焊接球阀安装时采用什么办法降温

When installing the welded ball valve, what method should be used to reduce the temperature? For example, the hot forged metal can be friction welded. Friction welding can also be used for welding of dissimilar metals. Suitable for workpieces with a circular cross-section and a large diameter of 100mm.

Ultrasonic welding is also a solid-state welding method that uses mechanical energy as its energy source. When conducting ultrasonic welding, the high-frequency vibration emitted by the sound can cause strong cracks and friction on the joint surface under low static pressure, and heat it to the welding temperature to form a bond.

Ultrasonic welding can be used for welding between most metal materials, achieving welding between metals, dissimilar metals, and between metals and non-metals.

Welded ball valves are widely used in various fields, with superior quality and high-performance stability that ordinary cast steel ball valves cannot achieve. The service life of fully welded ball valves is much longer than that of cast steel ball valves.

Technical characteristics of welded ball valves:

1. The valve body structure is welded as a whole, without external leakage.

2. The valve seat is composed of PTFE sealing rings and springs, which have strong adaptability to pressure and temperature changes and will not produce any leakage within the range of use.

3. The anti leakage structure of the valve stem, with one PTFE self sealing gasket and one O-ring at the bottom of the valve stem, consisting of two O-ring seals and two PTFE gaskets, ensures no leakage.

4. The valve body material is the same as the pipeline material, and there will be no uneven stress or deformation due to earthquakes or vehicles passing through the ground.

5. The valve body is light and easy to insulate.

6. Directly buried ball valves can be directly buried underground, without the need to build large valve wells. Instead, small shallow wells need to be installed on the ground, greatly saving construction costs and time.