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目前,金属棒端部镦粗的作业,尽管采用锻造机,但也没有离开砧、锤、风箱等工具,劳动强度大。所以,这种墩粗作业应加以改进,并寻求自动化。把工件金属棒的一端与固定电极1相接触,在离开顶端约为直径1.5倍处,用移动电极2夹紧工件。在固定电极与移动电极间加上低电压(1～3V)使工件加热,当加热到1100℃时,利用液压推压配件5对工件
At present, the upsetting operation of the end of the metal rod does not leave tools such as anvil, hammer and bellows, despite the use of a forging machine, and has high labor intensity. Therefore, this rough work should be improved and seek automation. One end of the workpiece metal rod is in contact with the fixed electrode 1, and the workpiece is clamped by the moving electrode 2 at a distance of about 1.5 times the diameter from the top. In the fixed electrode and the moving electrode plus a low voltage (1 ~ 3V) so that the workpiece heating, when heated to 1100 ℃, the use of hydraulic pressure fittings 5 on the workpiece