Process for forging I-shaped part

Abstract

The invention discloses a process for forging an I-shaped part, which mainly comprises the following steps: (1) forging a cylindrical blank into a rectangular blank with a cross section of 80 mm * 38mm; (2) cutting and blanking with a band saw according to the weight of a forge piece to be forged; (3) forging the head part of the I-shaped part and the transition site of the head part and the rodpart of the I-shaped part with forming die, and distributing the blank; (4) forming the rod part with the forming die; and (5) placing the force piece into a sizing die, clamping down, erecting the die, forging to ensure the flatness of the internal two surfaces, laying the die flat, and forging to ensure the size. The invention provides a local forging method with the forming die. The two internal surfaces of the forged I-shaped structural part can meet the strict requirements for parallelism and flatness. The forged part is as-forged, i.e. not subjected to machining after forging.

Description

technical field [0001] The invention relates to a metal pressure processing process, in particular to a forging process for I-shaped structural parts of a coupler buffer device for locomotives and passenger cars. Background technique [0002] The coupler buffer device for locomotives and passenger cars includes an I-shaped structural part, which is characterized by a round rod in the middle and a rectangular parallelepiped at both ends, and the distance between the inner rails of the rectangular parallelepiped is an important dimension, and the two planes of the inner rails have parallelism and flatness. Strict requirements, it is black leather forging, that is, no machining will be carried out after forging, so forging is very difficult. If the above-mentioned parts are directly integrally die-forged, the two planes of the inner gear will have a die-forging inclination, which cannot guarantee the flatness requirement, and can only be achieved through further machining. [...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the I-shaped structural parts of the coupler buffer device of the locomotive and passenger car adopt direct die forging, the two planes of the inner gear will produce a die forging slope, which cannot guarantee the flatness requirements. The purpose of the present invention is to provide a different The forging process method of I-shaped parts based on integral die forging, that is, the method of partial tire die forging, the two planes of the inner gear can reach parallel The strict requirements of degree and flatness are black leather forgings, that is, no machining will be carried out after forging

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