Stainless steel tee is a pipe fitting for pipe branches. For the use of seamless tube manufacturing tee, the usual process is hydraulic bulging and hot pressing two. The hydraulic bulging of stainless steel tee is a forming process which compensates the bulging branch pipe by the axial direction of metal material. The process is to use special hydraulic press, with three links within the tube billet diameter equal injection liquid, through the two horizontal side of the hydraulic cylinder synchronization of the motion of tube billet, billet after squeezed smaller volume, smaller volume of liquid with the tube billet inside the tube billet and the pressure increases, when the stainless steel tee branch pipe bulge out to the pressure, the metal material in the liquid in the cylinder and the pipe pressure under the dual role of flow along the mold cavity and the branch pipe.
The hydraulic bulging process of stainless steel tee can be formed in one time with high production efficiency. Stainless steel tee main and shoulder wall thickness are increased.
Due to the large tonnage of equipment required by the hydraulic bulging process of stainless steel tee, it is mainly used for the manufacturing of stainless steel tee with standard wall thickness less than DN400 in China. The suitable forming materials are low carbon steel, low alloy steel and stainless steel with relatively low hardening tendency, including some nonferrous materials, such as copper, aluminum and titanium.
According to the manufacturing standard, it can be divided into GB/T12459,GB/T13401,ASME B16.9,SH3408, SH3409,HG/T21635,DL/T 695,SY/T 0510,DIN 2615.
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