The purpose of pre-forging heating of metal blanks is to enhance metal plasticity, reduce deformation resistance, facilitate flow and shaping, and achieve a favorable post-forging structure. High temperatures evaporate moisture on the product surface, making it easier for water droplets to form on the metal after cooling. Therefore, it is crucial to use rust preventive products promptly after processing.

After hot forging parts cool down, the surface should not be touched directly to prevent leaving marks. Use the scarless treatment method, followed by "Yongyu" brand rustproof bags and desiccants to ensure the parts are not corroded or oxidized.