A Precision Forming Process for Large-Sized Flat Parts with One-Side Complexity

Abstract

The invention discloses a precision forming process for single-face complicated large-size flat parts. The process comprises the following steps of blanking, heating, upsetting, punching, bearizing, sectional die forging forming, reshaping, side cutting, heat treatment and machining. According to the step of sectional die forging forming, a single-face complicated large-size flat forge piece is divided into a plurality of portions according to a certain angle, and the portions are subjected to die forging forming sequentially. According to the step of reshaping, an integral die is used for reshaping the forge piece subjected to sectional die forging forming, so that the overall quality of the forge piece is improved. According to the precision forming process for single-face complicated large-size flat parts, materials are small in deformation resistance and are easy to form, and large parts can be formed by utilization of existing small tonnage equipment of an enterprise; and the precision forming process for single-face complicated large-size flat parts is applicable to die forging batch production of large-size flat parts with each single face provided with complicated shapes, and particularly applicable to batch production of brake-disc-like forge pieces of high-speed rails, urban rails and the like.

Description

technical field [0001] The invention belongs to the technical method field of forging and forming, and in particular relates to a precision forming process of single-sided complex large-size flat parts. Background technique [0002] Most of the large-size flat parts are key parts of major transportation, machinery and manufacturing equipment. The common manufacturing method is free forging with large-tonnage equipment. The dimensional accuracy of the product is difficult to guarantee, and high-quality products must be obtained through subsequent mechanical processing. However, for large-sized flat parts with complex shape features, such as high-speed iron brake discs, if the rough forging is produced by free forging and then machined, machining will take more time and will also lead to forging streamlines. Cutting off reduces the mechanical properties and physical properties of the product. [0003] The forged brake disc has good mechanical properties at room temperature a...

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Problems solved by technology

[0006] Aiming at the problem of forming large-size flat parts with complex features, the present invention proposes a precision forming process for single-sided complex large-size flat parts, which solves the high demand for forming equipment for such parts, incomplete filling of complex features and product quality Instability and other difficulties, the precision forming of single-sided complex large-size flat parts is realized

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