How to control the quality of titanium tube vacuum annealing?
Titanium alloy annealing a lot of classification, commonly used in vacuum stress annealing, double annealing and isothermal annealing.
To stress annealing: 480 ~ 600 ℃, 15 ~ 240min, it is recommended to take half an hour, air cooling or with the furnace cold. If the vacuum annealing is to remove hydrogen (surface treatment is easy to absorb hydrogen brittle), the pressure control in the -2 square, temperature 600 ~ 750 ℃, holding 1 hour.
You said TA1 annealing, it is recommended to see GJB 3763-1999 "titanium and titanium alloy heat treatment specifications" requirement. Is this: annealing: 650 ~ 720 ℃, 15 ~ 120min, it is recommended to take the lower limit of time, air cooling or with the furnace cold;
If you need hardness, pipe wall thin, it is recommended isothermal annealing, if it is TC6 hardness to HB270 ~ 365. If you really want to know how to heat in the end, I suggest you figure out why, what is the material. Not simply that titanium alloy, plus vacuum annealing on the line.
