Related processes for preparatory heat treatment of metal billets using high-frequency induction annealing machine

Metal billet refers to a metal workpiece that is in an untrimmed or unfinished state and still needs further processing or processing, also known as "blank". Using a high-frequency induction annealing machine to perform preparatory heat treatment on metal billets can prepare the microstructure for its subsequent processing and forming, and improve its comprehensive mechanical properties such as appearance, hardness, toughness and plasticity. Different blank forming methods require different structures, so the heat treatment processes we need to adopt are also different. Next, let’s learn about the process of heat treatment of metal billets.

1. Spheroidizing annealing: cold-action steel requires us to use this equipment to perform spheroidizing annealing to obtain a uniformly distributed spherical carbide structure on the ferrite matrix. The steel billet annealed by this equipment has low hardness and good plasticity, and is not prone to cracks during cooling and forming. Commonly used annealing processes include: ordinary spheroidizing annealing and isothermal spheroidizing annealing.

2. Recrystallization annealing: during the cooling process of the metal billet, due to work hardening, it needs to be subjected to intermediate annealing, that is, recrystallization annealing, to restore the mechanical properties of the material before cooling. It is worth noting that when we use a high-frequency annealing machine to anneal metal billets, we should consider the relationship between the deformation of the billet and the grain size during recrystallization to prevent coarse grains.

Using a high-frequency annealing machine to heat treat metal billets can improve the mechanical properties of the billet and make the processed workpiece have a flaky pearlite structure, so that the billet heat-treated by this equipment is not easy to break, has good toughness, and has a smooth surface. At the same time, we also need to know that carbon steel and low carbon low alloy steel are generally normalized, while medium carbon alloy steel requires complete annealing.

The above content is what I will share with you today about the process of preparatory heat treatment of metal billets using high-frequency annealing machines. The heat treatment process is a relatively complex metal processing process. Therefore, if you still don’t understand the relevant process, you can check the information on the relevant website. Of course, you are also welcome to contact us directly.