The basic process of heat treatment of titanium and titanium plates

The basic process of heat treatment currently used mainly stress relief annealing, fully annealed and solution and aging treatment. Other annealing process, such as isothermal processing, multi-stage annealing process applications such as multi-stage aging rarely in production.

Stress relief annealing. The purpose is to eliminate stress relief annealing internal stress generated in the cold,titanium standard parts cold forming and welding and other processes. This mainly occurs during recovery, sometimes also called incomplete annealing. Stress relief annealing temperature is not too high, generally below the recrystallization temperature. Β-type titanium alloy can be heat treated to the recrystallization temperature can be below the temperature. But this time if more than a certain time often produce aging effects or aging effects caused by birth, and therefore the solution treatment is sometimes used to eliminate stress.

Elimination of the time required for stress relief annealing to workpiece thickness, small residual stress, and the annealing temperature used is desirable to eliminate the degree of stress. When considering the thickness of the workpiece reference to the case of stainless steel. As for the choice of temperature and degree of hope to eliminate stress generally be determined by experiment. Heating effect of temperature and holding time on TC4 titanium residual stresses. Obviously the heating temperature is high, the time required is short.

Stress relief annealing cooling method commonly used air cooling. For large size and shape complex parts can also be used furnace cooling. Stress relief annealing of titanium and titanium alloy system. Should be based on the above principles, as determined by the test within the recommended temperature and time range. It should be noted,titanium whole distributor stress relief annealing of titanium weldments often associated with subsequent heat treatment uniform consideration. Orthopedic and thermal stress relief annealing process for the cold forming parts, but should avoid contamination of the workpiece fixture.