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Abstract:
Simulation had been carried out upon the process of thermal assembling of valve rod and plunger in this paper by employing the software ANSYS WORKBENCH. First, it could be confirmed that the expansion magnitude of inner hole diameter of 0.3mm valve rod meets the assembling requirements, in accordance with the expansion condition after being heated of valve rod assembling section under simulation based on the assembling temperature calculated in theory and the deformation analysis upon valve rod after heating. Then, analysis of stress and strain upon assembly body after cooling had been conducted in the process of installing simulation plunger into valve rod and valve rod shrinking with cold to hold tightly plunger rod, which had provided theoretical analysis for thermal assembling of valve rod and plunger.
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