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Production technology of spring steel alloy

A production process and spring steel technology, applied in the field of steel alloys, can solve the problems of increased heat treatment costs, decreased plasticity and toughness, personal injury, etc., and achieve the effect of reducing crack growth rate, reducing formation and spreading, and improving corrosion resistance.

Active Publication Date: 2016-03-09
ANHUI CHUJIANG SPECIAL STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when producing round steel, reticulated ferrite is often precipitated first under air-cooling conditions, resulting in a serious decrease in plasticity and toughness. The cold working process is easy to break, which is easy to cause personal injury, and hot working increases a lot of heat treatment costs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] S1. Weigh C0.42%, Si1.69%, Mn0.18%, P0.004%, S0.007%, Cu0.2%, Ni0.33%, Cr1.16%, V0.05%, Ti0 .5%, Al0.027% and unavoidable impurities are put into a vacuum smelting furnace for smelting, and then heated and forged to obtain a spring steel alloy billet;

[0052] S2, placing the spring steel alloy parison obtained in step S1 on the drilling machine and the rolling earphone to perform drilling and ear rolling operations to obtain the spring steel alloy profile;

[0053] S3, performing a quenching process on the spring steel alloy profile obtained in step S2 to obtain a spring steel alloy material, and performing an oil cooling operation after quenching;

[0054] S4, subjecting the spring steel alloy material obtained in step S3 to a medium temperature tempering treatment, performing a shot peening process after the medium temperature tempering treatment, and then performing a pre-pressing operation to obtain a spring steel alloy primary product;

[0055] S5. After annealin...

Embodiment 2

[0063] S1. Weigh C0.5%, Si1.70%, Mn0.10%, P0.004%, S0.008%, Cu0.21%, Ni0.41%, Cr1.22%, V0.12%, Ti0 .55%, Al0.027% and unavoidable impurities are put into a vacuum smelting furnace for smelting, and then heated and forged to obtain a spring steel alloy billet;

[0064] S2, placing the spring steel alloy parison obtained in step S1 on the drilling machine and the rolling earphone to perform drilling and ear rolling operations to obtain the spring steel alloy profile;

[0065] S3, performing a quenching process on the spring steel alloy profile obtained in step S2 to obtain a spring steel alloy material, and performing an oil cooling operation after quenching;

[0066] S4, subjecting the spring steel alloy material obtained in step S3 to a medium temperature tempering treatment, performing a shot peening process after the medium temperature tempering treatment, and then performing a pre-pressing operation to obtain a spring steel alloy primary product;

[0067] S5. After anneali...

Embodiment 3

[0075] S1. Weigh C0.35%, Si1.10%, Mn0.10%, P0.004%, S0.005%, Cu0.18%, Ni0.28%, Cr1.09%, V0.04%, Ti0 .4%, Al0.027% and unavoidable impurities are put into a vacuum smelting furnace for smelting, and then heated and forged to obtain a spring steel alloy billet;

[0076] S2, placing the spring steel alloy parison obtained in step S1 on the drilling machine and the rolling earphone to perform drilling and ear rolling operations to obtain the spring steel alloy profile;

[0077] S3, performing a quenching process on the spring steel alloy profile obtained in step S2 to obtain a spring steel alloy material, and performing an oil cooling operation after quenching;

[0078] S4, subjecting the spring steel alloy material obtained in step S3 to a medium temperature tempering treatment, performing a shot peening process after the medium temperature tempering treatment, and then performing a pre-pressing operation to obtain a spring steel alloy primary product;

[0079] S5. After anneali...

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Abstract

The invention discloses a production technology of a spring steel alloy. The spring steel alloy is prepared from the following chemical components by weight percent: 0.35-0.5% of C, 1.10-1.70% of Si, 0.10-0.20% of Mn, 0.004% of less of P, 0.005-0.008% of S, 0.18-0.21% of Cu, 0.28-0.41% of Ni, 1.09-1.22% of Cr, 0.04-0.12% of V, 0.4-0.55% of Ti, 0.027% of less of Al and unavoidable impurities. According to the production technology, alloying elements such as Ni, Cr and Cu are added into steel, so that the amorphous components in rust in the corrosion environment are increased, the C1 invasion can be prevented, and the etch pits are prevented from forming and spreading; hydrogen is generated in a placing corrosion reaction, so that the crack propagation rate is effectively decreased, and the corrosion resistance is improved.

Description

technical field [0001] The invention relates to the technical field of steel alloys, in particular to a production process of spring steel alloys. Background technique [0002] Spring steel 60Si2MnA has low content of alloying elements, low decarburization tendency, good tempering stability, good thermal processing performance, low cost, and excellent performance after heat treatment. It is widely used in industries such as automobiles, railways and construction machinery. However, when producing round steel, reticulated ferrite is often precipitated first under air-cooling conditions, resulting in a serious decrease in plasticity and toughness. The cold working process is easy to break, which is easy to cause personal injury, and hot working increases a lot of heat treatment costs. [0003] The quality of alloy spring steel depends to a large extent on the smelting process, including the chemical composition of the steel, the cleanliness of molten steel (gas, harmful elemen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/16C22C38/08C22C38/12C22C38/14C22C38/18C22C33/04C21D1/18C21D1/26C21D8/00C21D7/06
CPCC21D1/18C21D1/26C21D7/06C21D8/005C22C33/04C22C38/02C22C38/04C22C38/08C22C38/12C22C38/14C22C38/16C22C38/18
Inventor 唐时葵王军圣祥
Owner ANHUI CHUJIANG SPECIAL STEEL CO LTD
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