What are the classification of three links?
Release time:
Jan 22,2022
what are the classification of three links?
Classification by pipe diameter
1. T-type east longitude: T-type with the same diameter of main pipe and branch pipe
2. reducing diameter t-type: t-type with branch pipe diameter smaller than main pipe diameter
Classification in the form of docking
1. Butt welding T-shaped tee: T-shaped tee pipe fittings welded after butt welding with connecting pipe fittings.
2. Socket T-shaped tee: T-shaped tee fittings welded or welded after inserting the connecting fittings into each end of the T-shaped tee.
3. strap t: each end is a strap connector, which is a t-shaped pipe fitting that is re-tightened after being inserted into the pipe fitting.
4. Threaded T-shaped tee: The pipe fitting is a T-shaped tee fitting with thread.
Classification by material
Can be divided into stainless steel t-shirt, carbon steel t-shirt, copper t-shirt, PVC t-shirt, ductile iron t-shirt and so on.
Classification by quarterly form
1. Positive T-type: T-type pipe with vertical main pipe of branch pipe.
2. Oblique T-shaped tee: T-shaped tee fittings with branch pipe and main pipe at a certain angle.
What is the application of tee?
The t-shaped pipe fittings are used in places with pipe branches. Due to their convenient use, they are widely used in chemical industry, civil construction, machinery manufacturing, shipbuilding industry and other fields.
Processing technology
A t-tee is a fitting for a pipe branch. When using smooth pipes to make T-shapes, the commonly used processes are hydraulic bulging and hot press forming.
hydraulic expansion type
The t-shaped hydraulic expansion is a process of forming the branch pipe by compensating the expansion of the shaft of the metal material. The process is as follows: a special hydraulic press is used to inject liquid into the T-shaped diameter tube blank, and the tube blank is extruded through the synchronous intermediate movement of the two horizontal side cylinders of the hydraulic press. After the tube blank is extruded, the volume becomes smaller, and the internal liquid of the tube blank becomes smaller and the pressure becomes larger. When the pressure required for the expansion of the t-shaped branch is reached, the metal material flows out along the mold cavity under the dual action of the side cylinder and the liquid pressure in the tube blank, causing the branch to expand.
The t-shaped hydraulic bulging process can be formed at one time with high production efficiency. both the main pipe and the shoulder wall thickness of the t were increased. Due to the large tonnage of equipment required for the smooth T-type hydraulic bulging process, it is mainly used in the manufacture of T-type with standard wall thickness less than DN400 in China. Suitable molding materials include low-carbon steel, low-alloy steel, stainless steel, such as copper, aluminum, titanium and other non-ferrous metal materials.
hot pressing molding
T-shaped hot press forming is a blank larger than the diameter of the T-shaped, which is flattened to about the diameter of the T-shaped, and the hole is opened in the branch part of the extrusion. After heating, the tube blank is put into the forming mold, and the mold of the stretching branch is installed in the tube blank. Under pressure, the pipe blank is compressed in the radial direction, and the metal flows in the direction of the branch in the radial compression, and the branch is formed under the stretching of the mold. The whole process is formed by the radial compression of the tube blank and the stretching process of the branch part. Unlike the hydraulically expanded T-tee, the metal in the hot-pressed T-branch is compensated by the radial motion of the pipe, so it is also called the radial compensation process.
After heating, the T-shape is pressed, so the tonnage of equipment required for material forming is reduced. Hot pressing has a wide range of adaptability to materials and is suitable for low carbon steel, alloy steel and stainless steel materials. In particular, large diameter, pipe wall thickness of the T-piece, usually use this forming process.
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