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我厂在自制200T油压机过程中,油压机的油缸活塞密封环,按设计要求材质为聚氯乙烯,内径为φ270,而我厂库存只有内径φ240的规格。由于时间紧迫,不容拖延,工人同志提出并采用加温扩涨法将密封环的内径涨大。把密封环先浸入沸水内,提高温度后用涨胎扩大其内径,同时从外用胎具控制,使之达到规定的尺寸,并将多余部分在车床上切去,从而解决了密封环规格不符的难题。
I plant in the process of self-made 200T hydraulic machine, hydraulic cylinder piston seal ring, according to the design requirements of material for the PVC, diameter φ270, and I only stock inventory Φ240 specifications. Due to time constraints, without delay, the workers comrades and the use of warm expansion method will ring the inner diameter rose. The first seal ring immersed in boiling water, after raising the temperature with the expansion of the tire diameter, at the same time from the external control of the tire, so that the provisions of the size, and the excess part of the lathe cut to solve the seal ring does not match the specifications problem.