The welding neck flange is mainly used for the welding of the flange and the pipe, the layout is reasonable, the strength and the rigidity is big, can withstand the high temperature and high pressure and the repeated bending and the temperature fluctuation, the seal is reliable.
The forging process of the welding neck flange is composed of the following processes, namely, the selection of high quality billet cutting, heating, forming, forging and cooling. The forging process includes free forging, die forging. Production, according to the size of the quality of the forging, the number of production batches to choose different forging methods.
The free forging has low productivity and large machining allowance, but the tool is simple and universal, so it is widely used in forging the single piece and small batch forging. High productivity, simple operation, easy to realize mechanization and automation.
Zhenggang Industrial Park, Yanshan County, Cangzhou City Hebei Province, China.
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