30MnSi PC Steel Bar Making Machine Production Line For Pre-Stressed Concrete Construction BuildingParameters

Steel material:30MnSi,30Si.
 Product diameter:φ7.1~φ12.6mm, Standard: JIS G 3137

Running speed:  
        For makingφ7.1mm,Rated speed: 100m/min; Max. speed: 110 m/min(2.07t/h);
        For makingφ9.0mm,Rated speed: 90m/min; Max. speed: 100m/min(3.01 t/h);
        For makingφ10.7mm,Rated speed: 65m/min; Max. speed: 80m/min(3.18t/h);
        For makingφ12.6mm,Rated speed: ≥40m/min;Max. speed: 50m/min(2.94t/h);
 
 Heating temperature:
        Max.Quenching temperature:950°C
        Max.Tempering temperature:450°C
 Electricity consumption/T: at the highest quench/temper temperature, diameter isφ9.0mm, the consumption is <390KW/h per ton.
 Production line center level:1000mm

Equipment composition and Process flow: 
On-line equipment:
Pay-off stand→Wire pack up device→Mechanical descaling→Bright die and Notching die→Drawing→Straightening→1#Traction machine→Pre-heating power supply(600kW/8kHz IGBT Intermediate frequency induction heating power supply)→Temperature raising power supply(200kW/30kHz IGBT Superaudio induction heating power supply)→ Temperature raising power supply(200kW/50kHz IGBT Superaudio induction heating power supply)+Quenching/Holding→Quenching water tank →Temper power supply(300kW/8kHz IGBT Intermediate frequency induction heating power supply)+Temper and holding pipe→Temper water tank→2#Traction machine→Wire leading tank→Hydraulic shearing/reverse machine→Take up coil 1→Take up coil 2




Electrical Control:
Electrical appliance introduction

IGBT  Induction heating power supply feature

1. Main elements are Germany SIEMENS 400A/1200V big power IGBT consist parallel circle, have a good capability of frequency automatic tracking

2. Voltage/Current double closed circuit control, this mode has constant voltage operation feature, it means the voltage of inductors will not be influenced by Inlet voltage/Load resistor, etc. Constant voltage make the load heating most stable

3. Adopt the most advanced control technology in the world. By a intelligent programming device CPLD, make IGBT induction heating power supply has the function of Fixed-angle&Phase locking/Frequency automatic tracking, etc. This design can improve the stability and efficiency. Because the machine has protect function of Over-frequency or Low-frequency unlock, it can accurately protect wire heating inductors from short circuit and open circuit fault

4. Inverter circuit has function of Fixing angle/ Frequency tracking and control. When the operation condition is changing, the phase angle of inverter will not change, it has wide frequency suitable range

5. Frequency sweep method: High accuracy of phase locking frequency, small attack. Start success ratio is 100%. Power regulating range: 10%-100%

6. IGBT Induction heating device has wide application in heating treatment.






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