Hypereutectoid tool steel and manufacturing method thereof

Abstract

The invention discloses a hypereutectoid tool steel and a manufacturing method thereof. Chemical components comprise, by weight percent, 0.90%-1.2% of C, 0.06%-0.40% of Si, 0.5%-0.95% of Mn, 0.10%-0.50% of Cr, not larger than 0.1% of Ti, not larger than 0.1% of V, not larger than 0.1% of Nb, not larger than 0.5% of Ni, 0.015%-0.06% of Al, not larger than 0.0002% of H, not larger than 0.015% of theimpurity element P, not larger than 0.010% of S and the balance Fe and inevitable impurities.

Description

technical field [0001] The invention relates to a hot-rolled tool steel plate and a manufacturing method thereof, in particular to a hypereutectoid hot-rolled coil and a manufacturing method thereof. Background technique [0002] In recent years, in order to improve the performance of steel products, the demand for high-quality special steels such as tool steels and cutting tool steels at home and abroad is increasing. According to statistics, foreign high-quality special steels account for 37% of the total steel consumption, and are affected by production conditions and prices. Restricted by other conditions, the use of domestic premium special steel is still in its infancy. Due to the high hardness of high-carbon alloy tool steel, the rolling production is difficult, and the process requirements are relatively high. In the past, my country's high-quality special steel mainly consisted of profiled wire and narrow strip steel with a width of less than 500mm, and there was no...

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Problems solved by technology

[0006] The paper "Research on the Influence of Heat Treatment Process on the Performance of T10 Tool Steel for Mechanical Maintenance" introduces a kind of strontium-containing T10 tool steel, which contains strontium components. It is smelted by intermediate frequency induction + electroslag remelting, and the production process of die casting is relatively high. The yield is low, and it is not suitable for converter smelting and hot rolling into coils

[0007] The steel types and production methods mentioned in the above documents and inventions all have certain defects, and cannot be fully adapted to the current needs of hypereutectoid tool steel

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