Process for improving metallographic structure of piston head and increasing casting production efficiency
A metallographic structure and casting production technology, applied in the direction of manufacturing tools, casting molding equipment, metal processing equipment, etc., can solve the problems of low production efficiency, large difference in piston hardness, long feeding time, etc., to improve the utilization of materials. rate, improve cooling effect, shorten the effect of feeding time
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[0038] This process technology is specifically implemented on the eutectic Al-Si alloy piston, the specific variety is 495T;
[0039] In order to ensure the accuracy of the experiment, it is necessary to monitor all aspects of design and production. The process is as follows:
[0040] 1. Tooling mold design: According to the technical content, principle and effect analysis of this process, the tooling mold design is carried out.
[0041] a) Change the traditional design of the piston combustion chamber with the long axis eccentricity behind. The long axis direction of the piston combustion chamber is eccentric, so that the diameter of the hot pitch circle in the piston riser direction is reduced by 5-7mm, which corresponds to 495T, YC6108G, LR105, N485, N485AW, RCB108, LR108-1 series of engine pistons, the diameters before the change were 30mm, 35mm, 31mm, 27.5mm, 27.5mm, 33.5mm, 33.5mm; provided for reducing the insulation riser Possibly, and shortened the feeding time, and at the ...
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