How to improve the mechanical properties of brass plate hardware parts through heat treatment?
Publish Time: 2025-02-17
As a commonly used material in the manufacture of hardware parts, the optimization of the mechanical properties of brass plate is crucial to improving the overall quality and performance of parts. Heat treatment, as an effective process, can significantly improve the mechanical properties of brass plate.
The heat treatment of brass mainly refers to annealing, including recrystallization annealing and stress relief annealing. Recrystallization annealing aims to restore the recrystallization state of brass, eliminate work hardening, reduce hardness, thereby improving plasticity and facilitating subsequent cold processing. Stress relief annealing is mainly used to eliminate the residual stress generated during cold deformation and machining, prevent parts from self-cracking, and stabilize their size and performance.
In specific operations, recrystallization annealing usually requires heating the brass plate to a certain temperature range (generally 500700℃), maintaining it for a period of time (the holding time depends on the thickness of the material and the required performance), and then slowly cooling it to room temperature. This process helps to rearrange the internal structure of the brass plate, thereby restoring its plasticity and toughness. Stress relief annealing is generally carried out in a lower temperature range (160400℃) to eliminate stress without causing significant changes in the material's structure.
Through heat treatment, the mechanical properties of brass plate hardware parts can be significantly improved. On the one hand, recrystallization annealing can reduce the hardness of the material, improve its plasticity and toughness, so that the parts can better absorb energy when subjected to force and reduce the risk of brittle fracture. On the other hand, stress relief annealing can eliminate residual stress inside the parts, prevent cracking and deformation caused by stress concentration, and thus improve the reliability and service life of the parts.
It is worth noting that parameters such as heating temperature, holding time and cooling rate need to be strictly controlled during heat treatment to ensure the ideal structure and performance. In addition, brass plate hardware parts after heat treatment may require further surface treatment, such as pickling, polishing, etc., to remove oxide scale and improve appearance quality.
In summary, heat treatment is an effective means to improve the mechanical properties of brass plate hardware parts. Through a reasonable heat treatment process, the plasticity, toughness and reliability of the parts can be significantly improved, thereby meeting the use requirements under various complex working conditions.
