Casting made of titanium
An important property of titanium casting is its small linear expansion thermal coefficient, corrosive resistance, heat resistance, non-magnetization. A winning strength-to-weight ratio (a density = 4,45 g/cm³) decreases a weigh of constructions by a factor of 1.6 in comparison with steel. It notably decreases a load on actuated parts. Thereby, there increases working lifespan of equipment. Titanium possesses a heat conduction that is 12% bigger than stainless steel has. It is also 2 times higher than have steels alloyed with molybdenum (6%). These properties increase an efficiency of heat exchangers. It is very valuable in aggressive environment.
Resistance of titanium alloys to cracking, to grain-boundary, crevice corrosion are very important things. These alloys are resistant to any atmospheric conditions: in sea and fresh water, in contact with azotic acid, moist soil, in atmosphere of chloride, oxide of chlorine, sulfur, chlorine salts of different concentration. Speed of corrosion constitutes up to 0,002 mm/h. Titanium is resistant in environment of gas and oil-products; in mixture of KOH + NaOH with concentration of not more than 40%; in atmosphere of molten sulfur up to a temperature of 240 °C; in boiling ammonia solutions up to 20%; in atmosphere of SO2 and commercial gasses; in aqueous salt solution of cupric sulfate, and sodium carbonate. Titanium is also resistant in organic compounds at a temperature up to 100 °C: in dichloracetic, glacial concentrated acetic acid, in chloro-acetic, milk acid, acetic anhydride, tartaric acid up to 100 °C at a pressure of 130−140 atm. It is resistant in fresh water at a temperature of 260 °C.
|Temperature at which are obtained actual characteristics:||20°С|
|Lineal expansion coefficient αx106 at 100 °C [1/ °С]||8.2|
|Elasticity module of 1 sort Е [MPa]x10-5||1.12|
|Specific heat of alloy at 200 °C [J (kg*deg)]||0.586|
|Heat conduction coefficient, l [V/(m*deg)]||8.37|
|Specific electric resistance Оmh-mm2/m||1.6|
It is hard to obtain a pure titanium because it has a high self-cost. A labour intensity of treatment also increases a price for finished goods.
Titanium casting is indispensable in manufacture of pumps, centrifuges, distillation kettles, baking ovens, crystallizer pans for chemical, hydrometallurgical, petrochemical industry. It is also used for needs of municipal engineering. There are much-requested fitting details of special purpose: valve bonnets and disks (center-to-face, safety relief, face-to-face); cases, clinket gate disks, ball cases, balls for chemical and oil and gas output industries; wheels (impellers) of centrifugal type pump; scroll casing; for mining and concentrating and petroleum refining industries.
Titanium casting supplier
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