1.Hot pressing
Cold drawing tee
Cold drawing tee
Three-way hot pressing is the tube blank larger than the diameter of the three-way, flattened to about the diameter of the three-way, in the part of the stretching branch pipe open a hole; The tube blank is heated and put into the forming die, and the punching die of the stretching branch pipe is loaded into the tube blank; Under the action of pressure, the billet is compressed radially. In the process of radial compression, the metal flows towards the branch pipe and forms the branch pipe under the tension of the die. The whole process is formed by the radial compression of the billet and the stretching of the branch. Different from the hydraulic bulging tee, the metal in the branch pipe of the hot pressing tee is compensated by the radial motion of the tube blank, so it is also called the radial compensation process.
Due to the use of heat after pressing tee, material forming equipment required to reduce tonnage. Hot-pressed tee has wide adaptability to materials, suitable for low carbon steel, alloy steel, stainless steel materials; In particular, the tee with large diameter and thick pipe wall is usually formed by this process.
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