A model has been developed to simulate the heat transfer behavior during spark plasma sintering (SPS) process and by using the pure spherical copper particles as an example, the temperature distribution and the neck size evolution of the powder particles have been studied.

Starting from the valve structure relative to valve axial dimension, the structure, theory, adjusting method, operating method and characteristic for the special comparer which can be used for inspecting multiple axial parameters of engine valve in time are introduced in detail on the basis of the precondition of the unification between measuring benchmark and designing benchmark.

Process main, journal mouth, shoulder platform and crankshaft whose axial size needs more precision using the lathe of numerical control—CAK6150P.