CN104451080A - Treatment method of preventing loosening of spring - Google Patents
Treatment method of preventing loosening of spring Download PDFInfo
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- CN104451080A CN104451080A CN201410617041.5A CN201410617041A CN104451080A CN 104451080 A CN104451080 A CN 104451080A CN 201410617041 A CN201410617041 A CN 201410617041A CN 104451080 A CN104451080 A CN 104451080A
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- spring
- tempering
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- quenching
- heating
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Abstract
The invention provides a treatment method of preventing loosening of a spring. The method comprises the following steps: loosening after quenching and tempering, namely, pre-loading the spring, wherein the deformation exceeds the deformation which is possibly generated when the spring works; and then, heating under a condition that the temperature is 20 DEG C higher than the work temperature and insulating for 8-24 hours. The treatment method of preventing loosening of the spring provided by the invention can be used for preventing the loosening of the spring, so that the anti-fatigue performance of the spring is improved and the service life of the spring is prolonged.
Description
Technical field
The present invention relates to a kind for the treatment of process preventing relaxing of spring, belong to machinery manufacturing technology field.
Background technology
Spring works for a long time under external force, due to stress relaxation, can produce trace tension set or for viscous deformation, the particularly spring of hot operation, at high temperature stress relaxation phenomenon is even more serious, and the precision of spring is reduced, and this is unallowed to general precision spring, be the speed making relaxing of spring aging to accelerate, reduce the work-ing life of spring.
Summary of the invention
The invention provides a kind for the treatment of process preventing relaxing of spring, the above defect can be overcome.
For solving above technical problem, the invention provides following technical scheme: a kind for the treatment of process preventing relaxing of spring, comprises the steps: a, annealing and normalizing treatment: Spheroidizing Annealing and softening annealing process, hardness is at≤225HBS; B, quenching, temper: the Heating temperature of quench treatment, generally in 800+(30 ~ 50) DEG C; Heating coefficient a=0.5min/mm in salt bath furnace, the heating coefficient in air furnace is by 1.2 ~ 2min/mm; Prevent oxidation and decarbonization during air furnace heating, during shove charge, in spring inside diameter, penetrate shaft-like suspender, and level quench, prevent spiral workpiece deformation; When quenchant is selected, steel alloy uses oil quenching medium, uses water oil quenching; Select the tempering stove of band blower fan during temper, the hardness 45 ~ 50HRC of spring, tempering temperature is between 800 ~ 1000 DEG C; Water-cooled or air-cooled Cooling Mode is adopted after tempering; It is characterized in that: in quenching, carry out relaxation processes after tempering: to the pre-loaded lotus of spring, issuable deflection when making its deflection exceed spring works; Then heat under the condition higher than working temperature 20 DEG C, soaking time is 8 ~ 24h.
Further, heat under the condition higher than working temperature 20 DEG C, soaking time is 12 ~ 16h.
This treatment process preventing relaxing of spring that the present invention relates to, can prevent relaxing of spring, improves anti-fatigue performance and the work-ing life of spring.
Embodiment
Prevent a treatment process for relaxing of spring, comprise the steps: a, annealing and normalizing treatment: Spheroidizing Annealing and softening annealing process, hardness is at≤225HBS; B, quenching, temper: the Heating temperature of quench treatment, generally in 800+(30 ~ 50) DEG C; Heating coefficient a=0.5min/mm in salt bath furnace, the heating coefficient in air furnace is by 1.2 ~ 2min/mm; Prevent oxidation and decarbonization during air furnace heating, during shove charge, in spring inside diameter, penetrate shaft-like suspender, and level quench, prevent spiral workpiece deformation; When quenchant is selected, steel alloy uses oil quenching medium, uses water oil quenching; Select the tempering stove of band blower fan during temper, the hardness 45 ~ 50HRC of spring, tempering temperature is between 800 ~ 1000 DEG C; Water-cooled or air-cooled Cooling Mode is adopted after tempering; It is characterized in that: in quenching, carry out relaxation processes after tempering: to the pre-loaded lotus of spring, issuable deflection when making its deflection exceed spring works; Then heat under the condition higher than working temperature 20 DEG C, soaking time is 8 ~ 24h.
