Steel billet feeding cylinder and the method of making and repairing it

Abstract

The present invention is the manufacture and repair of roller for conveying steel billet. The roller consists of basal body of cast steel or cast iron and roller ring, which is made of WC is braze welded onto the basal body and has hole. The manufacture and repair process includes machining the basal body, cleaning, and braze welding the WC roller ring to the basal body. Owing to the high hardness, especially the high red hardness of the roller ring, the roller has long service life, 10-15 times that of cast steel and cast iron ones. The roller is suitable for use in conveying steel billet in rolling mill and steel plant.

Description

technical field

[0001] The invention relates to a roller for conveying steel slabs and its manufacturing and repairing methods, in particular to a roller for conveying steel slabs composed of a matrix and a tungsten carbide roller ring, which belongs to the technical field of conveying devices. Background technique

[0002] The material of the rollers for conveying billets used in existing rolling mills and continuous casting machines in steelmaking plants is cast steel or cast iron, which is an integral structure, and the hardness of the whole roller body is the same, which brings a lot of inconvenience to the use of conveying rollers. On the one hand, due to the different positions of the rollers, the degree of wear is also different. The hardness of the suitable roller body should be different. The parts that are easy to wear should have high hardness, and the hardness of the parts that are not worn can be reduced. The rollers are low in hardness,...

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