CN105648184A - Heat treatment technology of springs - Google Patents
Heat treatment technology of springs Download PDFInfo
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- CN105648184A CN105648184A CN201410719120.7A CN201410719120A CN105648184A CN 105648184 A CN105648184 A CN 105648184A CN 201410719120 A CN201410719120 A CN 201410719120A CN 105648184 A CN105648184 A CN 105648184A
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- springs
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Abstract
The invention discloses a heat treatment technology of springs. Materials adopt 65Mn. The technology is characterized by comprising steps as follows: firstly, creeping tempering is performed at the temperature of 200-400 DEG C for about 30-50 min; the holding time for reheating pre-stressing treatment is 2-6 h, and the springs are pressed to the specified height at the lower speed for 1-2 min and then slowly released for 1-2 min, so that the springs have plastic deformation; finally, age-hardening treatment is performed at the temperature of 450-520 DEG C, and the springs have the hardness of 32-56 HRC after age-hardening treatment. With the adoption of the heat treatment technology of the springs, the yield strength and the tensile strength are improved due to age-hardening treatment, elongation and impact toughness reduction phenomena are avoided, looseness of the springs is prevented, the fatigue strength is improved, and the service life is prolonged.
Description
Technical field
The invention belongs to the Technology for Heating Processing of a kind of spring.
Background technology
The spring worked under the high temperature conditions, in order to prevent creep and lax, should carry out heat swirling flows or creep tempering. Swirling flows of heating is the swirling flows carried out higher than operating temperature when by spring. When adding load, deformation state or doubling-up state when being generally work carry out the technique of lonneal creep tempering, both differ primarily in that stress and temperature retention time, they all have the dual function of strengthening and stress relief annealing, this is advantageous for for the spring of the environmental work slightly higher in temperature, it is possible to prevent relaxing of spring on the one hand, fatigue strength can be improved on the other hand; But if intensive treatment is suitable, under same working condition, the fatigue life of spring can improve 5%��35%; Whereas if deal with improperly, as preload is excessive, instead can make decline fatigue life; It addition, spring product is after the work of certain time, along with the change of residual deformation and spring performance, the normal operation of spring can be made to be destroyed.
Summary of the invention
It is an object of the invention to for Shortcomings part in above-mentioned technology, the present invention provides the Technology for Heating Processing of a kind of spring, it is possible to prevent relaxing of spring, improves fatigue strength and service life.
The technical scheme realizing the object of the invention is as follows:
A kind of Technology for Heating Processing of spring, material is 65Mn, it is characterised in that its technique includes claimed below: first creep tempering, and temperature is at 200��400 DEG C, and the creep tempering time is about 30-50min; Heat again retention time of swirling flows is 2��6h, with slower speed 1-2min, spring is depressed into specified altitude, then slowly decontrols 1-2min, makes spring produce plastic deformation; Last 450-520 DEG C of age-hardening process, it is 32-56HRC that age-hardening processes rear spring hardness.
A kind of Technology for Heating Processing of the spring of the present invention, the hot prestressing of spring processes the stabilizing surface treatment as spring, the place of suppressing that heats can significantly reduce outside permanent deformation, the fatigue life of purport spring can also be improved, substantially increasing the access times of spring. effect cure process makes yield strength and tensile strength improve, the phenomenon that percentage elongation and impact flexibility reduce, it is prevented that relaxing of spring, improves fatigue strength and service life.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described:
A kind of Technology for Heating Processing of spring, material is 65Mn, it is characterised in that its technique includes claimed below: first creep tempering, and temperature is at 200��400 DEG C, and the creep tempering time is about 30-50min;Heat again retention time of swirling flows is 2��6h, with slower speed 1-2min, spring is depressed into specified altitude, then slowly decontrols 1-2min, makes spring produce plastic deformation; Last 450-520 DEG C of age-hardening process, it is 32-56HRC that age-hardening processes rear spring hardness.
A kind of Technology for Heating Processing of the spring of the present invention, the hot prestressing of spring processes the stabilizing surface treatment as spring, the place of suppressing that heats can significantly reduce outside permanent deformation, the fatigue life of purport spring can also be improved, substantially increasing the access times of spring. effect cure process makes yield strength and tensile strength improve, the phenomenon that percentage elongation and impact flexibility reduce, it is prevented that relaxing of spring, improves fatigue strength and service life.
The preferred embodiment of the present invention described in detail above. Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to the design of the present invention without creative work. All technical staff in the art, all should in the protection domain being defined in the patent claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (1)
1. a Technology for Heating Processing for spring, material is 65Mn, it is characterised in that its technique includes claimed below: first creep tempering, and temperature is at 200��400 DEG C, and the creep tempering time is about 30-50min; Heat again retention time of swirling flows is 2��6h, with slower speed 1-2min, spring is depressed into specified altitude, then slowly decontrols 1-2min, makes spring produce plastic deformation; Last 450-520 DEG C of age-hardening process, it is 32-56HRC that age-hardening processes rear spring hardness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410719120.7A CN105648184A (en) | 2014-12-03 | 2014-12-03 | Heat treatment technology of springs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410719120.7A CN105648184A (en) | 2014-12-03 | 2014-12-03 | Heat treatment technology of springs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105648184A true CN105648184A (en) | 2016-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410719120.7A Pending CN105648184A (en) | 2014-12-03 | 2014-12-03 | Heat treatment technology of springs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105648184A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107354273A (en) * | 2017-07-05 | 2017-11-17 | 凌伯勇 | A kind of tempering method being adapted with quenching workpiece mechanical performance |
| CN115463994A (en) * | 2022-11-03 | 2022-12-13 | 广东神和新材料科技有限公司 | Manufacturing process of precise stainless steel spring wire for automobile |
-
2014
- 2014-12-03 CN CN201410719120.7A patent/CN105648184A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107354273A (en) * | 2017-07-05 | 2017-11-17 | 凌伯勇 | A kind of tempering method being adapted with quenching workpiece mechanical performance |
| CN115463994A (en) * | 2022-11-03 | 2022-12-13 | 广东神和新材料科技有限公司 | Manufacturing process of precise stainless steel spring wire for automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160608 |
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| WD01 | Invention patent application deemed withdrawn after publication |