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A Forging Method for Improving the Yield of Die Steel

A technology of yield and die steel, applied in the field of forging, can solve the problems of uneven or irregular ends, large protrusions at the ends, material waste, etc., to improve the surface quality, reduce the protrusions at the ends, improve the The effect of yield

Active Publication Date: 2020-09-15
SINOSTEEL XINGTAI MACHINERY & MILL ROLL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the production process of die steel, the ends of steel products tend to become uneven or irregular, and there will be large protrusions at the ends, especially the protrusions of products with a relatively large width and thickness. This needs to be sawed after forging Flat head will cause a large waste of materials

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0030] Taking a module with a thickness of 200mm in final size as an example, after upsetting the blank to φ1350mm, draw the square with a reduction of no more than 10%. The thickness of the rear die steel billet is about 1260mm, and the width of the billet is about 1400mm; after the die steel billet is rotated 90°, follow the principle that the width ratio of the die steel is less than 0.3, the reduction is not more than 140mm, and the anvil is not more than 420mm; each pass Each time is produced according to this principle, which promotes the simultaneous deformation of both symmetrical sides of the mold steel billet.

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Abstract

The invention discloses a forging method for improving a mold steel yield, and relates to the technical field of forging. The forging method comprises the following steps: mold steel blanks are manufactured; in a first heating number, forging tools are preheated, and the mold steel blanks are heated and upsetted; in a second heating number, the forging tools are preheated, and the mold steel blanks are squared after heating; the length drawing ratio is above 3.0; the material width ratio is controlled below 0.3; the rolling reduction is controlled within 8-10%; the temperature of the mold steel blanks is controlled above 800 DEG C; the end parts are locally upsetted; the upsetting pressing quantity is controlled within 100-200 mm; a third heating number is a finished product heating number; and the mold steel blanks are heated and squared to reach final process sizes. The forging method effectively reduces the end convex heads to prevent the sawing wastes of a lot of materials, increases the yield of mold steel, and greatly improves the surface quality of products.

Description

technical field [0001] The invention relates to the technical field of forging, in particular to a method for improving the steel tapping rate. Background technique [0002] In the production process of die steel, the ends of steel products tend to become uneven or irregular, and there will be large protrusions at the ends, especially the protrusions of products with a relatively large width and thickness. This needs to be cut by sawing after forging A flat head will cause a large waste of materials. In order to solve this problem, measures should be taken from the operation point of view to solve the problem of end protrusion and improve the yield of die steel. Contents of the invention [0003] The technical problem to be solved in the present invention is to provide a forging method that improves the yield of die steel, which can effectively reduce the end protrusion, avoid a large amount of material sawing waste, improve the yield of die steel, and affect the surface ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/08B21K29/00
CPCB21J5/08B21K29/00
Inventor 许世昌王成辉梁振卿
Owner SINOSTEEL XINGTAI MACHINERY & MILL ROLL
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