关键词: 预成形；弯曲；侧移；始锻温度

Abstract:

According to the shape characteristics of large aluminum alloy shell forging and the actual production capacity a process scheme was proposed. Based on a series of simulation the influence of forging shape on final forming, the influence of friction factor, press speed, initial forging temperature on maximum forming force were analyzed, then the forming process was divided into four phases. According to numerical analysis and practice experience the proper blank dimensions, die structure and process parameters were achieved. At last the forming defects got eliminated, the forming load was controlled under 25000 ton, and the research object got test verification.

Key words: pre-form, bending, side-away, initial forging temperature