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Wire-drawing die and manufacturing method thereof

A wire-drawing die and ceramic layer technology, applied in wire-drawing die and other directions, can solve the problems of low production efficiency, harsh requirements, and low bonding strength of coatings

Active Publication Date: 2015-05-06
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods have the disadvantages of demanding production equipment, low production efficiency, and low coating bonding strength.

Method used

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  • Wire-drawing die and manufacturing method thereof
  • Wire-drawing die and manufacturing method thereof
  • Wire-drawing die and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Embodiment 1: the preparation method of drawing die, the steps are as follows:

[0074] 1. First prepare a tungsten plate 2, in which the purity of tungsten should be controlled at 99.7%. The tungsten plate 2 should be surface treated first, the steps are as follows:

[0075] The first step is pickling, choose 300ml / L hydrochloric acid, and then rinse with running water;

[0076] In the second step of pickling, choose 300ml / L hydrofluoric acid, and then rinse with running water;

[0077] The third step is surface grinding, using 800 mesh Al 2 o 3 Sandpaper and finally ultrasonic cleaning with alcohol. The thickness of the tungsten plate 2 is controlled at 0.2 mm.

[0078] 2. According to the size of the wire drawing die, polystyrene foam is used to make the lost foam of the wire drawing die. According to the working force of the wire drawing die, the main wear is the strong friction between the inner hole of the wire drawing die and the metal to be processed. The ...

Embodiment 2

[0088] Embodiment 2: the preparation method of drawing die, the steps are as follows:

[0089] 1. Prepare a tungsten plate 2 first, in which the purity of tungsten should be controlled at 99.8%.

[0090] The tungsten plate 2 should be surface treated first, the steps are as follows:

[0091] The first step is pickling, 60ml / L phosphoric acid, and then rinse with running water;

[0092] The second step is pickling, 200ml / L sulfuric acid, and then rinse with running water;

[0093] The third step is surface grinding, using 1000 mesh Al 2 o 3 Sandpaper and finally ultrasonic cleaning with alcohol. The thickness of the tungsten plate 2 is controlled at 0.8mm.

[0094] 2. According to the size of the wire drawing die, polystyrene foam is used to make the lost foam of the wire drawing die. According to the working force of the wire drawing die, the main wear is the strong friction between the inner hole of the wire drawing die and the metal to be processed. The tungsten plate ...

Embodiment 3

[0104] Embodiment 3: the preparation method of drawing die, the steps are as follows:

[0105] 1. Prepare a tungsten plate 2 first, wherein the purity of tungsten should be controlled at 99.8%. The tungsten plate 2 should be surface treated first, and the steps are as follows:

[0106] The first step is pickling, 120ml / L hydrogen peroxide, and then rinse with running water;

[0107] The second step is pickling, 240ml / L hydrogen peroxide, and then rinse with running water;

[0108] The third step is surface grinding, using 1200 mesh Al 2 o 3 Sandpaper and finally ultrasonic cleaning with alcohol. The thickness of the tungsten plate 2 is controlled at 1mm.

[0109] 2. According to the size of the wire drawing die, polystyrene foam is used to make the lost foam of the wire drawing die. According to the working force of the wire drawing die, the main wear is the strong friction between the inner hole of the wire drawing die and the metal to be processed. The tungsten plate is...

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Abstract

The invention discloses a wire-drawing die. Carbide coatings are arranged on the surfaces of work portions. The invention further provides a manufacturing method of the wire-drawing die. The work portions of the upper surface and the lower surface of the wire-drawing die are provided with the carbide coatings. A pseudo-single crystal WC compact ceramic layer, a micrometer WC ceramic layer and a composite layer of WC and a base body are distributed from outside to inside sequentially in a gradient mode and are applied to the surfaces of carbon steel. The base body and a tungsten composite body are obtained in a casting mode, an external carbon source is introduced, heating and heat preservation are carried out, and therefore the carbide coatings are formed on the surfaces of the base body. The coatings and the base body are combined in a metallurgy mode, the combination force is high, the problems in the prior art that hard particles and the base body are combined in a non-metallurgy mode, the combination force is weak, and particles are prone to falling off are solved, and the abrasion resistance of the work surface of the wire-drawing die is largely improved.

Description

technical field [0001] The invention relates to a composite wire drawing die with a wear-resistant coating and a preparation method thereof, in particular to a composite wire drawing die with a wear-resistant carbide coating and a preparation method thereof, in particular to a wear-resistant carbonization applied to the surface of carbon steel Material-coated composite wire drawing die and preparation method thereof. Background technique [0002] In metal pressure processing, the metal is forced to pass through the mold under the action of external force, the metal cross-sectional area is compressed, and the tool that obtains the required cross-sectional area shape and size is called a wire drawing die. In the metal product drawing industry, the wire drawing die is a very important consumable tool. Drawing dies are widely used, such as high-precision wires used in electronic devices, radars, televisions, instruments and aerospace, as well as commonly used tungsten wires, mo...

Claims

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Application Information

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IPC IPC(8): B22D18/06B22D19/16B21C3/02
Inventor 许云华赵娜娜卢正欣钟黎声梁淑华燕映霖叶芳霞王亮亮邹军涛肖鹏
Owner XIAN UNIV OF TECH
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