CN105525080A - Heat treatment technology for 60Si2CrVAT cold coiled springs - Google Patents
Heat treatment technology for 60Si2CrVAT cold coiled springs Download PDFInfo
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- CN105525080A CN105525080A CN201410517150.XA CN201410517150A CN105525080A CN 105525080 A CN105525080 A CN 105525080A CN 201410517150 A CN201410517150 A CN 201410517150A CN 105525080 A CN105525080 A CN 105525080A
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Abstract
The invention discloses a heat treatment technology for 60Si2CrVAT cold coiled springs. The heat treatment technology is characterized in that quenching is performed at the temperature of 910 DEG C, the quenching temperature holding time is 35 min, a quenching medium adopts oil cooling, the tempering temperature is 400-530 DEG C, and the tempering time is 60 min. The optimum technology is as follows: quenching is performed at the temperature of 910 DEG C, the quenching temperature holding time is 35 min, the quenching medium adopts oil cooling, the tempering temperature is 470 DEG C, and the tempering time is 60 min.
Description
Technical field
The present invention relates to the treatment process of 60Si2CrVAT cold coiling spring, particularly tempering temperature is on the impact of 60Si2CrVAT cold coiling spring mechanical property.
Background technology
60Si2CrVAT spring steel traditional technology is oil-tempered, has bibliographical information, and tempering temperature affects the topmost factor of such spring steel mechanical property.Therefore be necessary to study different tempering temperature to this spring steel Effect on Mechanical Properties rule.
Summary of the invention
The technical problem to be solved in the present invention is: research tempering temperature on the impact of 60Si2CrVAT cold coiling spring mechanical property, thus obtains best tempering temperature.
Technical scheme of the present invention is: a kind of thermal treatment process of 60Si2CrVAT cold coiling spring, quenches at 910 DEG C, and Quenching Soaking Time is 35min, and quenchant adopts oil cooling, and tempering temperature is 400-530 DEG C, and tempering time is 60min.
Optimised process is: quench at 910 DEG C, and Quenching Soaking Time is 35min, and quenchant adopts oil cooling, and tempering temperature is 470 DEG C, and tempering time is 60min.
Beneficial effect of the present invention: under 910 DEG C of quenching temperatures, its unit elongation rises trend afterwards in first to fall; And the change more complicated of relative reduction in area, but the relative reduction in area when 470 DEG C of tempering is the highest; Along with the rising of tempering temperature, hardness, yield strength and tensile strength all obviously reduce.For cold coiling spring steel wire, after requiring should to ensure after thermal treatment to roll, there is good intensity, possesses good roll-forming performance again, this just needs good plasticity, there is test-results known, when tempering temperature is 470 DEG C, both there is good plasticity, there is again good plastic property, the requirement of its tempering process can be met.
Accompanying drawing explanation
Fig. 1 is thermal treatment process diagram.
Embodiment
With the strip 60Si2CrVAT spring wire sample that the diameter that steel is the production of certain company is Ф 9.Adopt TASMAN entirely to compose direct-reading spark spectrum instrument and carry out chemical composition analysis to it, its chemical composition is as following table:
The optimal quenching temperature being checked in this spring steel by document is 910 DEG C, and the scope of the tempering temperature chosen is between 400 DEG C-530 DEG C.Concrete thermal treatment process is shown in Fig. 1.
After thermal treatment, sample is sized into standard tensile specimen, then on tensile testing machine, carry out tension test, with Linear cut, the sample after thermal treatment is cut into metallographic specimen in addition, after grinding polishing, measure the hardness value often organized under as-heat-treated condition with rockwell hardness measurement instrument.The every mechanical property recorded is shown in Table 2.
As can be seen from Table 2, under 910 DEG C of quenching temperatures, its unit elongation rises trend afterwards in first to fall; And the change more complicated of relative reduction in area, but the relative reduction in area when 470 DEG C of tempering is the highest; Along with the rising of tempering temperature, hardness, yield strength and tensile strength all obviously reduce.For cold coiling spring steel wire, after requiring should to ensure after thermal treatment to roll, there is good intensity, possesses good roll-forming performance again, this just needs good plasticity, there is test-results known, when tempering temperature is 470 DEG C, both there is good plasticity, there is again good plastic property, the requirement of its tempering process can be met.
Claims (2)
1. a thermal treatment process for 60Si2CrVAT cold coiling spring, is characterized in that: quench at 910 DEG C, and Quenching Soaking Time is 35min, and quenchant adopts oil cooling, and tempering temperature is 400-530 DEG C, and tempering time is 60min.
2. the thermal treatment process of a kind of 60Si2CrVAT cold coiling spring according to claim 1, it is characterized in that: optimised process is: quench at 910 DEG C, Quenching Soaking Time is 35min, and quenchant adopts oil cooling, tempering temperature is 470 DEG C, and tempering time is 60min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410517150.XA CN105525080A (en) | 2014-09-30 | 2014-09-30 | Heat treatment technology for 60Si2CrVAT cold coiled springs |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410517150.XA CN105525080A (en) | 2014-09-30 | 2014-09-30 | Heat treatment technology for 60Si2CrVAT cold coiled springs |
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| CN105525080A true CN105525080A (en) | 2016-04-27 |
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| CN201410517150.XA Pending CN105525080A (en) | 2014-09-30 | 2014-09-30 | Heat treatment technology for 60Si2CrVAT cold coiled springs |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107319825A (en) * | 2017-07-18 | 2017-11-07 | 浙江安吉美佳琪家居用品有限公司 | Strengthen the manufacture method of the mattress of sleep quality |
| CN107319822A (en) * | 2017-07-18 | 2017-11-07 | 浙江安吉美佳琪家居用品有限公司 | The manufacture method of long-lived mattress |
| CN107641695A (en) * | 2017-09-21 | 2018-01-30 | 江苏省沙钢钢铁研究院有限公司 | A kind of 55Cr3 Heat-Treatments of Steel method |
| CN110760656A (en) * | 2019-09-18 | 2020-02-07 | 南京钢铁股份有限公司 | Heat treatment method for producing high-strength SiCrV spring steel |
-
2014
- 2014-09-30 CN CN201410517150.XA patent/CN105525080A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107319825A (en) * | 2017-07-18 | 2017-11-07 | 浙江安吉美佳琪家居用品有限公司 | Strengthen the manufacture method of the mattress of sleep quality |
| CN107319822A (en) * | 2017-07-18 | 2017-11-07 | 浙江安吉美佳琪家居用品有限公司 | The manufacture method of long-lived mattress |
| CN107641695A (en) * | 2017-09-21 | 2018-01-30 | 江苏省沙钢钢铁研究院有限公司 | A kind of 55Cr3 Heat-Treatments of Steel method |
| CN110760656A (en) * | 2019-09-18 | 2020-02-07 | 南京钢铁股份有限公司 | Heat treatment method for producing high-strength SiCrV spring steel |
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Legal Events
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Application publication date: 20160427 |
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| WD01 | Invention patent application deemed withdrawn after publication |