焊接设备包括自动等离子弧和TIG 表面硬化机械设备。在此只展示少数典型设备。
Welding equipment includes automatic plasma arc and TIG hardfacing machines. Only a few typical machines are shown here.
阀座环较长，并且是密封焊接的，能够补偿温度波动。阀座面用钨铬钴合金6硬化， 研磨和层叠为镜面光洁度。
Seat rings are long to compensate for temperature fluctuations and are seal - welded. seating faces are hardfaced with stellite 6, ground and lapped to mirror finish.
焊接设备包括自动等离子弧和TIG表面硬化机械设备。
Welding equipment includes automatic plasma arc and TIG hardfacing machines.
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