Surface treatment method of titanium tube

The alloying of the surface of the titanium tube can also be called a kind of coating. Compared with the oxide coating of palladium on titanium, it has the advantages of strong bonding force, wears resistance, and corrosion resistance. Compared with the titanium-palladium alloy, the surface content of palladium is high, which saves the precious metal palladium, reduces the cost, and also has excellent performance.

Aluminizing the surface of the Grade 5 Titanium Tube can reduce the hydrogen absorption tendency of titanium. Mixing 88% alumina, 4% aluminum fluoride, and 8% aluminum powder to coat the titanium workpiece is a good aluminizing condition, the temperature is 810℃. The thickness and structure of the aluminized layer depend on the holding time. Aluminizing by the permeation method, a thin coating about 2 mm thick can be obtained by diffusion in a short time, and the bonding force is good, and the mechanical properties of the substrate are not affected. The coating is mainly composed of titanium oxide phase, which forms a barrier layer that prevents hydrogen penetration very effectively.

After palladium is plated on the titanium tube, it can be heated by different methods to diffuse the palladium-plated layer to the surface area of ​​the titanium tube to form a titanium-palladium alloyed layer on the surface, thereby improving the corrosion resistance. Heating diffusion or laser surface remelting are both feasible in principle. Use a laser to irradiate the titanium surface to quickly melt and condense, which can quickly melt the pre-vacuum-deposited palladium film of 150 microns to form an effective palladium alloy.

The surface treatment of the Titanium Condenser Tubes has many advantages, which can increase the oxidation resistance of the titanium tube and enhance the brightness of the surface of the titanium tube. Different titanium tube surface treatment methods will meet the different performance requirements of titanium tube, which is an important manifestation of the production capacity of titanium tube manufacturers at this stage.