Spiral tube production equipment plant first depends on the thickness of the steel layer within the induction current resistance heat
      Horizontal magnetic field induction heating annealing, spiral pipe production equipment factory mainly used for cold-rolled low-carbon steel strip re-annealing and eliminate the phenomenon of aging strain annealing. The intention of recrystallization annealing is primarily the progress of the plasticity and patience. Elimination of strain aging phenomenon is to adhere to the intention of steel and three of its stability.
There are two kinds of low-carbon steel strip with the traditional annealing method, one is to maintain the atmosphere cover the whole roll strip annealing, each furnace annealing cycle is 16 ~ 24h; the second is to maintain the atmosphere after another furnace blast furnace annealing, But there is strain aging phenomenon after annealing. Both of these annealing processes have high energy consumption and low thermal efficiency. The primary process problem in the transverse magnetic field heating process of the strip and the thin plate is the problem that the uneven temperature of the mouth is unevenly distributed and the steel is oscillating under the strong magnetic field effect. This is a key issue that affects the process's extended application. The steel strip oscillates in the transverse magnetic field under the effect of the electromagnetic force, and the intensity of the oscillation increases with the increase of the magnetic field strength. The steel strip oscillates within the gap of the sensor, affecting the uniform distribution of the induced current and the surface quality of the strip. It is necessary to try to control the oscillation intensity of the steel. The Cangzhou spiral steel pipe plant ensures the speed of the steel belt. In order to reduce the vibration of the strip can be adopted under the method. High temperature annealing treatment approach 600 ~ 8001C annealing, g for high temperature cold rolled low carbon steel yield strength is very low, deformation resistance is only IOO ~ 150MPa. Because Cangzhou spiral steel plant horizontal magnetic field heating heating speed and bring the problem of poor temperature uniformity. The temperature rise of the metal in the transverse magnetic field mainly relies on the resistance heat of the induced current in the steel thickness layer. Oral fruit along the surface of the magnetic field can be evenly distributed, the temperature will be very uniform distribution. Reversal, it will show uneven internal temperature distribution of steel.