Titanium tube annealing oxidation, how can we clean?
Degreasing, cooling the billet on the surface of the oil after the oil with a degreasing agent to remove the oil often check the oil storage environment
More reasonable way to eliminate the surface oxide film is chemical treatment. First, it is placed in the NaoH dissolved in 2% sodium hydroxide heated to 330-425 ℃, treated for 15min, then the titanium tube surface of the TiO2 was reduced to Ti0, the formation of Ti0 and alkali reaction: Ti0 12Na0H = Na2Ti03 ten H2
Scouring, titanium tube after pickling inspection should be carried out in time to perform scouring, so that the inner hole and the surface of the residual acid and pickling to remove clean, to ensure that the titanium tube details of moral light.
Pickling, pickling the purpose of removing the titanium tube in detail after annealing to produce the scale
In order to eliminate the effect of the surface oxide film on the hydrogen absorption process, titanium can be heated in a vacuum or hydrogen, and when heated to 700-850 ° C, the oxide on the surface of the titanium tube begins to diffuse into the interior of the metal, The hydrogen absorption rate is greatly increased
