-
-
-
-
Contact Us
Introduction to the Process and Technology of Free Forging of Forgings
Release time:
2024-11-27
Cutting and blanking: Cut the steel ingot into reasonable sizes and weights according to product requirements.
Marking and cutting: Cut the steel ingot into reasonable sizes and weights according to product requirements.
Heating (including tempering): The heating equipment mainly includes single-chamber furnaces, push rod furnaces, and table-type annealing furnaces. All heating furnaces use natural gas as fuel. The heating temperature of the steel ingot is generally between 1150℃ and 1240℃. The heating time for cold steel ingots is about 1 to 5 hours, while the heating time for hot steel ingots is half that of cold steel ingots. The heated steel ingots then enter the forging process.
Forging: The steel ingot, heated to about 1150 to 1240℃, is taken out from the heating furnace and then placed into an air hammer or hydraulic hammer by an operator. Depending on the size of the steel ingot and the forging ratio requirements, corresponding processes such as rough forging and elongation are performed, with real-time monitoring of the forged part's dimensions and control of the forging temperature using an infrared thermometer.
Inspection: Preliminary inspection of the forged blank is conducted, mainly focusing on appearance and dimensions. In terms of appearance, it is primarily checked for defects such as cracks, while in terms of dimensions, it must ensure that the blank's allowance is within the range required by the drawings, and proper records are kept.
Heat treatment: The forged part is heated to a predetermined temperature, held for a certain period, and then cooled at a predetermined rate to improve the internal structure and performance of the forged part. The purpose is to eliminate internal stress, prevent deformation during machining, and adjust hardness to facilitate cutting processing. After heat treatment, the steel ingot undergoes air cooling or water cooling and quenching treatment according to material requirements. Rough machining: After the forged part is basically shaped, it is processed into various specifications of forged parts according to product needs.
Ultrasonic testing: After the forged part has cooled down to about 20℃, ultrasonic testing is performed to meet national standards I, II, III, etc., and to inspect surface defects.
More information
Contact Us
Add：No.1 Chuangye Road, Changjiang Town, Rugao City, Nantong City, Jiangsu Province, China
E-mail: 1483594405@qq.com