Quenching roll

45# quenched hard surface roller is a new type of roller with higher performance ratio recently developed. The surface of the roller body is quenched by medium frequency, and the surface of the roller has a hard surface layer with a depth of 3-5mm, and the surface is chrome-plated or sprayed. After tungsten carbide, the roller is more wear-resistant, more durable, longer service life and longer replacement cycle.

There are only three ways for the cylinder body: (1) 45# coiled plate welding; (2) 45# hot extrusion seamless pipe; (3) 45# cylinder body forging. Due to the low cost and unlimited diameter of 45# coil welding, our company has successfully overcome the welding seam problem. After quenching, the hardness is uniform, and the hardness difference between the welding seam and the body is controlled at HRC 2 degrees. The market prospect of adopting 45# quenched hard-faced rolls is promising. Yatai Machinery's 45# quenching + textured chrome plating, 45# quenching + tungsten carbide rolls are leading in technology in China, with a domestic market share of d1, and a major domestic steel cold rolling project All have participated and won the praise of the market and the trust of customers!

1. 45# coil welding has the lowest cost and unlimited diameter; welding, welding wire and heat treatment are the keys.

2. For 45# hot extruded seamless pipe, the maximum diameter can be increased to D1250mm, the rolling ratio can reach more than 3, the performance uniformity is good, there is no weld defect, and the cost is in the middle;

3. The material performance of 45# cylinder forgings is the best, and there is no welding seam. This kind of quenching roller is used in key parts, which has a long service life and no need to worry about quality problems, but the cost is high.

For 45# quenched hard surface roll, the general quenching hardness requires HRC48-52, and some customers need to reach HS70+-3; the quenching depth is 3-5mm. 45# quenched hard surface roller, the surface is textured with chrome plating or sprayed with tungsten carbide, and the tension roller and deviation correction roller are generally mostly sprayed with tungsten carbide. 45# quenched hard surface roller is widely used in galvanizing line, continuous withdrawal line, high-strength steel and other cold-rolled sheet production lines.