Manufacture method of cold-rolled roller

Abstract

The invention discloses a manufacture method of a cold-rolled roller, which includes the following steps of: 1 preprocessing of roller blanks, 2 preliminary forming of the roller blanks, 3 forging of the roller blanks, 4 thermal treatment of the roller blanks and 5 machining of the roller blanks. The manufacture method 'changes passive removal to active control', does not adopt passive removal mode but researches the mechanism of forming and growing of carbides, controls the carbides after the carbides are formed but no grow up during forging, leads the carbides to constantly maintain in an acceptable level range, and therefore many links in a later segment are reduced, the purpose is achieved and energy consumption is reduced. The effect of the manufacture method can reach above 97%.

Description

technical field [0001] The invention relates to a method for manufacturing a roll, in particular to a method for manufacturing a cold-rolled roll. Background technique [0002] Cold rolling rolls (including work rolls and backup rolls) used in the metallurgical manufacturing industry are major consumable tools and indispensable tools for the metallurgical industry. The products produced by using rolls involve automobiles, home appliances, electronics, petrochemicals, machinery and many other key industries of the national economy. [0003] The structure of the rolling mill is as figure 1 As shown, it includes a rolling mill stand 1, a work roll 2, and a back-up roll 3. A pair of work rolls 2 and a pair of back-up rolls 3 are arranged in the rolling mill stand 1. The back-up roll 3 is connected to the rolling mill stand 1 through a bearing bush 4, and the bearing bush 4 It is fixedly connected with the rolling mill frame 1 by pressing down the screw 5; when working, the wor...

AI Technical Summary

Problems solved by technology

[0014] 2. Reduce the wear resistance of the roll; although a certain level of carbide can increase the wear resistance of the roll, but greater than this level, the wear resistance will decrease

[0035] 3. Due to the "heredity" of carbides, some large carbides are inherited in this kind of work process. Even if this work is carried out repeatedly, the goal cannot be achieved

[0036] Therefore, the method of elimination is used to reduce the network carbide. Although the elimination process is repeated, the target is still not achieved, and the roller is scrapped. According to statistics, only 75% of this method achieves the effect, which greatly increases the cost of the enterprise. manufacturing cost

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