Cold rolling method of knife blank

Abstract

The invention provides a cold rolling method of a tool blank. The cold rolling method comprises the following steps: (S101) an edge end of a blank material is put in a roller inlet of a rolling mill for primary rolling, so that the thickness of the edge end of the blank material is reduced by 0.3-0.8 mm; and (S102) the edge end of the blank material is put in the roller inlet of the rolling mill for secondary rolling, so that the thickness of the edge end of the blank is reduced by 0.3-0.8 mm. The edge end of the blank material is firstly fed in the rolling mill for rolling; and the blank material is fed by the rolling mill. After the rolling is finished, the thickness of the blank material is trapezoidally distributed; the thickness of the edge end minimally satisfies subsequent machining demands of a tool; a tool sample is closer to the standard; and after two times of rolling, the strength and the hardness of the tool blank are increased, and the toughness plastic index of the tool blank is decreased, so that the strength of the tool blank as the tool can be guaranteed. The secondary rolling can achieve a flattening effect on the surface of the blank.

Description

technical field [0001] The invention relates to the technical field of tool processing, in particular to a cold rolling method for a tool blank. Background technique [0002] The existing processing method of the knife blank is as follows: using a belt hammer to forge the blank to make the blank form the prototype of the knife handle; The first blank is formed; then the blank is sliced ​​to form a knife blank. However, in the above technical solution, when the belt hammer forges the blade of the high-temperature blank, the forging is uneven, and the blade appears uneven due to forging. Moreover, in the forging process, the entire plane of the blank is processed, resulting in the same thickness of the processed blade, and the back of the blade cannot be distinguished from the blade. It can be seen that the existing knife blank processing method has the following problems: the blade body of the knife blank is uneven due to forging, resulting in a low processing pass rate of ...

AI Technical Summary

Problems solved by technology

However, in the above technical solution, when the belt hammer forges the blade body of the high-temperature blank, the forging is uneven, and the blade body appears uneven due to forging

Moreover, in the forging process, the entire plane of the blank is processed, resulting in the same thickness of the processed blade, and the back of the blade cannot be distinguished from the blade.

It can be seen that the existing knife blank processing method has the following problems: the blade body of the knife blank is uneven due to forging, resulting in a low qualified rate of knife blank processing; and the thickness of the entire knife blank is the same, and the back of the knife cannot be distinguished from the blade

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