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Fabrication Process of Tee
Release time:
2022-03-04
The hydraulic bulging of the tee is a forming process in which the branch pipe is expanded by the axial compensation of the metal material. The process is to use a special hydraulic press to inject liquid into the tube blank with the same diameter as the tee, and squeeze the tube blank through the synchronous centering movement of the two horizontal side cylinders of the hydraulic press. After the tube blank is squeezed, the volume of the tube blank becomes smaller, and the pressure of the liquid in the tube blank increases as the volume of the tube blank becomes smaller. When the pressure required for the expansion of the tee branch pipe is reached, the metal material flows along the mold cavity under the dual action of the liquid pressure in the side cylinder and the tube blank and expands out of the branch pipe.
Divided by process
1. Hydraulic bulging
The hydraulic bulging of the tee is a forming process in which the branch pipe is expanded by the axial compensation of the metal material. The process is to use a special hydraulic press to inject liquid into the tube blank with the same diameter as the tee, and squeeze the tube blank through the synchronous centering movement of the two horizontal side cylinders of the hydraulic press. After the tube blank is squeezed, the volume of the tube blank becomes smaller, and the pressure of the liquid in the tube blank increases as the volume of the tube blank becomes smaller. When the pressure required for the expansion of the tee branch pipe is reached, the metal material flows along the mold cavity under the dual action of the liquid pressure in the side cylinder and the tube blank and expands out of the branch pipe.
The hydraulic bulging process of the tee can be formed at one time, and the production efficiency is high. The wall thickness of the main pipe and shoulder of the tee is increased.
Due to the large tonnage of equipment required for the hydraulic bulging process of seamless tee, it is mainly used in the manufacture of standard wall thickness tee less than DN400. The suitable forming materials are low carbon steel, low alloy steel and stainless steel with relatively low cold hardening tendency, including some non-ferrous metal materials, such as copper, aluminum and titanium.
2. Hot press forming
Three-way hot pressing forming is to flatten the tube blank larger than the diameter of the three-way to the size of the diameter of the three-way,
A hole is opened at the part of the stretching branch pipe; the tube blank is heated, put into the forming mold, and the die of the stretching branch pipe is installed in the tube blank; the tube blank is radially compressed under the action of pressure, and the metal flows in the direction of the branch pipe during the radial compression process and forms the branch pipe under the stretching of the die. The whole process is formed by the radial compression of the tube blank and the stretching process of the branch pipe. Unlike the hydraulic expansion tee, the metal of the hot-pressed tee branch pipe is compensated by the radial movement of the tube blank, so it is also called the radial compensation process.
Due to the use of heated pressing tee, material forming equipment required to reduce the tonnage. Hot-pressed tee has a wide adaptability to materials and is suitable for materials of low carbon steel, alloy steel and stainless steel. Especially for tee with large diameter and thick pipe wall, this kind of forming work is usually used.
Key words:
Hengjia Pipeline
Valve
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Address: Longtan Industrial Zone, Yanshan County, Cangzhou City, Hebei Province
Cangzhou Hengjia Pipeline Co., Ltd.
Cangzhou Hengjia Pipeline Co., Ltd. is located in Yanshan, Hebei Province, which is the sales branch of Hebei Longrun Pipeline Group Co., Ltd.
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