Take you familiar with the technical characteristics of the round steel quenching and tempering production line:
A Induction heating furnace equipment:
Since the round steel specification is φ20-300mm<material 30MnSi>, the quenching temperature is 950℃, so the heating equipment adopts induction heating furnace, and its power and frequency are respectively configured as follows: 250kw/2.5kHZ (SCR intermediate frequency), 100-200kw/20kHZ, 160kw/50kHZ (IGBT super audio frequency power supply) tempering temperature is 425℃, using 160kw/6kHZ intermediate frequency power supply, production and operation speed reaches 50-60m/min (φ20), heating power consumption is 300 degrees/ton, all power supplies have internal and external control The function adopts the double closed-loop characteristics of current and medium voltage to ensure that the quenching and tempering temperature does not change with external factors (such as incoming line voltage, load impedance, etc.).
B Transmission control
Because the production line is in continuous and uninterrupted working mode, the control of the entire production line adopts PLC and touch screen, and the actual transmission adopts frequency conversion to dispatch and adjust the entire production line. Compared with the traditional slip motor and DC speed regulation, the control accuracy is high and the adjustment range is Wider, more stable operation, and has the following characteristics:
1. When the production line starts, it can automatically start the transmission mechanism and each power supply, and automatically achieve a reasonable match between the speed and the power rise. When the production line is running, the heating power can be dynamically adjusted to minimize the temperature fluctuations of quenching and tempering.
2. The control system has the functions of setting, storing, adjusting, modifying, statistics, printing, etc. of 20 sets of process parameters.
3. The system has closed-loop functions such as speed, current, and voltage to ensure that the production line runs according to the best process parameters and that the product quality is not affected by artificial and environmental factors.
4. The system has manual/automatic cutting and disc changing functions.
C Tension and temperature
The production line is equipped with a tension detection and control device, so that the round steel is heated under a constant micro-tension condition. Because the temperature has a very obvious impact on the product quality, the production line uses a high-precision non-contact infrared thermometer, and has a quenching and tempering. The fire temperature closed-loop control and automatic adjustment function ensure the stability of product quality.
The round steel quenching and tempering production line can also be easily transplanted to the sleeper steel wire and threaded steel heat treatment production line.
Although the round steel quenching and tempering production line has been used in many manufacturers, it is still far from the current world advanced level, and the round steel quenching and tempering production can also be applied to the surface heat treatment of steel wire, steel pipe and other linear parts after research and development. .
1. Introduce fuzzy control technology into the control system to further improve the dynamic performance of the system, and the operating linear speed is greater than 70m/min (φ9)
2. Further improve the process, shorten the process materials, and improve the reliability of the equipment.
Round steel quenching and tempering production line: The quenching and tempering production line equipment produced by our company includes storage racks, quenching feed machinery, quenching heating modules, quenching discharge machinery, straightening machines, water spray cooling systems, tempering feed machinery, Tempering heating module, heat preservation module, tempering discharging machine, unloading rack, etc., using rational man-machine interface, PLC, industrial computer
