Method of cleaning the inside surface of a titanium tube!

Our company produces titanium pipe bore cleaning methods:

Degreasing: after cooling the billet, use a metal degreasing agent to remove the oil on the surface and the inside appearance of the pipe. When taking the oil, pay attention to checking the orientation of the inner hole easy to store oil, to ensure complete cleaning, pickling: the purpose of pickling is to remove the oxide film produced by the annealing of the titanium tube surface. At room temperature, a certain amount of water into the pickling tank, HNO 3 and HF, HNO 3 and HF water normal ratio of HF + residual H2O), and according to the actual situation of the corresponding adjustment.

The pickling time is 10-15 minutes, according to the pickling condition. In the pickling process, one should often turn around to check, to ensure that the pickling is uniform and complete, to avoid pickling too fast or over pickling, after pickling, the titanium tube with a visual inspection method to detect the titanium tube surface and inner appearance of the oxide skin to remove the clean, remove the silver-white color, flushing.

After the pickling view, the titanium tube should be cleaned in time to remove the residual acid and pickling materials from the inner hole and the outer appearance to ensure that the details of the titanium tube are bright.
We are able to heat titanium in a vacuum or hydrogen in order to eliminate the effect of the oxide film on the external surface on the process of hydrogen absorption. When heated to 700 ~ 850 ℃, the titanium tube appearance of the oxide began to diffuse to the metal, the rate of hydrogen absorption of the titanium tube after treatment was greatly improved. However, this method eliminates the oxygen in the oxide film in the heat treatment process and enters the inside of the metal, which will not only reduce the diffusion rate of hydrogen to the inside of the metal, but also make the oxygen into the final product, and then reduce the quality of the product; at the same time, titanium tubes in the heat treatment process of the particles will also cause a certain degree of sintering, and reduce the rate of its hydrogen absorption.