Further, heat under the condition higher than working temperature 20 DEG C, soaking time is 12 ~ 16h.
This treatment process preventing relaxing of spring that the present invention relates to, can prevent relaxing of spring, improves anti-fatigue performance and the work-ing life of spring.
Embodiment of the present invention does not form the restriction to the application's scope; within every spirit in the present invention's design and principle, any amendment that one of skill in the art can make, equivalent to replace and improvement etc. all should be included within protection scope of the present invention.
Claims (2)
1. prevent a treatment process for relaxing of spring, comprise the steps: a, annealing and normalizing treatment: Spheroidizing Annealing and softening annealing process, hardness is at≤225HBS; B, quenching, temper: the Heating temperature of quench treatment, generally in 800+(30 ~ 50) DEG C; Heating coefficient a=0.5min/mm in salt bath furnace, the heating coefficient in air furnace is by 1.2 ~ 2min/mm; Prevent oxidation and decarbonization during air furnace heating, during shove charge, in spring inside diameter, penetrate shaft-like suspender, and level quench, prevent spiral workpiece deformation; When quenchant is selected, steel alloy uses oil quenching medium, uses water oil quenching; Select the tempering stove of band blower fan during temper, the hardness 45 ~ 50HRC of spring, tempering temperature is between 800 ~ 1000 DEG C; Water-cooled or air-cooled Cooling Mode is adopted after tempering; It is characterized in that: in quenching, carry out relaxation processes after tempering: to the pre-loaded lotus of spring, issuable deflection when making its deflection exceed spring works; Then heat under the condition higher than working temperature 20 DEG C, soaking time is 8 ~ 24h.
2. a kind for the treatment of process preventing relaxing of spring according to claim 1, it is characterized in that: heat under the condition higher than working temperature 20 DEG C, soaking time is 12 ~ 16h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410617041.5A CN104451080A (en) | 2014-11-06 | 2014-11-06 | Treatment method of preventing loosening of spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410617041.5A CN104451080A (en) | 2014-11-06 | 2014-11-06 | Treatment method of preventing loosening of spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104451080A true CN104451080A (en) | 2015-03-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410617041.5A Pending CN104451080A (en) | 2014-11-06 | 2014-11-06 | Treatment method of preventing loosening of spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104451080A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105568131A (en) * | 2015-12-31 | 2016-05-11 | 安徽红桥金属制造有限公司 | Corrosion resistant spring steel and heat treatment process |
| CN111349773A (en) * | 2020-02-24 | 2020-06-30 | 无锡市东亭新强弹簧厂 | Spring heat treatment process |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1900334A (en) * | 2005-07-19 | 2007-01-24 | 上海核工碟形弹簧制造有限公司 | High temperature resistant anti-corrosion disc-shaped spring |
| CN102888500A (en) * | 2012-10-26 | 2013-01-23 | 国家电网公司 | Heat treatment process of thermoforming spring |
-
2014
- 2014-11-06 CN CN201410617041.5A patent/CN104451080A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1900334A (en) * | 2005-07-19 | 2007-01-24 | 上海核工碟形弹簧制造有限公司 | High temperature resistant anti-corrosion disc-shaped spring |
| CN102888500A (en) * | 2012-10-26 | 2013-01-23 | 国家电网公司 | Heat treatment process of thermoforming spring |
Non-Patent Citations (1)
| Title |
|---|
| 中国机械工程学会热处理学会 编: "《热处理手册 第2卷 典型零件热处理 第4版》", 31 January 2008, 机械工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105568131A (en) * | 2015-12-31 | 2016-05-11 | 安徽红桥金属制造有限公司 | Corrosion resistant spring steel and heat treatment process |
| CN111349773A (en) * | 2020-02-24 | 2020-06-30 | 无锡市东亭新强弹簧厂 | Spring heat treatment process |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |