The workpiece is forged and heat treated using a medium frequency diathermy furnace. What are the basic principles for determining the forging temperature range?

The workpiece is forged and heat treated using a medium frequency diathermy furnace. The forging temperature range is a very important parameter, and its appropriateness directly affects the forging quality of the workpiece. Therefore, it is very important to determine the forging temperature range of the workpiece. Today, the editor will tell you the basic principles for determining the forging temperature range.

The temperature interval between the metal forging start temperature and the forging end temperature, that is, the initial forging temperature and the final forging temperature, is called the forging temperature range.

From the perspective of improving plasticity and reducing deformation resistance, we hope to increase the heating temperature of metal as much as possible; however, from the perspective of ensuring product quality and avoiding defects during heating, it is not good for the heating temperature to be too high. In order to reduce the number of fires, save energy and improve labor productivity, we not only want the heating temperature to be high, but also want the temperature to be lower when forging is completed; however, in order to avoid severe work hardening that will cause forging cracks, the stop forging temperature should not be too low. It can be seen that these factors are contradictory and restrictive of each other, so the determination of the forging temperature range must be comprehensively considered.

Basic principles for determining forging temperature range:

(1) Ensure that the metal has good plasticity and low deformation resistance within the forging temperature range.

(2) Ensure forgings of good quality (referring to internal structure and mechanical properties).

(3) Expand the forging temperature range as much as possible to reduce the number of fires, save energy, and improve forging productivity.

When considering the above principles, we must establish the idea of ​​quality first. First, we must ensure that the billet is heated well to ensure high-quality forgings and good plasticity. At the same time, we must reduce the number of heating fires, improve labor productivity and reduce heat energy loss.