Steel tube induction heating furnace

Steel tube induction heating furnace

1. Steel pipe induction heating furnace: steel pipe heating and heat preservation, suitable for induction heating of steel pipes with a diameter of 20mm-3000mm and a wall thickness of 5mm-50mm .

2. Summary of parameters of steel tube induction heating furnace:

3. PLC intelligent control system for steel tube induction heating furnace : 

1 , the user needs to provide a touch screen or a remote control console

2 , man-machine interface, simple operation

3 , real-time adjustment of the operating parameters

4 , the heating process control in real time, and recording function

5 , different international language switching

Fourth, the steel pipe induction heating furnace has the characteristics:
1. Intermediate frequency power control, infrared thermometer control, non-contact heating , making the workpiece heated more uniformly.
2 , steel induction furnace closed-loop control, heating speed, high production efficiency.
3. All water pipes of the induction furnace body are made of 304 stainless steel pipes to avoid water rust and scale. The cooling effect is greatly improved and the service life is long.
4. The steel tube induction heating furnace adopts a human-machine interface PLC control system, and a full touch screen controls the production of a complete set of induction heat treatment equipment.
5. The temperature control has high accuracy, fully automatic and intelligent control.
6 , steel induction furnace pollution, low energy consumption, no cracks processed workpieces, toughness and tensile strength linearity requirements to achieve customer satisfaction.
7 , steel induction furnace conveyor output system controlled by an independent drive, pneumatic automatic control, speed control segment.
8. Powerful formula management system, after selecting the steel grade and plate type parameters to be produced, the relevant parameters are automatically called.
9 , steel induction furnace with closed cooling tower for cooling, energy saving. 5. How to choose and choose steel tube induction heating furnace? Mainly to consider from several aspects:
 

1. The shape and size of the heated workpiece

  For large workpieces, round bars, and solid materials, steel tube induction heating furnaces with relatively high power and low frequency should be used; for small workpieces, tubes, plates, gears, etc., steel tube induction heating furnaces with relatively low power and high frequency should be used.

2. The depth and area that need to be heated

  The heating depth is deep, the area is large, and the overall heating should be a steel tube induction heating furnace with high power and low frequency; the heating depth is shallow, the area is small, and local heating is used, and the relatively low power and high frequency steel tube induction heating furnace should be selected.

3. Required heating rate

  If the heating speed is fast, a steel tube induction heating furnace with relatively large power and relatively high frequency should be used.

4. Continuous working hours of equipment

  The continuous working time is long, and the steel tube induction heating furnace with a slightly larger power is relatively used.

5. The connection distance between the sensing component and the equipment

  The connection is long, and even water-cooled cable connection is required, so a relatively high-power intermediate frequency induction heating furnace should be used.

6. Process requirements

  Generally speaking, for processes such as quenching and welding, you can choose a lower power and a higher frequency; for annealing and tempering processes, choose a higher relative power and a lower frequency; red punching, hot forging, smelting, etc., need If the heating effect is good, the power should be larger and the frequency should be lower.

7. The material of the workpiece

  Among the metal materials, the higher melting point is relatively large, the lower melting point is relatively small; the lower resistivity is higher, and the higher resistivity is lower. 

6. What parameters are required for the selection of steel tube induction heating furnace?

The selection of steel tube induction heating furnace generally requires the following parameters:

First: the shape of the workpiece to be heated, the outer dimensions, and the weight of the workpiece to be heated.

Second: the material quality of the workpiece to be heated (generally induction heating, only for the metal conductor material).

Third: the time required for the heating of the heated workpiece to the target temperature, and the target temperature.

Once the above three points are clear, the steel tube induction heating furnace can be selected including matching power.

Seven, what are the characteristics of the furnace body structure of the steel tube induction heating furnace?

1. Furnace structure: The heating furnace of our company is designed as an integral quick-change type. When the furnace body is changed for different heating workpieces, rapid replacement can be realized.

2. Furnace lining: The furnace lining adopts silicon carbide or integral knotting method, and the service temperature is above 1450℃.

3. Protection: automatic shutdown when the water temperature exceeds 65℃.

4. Induction furnace water-cooled track: A water-cooled track is installed on the lining of the induction furnace.

8. How to calculate the power of steel tube induction heating furnace?

  P=(0.168×200×693)/(0.24×0.6×145)=1029KW where: 0.168—average specific heat of ferrous metal; 2080—workpiece mass (Kg); 200—workpiece heating temperature rise; 0.24— Work-heat equivalent; 0.6—average efficiency (in this example, 0.6, generally 0.5～0.65, and special-shaped sensors are lower, 0.4); 145—working cycle (seconds)

Based on the above calculations, 1KHz induction heating equipment with a rated power of 1500KW can be configured to meet the needs.

9. How to choose the power frequency of steel tube induction heating furnace?

The selection of power frequency follows the principle of optimal heating efficiency and temperature uniformity (core-surface temperature difference). The higher the frequency, the higher the heating efficiency, but too high a frequency will easily cause the surface of the workpiece to burn. According to our experience, choose the frequency 2500KHZ , Can get the best heating effect, and will not cause the workpiece temperature to overheat.