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What are the requirements for casting surface in precision machining

2022-06-13 16:55:28
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What are the requirements of precision machining on the surface of castings? In general, the surface of precision machined castings is not allowed to have penetrating defects such as cracks and shrinkage holes. In addition, the relevant marks and words should be clear and the roughness of non machined surfaces should not be greater than 50 μ m. Let's take a specific look at the relevant introduction in this regard.

Requirements of precision machining on casting surface:

1. During the processing of casting products, attention shall be paid to the treatment of defective parts such as sprue and riser, flying spurs, etc. if it is found that the sprue and riser on the non processed surface, such problems shall be leveled or polished as far as possible. In a word, they shall be cleaned as far as possible to meet the requirements of good surface quality.

2. The molding sand, core bone and other sundries on the casting processing shall be completely removed, and the surface of the casting shall be kept as flat as possible. In addition, the non processed surface of the machine product casting shall also be shot blasted or roller treated.

3. During machining, if the casting is inclined, it shall be arranged symmetrically.

4. In the process of precision machining, the related problems such as wrong pattern and boss casting deviation should be corrected in time. Besides smooth transition, the appearance quality should also be improved.

What are the requirements of precision machining on the surface of castings? The above is the relevant introduction in this respect. I hope you can understand it.


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