Cleaning of investment castings

2022-04-08

The main contents of investment casting cleaning are:

(1) remove the shell from the casting; (2) remove the casting from the self-pouring system; (3) remove the shell refractory material adhered to the casting; (4) the casting Cleaning after heat treatment, such as descaling, edge and cutting gate residues, etc.

Investment casting process design

Like general casting process design, the tasks of investment casting process design are:

(1) Analyze the manufacturability of the casting structure;

(2) Select a reasonable process plan, determine the relevant casting process parameters, and draw the casting diagram on the basis of the above;

(3) Design the pouring system and determine the module structure.

When considering the above three aspects, the main basis is still the basic principles of the general casting process, especially when determining the process plan and process parameters (such as casting fillet, draft angle, machining allowance, process ribs, etc.), Except the specific data is slightly different due to the technological characteristics of investment casting, the design principle is exactly the same as that of sand casting.

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