Aluminum forgings are prone to deformation during processing because of their relatively high softness. Therefore, some measures need to be taken to prevent deformation during processing. Here are some practical production cases and features of deformations:
- Reasonable process planning Before processing aluminum forgings, a reasonable process plan needs to be drawn up, suitable molds and processing steps. For instance, in the aerospace industry, to prevent deformation in the machining of large aluminum forgings, pre-treatment techniques such as simulation analysis of the processing process, optimization of aluminum forging design, and manufacturing processes are used to improve product processing accuracy and forming quality.
- Use of secondary heat treatment For certain aluminum forgings, such as forged aluminum alloy turbine blades, performing an appropriate annealing or solid solution process between rough and fine machining can significantly reduce residual stresses during processing, avoiding deformation.
- Reasonable material selection The material used directly affects the aluminum forging’s forming stability. Therefore, before processing aluminum forgings, reasonable material selection is necessary. For example, in the manufacturing of gas turbine impellers, a certain manufacturer used high-strength aluminum alloys to prevent deformation-induced dimensional deviation while ensuring strength.
In summary, in aluminum forging processing, reasonable design process planning, secondary heat treatment, and reasonable material selection are measures that can be taken to prevent deformation, improve product forming stability, and processing quality.
