Method for casting piston blank with inner cooling path by liquid state extruding casting process
A squeeze casting and process technology, which is used in the field of piston blank manufacturing
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[0019] Further illustrate the present invention below in conjunction with accompanying drawing.
[0020] Described dissolvable core (4) is made by following method:
[0021] a. Grind table salt and corundum until they pass through a 80-120 mesh sieve, then heat to 450-550°C to remove water and other volatile impurities contained therein;
[0022] b. According to the ratio of 20-40 parts by weight of corundum and 60-80 parts by weight of table salt, mix them evenly;
[0023] c. Put the uniformly mixed raw materials into the mold and extrude them;
[0024] d. Carry out turning processing on the shape of the formed soluble core;
[0025] e. Send the processed soluble core into the roasting furnace for firing, and then take it out.
[0026] Through the above method, a soluble core with salt as a binder and corundum particles as a matrix can be prepared. After the piston blank is made, the oil inlet and outlet holes connected to the inner cavity of the piston are drilled at the...
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Abstract
Description
Claims
Application Information
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