Forging method of battery pole piece roll blank

Abstract

The invention discloses a method for forging a battery pole piece roll blank. The method comprises the following steps that (1) the roll blank is drawing out until the diameter is smaller than the size of a roll body technological diameter; (2) shoulder cutting is carried out on the drawn out roll blank, and roll necks at the two ends are forged after the shoulders are cut; (3) local upsetting is carried out on a roll body to enable the roll body diameter to be larger than the roll body technological diameter; (4) the roll body is drawn out to the technological diameter, and the roll necks are trimmed to technological sizes. According to the method, the specific value between the length and the diameter during shoulder cutting is enlarged, the effect of reducing shoulder cutting excess materials or even generating no excess material is achieved, meanwhile, due to the fact upsetting is carried out after shoulder cutting, the end faces at the joints of the roll body and the roll necks are flushed, the mass of hidden materials is reduced, the plier handle pressing procedure before upsetting is omitted, and forging times are reduced. The method for forging the battery pole piece roll blank reduces raw material waste and energy waste, and saves production cost.

Description

technical field [0001] The invention relates to a forging process of a shaft forging, in particular to a forging method of a battery pole piece roll blank. Background technique [0002] The rolls used for rolling battery pole pieces are of special roll shape, mostly with large diameter and short length of the roll body, small diameter and short length of the roll neck, and the diameter difference between the roll body and the roll neck reaches more than 400mm, commonly known as "short and thick roll". It is very difficult to forge the roll billet: First, the roll necks at both ends cannot be forged. The conventional forging methods are clamping, upsetting, elongating, shoulder cutting, and forming. This method requires more raw materials, and the roll body There are many "reserved materials" at the joint with the roll neck, all of which lead to waste of raw materials; second, due to the large diameter of the roll body, it is necessary to adopt an upsetting method to ensure t...

AI Technical Summary

Problems solved by technology

[0006] To sum up, according to the conventional forging method, a large amount of raw materials are wasted, the number of forging fires is increased, energy is wasted, and the production cost of the product is increased.

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