Medium frequency induction heating equipment for steel pipes or oil well pipes or drill pipes

You definitely don't know the heating process of special workpieces. How can the workpiece steel pipes, oil well pipes or drill pipes be heated using medium frequency induction heating equipment to meet their heating requirements?

1. Workpieces on the storage table: The workpieces steel pipes, oil well pipes or drill pipes are arranged neatly on the storage table; the storage table surface is tilted 2-5 degrees, and the workpieces are hoisted to the storage table by the overhead crane and automatically arranged in order Arrangement: The material storage table blocking device is an eccentric wheel structure. For φ60~φ139.7, adjust the eccentric wheel at different angles so that the material turning device can only turn over one piece of material at a time.

2. Automatic alignment and positioning of workpieces: The workpieces steel pipes, oil well pipes or drill pipes are sent from the storage rack to the first station - the alignment and positioning roller table. The positioning roller table consists of four rollers and is equipped with a material receiving switch. The rollers at both ends are driven by motors and reducers to align the workpieces.

3. The workpiece enters the heating roller table: the workpiece steel pipe or oil well pipe or drill pipe enters the heating roller table and is heated evenly. A V-shaped roller and a variable frequency speed regulating motor and reducer are installed on the heating roller table at an angle. The V-shaped roller speed Using variable frequency speed regulation, the stepper loader is operated by a sensor to smoothly lift the workpiece on the alignment rack and roll it to the variable frequency feeder installed at an angle of 8-20°. The variable frequency feeder moves forward at a set speed. Feeding, the frequency conversion feeder is a single-roller drive with adjustable speed and height. The workpiece steel pipe or oil well pipe or drill pipe is placed on a V-shaped roller and rotates in the induction heating coil to evenly feed the workpiece steel pipe or oil well pipe or drill pipe heating.

4. Closed-loop temperature control: Install a two-color infrared thermometer at the outlet of the induction heating coil to monitor the temperature of the workpiece, and feed the signal back to the intermediate frequency power supply to automatically adjust the output power of the intermediate frequency power supply to form a closed-loop control system to control the product process temperature. within the allowable error range.

5. Continuous spraying along the line makes the workpiece quickly, evenly and completely quenched: the heated workpiece steel pipe or oil well pipe or drill pipe enters the spray quenching zone, and a spray quenching device is used to continuously spray water onto the surface of the heated steel pipe for complete quenching Through the pipe wall, the effect of rapid and even heat dissipation, strong spraying for 5-30 seconds, two sets of large-flow high-pressure water pumps are selected, the pressure is 125 meters per hour, the water circulation volume is 1000m↑[3]/h, and the total power is above 500kW. Ensure that the steam film generated on the surface of the workpiece is destroyed.

6. Draining table on the workpiece: remove the water left in the workpiece steel pipe or oil well pipe or drill pipe after quenching and bring it into the tempering coil. Use the draining table to tilt in two directions to achieve the purpose of water removal. Tilt in one direction to make the workpiece The steel pipe or oil well pipe or drill pipe automatically shifts. The other direction is tilted 2-5° in the axis direction of the workpiece steel pipe, oil well pipe or drill pipe, so that the workpiece steel pipe, oil well pipe or drill pipe automatically shifts on the draining table. At this time, the water in the workpiece steel pipe or oil well pipe or drill pipe is drained. After a few minutes, it is lifted up to the tempering line roller table by the pneumatic loading machine.