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Process requirements:
Material: 27SiMn;
specification:
Specifications (diameter * length): Φ 42 ; length: 6000mm ;
Wall thickness: 11 mm
The steel pipe is heated to a quenching temperature by an intermediate frequency, then cooled and quenched, and tempered online.
Quenching heating temperature: 930~950°C
Tempering heating temperature: 520~ 6 50°C
Overall design overview:
The steel pipe induction heating system is actually a quenching and high temperature tempering composite heat treatment process.
The complete production line is mainly composed of a mechanical conveying device, an intermediate frequency quenching heating module, an intermediate frequency tempering heating module, a closed cooling system, an infrared temperature measuring device, a quenching cooling device, and a main console. The mechanical conveying device comprises a material storage table, a material feeding frame, a track feeding device, a straightening machine, a discharging frame, a quenching heating process of the steel pipe adopting intermittent heating, and the tempering heating adopts continuous heating; ensuring uniform temperature and reducing deformation.
Steel tube induction heating system quenching power supply selection
Serial number | Blank specification ( mm) wall thickness 11mm | Blank weight ( KG) | Heating beat ( S) | Heating temperature ( OC) | Operating power ( KW) | Design power ( kw) | Single quenching power consumption |
1 | Φ 42X6000 | 50 | 180 | 850 | 220 | 250 |
Selection of tempering power for induction heating system of steel pipe
Serial number | Blank specification ( mm) wall thickness 11mm | Blank weight ( KG) | Heating beat ( S) | Heating temperature ( OC) | Operating power ( KW) | Design power ( kw) | Single quenching power consumption |
1 | Φ42X6000 | 50 | 180 | 610 | 182 | 200 |
Power consumption: 1T heat treatment requires a total power consumption of 480-520 kWh.
Third, equipment selection, configuration and price
Serial number | Device name | Quantity | unit | |
1 | Quenching heating module | Medium frequency induction heating power supply KGPS-250/1.0 | 1 | set |
Compensation capacitor cabinet RW0.75-250/1.S | 1 | set | ||
Quenching heating sensor GTR-50 | 1 | station | ||
2 | Tempering heating module | Medium frequency induction heating power supply KGPS-200/1.0 | 1 | set |
Compensation capacitor cabinet RW0.75-200/1.S | 1 | set | ||
Tempering + insulation sensor group GTR-50 | 1 | station | ||
3 | Mechanical part | Mechanical feeding and unloading rackRSL10 | 1 | station |
Storage rack | 1 | set | ||
Mechanical conveying device RSS-11 | 1 | set | ||
All stainless steel water spray cooling system | 1 | set | ||
Straight machine | 1 | station | ||
Hydraulic station | 1 | station | ||
4 | Temperature Control System | Infrared online temperature measuring device Xi'an Leitai | 2 | set |
PLC temperature control system (console) | 1 | set | ||
5 | Cooling section | Closed-loop counterflow water cooling system ZXZ-60 | 1 | set |
Closed-loop counterflow cooling system ZXZ-20 quenching liquid cooling | 1 | set | ||
Piping system (stainless steel) 36 m pipe | 1 | set | ||
6 | Installation and shipping costs | Labor fee | 1 | set |
Freight | 1 | set | ||
Fourth, steel pipe heat treatment process and work process description:
1. Heat treatment process: steel pipe is placed on the loading platform by the crane to carry out the baling → feeding machine feeding → variable frequency feeding roller conveyor to transport the steel pipe forward → medium frequency induction heating sensor (heating) heating to 95 0 °C infrared measurement and temperature control feedback loop consisting of regulating power → induction heating furnace (normalized) normalizing induction furnace → (holding temperature) and 950 deg.] C IR temperature control feedback loop consisting of regulating induction heating furnace power up feeder → discharging .
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