Die casting surface treatment process

A surface treatment and die-casting technology, which is applied in the field of die-casting surface treatment technology, can solve the problems of reducing yield, increasing production cost, and gas cannot be discharged in time, so as to reduce bulging and improve product yield.

Pending Publication Date: 2018-08-03
佛山市南海区合亿金属制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this method has a serious disadvantage: the gas and water vapor in the ash material filled with holes expands due to baking, but because the paint film is airtight, the gas cannot be discharged in time, causing the gas to expand and lift up, making the surface

Method used

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  • Die casting surface treatment process
  • Die casting surface treatment process

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] S1, filling the ashes into the holes of the die casting;

[0052] S2. Adjust the temperature of the oven to 100°C, and bake the filled die casting;

[0053] S3. After the ashes of the die-casting parts are dried and solidified, smooth out the protrusions or depressions formed on the die-casting parts after baking until the surface of the protrusions or depressions is dry and smooth;

[0054] S4. Spraying the die casting to obtain a finished product.

Embodiment 2

[0056] S1, filling the ashes into the holes of the die casting;

[0057] S2. Adjust the temperature of the oven to 200°C, and bake the filled die-casting;

[0058] S3. After the ashes of the die-casting parts are dried and solidified, smooth out the protrusions or depressions formed on the die-casting parts after baking until the surface of the protrusions or depressions is dry and smooth;

[0059] S4. Spraying the die casting to obtain a finished product.

Embodiment 3

[0061] S1, filling the ashes into the holes of the die casting;

[0062] S2. Adjust the temperature of the oven to 400°C, and bake the filled die casting;

[0063] S3. After the ashes of the die-casting parts are dried and solidified, smooth out the protrusions or depressions formed on the die-casting parts after baking until the surface of the protrusions or depressions is dry and smooth;

[0064] S4. Spraying the die casting to obtain a finished product.

[0065]Observing the surface of the finished product obtained according to the above process with the naked eye, the analysis in the following table is obtained.

[0066] Table 1 Surface roughness

[0067] Example

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Abstract

The invention relates to a die casting surface treatment process. The die casting surface treatment process comprises the following steps: (S1) ash materials are filled in holes of die castings; (S2)the filled die castings are baked; (S3) after the ash materials of the die castings are dried and solidified, projections and recess positions formed by baking on the die castings are leveled until the surfaces of the projections or the recess positions are dry and smooth; and (S4) the die castings are sprayed to obtain finished products. The die casting surface treatment process effectively reduces the paint film bump phenomenon of the finished products by adopting a mode of spraying after baking, so that the yield of the products is improved; and in particular, the die castings are baked after paint or powder spraying to obtain finished die castings.

Description

technical field [0001] The invention relates to the field of metal surface treatment, in particular to a surface treatment process for die castings. Background technique [0002] In the prior art, the spraying treatment process of die-castings is generally to first fill the surface holes of the die-castings with ashes such as atomic ash, then perform spraying or painting treatment, and finally bake and cure the sprayed layer. But this method has a serious disadvantage: the gas and water vapor in the ash material filled with holes expands due to baking, but because the paint film is airtight, the gas cannot be discharged in time, causing the gas to expand and lift up, making the surface of the paint film Bumps are formed, and the surface of the finished product is uneven. This kind of product can only be scrapped, which reduces the yield rate, increases the production cost, and seriously restricts the healthy development of the manufacturer. Contents of the invention [00...

Claims

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Application Information

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IPC IPC(8): B05D3/00B05D1/02B05D1/12B05D3/02
CPCB05D1/02B05D1/12B05D3/002B05D3/0254
Inventor 孙公益
Owner 佛山市南海区合亿金属制品有限公司
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