN 102500739 B CN102500739 B CN 102500739B
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- rare earth
- outer ring
- forging
- permeating
- wheel hub
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Abstract
The invention relates to a manufacturing method for forging an outer ring of an outer ring sleeve of a wheel hub by permeating rare earth, comprising the following steps of: (1) heating a rough forged work piece to a temperature in a range of 300-350 DEG C and uniformly spraying a rare earth mixture on the surface of the heated rough forged work piece, wherein the thickness of the rare earth mixture is 2-3 mm; (2) forging; (3) standing for 5-6 minutes; (4) stripping the rare earth mixture; and (5) carrying out a jacking process. The manufacturing method provided by the invention has the beneficial effects that: 1, the rare earth mixture permeates to the surface layer of the work piece to form a rare earth compound so that a metal structure on the surface layer of the work piece is compact; 2, alloy crystalline grains are fined through permeating a rare earth element so that the mechanical performance of an alloy is improved; and 3, the rare earth element is an active element so that the surface performance of the alloy can be obviously improved by the rare earth element gathered on the metal surface.
Description
Technical field
The invention belongs to special technical field of new material preparation, is mainly a kind of production method of forging outer ring of outer ring sleeve of wheel hub by permeating rare earth.
Background technology
Hub bearing is very important parts on automobile, in manufacturing process, require extremely harsh, and as one the technique----Forging Technology of hub bearing most critical, be that requirement is very strict, because this procedure directly affects product quality, service life, safety coefficient etc.Forging Technology 100% outer ring is all to forge by cover the technological requirement that reaming reaches wheel hub outer ring.As shown in Figure 1, hub spindle bearing sleeve, is generally comprised of an outer ring and two inner rings, and technique is as follows: add man-hour, an outer ring and an inner ring are processed simultaneously, and another inner ring is reprocessed separately.The shortcoming of above-mentioned technical matters is: can only one outer ring and an inner ring production and processing simultaneously, the hub bearing metal fibrous tissue that technique is forged is all breaking state, the hub bearing forging, because surplus is little or anneal oxidation is too many, does not reach specification requirement on carbide network always; Low load with strong power (inner ring forges does not need so large power).
Summary of the invention
Object of the present invention will overcome the deficiency of above-mentioned technology just, and a kind of production method of forging outer ring of outer ring sleeve of wheel hub by permeating rare earth is provided, meet the requirement of high-performance hub bearing and raise the efficiency, energy-conservation effect.
The present invention solves the technical scheme that its technical problem adopts: the production method of this forging outer ring of outer ring sleeve of wheel hub by permeating rare earth, and the method step is:
(1), jumping-up workpiece heats after 300-350 ℃, the jumping-up that lucium is evenly sprayed at after heating adds
On surface of the work, thickness is 2-3 millimeter;
(2), forge:
(3), static 5-6 minute;
(4), peel off lucium;
(5), carry out jacking technique.
Described lucium is one or more mixtures of lanthanum, cerium, praseodymium, neodymium, content of rare earth 75%-80%.
After described jacking technique, forge two outer rings simultaneously, inner ring is forged by other small-power forging machines.
The effect that the present invention is useful is: the present invention carries out the infiltration of high temperature forging rare earth by evenly spray lucium on jumping-up workpiece, through in many ways studying and verifying, compared with prior art has following advantage:
1, lucium is penetrated into workpiece surface and forms rare earth compound, makes workpiece surface metal structure tight;
2, the infiltration of rare earth element makes alloy grain refinement, and alloy mechanical performance is improved;
3, rare earth element is a kind of active element, and the rare earth element that is gathered in metal surface can significantly improve the surface of alloy.
Accompanying drawing explanation
Fig. 1 is the process chart of prior art;
Fig. 2 is process chart of the present invention;
The specific embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with for example, the present invention is further elaborated.Should be appreciated that described herein giving an example only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 2, the production method of this forging outer ring of outer ring sleeve of wheel hub by permeating rare earth, the method step is:
(1), jumping-up workpiece heats after 300-350 ℃, and lucium is evenly sprayed in the jumping-up work piece surface after heating, thickness is 2-3 millimeter;
(2), forge:
(3), static 5-6 minute;
(4), peel off lucium;
(5), carry out jacking technique.
Described lucium is one or more mixtures of lanthanum, cerium, praseodymium, neodymium, content of rare earth 75%-80%.
After described jacking technique, forge two outer rings simultaneously, inner ring is forged by other small-power forging machines; General outer ring weighs 400-800 grams/part, and inner ring weighs 150-300 grams/part, and the same energy and manually input, produce 2 outer rings, has improved efficiency and (has economized power consumption; Economize mould; Improved working (machining) efficiency).Inner ring, by other small-power forging machine, goes out 2 inner rings simultaneously, can solve another difficult problem that wheel hub forges: realize can processing work height high, wall thickness, expansion sky than little performance.
