High-speed steel plate and production method thereof

Abstract

The invention discloses a high-speed steel plate and a production method thereof. The steel plate comprises the following chemical components of, in percentage by mass, 1.4%-1.6% of C, 0.35%-0.55% ofSi, less than or equal to 0.025% of P, less than or equal to 0.025% of S, 0.3%-1.0% of Mn, 3.1%-3.5% of V, 0.020%-0.035% of N, and the balance Fe and inevitable impurities. The production method comprises rolling and heat treatment procedures. According to the high speed steel plate, C-V-N high-alloy element composite strengthening is adopted, the performance of the steel plate is ensured and theimpact toughness is improved through an optimized heat treatment process, good strong toughness matching is obtained, and the high-speed steel plate can replace 60 MnSiCr4 and 90MnCrV 8; and the high-speed steel plate is good in mechanical property and processing performance, excellent in die casting performance and capable of meeting the requirements of high-hardness large-scale dies for die-casting dies, supporting tools and die frames.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a high-speed 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. Such achievements are mainly due to the fact that our country has a very obvious price-to-performance ratio in the international die-casting trade market by virtue of its uniquely endowed broad market and relatively low-cost resources and labor advantages. According to the situation, the future of my country's die-casting industry will The development prospect is very broad. [0003] Although my country's tool steel has made a major breakthrough. However, its international reputation is still at the bottom. Ev...

AI Technical Summary

Problems solved by technology

However, its international reputation is still at the bottom. Even though 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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