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Process for forging I-shaped part

A process method and I-shaped technology, applied in the direction of metal processing equipment, etc., can solve the problems that the flatness cannot be guaranteed, and the forging slope is generated.

Active Publication Date: 2010-06-16
青岛中车四方轨道车辆有限公司
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  • Abstract
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  • Claims
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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

Method used

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  • Process for forging I-shaped part

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Embodiment 1

[0020] The first step is to forge the φ100 cylindrical blank into a rectangular blank with a section of 80mm×38mm;

[0021] The second step is to cut the blank with a band saw according to the weight of the forging;

[0022] The third step is to forge the head of the I-shaped structural part and the transition between the head and the rod with the tire die, and distribute the blanks at the same time, as figure 1 , figure 2 As shown, the depth of the head cavity of the lower mold of the tire mold is 39mm, the depth from the stem to the mold is 20mm, the thickness of the mold is 60mm, and the width of the mold is 110mm. The structure is exactly the same as the said tire mold lower mold;

[0023] The fourth step is to forge the rod with a drop die;

[0024] The fifth step is to put the said forging into the finishing mold and clamp it, erect the mold for forging to ensure that the two planes of the inner rail are flat, and then flatten the mold for forging to ensure the size,...

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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. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/02
Inventor 张艳萍高玉斌
Owner 青岛中车四方轨道车辆有限公司
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