Titanium, Zirconium and Tantalum alloys offer an excellent resistance to corrosion in aggressive environments such as mineral and organic acids, alkalides, salts and other gaseous mediums. This corrosion resistance is due to the affinity these materials have for oxygen and to the protective layer formed, which protects the metal from aggressive mediums. This protective coating forms immediately on contact with air.
However, this useful characteristic means that the working out, casting and welding of these materials must be done with much care. It is necessary to have complete process control at every stage of transformation of these materials when they are being used to manufacture industrial equipment. Guichon Valves already has a large experience in this area, having been equipped with a vacuum chamber for over 40 years. This allows titanium grades 2, 5 and 7 and zirconium grades 702, 704 and 705 to be welded whilst strictly respecting the quality requirements such as hardness, colouring and non-porosity of welded joints.
The whole set of measures taken, linked with the flexibility of the fabricated technology, allow Guichon Valves to supply gate, globe, piston, ball and check valves made of Titanium grades 2,5, and 7, Zirconium grades 702,704 and 705 and Tantalum alloys of diameters going from DN 1/2″ to DN 10″ and class 150 to 600 Lbs according to diameters.
