What Factors Are Related To The Quality Of Titanium Plates?

Titanium plates have high corrosion resistance and specific strength, and are widely used in electric power, chemical industry, aviation parts, building materials, sports equipment, medical and other fields, and are still expanding. From the perspective of usage and manufacturing technology, titanium plates have low price, high performance, multiple functions, and are easy to produce. From the perspective of expanding uses, titanium alloys represented by Ti-1Fe-0.35O, Ti-5Al-1Fe, and Ti-5Al-2Fe-3Mo (mass%) make full use of cheap Fe, O, N and other elements. Pure titanium plates suitable for various surface finishing processes and to improve discoloration resistance. A notable feature of the titanium plate is its strong corrosion resistance. This is because it has a particularly large affinity for oxygen and can form a dense oxide film on its surface, which can protect the titanium from corrosion by the medium and in acidic and alkaline environments. It has good stability in neutral, neutral salt water solutions and oxidizing media, and has better corrosion resistance than existing stainless steel and other commonly used non-ferrous metals.
The quality of titanium plates is largely determined by the smelting process of the titanium plate manufacturer, including the chemical composition of titanium, the cleanliness of titanium water (gases, harmful elements, inclusions) and the quality of the cast slab (component segregation, decarburization and Its surface condition), these aspects are the key control points of the smelting operation. In addition, industrial titanium plates also require sufficient hardenability to ensure uniform microstructure and mechanical properties across the entire spring cross-section. The main cause of fatigue cracks is oxide inclusions in titanium, and type D inclusions are more harmful to fatigue life than type B inclusions. Therefore, foreign titanium factories and automobile factories have put forward higher requirements for oxide inclusions in industrial titanium plates. For example, the Swedish SKF standard requires that the oxygen content in titanium is lower than 15×10-6, and D-type inclusions are lower than B-type inclusions. things. In particular, Al2O3 and TiN inclusions are extremely harmful to the fatigue life of titanium springs. In order to produce high-quality industrial titanium plates, special smelting methods such as electric furnace-electroslag remelting or vacuum arc remelting were usually used in the past.
Because titanium plates and titanium rods have special physical and chemical properties, their welding processes are very different from other metals. Titanium welding is a TiG welding process that uses inert argon gas to effectively protect the welding area. Before using argon gas, check the factory certificate on the bottle to verify the purity index of the argon gas, and then check whether the bottle valve is leaking. or malfunction. The metal in the welding area is not polluted by active gas N0H and harmful impurity elements CFeMn above 250°C. The purity shall not be less than 99.98% and the water content shall be less than 50Mg/m32 Argon: industrial grade pure argon. Coarse grain structure cannot be formed. The welding process must be in accordance with the predetermined construction sequence and must not produce large welding residual stress and residual deformation. so. Strictly follow the process quality management standards and implement quality control throughout the entire process. All factors such as manpower, machines, materials, and methods are under good control, thereby ensuring the welding quality of titanium pipes within a reasonable construction period.