After sandblasting, titanium material needs to undergo pre-treatment before coating,to achieve the effect of removing surface sand formed by sandblasting, and activating titanium material.
Generally, hot oxalic acid aqueous solution is used as the cleaning agent. Etching can be carried out on the surface of titanium material, to clean the embedded sand and remove the oxide film on the surface of titanium material, thereby better serving the coating process.
Cathodic protection uses epoxy encapsulation of titanium tube anodes, which connect the cable to the titanium tube through copper connectors to evenly distribute current to the surface of the titanium tube. At the same time, the copper connectors are isolated from the external environment, ensuring that the cable and copper parts are not corroded.
The rotating coating method is adopted for the inner wall coating of titanium pipe. The uniformity and consistency of the coating can be ensured by using a roller brush with a larger inner diameter than the titanium pipe and Spin coating.
The coating process, involves preparing inorganic salts of platinum group precious metals, such as Ir and Ru, into an organic salt solution with a certain concentration,and proportion according to the process requirements. The solution,is evenly coated on the surface of the titanium substrate,according to the coating area, dried in a drying furnace,at a certain speed…
