A kind of preparation method of liner plate for rolling mill

Abstract

Disclosed is a preparation method of liners for rolling mills. According to the preparation method, after the process of processing 45# steel plates according to drawings, size of working surfaces ofcontact moving parts of the liners is reduced by 1mm and then further processing is carried out; alloy powder is prepared from, by mass percent, 0.1-0.13% of C, 1.0-1.5% of Si, 14-16% of Cr, 1.6-1.7%of Co, 1.2-1.6% of Mn and the balance being Fe; every two processed liners of the same dimension are combined by the fixing way of keeping non-working surfaces of every two liners contacting; the alloy metal powder is spread in advance, and is subjected to metallurgical reaction with the basic metal of the liners through high-powder semi-conductor laser high-energy optical bean scanning, and thena reinforced alloy layer is formed on the working surface of each liner; finally, the reinforced alloy layer is subjected to finish machining through a surface grinder. The preparation method needs simple process and causes no pollution; the reinforced liners prepared by the method have the advantages of long service life and low cost.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a preparation method of a liner plate for a rolling mill. Background technique [0002] During the working process of the rolling mill, the bearing capacity of the whole rolling mill is very large, and during the process of rolling steel plates by the rolling mill, the moving parts in the rolling mill wear very large on the fixed lining plate on the rolling mill archway. Due to the poor wear resistance of conventional liners, they are frequently replaced in actual use, which increases downtime and enterprise costs. Looking for a liner for rolling mills with more wear resistance, good performance, and low price and its preparation method is of great importance for improving the production of rolling mills in iron and steel enterprises. Benefits, reducing downtime loss is of great significance. [0003] In recent years, in order to improve the service life of rolling...

AI Technical Summary

Problems solved by technology

However, in actual use, it is found that although the life of the rolling mill liner has been improved after the improvement, the cost is high, the cost performance is low, the ideal service life has not been reached, and the production efficiency and reliability of the rolling mill cannot be guaranteed.

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