CN201133435Y - Spring possessing surface reinforcement layer - Google Patents
Spring possessing surface reinforcement layer Download PDFInfo
- Publication number
- CN201133435Y CN201133435Y CNU2008200321515U CN200820032151U CN201133435Y CN 201133435 Y CN201133435 Y CN 201133435Y CN U2008200321515 U CNU2008200321515 U CN U2008200321515U CN 200820032151 U CN200820032151 U CN 200820032151U CN 201133435 Y CN201133435 Y CN 201133435Y
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- CN
- China
- Prior art keywords
- spring
- layer
- hardening layer
- surface hardening
- reinforcement layer
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- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a spring with surface hardening layer; the thickness of the surface hardening layer is 0.2mm to 0.6mm. The spring with surface hardening layer is produced by a shot peening strengthening process which forms a circulatory plastic deformation layer on the surface of the spring with impact of the projectile flow moving at high speed on the surface of the spring, and the plastic deformation layer is the surface hardening layer of the spring. The spring with the surface hardening layer can effectively remove and reduce scratches, breakage and other surface deficiencies of the spring, so as to improve the fatigue strength and extend the service life of the spring.
Description
Technical field
The utility model relates to a kind of spring, especially a kind of spring with surface strengthen layer.
Background technique
In the spring machining process process originally, only be that spring is carried out the shot blast freely accepted, effect has just been removed the residue that the scale on spring surface and wedge angle burr etc. influence the spring outward appearance, and spring is not had due invigoration effect, does not improve the fatigue strength of spring thus.
Summary of the invention
The technical problems to be solved in the utility model is: easily produce fatigue damages such as fracture cut when solving the spring use, fatigue strength is low, the problem that working life is short.
The technological scheme that its technical problem that solves the utility model adopts is: a kind ofly handle the spring with surface strengthen layer through Shot peening, the thickness of described spring surface strengthen layer is 0.2mm～0.6mm.
The beneficial effects of the utility model are: handle the spring with surface strengthen layer through Shot peening, its surface strengthen layer has higher residual compressive stress, because the existence of residual stress in the Spring Steel Wire surface layer, when spring bears alternate load, can offset the tensile stress that produces in a part of alternate load, thereby improve the fatigue strength of spring, in addition on Organizational Structure, the surface strengthen layer of spring has formed the dislocation of very high density, do the time spent simultaneously in alternate load or temperature or both during use, dislocation is queueing discipline gradually, formed polygonization, be to have formed more small subgrain in the surface strengthen layer, it has the effect that improves spring fatigue intensity equally.Surface imperfection such as spring breakage cut can also be eliminated and reduce to surface strengthen layer effectively, crack arrest arranged and shift the effect in tired source, prolongs the working life of spring, and practical application shows that the spring with surface strengthen layer can improve fatigue life more than 100%.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is an A-A profile of the present utility model
1. spring 1-2 surface strengthen layers among the figure
Embodiment
As Fig. 1, spring with surface strengthen layer 1-2 1 shown in Figure 2, be exactly the stress peening process that spring 1 is adopted stress or strain, spring 1 is accepted Shot peening under external force and is handled, thereby has formed certain thickness surface strengthen layer 1-2 on the surface of spring 1.To be exactly the bullet stream that utilizes high-speed motion make spring 1 surface produce circulating plastic deformation layer to the impact on spring 1 surface to stress peening process, cause the microstructure of this layer favourable variation to take place and make surface layer introduce the residual compressive stress field thus, this surface layer is the surface strengthen layer 1-2 of spring 1.During concrete the application, should select suitable shot blasting equipment for use, the linear velocity of the feasible bullet stream that sprays from wheel abrator is 70m/s～90m/s, the bullet of selecting for use should be even, smooth surface, the hardness number of bullet are 49.5HRC～62.5HRC, and the shot peening strength after Shot peening is handled is 0.3A～0.6A, surface coverage is more than 95%, thereby the thickness of the spring 1 surface strengthen layer 1-2 that assurance is obtained reaches 0.2mm～0.6mm.Surface imperfection such as the cut that the surface strengthen layer 1-2 of this spring 1 produces in the time of eliminating and reduce spring 1 use effectively, fracture have crack arrest and shift the effect in tired source, thereby improved spring 1 fatigue strength, have prolonged the working life of spring 1.
Claims (2)
1. spring is characterized in that: described spring (1) has the surface strengthen layer of handling through Shot peening (1-2).
2. spring according to claim 1 is characterized in that: the thickness of described spring (1) surface strengthen layer (1-2) is 0.2mm～0.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200321515U CN201133435Y (en) | 2008-03-14 | 2008-03-14 | Spring possessing surface reinforcement layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200321515U CN201133435Y (en) | 2008-03-14 | 2008-03-14 | Spring possessing surface reinforcement layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201133435Y true CN201133435Y (en) | 2008-10-15 |
Family
ID=40061707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200321515U Expired - Fee Related CN201133435Y (en) | 2008-03-14 | 2008-03-14 | Spring possessing surface reinforcement layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201133435Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155511A (en) * | 2011-04-01 | 2011-08-17 | 青岛帅潮实业有限公司 | Steel plate spring and processing method of steel plate spring |
| CN103352946A (en) * | 2013-07-04 | 2013-10-16 | 昆山杰升精密五金有限公司 | Compression spring |
| CN115135451A (en) * | 2020-03-24 | 2022-09-30 | 日立安斯泰莫株式会社 | Method for determining shot projection condition and method for manufacturing coil spring |
-
2008
- 2008-03-14 CN CNU2008200321515U patent/CN201133435Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155511A (en) * | 2011-04-01 | 2011-08-17 | 青岛帅潮实业有限公司 | Steel plate spring and processing method of steel plate spring |
| CN102155511B (en) * | 2011-04-01 | 2013-05-01 | 青岛帅潮实业有限公司 | Steel plate spring and processing method of steel plate spring |
| CN103352946A (en) * | 2013-07-04 | 2013-10-16 | 昆山杰升精密五金有限公司 | Compression spring |
| CN115135451A (en) * | 2020-03-24 | 2022-09-30 | 日立安斯泰莫株式会社 | Method for determining shot projection condition and method for manufacturing coil spring |
| CN115135451B (en) * | 2020-03-24 | 2024-01-30 | 日立安斯泰莫株式会社 | Method for determining projection condition of projectile and method for manufacturing coil spring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081015 Termination date: 20150314 |
|
| EXPY | Termination of patent right or utility model |