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Casting method of cold working die module

A technology of cold working dies and castings, which is applied in the field of manufacturing cold working die modules, can solve the problems of complex forging process, waste of materials and energy, low processing efficiency, etc., to improve fluidity and solidification performance, refine grain Particles, the effect of reducing surface roughness

Inactive Publication Date: 2013-06-12
WUHAN UNIV OF TECH
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Problems solved by technology

[0002] The traditional forging of raw materials of cold work die steel mostly adopts the direction-changing forging method. The main forging process is: upsetting-drawing-upsetting. The disadvantages are: the forging process is complicated, the cost is high, and the processing efficiency is low. , and the forging module is a simple square or cylinder, which is quite different from the actual shape of the cold-work die module, and needs to be machined again
In the machining process after forging, the amount of machining is large, which will cause a lot of waste of materials and energy

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  • Casting method of cold working die module
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  • Casting method of cold working die module

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Embodiment Construction

[0028] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0029] The cold working mold module casting method of the present invention comprises the following steps:

[0030] S1, molten steel for smelting cold work die steel; molten steel contains the following elements in addition to Fe, by weight percentage: C1.55~1.75%, Cr11.50~12.50%, V0.20~0.30%, Mo0.45~0.55 %, Si≤0.25%, Mn≤0.20%, S≤0.030%, P≤0.030%, Ni≤0.15%, Cu≤0.2%. In a preferred embodiment of the present invention, C1.72%, Cr12.03%, V0.25%, Mo0.50%, Si≤0.25%, Mn≤0.20%, S≤0.030%, P≤0.030%, Ni≤0.15%, Cu≤0.2%. Use a medium frequency induction melting furnace to melt molten steel, use magnesia as the furnace lining material, place a cylindrical module in the center of the furnace, after the furnace lining is laid, first...

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Abstract

The invention relates to a casting method of a cold working die module. The casting method comprises the following steps of: S1, smelting molten steel of a cold working die steel; S2, adding a rare earth alloy alterant in original molten steel, wherein the mass ratio of the added alterant is 0.15-0.45% of the mass of the original molten steel; S3, manufacturing an evaporative pattern foaming block according to the size of the cold working die module, and burying the foaming block in a sand box; S4, pouring the molten steel added with the alterant; and S5, taking out the cold working die module cast, and performing the heat treatment. Compared with the prior art, the cold working die module is manufactured through the casting process of the evaporative pattern, the machining amount of the die is greatly reduced, the energy is saved and the waste of the material is reduced while guaranteeing the performance of the cold working die, and the production period is greatly shortened. The cold working die module manufactured by the method provided by the invention is low in cost and high in production efficiency.

Description

technical field [0001] The invention relates to a manufacturing method of a cold-work mold module, more specifically, to a casting method of a cold-work mold module. Background technique [0002] The traditional forging of raw materials of cold work die steel mostly adopts the direction-changing forging method. The main forging process is: upsetting-drawing-upsetting. The disadvantages are: the forging process is complicated, the cost is high, and the processing efficiency is low. , and the forging module is a simple square or cylinder, which is quite different from the actual shape of the cold-working die module, and needs to be machined again. In the machining process after forging, the amount of machining is large, which will cause a lot of waste of materials and energy. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a cold working mold module casting method that can save raw materials and improve processing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/56C22C38/46C22C38/36C22C38/24C22C33/06B22C9/04
Inventor 华林朱春东余小华李建华林平黄瑜
Owner WUHAN UNIV OF TECH
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