Ring Rolling Forming Method for One-piece Whole Ring Rolling and Bending of Special-shaped Joints

Abstract

The invention relates to a ring-rolling forming method for single-piece integral ring-rolling and bending of special-shaped joints, which belongs to the technical field of forging in mechanical manufacturing. The processing steps are as follows: According to the size of the special-shaped joint in use, the forging of the special-shaped joint is obtained after increasing the machining allowance according to the shape; using the conventional forging method to forge the ring blank, first heating the blank before forming the special-shaped joint to the forging temperature of 950‑1100 ° C and then Heat preservation, place the large hole in the center of the billet before the special-shaped joint is formed in the ring rolling mandrel roll, place the ring boss part of the billet in the cavity, and form until the outer circle of the billet is in contact with the straight edge of the main roll mold before the special-shaped joint is formed , stop feeding, move the core roll to separate the forging from the main roll mold, and then take the forging out of the cavity formed by the core roll mold and core roll mold briquettes to obtain a special-shaped joint forging. The invention has the advantages of simple operation, high production efficiency, conformal forging of forgings, good product quality, avoiding large deformation and high processing stress, and low processing cost, which is favorable for popularization and application.

Description

technical field [0001] The invention relates to a ring-rolling forming method for single-piece integral ring-rolling and bending of special-shaped joints, which belongs to the technical field of forging in mechanical manufacturing. Background technique [0002] The joint is a connecting part with a large cross-section, a large hole in the middle, and a special-shaped structure with a gradual thickness change on the flange surface. In the process of its use, it generally needs to be forged to meet the requirements of use. However, due to the complex shape and thin thickness of the part, it is difficult to forge and form. The current manufacturing method is generally: forging the product as a whole. The whole ring is then machined to the final required size. This method has a large machining allowance, resulting in large processing stress, discontinuous product flow, difficult to guarantee final dimensional accuracy, high manufacturing cost and low production efficiency. Con...

AI Technical Summary

Problems solved by technology

In the process of its use, it generally needs to be forged to meet the requirements of use. However, due to the complex shape and thin thickness of the part, it is difficult to forge and form. The current manufacturing method is generally: forging the product as a whole. The whole ring is then machined to the final required size. This method has a large machining allowance, resulting in large processing stress, discontinuous product flow, difficult to guarantee final dimensional accuracy, high manufacturing cost and low production efficiency.

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