Forgings heating purposes and requirements

The heating of billet before forging is an indispensable and important link in the whole forging process, which has a direct impact on improving forging productivity, ensuring forging quality, saving energy consumption and reducing product cost. The following is the purpose and requirements of forging heating:

1. Purpose of heating:

Improve the metal plasticity, reduce the metal deformation resistance, make it easy to form, and obtain good forgings after forging structure and mechanical properties.

2. Heating requirements

(1) Under the condition of temperature conductivity and internal stress allowed by metal materials, heating to a predetermined temperature at a fast speed, improving efficiency and saving energy.

(2) as far as possible to reduce the heating metal absorption of harmful gases, such as oxygen, hydrogen, nitrogen and other gases, reduce oxidation, decarbonization or hydrogen embrittlement defects, improve the quality of heating.

(3) in the low temperature heating stage, it is necessary to prevent excessive temperature difference between the outer layer and the core of the metal section due to improper heating, resulting in excessive thermal stress, and then superimpose other internal stresses, causing material rupture.

(4) Accurately implement the given heating specifications, such as heating temperature, speed, time and heat preservation and other heating conditions, to prevent overheating, overburning and other defects.

this pipe clamp produced by Tongxin precision forging company