Steel pipe heating furnace heating technical requirements

1. Heating principle of steel pipe heating furnace: The steel pipe heating furnace adopts the principle of electromagnetic induction heating, which provides a variable frequency current to the induction coil through a variable frequency power supply, and generates a magnetic field inside the coil to heat the steel pipe, which belongs to the non-contact heating mode.

2. Technical requirements for heating of steel pipe heating furnace:

The steel pipe heating furnace must first ensure that the round steel used as a steel pipe has a uniform heating temperature and that the temperature difference between the core surface is less than 30 degrees, so as to ensure that the capillary wall thickness is uniform, the ovality is small, and the geometric dimension accuracy is high;

2.1. The axial temperature difference heated by the steel pipe heating furnace is less than 40 degrees, to ensure that the inner and outer surfaces of the capillary tube should be relatively smooth, and there should be no defects such as scarring, folding, and cracks;

2.2. Steel pipe heating furnace heating steel pipe round steel should be heated according to a certain rhythm speed, which should be consistent with the piercing speed and rolling cycle, so as to adapt to the production rhythm of the entire heating piercing production line, and make the final rolling temperature of the capillary tube meet the requirements of the rolling mill. Require.