Small abnormal-shape combined forging and ring-rolling process

Abstract

The invention discloses a small abnormal-shape combined forging and ring-rolling process which comprises the following process steps of inspecting a blank, cutting and grinding a rounded corner, upsetting and punching, conducting reversed ring-rolling, conducting ring-rolling on an abnormal shape, reeling, cutting in a back-to-back manner, inspecting the process, treating thermally, inspecting hardness, testing performances, machining, and finally inspecting, marking and packaging. The small abnormal-shape combined forging and ring-rolling process has the beneficial effects that the small abnormal-shape combined forging and ring-rolling process is provided, the quantity of machining is small, the stock utilization is high, the production efficiency is high, the streamline of a material can be prevented from being damaged, the product percent of pass is high, and the process can also be used to manufacture a small abnormal-shaped forged ring.

Description

technical field [0001] The invention relates to the field of precision forging, in particular to a small special-shaped combined forging and ring rolling process. Background technique [0002] In the traditional joint forging process, for small size (diameter less than 500mm) forging rings are mostly manufactured by hammer punching, preforming and vertical reaming machine rolling and expanding, for large size (diameter greater than 800mm) Forged rings are directly manufactured by rectangular section rolling, but for medium-sized (diameter 500-800mm) forged rings, they are rolled by rectangular section rolling, and then machined to cut off a part of the material to achieve the design. Therefore, using the traditional forging ring rolling process to manufacture forged rings is likely to cause problems such as low material utilization, large machining volume, and low machining efficiency, resulting in waste, and will also reduce the mechanical properties of the material, such a...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention lies in that, in view of the large amount of machining, low material utilization rate, low production efficiency, easy damage to the material streamline, high scrap rate and inability to be used in the traditional combined forging and ring rolling process in the prior art For the above-mentioned defects such as manufacturing special-shaped forging rings, a small special-shaped forging ring that can be used to manufacture small special-shaped forging rings can be provided with a small amount of machining, high material utilization rate, high production efficiency, avoiding damage to material streamlines, and high product qualification rate. combined forging ring rolling process

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