How to improve the mechanical properties of copper forgings by heat treatment?

The mechanical properties of copper forgings can be improved by heat treatment. The following is the general heat treatment method and its role:

Solution Treatment: The copper forgings are heated to the solution temperature and kept for a period of time before cooling quickly. The main function of solid solution treatment is to dissolve the alloying elements uniformly in the copper matrix, eliminate the precipitates and grain boundary phases in the structure, and improve the plasticity and toughness of the material.

Deformation and Aging Treatment: First of all, copper forgings are deformed (such as cold working, forging, etc.), and then aging treatment. The machining deformation can introduce dislocation and refine grain, improve strength and hardness; Aging treatment by keeping at the appropriate temperature for a period of time, the alloy elements precipitate to form a dispersed precipitate, improve the strength and tensile properties.

Tempering: Tempering is the cooling of copper forgings that have been quenched or tempered after heating to the appropriate temperature. Tempering treatment can eliminate residual stress, improve toughness and ductility, so as to improve impact resistance and toughness of copper forgings.

It should be noted that the specific heat treatment methods and parameters should be optimized and determined according to the composition of the copper alloy and the required properties. Parameters such as temperature, holding time and cooling mode during heat treatment will affect the final performance, so experiments and tests are needed to determine the best treatment plan. At the same time, after heat treatment, it is also necessary to carry out appropriate surface treatment, such as deoxygenation, polishing, etc., to ensure the surface quality and performance of copper forgings.