Round steel quenching and tempering production line

The purpose of round steel quenching and tempering treatment is to improve the mechanical properties of round steel, so that round steel has good tensile, bending, fatigue resistance, increased wear resistance and other characteristics, with good strength, plasticity, toughness, suitable hardness and Improve the comprehensive mechanical properties of round steel. The round steel quenching and tempering production line is a fully automatic heating quenching and tempering production line specially designed and produced for the purpose of quenching and tempering round steel.

A. Introduction of round steel quenching and tempering production line:

The round steel quenching and tempering production line adopts induction heating method. After the round steel is heated to the quenching, tempering, normalizing and other quenching and tempering temperatures, the round steel is subjected to the corresponding heat treatment process to complete the quenching and tempering of the round steel.

The round steel quenching and tempering production line adopts fully automatic control, which improves the labor environment, improves the production efficiency and quality, reduces the heating time, and reduces the heating loss. It is suitable for mechanized mass production.

B. Round steel quenching and tempering production line composition:

The round steel quenching and tempering production line consists of a vibrating feeding table, a material turning mechanism, a roller feeding, a pressing roller device, a quenching intermediate frequency power supply, a quenching induction heating furnace, a spray device, a spray water tank, a temperature measurement mechanism, and a tempering intermediate frequency power supply , Quenching induction heating furnace, discharging mechanism, receiving device, cylinder action mechanism, HSBL type cooling tower, console, large screen display and PLC control mechanism.

C. Applicable scope of round steel quenching and tempering production line:

1. Long shaft type and long rod type round steel quenched and tempered, the general work-piece diameter is Ø30—Ø500mm

2. Round steel quenching and tempering

3. Shaft quenching and tempering of wind turbine

4. Quenching and tempering of oil drill pipe and geological drill pipe

5. Quenching and tempering of high-strength bolt materials

6. Quenching and tempering of prestressed steel bars

D. Heating temperature of round steel quenching and tempering production line:

The quenching and tempering of round steel quenching and tempering production line usually refers to the heat treatment process of quenching + high temperature tempering to obtain tempered sorbite. The method is to quench first, and the quenching temperature is: Ac3+30~50℃ for hypoeutectoid steel; Ac1+30~50℃ for hypereutectoid steel; alloy steel can be slightly higher than carbon steel. After quenching, it can be tempered at 500~650℃.

Generally speaking, the normalizing temperature of 45# alloy steel is 850℃, the quenching temperature is 840℃, and the tempering temperature is 580℃. The specific heating temperature of the quenching and tempering production line should be determined according to the composition of the round steel, the specifications of the round steel, the quenching medium and other parameters.

E. Features of round steel quenching and tempering production line

1. The round steel quenching and tempering production line has a high degree of automation, can realize intelligent management and unattended

2. The induction heating of the round steel quenching and tempering production line improves the heating speed, shortens the production cycle and improves the working conditions.

3. The one-key operation of the round steel quenching and tempering production line improves the production organization level and ensures the product quality.

4. The round steel quenching and tempering production line improves the production environment, purifies the workshop, and reduces the labor intensity of the operators.

5. The round steel quenching and tempering production line reduces the round steel oxidation process, improves the utilization rate of round steel, and saves production costs.

F. Basic parameters of round steel quenching and tempering production line

1. Quenched and tempered material: alloy steel

2. Heating temperature: quenching 800℃–1000℃; tempering 500℃–900℃

3. Round steel specifications: diameter Ø30—Ø500mm; length 1.5m–12m

4. Heating power: quenching: 750Kw; tempering: 350Kw

5. Cooling device: HSBL type cooling tower

6. Temperature measurement device: infrared online temperature measurement

7. Control system: Siemens PLC control

8. Start mode: frequency scan start