Quenching Treatment Of PE Thermal Insulation Pipes

PE Thermal Insulation Pipes is an economical section. Originally produced and exported abroad, China introduced the advanced technology of the former Soviet Union in the 1950s and produced the first seamless steel pipe. Seamless steel tubes are mainly used in the fields of crude oil exploitation and processing, pipeline transportation, mechanical processing, large-scale stadium construction, and boiler manufacturing. Different application areas have different requirements for the performance of steel. In terms of crude oil extraction, seamless pipes are used in oil well pipes, so seamless pipes for oil well pipes must undergo a quenching and tempering process.

There are two kinds of quenching processes for SSAW Steel Pipes, one is water quenching in the tank and the other is water quenching outside the tank. There are three methods for water quenching outside the tank, namely, water spray on the outside of the steel pipe, water spray on the inner surface of the steel pipe, and water spray on the inner and outer surfaces of the steel pipe; the water quenching process in the tank has the following methods:

1. Dip quenching, this is the simplest method, but this method tends to bend the tube and the surface may form a vapor film.

2. Dip quenching and axial injection of water in the steel pipe, but the method has certain requirements on the length of the steel pipe, and the quenching performance exceeding a certain length is not good.

3. Dip quenching and axial spraying and outer spraying water in the steel pipe. The structure of the quenching device is complicated, and the nozzle is blocked by contaminants due to poor control.

4. Dip quenching and axially spraying water inside and outside the steel pipe. The device of the method is controlled by computer and has good quenching performance.