Titanium Metal Ingot

CO A remelting (CHEER) elements in expensive master alloys 

H (VIM) or slag inclusion or applications (sporting goods, medical 

Country Company name (acronym) Plant location Nameplate capacity (tonnes) 

Russia Verkhne-Saldinsky Metallurgical Production Organization (VSMPO) Verkhnaya Saida 100,000 

Japan Sumitomo Titanium (formerly Sitix) Amagasaki, Osaka 25,000 

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Table 4.46. Nameplate capacity (2003) of titanium metal ingot producers worldwide...

Key words electroslag melting, magnetic field, metal pool, titanium alloys, ingot. 

An ingot of pure titanium metal is heated at 1000 °C in an atmosphere of ammonia, so that nitrogen atoms diffuse into the bulk. The diffusivity of nitrogen in /3-titanium, the stable structure at 1000 °C, is 5.51 x 10 m at this temperature. What is the thickness of the surface layer of titanium that contains a concentration of nitrogen atoms greater than 0.25 at% after heating for 1 hour ... 

The resulting titanium is purified by reaction with acids, including aqua regia (a 1 3 mixture of concentrated nitric and hydrochloric acids). This final product can then be cast into ingots under vacuum. The final titanium metal product is very expensive, not only because of the chemicals involved but also because production is a batch process and not continuous. 

Finally, numerous steps are required between the raw ore feed and the final pure metal ingot, and wastage of 50% is common in fabricating titanium parts. 

Major Producers of Titanium Metal Sponge and Ingot... 

The small fraction of titanium dioxide converted to metal passes through a chain of elaborate processes that aims at producing highly pure titanium in the form of ingots, slabs, etc. which may then be further processed to semis such as sheets, tubes, bars, etc. 

Ingots are made in a water-cooled copper crucible, by melting the metal with an arc struck between it and a compressed titanium sponge cathode, the operation being conducted in an atmosphere of argon. Very pure titanium can be made by the method of Van Arkel and De Boer in which Til4 vapour is decomposed on a hot wire. 

All the alloys studied were smelted on a base of commercial titanium alloy of technical purity BT1-0 (Fe<0.25 Si<0.1 C<0.07 N<0.04 O<0.2 others<0.3. Compositions are provided in wt. %) with plasma-arc method in argon atmosphere. The BT1-0 alloy itself is determined as pseudo a-alloy, which has coefficient of P-phase stabilization kp = 0.05 [4, 5], Temperatures of smelts were between 1620-1660 °C. Liquid metal was decanted into graphite mold inside of melting chamber. Obtained cylindrical ingots of 60 mm diameter and 150-400 mm length were cooled to 600 °C inside of chamber and after that to room temperature in air outside of equipment. 

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