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WHAT'S A three-way

Writer: admin Time:2020-04-10 13:47 Browse:

The tee is a pipe fitting and a pipe connecting part. Also known as pipe tee or three-way pipe fittings, three-way joints, used in the main pipe to branch. A tee is a chemical pipe fitting with three openings, one inlet and two outlets, or two inlets and one outlet, having a t-shaped and y-shaped, equal-diameter and reduced-diameter openings for the convergence of three identical or different pipes. III. The main function of the flux is to change the direction of the fluid. Classification by pipe diameter size division 1. The nozzle ends of equal diameter tee are of the same size. 2. The sizes of the main pipe of the reduced tee are the same, but the branch pipe is smaller than the main pipe. Divide by Craft 1. The hydraulic bulging of the three-way is a kind of forming technology of the expandable branch pipe through the axial compensation of metal material. In the process, a special hydraulic press is used to inject liquid into the tube blank with the same diameter as the tee. The tube blank is extruded by synchronously centering the two horizontal side cylinders of the hydraulic press. The volume of the tube blank becomes smaller after being extruded, the liquid in the tube blank increases with the decrease of the volume of the tube blank. When the required pressure is reached, the metal material flows along the cavity of the die under the double action of the liquid pressure in the side cylinder and the tube blank. The hydraulic bulging process of tee can be formed in one step with high production efficiency, and the thickness of the main pipe and shoulder of tee increases. Due to the large tonnage of the equipment required for the hydro-bulging process of seamless tee, it is mainly used for the manufacture of standard tee with wall thickness less than DN400 in China. Suitable forming materials are low carbon steel, low alloy steel and stainless steel with a relatively low tendency of cold work hardening, including Non-ferrous metal materials such as copper, aluminum, titanium, etc. . 2. HOT PRESS FORMING THREE-WAY HOT press forming is to press the tube blank which is larger than the diameter of the three-way into the size of the diameter of the three-way, and to open a hole at the part of the drawing branch pipe, in the process of radial compression, the metal flows towards the branch pipe and forms the branch pipe under the drawing die. The whole process is formed by the radial compression of the tube blank and the drawing of the branch tube. Different from the hydraulic bulging tee, the metal of the branch pipe is compensated by the radial motion of the pipe, so it is also called radial compensation technology. The tonnage of the equipment needed for material forming is reduced because the tee is pressed after heating. The hot-pressing tee is suitable for low carbon steel, alloy steel and stainless steel, especially for the tee with large diameter and wall thickness. Carbon Steel, cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, Argon Bitumen, PVC, etc. . According to the production method, it can be divided into top making, pressing, forging, casting and so on. GB / T12459-2005, GB / T13401-2005 AS16.9, SH3408, SH3409-96 SH3410-96, HG / T21635, DLT 695, SY / t 0510, Din 2615.

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