the mold surface roughness is a very important technical parameter in mold making, because the surface finish of the molding area directly affects the surface roughness of the plastic part. A range of polishing tools is used to meet a different surface finish requirement. The society of plastics industry classifies mold surface finishes into 12 grades in 4 categories:
A—mirror image, it is typically polished with diamond paste, it’s surface finish Ra is 0—0.0001mm, applicable for plastic parts whose surface should have high luster. In general, mirror image is further classified into A1, A2, and A3.
B—smooth, it is usually polished with sand paper. It’s surface finish is between 0.0001—0.0002mm, applicable for plastic parts with a typical surface requirement. This category can be further classified into B1, B2, and B3.
C—Semi-smooth.it is polished with whetstone. It’s surface finish is between 0.0002—0.0008mm, applicable for plastic parts without a specific surface finish requirement. This category is also further classified into C1, C2, and C3.
D—General. Sand blasting is commonly used. This category is also further classified into D1, D2, and D3.
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thanks for your comment, actually every day, a lot of peoples from all over the world visit our wetsite and leave their Valuable comments, First-rate Mold Solution Co., Ltd. Team want to show our thanks to them, we also hope they can discuss those topics with us to promote techology communication and the development of the mould , we love our industry
by the way, we do have our own twitter and Facebook accounts
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