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混凝土电杆的杆模是通过钢板铆接焊制而成的。在铆接工作中,铆丁窝头是主要工具之一,它的寿命与其选用材料和热处理方法有着极密切的关系。我们原选用 T8钢制作,热处理方法是790℃水淬,肩部用烤把局部回火,然后再整体270℃回火。这样热处理后的窝头,工作部分硬度为 HRC55—60肩部硬度为 HRC27—30。根据旧的传统观念,aK 值的大小表示材料韧性的高低,也就是用 aK 值来衡量金属材料承受一次大能量冲击载荷的抗力。那么铆丁窝头肩
The pole of the concrete pole is welded by steel riveting. In the riveting work, riveting dice head is one of the main tools, its life expectancy and its selection of materials and heat treatment methods have a very close relationship. Our original selection of T8 steel production, heat treatment method is 790 ℃ water quenching, shoulder with a local tempering roasted, and then the overall tempering at 270 ℃. After such a heat treatment of the Wotou, working part of the hardness of HRC55-60 shoulder hardness of HRC27-30. According to the old tradition, the value of aK indicates the toughness of a material, that is, the aK value is a measure of the resistance of a metal material to a large energy impact load. So riveting dingo head and shoulders