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High-tenacity alloy spring steel

A spring steel, high-toughness technology, applied in the field of alloys, can solve the problem of brittle fracture of spring steel

Inactive Publication Date: 2014-03-19
俞政
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current spring steel is prone to brittle fracture under extremely harsh conditions, and a larger lifting degree is needed to meet the needs of modern industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1 A high-toughness alloy spring steel, the weight percentage of each element added is (wt%): the percentage of carbon is 0.5-0.7; the percentage of silicon is 0.12-0.18; the percentage of molybdenum is 1.36-1.56; The percentage is 1.15-1.18; the percentage of chromium is 0.19-0.22; the impurity is less than 0.1; the rest is all iron, and the spring steel is fed, heated, formed, quenched with waste heat, tempered at medium temperature, and finally formed into a product.

Embodiment 2

[0012] Embodiment 2 A high-toughness alloy spring steel, the weight percentage of the added elements is (wt%): the percentage of carbon is 0.55-0.65; the percentage of silicon is 0.14-0.17; the percentage of molybdenum is 1.37-1.49; The percentage of chromium is 1.16-1.17; the percentage of chromium is 0.19-0.21; its impurities are less than 0.1; the balance is iron, and the temperature of the medium temperature tempering is controlled between 400 degrees and 450 degrees.

Embodiment 3

[0013] Embodiment 3 A high-toughness alloy spring steel, the weight percentage of the added elements is (wt%): the percentage of carbon is 0.55-0.58; the percentage of silicon is 0.14-0.16; the percentage of molybdenum is 1.39-1.41; The percentage of chromium is 1.17; the percentage of chromium is 0.20; its impurity is less than 0.1; the balance part is iron, and the temperature of the medium temperature tempering is controlled at 430 degrees.

[0014] The high-toughness alloy spring steel has good elasticity and is suitable for normal work in a load environment. It has a high yield strength for the spring material and has a long life, and will not appear under extremely harsh conditions. Brittle problem. Moreover, it is cost-effective and suitable for large-scale promotion and use in the field of industrial manufacturing.

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PUM

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Abstract

The invention discloses high-tenacity alloy spring steel. The high-tenacity alloy spring steel comprises the following added elements in percentage by weight (wt%): 0.5wt%-0.7wt% of carbon, 0.12wt%-0.18wt% of silicon, 1.36wt%-1.56wt% of molybdenum, 1.15wt%-1.18wt% of vanadium, 0.19wt%-0.22wt% of chromium, less than 0.1wt% of impurities, and the balance of iron. The spring steel is subjected to material-passing, heating, forming, waste heat quenching and medium-temperature tempering and then forming. The high-tenacity alloy spring steel is good in elasticity, is suitable for normally working under a load environment, has high yield strength for preparing a spring material and has long service life, and a brittle failure problem does not appear under an extremely bad condition.

Description

technical field [0001] The invention relates to an alloy, especially a high-toughness alloy spring steel. Background technique [0002] Alloy steel has a history of more than one hundred years, and the use of alloy steel in industry was about the second half of the 19th century. There are many kinds of alloy steel, spring steel is a kind of alloy steel, and spring steel refers to the steel specially used to manufacture springs and elastic elements due to its elasticity in the quenched and tempered state. The elasticity of steel depends on its ability to deform elastically, that is, within a specified range, the ability to deform elastically allows it to withstand a certain load without permanent deformation after the load is removed. [0003] Spring steel should have excellent comprehensive properties, such as mechanical properties (especially elastic limit, strength limit, yield ratio), anti-elasticity reduction performance (that is, anti-elasticity reduction performance, ...

Claims

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Application Information

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IPC IPC(8): C22C38/24C21D1/18C21D9/02
Inventor 俞政
Owner 俞政