Heat treatment technology of pipe fitting reducer

　　Cold pressure or hot pressing is determined on the basis of different material and variable diameter of pipe fitting reducer. Cold pressure is used as much as possible, but the thickness of wall thickness or the material of alloy steel should be hot pressed. The tube blank is smaller than the large end large end diameter. The inner die is expanded along the inner diameter of the tube billet. The enlargement process mainly solves the situation that pipe fitting reducer with large variable diameter are not easily formed by shrinkage forming. Sometimes, the method of expanding diameter and reducing diameter is combined in accordance with the forming needs of materials and products.

　　Because the ANSI 304 Seamless Stainless Steel Pipe Fitting Reducer is heated to press three links after heating, the tonnage of the equipment required for the material forming is reduced. The hot press three connects to the material, which is used in the materials of low carbon steel, alloy steel and stainless steel; in particular, the three pass of the large diameter and the thick wall of the tube is usually used. The pipe fitting reducer of the departmental specifications can also be produced by the stamping process of the steel plate. The shape of the die used in the drawing is designed with reference to the size of the inner surface of the head, and the die is used to press and stretch the steel plate after the blanking.