The soluble treatment technology of aluminum forgings in construction machinery refers to the process of treating aluminum forgings in high temperature solution to improve their mechanical properties and corrosion resistance. The technology mainly includes three steps: dissolution, quenching and aging.
① Dissolution: the aluminum forging is heated to a certain temperature, so that the metal elements in the solid solution form a solid solution dissolved in the aluminum matrix. The dissolution temperature is usually between 480 ° C and 540 ° C, and the time varies according to the different alloys, generally a few minutes to a few hours.
Quenching: The dissolved aluminum forgings are quickly cooled to fix the distribution of metal elements and avoid the formation of too large grains or precipitated phases.
③ Aging: After quenching, the aluminum forgings are kept warm for a period of time within a certain temperature range to promote the solid solution to further precipitate other phases, such as precipitated hardening phase and dispersion strengthening. The aging temperature and time are also determined according to the specific alloy material.
Soluble treatment can significantly improve the performance of aluminum forgings of construction machinery, and the specific effects are as follows:
- Improve strength: Through reasonable dissolution and aging treatment, the strength and hardness of aluminum forgings can be significantly improved.
- Improve corrosion resistance: soluble treatment helps aluminum forgings form a dense oxide layer, improve its corrosion resistance, thereby extending the service life.
- Improve plasticity: After soluble treatment of aluminum forgings, the dispersed phase precipitated at the grain boundary can improve its plasticity, so that it has better deformation ability and impact resistance.
- Improve thermal conductivity: Reasonable soluble treatment can eliminate or reduce the precipitated phase and gap in aluminum forgings and improve its heat conductivity.
In general, the soluble treatment technology of aluminum forgings in construction machinery can significantly improve its mechanical properties, corrosion resistance and heat resistance, so as to meet the needs of use in different engineering environments.
