This paper introduces the causes of internal void in large forgings and indicates that the factors influence mechanical closure of the void including height-diameter ratio of the forging,void position,void shape and stress triaxiality,and the factors influence welding closure of the void including pressure,temperature,holding time,shearing stress and cooling method.This paper also proposes criteria of void closure to provide basis for determining production processes of large forgings.
Void closuremechanical closurewelding closurecriteria of void closure
万方数据
维普
