Method for forging cake series forgeable piece with different directions

A forging method and forging technology, which is applied in the field of cake forging forging, can solve the problems of large deformation, tearing of cake-shaped parts, scrapping of forgings, etc., and achieve the effect of avoiding tearing

Inactive Publication Date: 2008-05-14
ANSTEEL HEAVY MACHINERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the deformation process of the forging, the deformation in the height direction of the upsetting cake is relatively large. When the height of the upsetting cake is small, severe tearing occurs inside the cake and the forging is scrapped.

Method used

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Examples

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Effect test

specific Embodiment approach

[0037] The specific embodiment of the present invention is described below by taking the forging of a cake forging with a diameter of 2080mm and a thickness of 300mm as an example, including the following steps:

[0038] 1) Clamping jaws, chamfering, cutting ingot tail: compact the jaw part of the ingot, pour out the edges and corners of the ingot, cut off the riser at the end of the ingot,

[0039] 2) Axial upsetting: Upsetting the steel ingot along the axial direction to become a flat round forging with a thickness of 1100mm,

[0040] 3) Lengthen the blank, cut off the jaw part, and lengthen the oblate forging with a thickness of 1100mm to a rectangular forging with a length of 1285mm, a width of 900mm and a thickness of 900mm,

[0041] 4) Upsetting the cuboid forging,

[0042] 5) During the upsetting process, the forging direction was changed continuously, the forging was turned 90° for changing direction forging, and the upsetting was up to a cube of 1013mm.

[0043] 6) ...

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Abstract

The invention relates to a cake-shaped direction-changing forged piece method, belonging to the technical field of metallurgy forging, which comprises the following steps: firstly, compaction of the jaw of the steel ingot, chamfering and cutting the end of the steel ingot; the jaw part is compacted; the angle of the steel ingot is discarded and the riser of the end of the steel ingot is cut off; secondly, upsetting axially: the steel ingot is upset along the axial direction to be an oblate forged piece; thirdly, drawing-out the blank, cutting the jaw part: the oblate forged piece is drawn out to be cuboid forged piece with a quadrate sections; fourthly, the cuboid forged piece with the quadrate section is upset to be cube; fifthly, changing the direction of forging; the cubic forged piece is overturned 90 degrees and is forged direction-changing; the one-time upsetting ratio of the upsetting process is decreased from 4 to 5 to 3 to 4; sixthly, the cubic forged piece is chamfered and rounded to be a cylinder; seventhly, the cylinder forged piece is upset to be cake-shape. The one-time upsetting ratio of upsetting process is reduced and the avulsion area is avoided. The invention has the advantages that the lateral avulsion of the tube sheet forged piece is prevented; the avulsion phenomenon is avoided completely; the product quality is assured and the eligible cake-shaped forged piece is produced.

Description

technical field [0001] The invention relates to the technical field of metallurgical forging processes, in particular to a direction-change forging method for cake forgings. Background technique [0002] Tube sheet forgings are round cakes with small thickness and large diameter. At present, forging such forgings are formed by the following deformation methods: [0003] 1. Blanking: first transform the blank into a cylindrical material with a large height; [0004] 2. Upsetting is deformed into a round cake shape. [0005] The purpose of this is to make the internal structure of the billet dense and improve the usability. However, during the deformation process of the forging, the deformation amount of the upsetting cake in the height direction is relatively large. When the height of the upsetting cake is small, serious tearing occurs inside the cake and the forging is scrapped. In the later stage of the upsetting process, under the action of the deformation law, a sever...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/08B21J5/06B21J1/00
Inventor 孙凤先吕宏伟张文辉王志清赵群许松梅肖连军
Owner ANSTEEL HEAVY MACHINERY CO LTD
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