Die casting heat treating types mainly includes 7 types like annealing treatment, aging treatment, T6/T7 heat treatment and so on.
There are many types of heat treatment of die casting. And the specific heat treatment method selected depends on the type of material, the required mechanical properties and the application. The details are as following:
1. Die casting heat treating annealing treatment
Heat the die casting to about 300℃, keep it warm and then cool it to room temperature in the furnace to eliminate internal stress, stabilize the size, reduce deformation and enhance plasticity.
2. solution treatment
Heat the die casting to a temperature close to the melting point of the eutectic, keep it for a sufficient time and then cool it down to fully dissolve the components and improve the strength, plasticity and corrosion resistance. The effect of solution treatment is affected by temperature, holding time and cooling rate.
3. Die casting heat treating aging treatment
Heat the die casting after solution treatment to a specific temperature, keep it warm and then slowly cool it to room temperature to restore the stability of the alloy matrix, improve mechanical properties and reduce internal stress. Aging treatment is divided into natural aging, artificial aging, and over-aging to meet different performance requirements.
4. Hot and cold cycle treatment
Through repeated heating and cooling, the solid solution lattice shrinks and expands, improving dimensional stability, suitable for manufacturing parts.
5. Die casting heat treating:T6 heat treatment
including solution treatment and complete artificial aging. After T6 heat treatment, the die casting has higher hardness and strength, but it should be noted that heat treatment may cause dimensional deformation or pores.
6. T7 heat treatment
including solution treatment and stabilization treatment. Die castings after T7 heat treatment are more difficult to correct artificially.
7. Surface strengthening treatment
including chemical heat treatment methods such as carburizing, nitriding, carbonitriding, as well as laser surface treatment and electrospark deposition metal ceramic process, etc.
Haichen die casting machine
Haichen is one Chinese die casting machine manufacturer for more than 10years. We produce both high pressure cold chamber die casting machine and hot chamber die casting machine.They have durable and highly precise features. Haichen also produce die casting machine auxiliary equipment. Such as conveyor, vacuum machine, mold temperature controller, industrial robot, sprayer and so on.
These heat treatment methods significantly improve the mechanical properties, corrosion resistance and dimensional stability of die castings by changing their microstructure and organization, thereby extending the service life of die castings and improving their processing quality.
