Mechanical and chemical properties of steel after heat treatment by induction heating (I)

1. Compared with the traditional steel heat treatment process, induction heating rapid heat treatment has obvious advantages in the following aspects: significantly improve the mechanical properties of steel, improve the surface quality of steel; Shorten the heat treatment period of steel and save energy; Improve working conditions and reduce environmental pollution; Realize mechanization and automation of heat treatment process. We use data from both mechanical and chemical properties to demonstrate the positive role of induction heating technology in the application of steel heat treatment.
   

(1) Greatly improve the mechanical property and surface quality of steel

Induction heating makes the steel temperature rise very high in a short time, and the retention time under the austenitizing temperature is very short, so the quenching or normalizing structure of fine grain can be obtained. This fine grain structure creates good conditions for the ideal finished structure after tempering or aging treatment of the steel. Therefore, compared with the ordinary heat treatment, induction heating can obviously improve the mechanical property of the steel, and improve the tensile strength and yield strength of the steel.

Mechanical Properties of Steel Pipe after Quenching and Tempering Treatment

(2) Improved steel strength and retained toughness

Induction heating and tempering treatment can improve the tensile strength and yield strength at room temperature by more than 10%

Comparison of High Temperature Endurance Strength of 12Cr2WMoVTiB Hot Steel

(3) Improve the uniformity and stability of mechanical properties of steel

During rapid heat treatment by induction heating, the steel passes through the inductor and cooling device at constant temperature and speed one by one. Heat treatment temperature and time are strictly controlled by automatic control system. Therefore, the quality of the whole batch of steel after treatment is stable, and the performance of the steel bar is uniform. These features are difficult to achieve with conventional heat treatment processes.

Hardness homogeneity of 45MnMoB steel pipe after heat treatment

In this article we introduce three main advantages of induction heating.But there are another four advantages not been introduced,they will be introduced in our next article,please save our website to get further information.click here