Q:What is the ejection angle of the die casting (Tan Gang)?

Because after the wax, wax parts will have a slight contraction, which is good for demoulding. Many moulds don't do the ejection angle

Q:How can the casting be free of trachoma?

Measures for the prevention of trachoma in castings:1, sand compaction to high, paint two times;

Q:How to calculate the price of casting parts?

According to the complexity of the workpiece, material and casting requirements and process yield

Q:In theory, which is more expensive, forging parts or casting parts?

The structure of the casting is relatively flexible in design, and the modeling is easy to realize.

Q:Casting parts have poor surface finish. What sand is used to make them?

Manual coal dust, clay sand is a little worse. Mechanical styling is not bad either.

Q:What are the causes of pitting on the surface of a precision casting?

The quality of the shell surface is out of order. Or shot blasting out of question.

Q:What do you mean by "proofing" in the casting? Do you charge for the proofing?

Die die must charge, wood cheap, expensive aluminum mold

Q:Casting blank in the cooling process to release a large amount of heat energy, what can be recycled?

Casting, do not need to provide a rough casting foundry drawings, according to your chart will put foot margin in the processing needs of the surface, the rest of the size can be found according to the mechanical design manual and manual casting.

Q:Which master knows how the casting tolerances for malleable iron, gray iron and ductile iron should be chosen? Hurry up, thank youCan you provide a tolerance scale for castings, please?

Usually manual molding optional CT11 class, ordinary machine modeling optional CT10 class, high pressure molding should reach CT9 level. The tolerances on the wall thickness of the casting are comparable to those of other dimensions of the same casting.

Q:What are the casting parts tested?

The surface brightness, appearance, size, chemical composition, weight, material, surface defects, internal defects, seals need to be checked, leakage, etc.