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Method for improving surface of mould by spraying tungsten carbide

A tungsten carbide and mold technology is applied in the field of spraying tungsten carbide to improve the surface of the mold, which can solve the problems that the mold will be damaged, cannot be popularized and applied, and the parts of the mold that need to be repaired cannot be effectively repaired and adjusted, so as to achieve the effect of convenient operation.

Inactive Publication Date: 2013-03-13
SUZHOU CHUNXING PRECISION MECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first method will damage the mold and cause slight deformation of the product
Another method not only takes a long time, but also costs a lot
Furthermore, the above two methods cannot effectively repair and adjust the part of the mold that needs to be repaired.
Therefore, the existing restoration methods cannot be promoted and applied to the greatest extent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The method of spraying tungsten carbide to improve the surface of the mold is particularly characterized by the following steps: first, cleaning the dross and oil stains on the area to be repaired on the mold. Specifically, first use a spatula to remove the flaky aluminum on the surface of the mold, then use an oil stone to polish the area that needs to be repaired, and finally wipe off the oil on the area that needs to be repaired with a clean cloth.

[0017] As a result, the area on the mold that needs to be repaired is kept in a relatively clean environment, preparing for the subsequent spraying of tungsten carbide.

[0018] Subsequently, a tungsten carbide coating machine is used to place a tungsten carbide rod on the vibrator, and the vibrator is placed in the area where the mold needs to be repaired, and at the same time, the return joint of the tungsten carbide coating machine is connected to the mold.

[0019] After completing the above preparatory work, start t...

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Abstract

The invention relates to a method for improving surface of a mould by spraying tungsten carbide, which is characterized by comprising the steps of: firstly, cleaning offscourings and grease dirt on a region to be repaired on a mould; secondly, adopting a tungsten carbide coating machine, installing a tungsten carbide rod on a shaker of the tungsten carbide coating machine, putting the shaker on the region to be repaired on the mould, and connecting a reflux joint of the tungsten carbide coating machine to the mould; thirdly, starting the tungsten carbide coating machine, regulating the shaking frequency and current output by the tungsten carbide coating machine, and searching a better spraying environment until a silvery white coating exists on the surface of the mould; and finally, completely repairing the region on the surface of the mould. Through manually regulating the shaking frequency and the current parameter of the tungsten carbide coating machine by a user, the method provided by the invention not only is adaptive to repair and protection requirements on the moulds made of different materials, but also can carry out optimal repair and protection on the moulds by controlling the spraying thickness.

Description

technical field [0001] The invention relates to a method for improving the surface of a mold, in particular to a method for improving the surface of the mold by spraying tungsten carbide. Background technique [0002] In the foundry industry, the quality of the mold plays a vital role, and the maintenance of the mold is a key part of it. During the production process, with the increase of the number of times the mold is used, defects such as erosion and hot cracks gradually appear on the surface of the mold. [0003] Faced with this situation, the general die-casting factory has two methods, one is to use on-site grinding and oil stone, and the other is to directly send the mold back to the mold factory to cut the inserts. The first method will damage the mold and cause slight deformation of the product. Another method is not only time-consuming, but also costly. Furthermore, the above two methods cannot effectively repair and adjust the part of the mold that needs to be ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/12
Inventor 孙洁晓谢平万智
Owner SUZHOU CHUNXING PRECISION MECHANICAL