苏联钢结构设计院新工艺科在多次试睑与生产检验的基础上,创制了用于自动和半自动CO_2焊的新式焊头。自动焊头:普通自动焊头的导电嘴是在气体喷咀的内部。在新式焊头中,二氧化碳气是沿着与导电嘴平行配置的导气管送进的。导电嘴固定在TC-17M焊接小车的接触钳口中(图1)。在导电嘴上套一个卡箍把导气管 The Soviet Union Steel Structure Design Institute of New Technology Division in a number of test eyelid and production tests based on the creation of automatic and semi-automatic CO_2 welding new welding head. Automatic welding head: ordinary automatic welding head tip is in the gas nozzle internal. In the new welding head, the carbon dioxide gas is fed along the air duct that is arranged parallel to the contact tip. The contact tip is fixed in the contact jaw of the TC-17M welding carriage (Figure 1). Place a clip on the conductive tip to connect the airway