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The free forging method of realizing super large and super heavy forgings by using 3 tons free forging hammer

A forging and free technology, which is applied in forging/pressing/hammer devices, hammers, manufacturing tools, etc., can solve the problems that the radian of forgings cannot meet the process requirements, stuck, and bending cannot be performed, etc.

Active Publication Date: 2018-07-27
HARBIN TURBINE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the radian of the forging cannot meet the technological requirements in the existing forging production using a 3-ton free forging hammer. When the forging is bent to a certain angle, the forging will be stuck on the bumper of the equipment, making the bending impossible. Carry out; it is difficult to control the problem of deformation, and provide a free forging method using a 3-ton free forging hammer to realize super large and super heavy forgings

Method used

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  • The free forging method of realizing super large and super heavy forgings by using 3 tons free forging hammer
  • The free forging method of realizing super large and super heavy forgings by using 3 tons free forging hammer
  • The free forging method of realizing super large and super heavy forgings by using 3 tons free forging hammer

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specific Embodiment approach 1

[0024] Specific implementation mode one: combine Figure 1 to Figure 7 , the present embodiment utilizes 3 tons of free forging hammers to realize the free forging method of super large and super heavy forgings, which is specifically completed according to the following steps:

[0025] 1. Draw the forging diagram and calculate the blank size:

[0026] According to the relevant requirements of the national standard GBT 21470-2008, draw the forging diagram of the partition body to obtain the forging diagram of the partition body. The radius of the forging of the partition body in the forging diagram of the partition body is R, and the thickness is H. Calculate blank size from forging diagram and actual deformation steps;

[0027] 2. Elongation: Prepare the round billet according to the billet size calculated in step 1, put the round billet into the furnace, and heat it to the initial forging temperature of 1200 ° C, and draw the round billet into a long strip at the forging tem...

specific Embodiment approach 2

[0037] Specific implementation mode two: combination Figure 1 to Figure 7 , The differences between this embodiment and the first embodiment are: the radius of the partition body forging in step one is R, R=700mm-800mm, and the thickness is H, H=230mm-250mm. Others are the same as the first embodiment.

specific Embodiment approach 3

[0038] Specific implementation mode three: combination Figure 1 to Figure 7 The difference between this embodiment and the first or second embodiment is that the mass of the round blank described in the second step is 700kg-850kg. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention provides a free forging method for an oversized overweight forging through a 3-ton free forging hammer and relates to a forging method for an oversized overweight forging. The free forging method aims at solving the problems that the radian of a forging cannot meet the process requirements fundamentally during existing forging production through a 3-ton free forging hammer; when bent to a certain angle, the forging is clamped on an equipment bumper, and bending cannot be conducted; and deformation is hard to control. The free forging method comprises the steps that 1, a forging drawing is drawn, and the size of a blank is calculated; 2, drawing-out is conducted, and a long-strip forging is obtained; 3, large-angle bending forming is conducted, and a semi-ring rough forging is obtained; 4, small-angle bending forming is conducted, and a rough forging is obtained; and 5, forging trimming is conducted, so that the partition plate body forging is obtained. The free forging method has the advantage that the qualified rate of the forging is 100% and is mainly used for forging the oversized overweight forging through the 3-ton free forging hammer.

Description

technical field [0001] The invention relates to a forging method of super-large and super-heavy forgings. Background technique [0002] The partition body used in the existing ultra-supercritical unit is a half-ring structure. The diameter of the forging blank is designed to reach 1800mm and the weight is 800kg. The existing problems in forging production using a 3-ton free forging hammer are as follows: 1. The arc of the forging cannot be reached at all. Meet the process requirements; 2. When the forging is bent to a certain angle, the forging will be stuck on the bumper of the equipment, making the bending impossible; 3. It is not easy to control the deformation. Contents of the invention [0003] The purpose of the present invention is to solve the problem that the radian of the forging cannot meet the technological requirements in the existing forging production using a 3-ton free forging hammer. When the forging is bent to a certain angle, the forging will be stuck on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/00B21J7/00
CPCB21J5/002B21J7/00
Inventor 杨鑫郑化冰姚爱龙王永刚蒲海亮韩小明陆建新于长文崔伟军曹利峰
Owner HARBIN TURBINE
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