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无压锅炉封头旋压成型工艺北京有色金属研究总院（１０００８８）王振生北京京密机床修理总站（１００００７）李俊珍图１所示封头是新型无压锅炉的重要零件，材质为Ａ３钢或１Ｃｒ１８Ｎｉ９Ｔｉ。该件原采用冲压工艺制作，模具费用高，试制周期长。现采用旋压成型工艺，...
Pressureless Boiler Head Spinning Process Beijing Nonferrous Metal Research Institute (100088) Wang Zhensheng Beijing Jingmi Machine Tool Repair Station (100007) Li Junzhen The head shown in Figure 1 is an important part of the new pressureless boiler and is made of A3 steel or 1Cr18Ni9Ti . The original stamping process using the production of high cost of mold, trial cycle length. Are using spinning molding process, ...