Chamber Precision Forging Process Of Numerical Simulation And Process Parameters Affect The Study

Gun barrel is a thick and hollow part which is composed with three characteristic surface: line chamber, chamber, outside surface.In the currently producing process, line chamber is generally produced by radial forging; the two other characters are made with machining. The shortcoming of machining is that the productivity is very low and it is very hard to guarantee the tolerance of inner radius and surface roughness of the chamber.The feasibility, stability, quality of forming(including brimming forming, replicate and organize disfigurement), material utilize efficiency and how to reduce load, how to improve life-span of mould are all emphasized when we work out forming techniques. In this paper, several key techniques are simulated with software Ls-dyna:(1)Analyze the change of load and strain distribute in different friction and feed; reduce the load and improve the uniformity of strain distribute.(2)Analyze the change of load, quality of forming, strain distribute in different diameter, improve the uniformity of strain distribution and the quality of forming, resolve the brimming forming by choosing a reasonable diameter.(3)Research the chamber length and height which will effect the quality of forming, find out the maximal height and minimum length which can be obtained in forging and will guide us in design.