Titanium-alloy-containing cast steel roller and production process thereof

Abstract

The invention discloses a titanium-alloy-containing cast steel roller and a production process thereof. The titanium-alloy-containing cast steel roller comprises the following chemical components of,in percentage by mass, 0.6%-1.2% of C, 0.2%-1.0% of Si, 0.5%-1.2% of Mn, 0%-0.03% of P, 0%-0.03% of S, 0.6%-2.0% of Cr, 0.60%-1.0% of Ni, 0.2%-0.6% of Mo, 0.2%-0.5% of Ti, and the balance Fe and inevitable impurities. According to the titanium-alloy-containing cast steel roller and the production process thereof, elements such as the Cr, the Ni, the Mo and the Ti can improve toughness, abrasion resistance and hardenability, and the Ti plays a role in refining grains and reducing enrichment of harmful aluminum oxide; TiN particles separated out of steel can remove the influence of nitrogen on the steel and preventing excessive growth of austenite grains in the roller heat treatment process, and early perfect recrystallization is ensured, so that the austenite structure is refined, and the performance of the roller is enhanced; TiC separated out of the steel has high microhardness, and wear-resistant particles are formed in a material, so that the wear resistance of the roller is furtherimproved; and meanwhile, the added content is proper, and the production cost is reduced while the performance of the roller is ensured.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a titanium-containing alloy cast steel roll and a production process thereof. Background technique [0002] The roll is a key and important tool in steel rolling, and its quality directly affects the working efficiency, steel passing capacity, rolling material quality and rolling cost of rolling steel. However, the usual alloy cast steel rolls are difficult to meet the above requirements. Chinese patent CN103614667A Disclosed is a production method of alloy steel rolls. Its high-S and high-alloyed components are difficult to ensure the problem of cracking during heat treatment. Chinese patent CN103436805A discloses a production method of alloy steel rolls. The preparation process is complicated and its composition It is well known that low content of B can improve the hardenability of steel grades, but high content can significantly increase the risk of quenching cracks. Chinese patent ...

AI Technical Summary

Problems solved by technology

[0002] The roll is a key and important tool when rolling steel, and its quality directly affects the working efficiency of rolling steel, the amount of steel passing through, the quality of the rolled material and the rolling cost. However, the usual alloy cast steel rolls are difficult to meet the above requirements. Chinese patent CN103614667A Disclosed is a production method for alloy steel rolls. Its high-S and high-alloyed components are difficult to ensure the problem of cracking during heat treatment. Chinese patent CN103436805A discloses a production method for alloy steel rolls. The preparation process is complicated and its composition It is well known that low content of B can improve the hardenability of steel grades, but high content can significantly increase the risk of quenching cracks. Chinese patent CN102146547B discloses an alloy steel roll and its production process. It adopts casting and forging And induction hardening process, there are disadvantages such as complex process and high manufacturing cost in the implementation process