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Big diameter welded pipe black annealing machine
Big diameter welded pipe black annealing machine is the special machine for heat the steel pipe to solution temperature and then cool it to room temperature.This machine adopts the advanced induction heating power supply, the new type DSP+IGBT power supply.It uses IGBT inverter,DSP precision control,air-cooling structure(water cooling for induction coil),reduce the loss of system.It has perfect self-protection and self -diagnostic function,saves 15% energy comparing with the similar product.
Application
Tube O.D.:6mm-762mm
Tube thickness:0.5-20mm
Material:300 series austenite,400 series ferrite,dual-phase steel
Power Supply: 60KW------1500KW
Notes: Match power supply according the pipe diameter,pipe thickness and production speed.
The point description
Energy saving effect analysis :
Energy consumption influencing factors :
1. Increase insulation section: thick-walled steel tube increases energy consumption by about 10% to 20%, thin-walled steel tube increases energy consumption by more than 20%, and when wall thickness is very thin, energy consumption increases even more than 100%. When there is an insulation section, for the same kind of steel pipe, the faster the pipe, the lower the energy consumption.
2. (conservative value) : IGBT power supply reduces energy consumption by about 5% compared with SCR power supply, and air cooling is about 3% lower than water cooling, so we reduce energy consumption by about 8% compared with SCR water cooling power supply.
3. Frequency factor: when the frequency is high, the energy consumption is low, especially for the thin-walled pipe.
4. Sensor factor: the larger the gap, the higher the energy consumption.
5. Target temperature factors: the following are all based on 1050 degree, and the energy consumption of 1100 degree is more than 10% higher than 1050 degree (thermal radiation loss is proportional to the fourth degree of temperature).
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