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Multi-cell homogeneous-metal stacked-forging method for producing die steel module

A multi-unit, die steel technology, applied in the field of forging, can solve the problems of difficult to guarantee the internal metallurgical quality of the steel ingot, the influence of the yield, the consumption of large working hours and fuel, etc., and achieve significant economic benefits, improve the utilization rate, and reduce energy consumption.

Active Publication Date: 2017-01-04
辽宁北祥重工机械制造有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These defects are common in the steel ingot manufacturing process, and the larger the steel ingot is, the more difficult it is to guarantee the internal metallurgical quality of the steel ingot
Die steel generally needs to be forged into a cube, and the cutting edge and round steel ingot have a certain impact on the yield; moreover, the removal of the steel ingot is generally done by chopping or sawing, which requires a lot of man-hours and fuel.

Method used

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  • Multi-cell homogeneous-metal stacked-forging method for producing die steel module
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  • Multi-cell homogeneous-metal stacked-forging method for producing die steel module

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Embodiment Construction

[0047] according to Figure 1~4 The specific steps of the present invention are described in detail. The method for producing die steel modules by multi-unit homogeneous metal stack forging includes:

[0048] Step 1, in order to select a rolling slab of a suitable size, calculate the influence of factors such as the strain required for welding and temperature according to the material, so as to determine the cross-sectional size of the slab unit.

[0049] Based on the change of forging void defects in the plastic processing process studied by Jin Ning et al., the pressing mechanism, conditions and criteria of forging internal void defects in the plastic processing process are studied by using mathematical analysis method. Based on the basis, the criterion of internal void defects of press-fit forgings was deduced, and the closing law, closing path and closing speed of forging internal columnar voids in forging process of FM method, WHF method and V-shaped anvil were discussed...

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Abstract

Provided is a multi-cell homogeneous-metal stacked-forging method for producing a die steel module. The problem that cast steel ingots internally have the defects of voids, cracks, segregation and the like in the ingot casting process in the prior art due to improper casting speed and casting temperature control, the forming yield is low and the die steel module quality is affected is solved. The method comprises the steps that rolled blanks serve as metal cell bodies, the stacked blank unit bodies are put into a box body formed by welding common carbon steel, and the box body is vacuumized and sealed; a forging and heating process is established according to force piece inside void type defects closing conditions to fabricate the metal blank unit bodies into a whole blank material through high-temperature pressure-maintaining welding; the box body is dismounted, then the blank unit bodies are returned to a furnace for high-temperature diffusion, and then the blank material is forged to reach the size required by the die steel module. By the adoption of the method, the common defects such as segregation, mingling, contraction cavities, loosing and cracks of cast steel ingots are avoided, the overall quality of the die steel module is improved, the utilization rate of materials is improved, energy consumption is reduced, and the economic benefits are obvious.

Description

technical field [0001] The invention belongs to the technical field of forging, and specifically relates to a method of purifying a plurality of metal slab units of the same material through surface purification, vacuum packaging, and maintaining pressure at high temperature during the forging process to eliminate multiple hollow defects between the slab units. A method for producing die steel modules by stack forging of unitary homogeneous metals. Background technique [0002] The rapid development of industry has driven the development of the mold industry, which has led to the development of steel materials for molds. It is not difficult to see from the development history of die steel that the development of die steel has been gradually serialized, mainly including cold work die steel, hot work die steel, plastic die steel and special purpose die steel, among which the market demand for plastic die steel occupies the first place one. With the continuous adjustment of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/24
CPCB23P15/246
Inventor 白仁伟
Owner 辽宁北祥重工机械制造有限公司
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