High-carbon martensitic stainless steel for mill guide roller and heat treatment method of mill guide roller

Abstract

The invention discloses high-carbon martensitic stainless steel for a mill guide roller and a heat treatment method of the mill guide roller. The high-carbon martensitic stainless steel is prepared from the following components according to mass percent: 1.3% to 1.6% of C, 18% to 22% of Cr, 0.5% to 0.8% of Ni, 0.2% to 0.3% of V, 1.0% to 1.3% of Si, 0.4% to 0.8% of Mn and 71% to 80% of Fe. The invention further discloses the heat treatment method of the mill guide roller. The heat treatment method is characterized in that the mill guide roller is prepared from the high-carbon martensitic stainless steel, and the heat treatment method comprises the following steps of annealing treatment, quenching treatment and low-temperature tempering treatment. According to the high-carbon martensitic stainless steel and the heat treatment method, the toughness, wear resistance and corrosion resistance of the high-carbon martensitic stainless steel can be increased, so that the service life of the prepared mill guide roller is greatly prolonged.

Description

technical field

[0001] The invention belongs to the field of preparation and application of novel materials, and in particular relates to a high-carbon martensitic stainless steel for rolling mill guide rolls and a heat treatment method for rolling mill guide rolls. Background technique

[0002] The guide roller is a part that causes the plastic deformation of the rolled steel piece during the rolling process of the section steel. It mainly bears the dynamic and static load during rolling, and the wear of the combination of rolling and sliding.

[0003] Because the guide roller works in a high temperature environment for a long time and bears the impact of intense heat and chill, the service life of the guide roller is short, the consumption is large, and the replacement is frequent, and it has become one of the bottlenecks restricting steel production. The roller materials are alloy carbon steel and cast iron, which have poor wear resistance and low service life. At present...