One, experimental data
| Number of times | Metallographic structure (level) | Carbide network (level) | Decarburized layer (millimeter) |
| 01 | 2 | 2 | 0.23 |
| 02 | 2 | 2 | 0.24 |
| 03 | 2 | 2 | 0.24 |
| 04 | 2 | 2 | 0.23 |
| 05 | 3 | 2 | 0.22 |
| 06 | 3 | 2 | 0.22 |
Effect of the present invention:
1, outer ring of outer ring sleeve of wheel hub plays very large advantage on energy-saving and cost-reducing, is first on conservation of raw material, is secondly on power consumption.On conservation of raw material, key is that product egative film can secondary utilization, again forges various 8 class bearings etc.More aobvious advantage on power consumption, Medium Frequency Induction Heating Furnace is high-energy equipment, same material power consumption is identical, but outer ring of outer ring sleeve weight has increased by 40%, and can power consumption constant.Not only the output value increases, and power consumption declines, and integrated cost straight line declines, and profit margin is turned at double.
2, to change the hub bearing metal fibrous tissue that technique in the past forges be all breaking state in the present invention, can be evenly distributed by the hub bearing metal fibrous tissue of outer ring of outer ring sleeve, and density is very intact.Secondly be this piece of carbide network; the hub bearing in the past forging is because surplus is little or anneal oxidation is too many; on carbide network, do not reach specification requirement always; but the hub bearing surplus forging by outer ring of outer ring sleeve technique is according to Design of Dies precision; pass through again nitrogen protection atmosphere spheroidizing, can reach >=1 grade standard of product carbide network.Decarburized layer can reach≤0.3 in.Metallographic structure can reach 1-2 grade standards.
Physical property table
Be understandable that, for a person skilled in the art, technical scheme of the present invention and inventive concept are equal to replace or change all should belong to the protection domain of the appended claim of the present invention.
Claims (3)
1. a production method for forging outer ring of outer ring sleeve of wheel hub by permeating rare earth, is characterized in that: the method step is:
(1), jumping-up workpiece heats after 300-350 ℃, and lucium is evenly sprayed in the jumping-up work piece surface after heating, thickness is 2-3 millimeter;
(2), forge;
(3), static 5-6 minute;
(4), peel off lucium;
(5), carry out jacking technique.
2. the production method of forging outer ring of outer ring sleeve of wheel hub by permeating rare earth according to claim 1, is characterized in that: described lucium is one or more mixtures of lanthanum, cerium, praseodymium, neodymium, content of rare earth 75%-80%.
3. the production method of forging outer ring of outer ring sleeve of wheel hub by permeating rare earth according to claim 1, is characterized in that: after described jacking technique, forge two outer rings, inner ring is forged by other small-power forging machines simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110299322.7A CN102500739B (en) | 2011-09-28 | 2011-09-28 | Manufacturing method for forging outer ring of outer ring sleeve of wheel hub by permeating rare earth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110299322.7A CN102500739B (en) | 2011-09-28 | 2011-09-28 | Manufacturing method for forging outer ring of outer ring sleeve of wheel hub by permeating rare earth |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102500739A CN102500739A (en) | 2012-06-20 |
| CN102500739B true CN102500739B (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110299322.7A Expired - Fee Related CN102500739B (en) | 2011-09-28 | 2011-09-28 | Manufacturing method for forging outer ring of outer ring sleeve of wheel hub by permeating rare earth |
Country Status (1)
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| CN (1) | CN102500739B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112404337B (en) * | 2020-10-21 | 2024-04-12 | 洛阳市洛凌轴承科技股份有限公司 | NU2300 series bearing sleeve forging process |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5151489B2 (en) * | 2007-01-16 | 2013-02-27 | 日本精工株式会社 | Manufacturing method of bearing outer ring |
| DE102007027216A1 (en) * | 2007-06-13 | 2008-12-18 | Schaeffler Kg | Method for chipless production of a rolling bearing |
| CN101934340A (en) * | 2009-06-30 | 2011-01-05 | 株式会社阪村热处理技术 | Method and apparatus for manufacturing inner ring and outer ring |
| CN201572875U (en) * | 2009-12-08 | 2010-09-08 | 黄石哈特贝尔精密锻造有限公司 | Forging die for first-generation hub bearing outer ring double-face forming technique |
| CN101947630B (en) * | 2010-09-17 | 2012-08-29 | 洛阳轴研科技股份有限公司 | Controlled-forging controlled-cooling processing technology of bearing ring prepared by GCr15 |
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2011
- 2011-09-28 CN CN201110299322.7A patent/CN102500739B/en not_active Expired - Fee Related
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| CN102500739A (en) | 2012-06-20 |
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