Steel rod quenching and tempering equipment

1. Application scope of steel bar quenching and tempering equipment:

The main application scope of steel rod quenching and tempering equipment includes various metal rod quenching and tempering, parts quenching and tempering heat treatment, single pillar, suspension pillar, oil cylinder, piston rod quenching and tempering heat treatment, etc., and it is also used in various short-length steel pipes, The steel rod is quenched and tempered at one time.

2. Composition of steel bar quenching and tempering equipment:

The composition of steel bar quenching and tempering equipment: intermediate frequency heating equipment, spray cooling part, quenching feeding part, mechanical roller conveying part, tempering discharge part, intermediate frequency equipment closed cooling system, infrared temperature measurement system, computer control system, etc. composition.

3. Parameter control of steel bar quenching and tempering equipment:

1. The process parameters of the steel bar quenching and tempering equipment mainly control the parameters of induction heating equipment, mechanical conveying parameters, cooling capacity, heating temperature, computer automatic control, etc.

2. Induction heating equipment parameters mainly control heating equipment power, frequency, DC voltage, DC current, and intermediate frequency voltage to ensure the consistency and stability of heating parameters of different specifications of steel pipes.

3. Mechanical conveying parameters can ensure the linear speed and rotation speed required by the process by adjusting the installation angle of the roller and the motor speed.

4. The cooling capacity adopts continuous multi-stage spray cooling using water or quenching medium as the coolant, which has a strong cooling capacity. Through the control of water pressure, water flow, and water temperature during quenching, the process requirements are met.

5. Computer automatic control adopts German Siemens PLC control system, touch screen display adjustment, and supporting infrared thermometer to continuously monitor the process parameters.

4. Design analysis of steel bar quenching and tempering equipment

The steel bar is a medium carbon alloy steel with a quenching temperature of 850 to 950°C and a tempering temperature of 550 to 650°C. Quenching belongs to heating above the Curie point, and tempering belongs to heating below the Curie point. According to the characteristics of induction heating, to ensure the heating efficiency and at the same time to ensure that the temperature difference between the surface of the heated steel pipe core is small, and a qualified metallographic structure can be obtained. For the inductor design, select high-power density and low-frequency heating below the Curie point, and select low-power density and high-frequency intermediate frequency power for heating above the Curie point. According to the output of 2T per hour, the intermediate frequency power of quenching heating is 650KW, the intermediate frequency power of tempering heating is 350KW, plus auxiliary equipment electricity, the power supply transformer is S11-1250KVA/10KV/0.4KV.

5. Typical application of steel bar quenching and tempering equipment

Steel rod diameter: 20～120 mm Length: 2～20m Material:

Steel rod material: carbon steel alloy steel

Intermediate frequency power requirements: 80-8000 kilowatts

Steel bar quenching and tempering equipment quality standard: After the steel bar induction hardening equipment is processed, the yield strength, tensile strength, hardness, elongation and impact performance of the workpiece can reach the standard.

Sixth, the main features of steel bar quenching and tempering equipment:

The working process of the steel bar quenching and tempering equipment production line includes a storage rack, a quenching feed machine, a quenching heating module, a quenching discharge machine, a water spray cooling device, and has the function of automatic adjustment of the quenching and tempering temperature closed-loop control to ensure the quality of the product stability. Using induction heating technology, design the complete set of online intermediate frequency quenching and tempering heat treatment equipment for steel bars to realize the continuous quenching heating, spray quenching cooling, and continuous tempering heating of the steel bars. The computer controls the technical parameters of the complete set of equipment and heat treatment process parameters. Compared with the traditional heat treatment process, the mechanical performance index is higher, the grain size is finer, and the power consumption is lower. It is a high-efficiency steel pipe quenching and tempering heat treatment process worth popularizing.