Titanium metal pneumatic valve selection guidelines

titanium pneumatic valve is mainly used titanium metal materials in the corrosive environment oxide film has good stability and the passivation ability, this feature to resist a variety of harsh conditions of strong corrosion.
titanium pneumatic valve can resist working environment medium corrosion, the key lies in the surface of the oxide film 'blunt' chemical stability in the corrosive medium. Weak for neutral, oxidizing, reducing medium environment 'blunt oxide film' itself has a good stability. For high or low PH the reducibility of corrosive medium, to improve the stability of the oxide film 'blunt', by adding corrosion inhibitors ( Such as air, water, heavy metal ion and the anion, such as titanium ion surface modification treatment, the methods of anodized, to enhance 'titanium' in reducing medium corrosion resistance and surface hardness to meet the use requirement.
pneumatic valves should not be used for titanium concentration & gt; % or contain & gt; % NO red smoke free nitric acid;
titanium pneumatic valves should not be used in the moisture content is below. % dry chlorine, pure oxygen ( PO> There are natural explosion in %;
titanium pneumatic valve of hydrogen corrosion medium, in addition to the consideration of corrosion, hydrogen should fully pay attention to the dangers of hydrogen embrittlement of titanium pneumatic valve;
titanium pneumatic valves should fully consider and stress corrosion cracks in the corrosion medium point orientation;
titanium using pneumatic valve temperature should not be more than ℃, when more than suggest to switch to heat resistance of titanium alloy materials.
pneumatic valve material selection, should fully consider the working condition of corrosive medium of working temperature, medium composition, concentration of each ingredient, moisture content and so on four aspects, be special considerations titanium pneumatic valve and stress corrosion cracks in the working condition in the medium point, natural explosion, due to various reasons make the titanium absorbing hydrogen produces catastrophic damage factors such as hydrogen embrittlement. It is forbidden to titanium pneumatic valve in the failure of the above working environment.