High-alloy tool steel plate and production method thereof

Abstract

The invention discloses a high-alloy tool steel plate and a production method thereof. The steel plate is prepared from the chemical components in percentage by mass: 0.5 to 0.6 percent of C, 0.15 to0.35 percent of Si, less than or equal to 0.025 percent of P, less than or equal to 0.025 percent of S, 1.5 to 1.8 percent of Mn, 0.25 to 0.35 percent of Mo, 0.07 to 0.12 percent of V, and the balanceFe and inevitable impurities. The production method comprises the processes of heating, rolling and heat-treating. According to the high-alloy tool steel plate and the production method thereof provided by the invention, by adopting the composition design without Cr and Ni adding and with low Mo, and through optimizing the heat treatment process, the performance of the steel plate is ensured, theimpact toughness is improved, and a greater benefit is brought for the manufacturing and using departments; and the produced high-alloy tool steel plate has favorable mechanical property and processability, has an excellent pressure casting performance, and meets the production needs of large die molds requiring high hardness such as pressure casting dies, supporting tools and die holders.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a high-alloy tool steel plate and a production method thereof. Background technique [0002] my country's alloy tool and mold industry has developed rapidly, and its total output has increased significantly. The total output of domestic molds is second only to the United States, and has leapt to the second place in the world, becoming a veritable mold powerhouse. my country occupies a relatively large advantage in the international die-casting trade market with a very obvious price-performance ratio. The future development prospects of my country's die-casting industry are very broad. [0003] Although my country's tool steel has made major breakthroughs during the "Eleventh Five-Year Plan" period. However, its international reputation is still low. Although the output is increasing, most of the die-casting molds are only for domestic demand, especially the contra...

AI Technical Summary

Problems solved by technology

However, its international reputation is still at the bottom. Although the output is increasing, most of the die-casting molds are only for domestic demand, especially the contradiction between process cost and performance is gradually deepening.

Due to technical constraints, it is difficult to break through in quality. At the same time, some large-scale demand enterprises in China also frequently extend olive branches to foreign die-casting mold enterprises. The serious trade deficit makes it difficult for domestic die-casting enterprises.

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