High-strength spring steel and preparation method thereof

Abstract

The invention discloses high-strength spring steel containing the following chemical elementary components in percentage by mass: 1.0-1.3% of C, 0.6-0.9% of Si, 0.4-0.5% of Cu, 14.0-14.5% of Ni, 1.7-2.1% of Mn, 0.03-0.05% of Ce, 0.006-0.008% of Ti, 0.02-0.05% of Zn, 0.004-0.005% of Sn, 1.0-1.3% of Cr, less than or equal to 0.030% of P, less than or equal to 0.030 of S and the balance of Fe. The alloy material prepared from various raw materials such as Ni, Si, Mn and the like through setting a reasonable ratio and production process and reasonably setting the adding order has excellent comprehensive mechanical properties, particularly has ultrahigh strength, hardness, toughness, plasticity and fatigue resistance and also has corrosion resistance; part of waste iron is used as a raw material, so that the quality stability and uniformity of the alloy are improved; the high-strength spring steel is suitable for elastic parts.

Description

technical field [0001] The invention relates to the field of metal material preparation, in particular to a high-strength spring steel and a preparation method thereof. Background technique [0002] The development of alloy steel has a history of more than 100 years. So far, a variety of alloy steels have been applied in industry, mainly including the following types: quenched and tempered steel, spring steel, tool steel, high speed steel, die steel, high school Low-carbon alloy steel, etc., so far, although alloy steel technology has been greatly developed, there are still many problems, such as wear resistance, hardness, rust resistance, corrosion resistance, high and low temperature resistance, brittleness, toughness, Costs cannot be taken into account. In many cases, the production requirements cannot be met, and further improvements are needed to improve production efficiency, reduce costs, improve safety, provide guarantee for the development of high-tech, and provide ...

AI Technical Summary

Problems solved by technology

[0002] The development of alloy steel has a history of more than 100 years. So far, a variety of alloy steels have been applied in industry, mainly including the following types: quenched and tempered steel, spring steel, tool steel, high speed steel, die steel, high school Low-carbon alloy steel, etc., so far, although alloy steel technology has been greatly developed, there are still many problems, such as wear resistance, hardness, rust resistance, corrosion resistance, high and low temperature resistance, brittleness, toughness, Costs cannot be taken into account. In many cases, the production requirements cannot be met, and further improvements are needed to improve production efficiency, reduce costs, improve safety, provide guarantee for the development of high-tech, and provide impetus for social development. There are still many tasks to be done. difficult