Seamless Petroleum Cracking Pipe Supplier-GNEE
- The drawn expanded petroleum cracking pipe undergoes at least two expansion passes. Each pass adopts the existing pipe expansion method. Except for the last pass, after each pass of expansion, the snap ring is opened. ; Two friction wheels on the support connected to the lifting mechanism lift the petroleum cracking pipe away from the pipe expansion platform; a friction wheel connected to the rotating device rotates, driving the steel pipe to rotate at an angle, and the rotation angle should be sufficient to allow the oil cracking pipe to be lowered. The original contact point between the oil cracking pipe and the pipe expansion cap is no longer in contact with it; the lifting device is lowered and reset, and the two friction wheels are separated from the steel pipe. The steel pipe is supported by the pipe expansion cap, and the snap ring is locked to proceed with the next pipe expansion. By testing the optimized heating temperature of the steel pipe in hot processing processes such as extrusion and drawing through the test mold, and by adjusting the process position of the final heat treatment of the steel pipe and rationally selecting the normalizing and tempering temperatures of the heat treatment, the mechanical performance indicators of the petroleum cracking pipe were obtained. further improvement. Petroleum cracking tubes are mainly used to manufacture superheater tubes, reheater tubes, air guide tubes, main steam tubes, etc. for high-pressure and ultra-high-pressure boilers.
- Type
Boiler tubes are divided into general boiler tubes and high-pressure boiler tubes according to the high temperature performance they withstand. Whether general boiler tubes or petroleum cracking tubes, they can be divided into various steel pipes according to their different use requirements.
- Eddy current testing enables fast and automated testing. Eddy current testing can be applied to the detection of high-temperature metals because metals are conductive at high temperatures. Eddy current testing of petroleum cracking tubes is also suitable for testing special-shaped materials. As long as the coil is made into various shapes, it can be tested. Petroleum cracking pipes are often exposed to high temperature and high pressure conditions when used. Under the action of high temperature flue gas and water vapor, the pipes will oxidize and corrode. Steel pipes are required to have high lasting strength, high resistance to oxidation and corrosion, and good structural stability. The water supply speed should not be too fast. After lighting the fire, you should always pay attention to the water level in the furnace. If the water level rises above the maximum water level, sewage should be drained to lower the water level. If special noises occur in the furnace, the boiler worker should check immediately and stop the furnace for inspection if necessary. During the operation of petroleum cracking tubes, the water level in the bubble should be maintained at the specified level, and the pressure should not exceed the boiler operating pressure. Boiler workers should always monitor the steam pressure gauge. When the oil cracking pipe is full of water, it should be drained in time to stop water sharing and restore the water level to normal. After shutting down the boiler, wait until the water has cooled down to below 70 degrees before the boiler water can be drained. After it is drained, the boiler water can be chemically treated.
