Manufacturing method of high-performance wire-drawing die core

A manufacturing method and wire drawing die technology, which are applied in the field of mold manufacturing, can solve the problems of poor surface quality, complicated preparation process, and high cost of forming wire rods

Inactive Publication Date: 2014-01-01
SUZHOU YIQUN MOLD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the preparation process of cemented carbide, natural diamond or artificial diamond mold core is complicated and the cost is high. Due to the large friction and vibration in the wire drawing process, the mold core is a high-loss part, and its maintenance and replacement The cost accounts for more than 50% of the total consumables for drawing production. Therefore, the mold cores made of the above materials are not cost-effective
Although the current mold core made of alloy steel has advantages in terms of production cost, it still has insufficient performance in terms of wear resistance, heat resistance, and corrosion resistance. The service life is relatively low, and the surface quality of the forming wire is not high.

Method used

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  • Manufacturing method of high-performance wire-drawing die core

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Effect test

Embodiment 1

[0017] The specific preparation process of the manufacturing method of the high-performance wire drawing die core mentioned in the present invention is as follows:

[0018] a) Material selection and ingredients, the main components and percentages of the core material are: Si5.5%, Mn4%, B0.6%, Cr2.5%-3%, Al2.5%, MoS2 6%, Mg1. 8%, the rest is pure iron powder; among them, the particle size of SiC powder is controlled at about 300 mesh, the particle size of pure iron powder is controlled at about 250 mesh, and the particle size of other alloy powder is controlled at about 400 mesh; The carbon content in the core material is controlled at 0.2%-0.25%, and the content of impurities is controlled below 0.02%;

[0019] b) Mixing and pressing, the mixing of powder is carried out in a metal powder mixer, the temperature of the mixing cylinder is controlled at 40°C-50°C, lubricants, binders and passivators are added during the mixing process The mass ratio of the three is about 1:8:2, ...

Embodiment 2

[0024] The specific preparation process of the manufacturing method of the high-performance wire drawing die core mentioned in the present invention is as follows:

[0025] a) Material selection and ingredients, the main components and percentages of the core material are: Si6%, Mn5%, B0.7%, Cr2.8%, Al2.5%, MoS2 5%, Mg1.5%, and the rest are Pure iron powder; Among them, the particle size of SiC powder is controlled at about 300 mesh, the particle size of pure iron powder is controlled at about 250 mesh, and the particle size of other alloy powder is controlled at about 400 mesh; The carbon content is controlled at 0.2%-0.25%, and the content of impurities is controlled below 0.02%;

[0026] b) Mixing and pressing, the mixing of powder is carried out in a metal powder mixer, the temperature of the mixing cylinder is controlled at 40°C-50°C, lubricants, binders and passivators are added during the mixing process The mass ratio of the three is about 1:8:2, the total mass of the ...

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Abstract

The invention discloses a manufacturing method of a high-performance wire-drawing die core. The manufacturing method comprises the following steps that a), material selecting and compounding are conducted; b), material mixing and pressing are conducted; c), high-temperature sintering is conducted; d) laser core manufacturing is conducted; e) heat treatment is conducted. The manufacturing method of the high-performance wire-drawing die core is reasonable in procedure arrangement, easy and convenient to implement, and modest in cost, the material of the die core is selected and compounded reasonably, pressing, sintering, heat treatment and other procedures are arranged orderly and proper to implement, the comprehensive mechanical property of the die core is improved to the maximum degree, and particularly abrasion-resistance performance reaches the property level of cemented carbide.

Description

technical field [0001] The invention relates to a method for manufacturing a wire drawing die core, in particular to a method for manufacturing an iron-based wire drawing die core with outstanding wear resistance, and belongs to the technical field of die manufacturing. Background technique [0002] The wire drawing die is a tool for stretching metal wire (rod) materials. Its body is mainly composed of a steel sleeve and a mold core. The steel sleeve is usually made of stainless steel, and the mold core can be made of hard alloy, alloy steel, natural diamond or artificial diamond. and other materials. Among them, the preparation process of cemented carbide, natural diamond or artificial diamond mold core is complicated and the cost is high. Due to the large friction and vibration in the wire drawing process, the mold core is a high-loss part, and its maintenance and replacement The cost accounts for more than 50% of the total consumables for drawing production. Therefore, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/16B22F3/24B22F5/00B21C3/16
Inventor 葛益军
Owner SUZHOU YIQUN MOLD
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