Processing Of Titanium Plates And Tubes

(1) The modulus of elasticity of titanium is low in relation to its tensile properties, so a large rebound margin must be taken into account in compression molding and roller operations. It is because of the lower modulus of elasticity that the cross-section of a titanium part is slightly larger than that of the same steel part in order to achieve the same degree of stability.
(2) Titanium is easy to machine, but to take into account its tendency to bite stick (larger than stainless steel) and low thermal conductivity, must be commonly used machining techniques and threads, the design of the support surface for appropriate improvements. At least have a rigid machine tool, sharp tools, with slow speed, large cutting volume, and leave room for chip removal, but also recommended the use of large amounts of cooling lubricants.

(3) The coefficient of thermal expansion of titanium is 75% of carbon steel. In the equipment design and manufacture of these two materials need to make the combination, should pay special attention to this point.
(4) Because titanium is a kind of active metal, when heated to more than 600 ℃, it is easy to combine with the oxygen in the air, so generally do not recommend titanium in the case of higher than this temperature for long-term use.
(5) Industrial pure titanium at a temperature of more than 150 ~ 200 ℃, the mechanical strength is rapidly reduced.
(6) Hydrogen diffusion in titanium faster than oxygen, and therefore in the thermal processing before the use of the furnace should be micro-oxidizing atmosphere, so that although it will produce a relatively thin film of oxide, but to avoid the depth of hydrogen may be caused by pollution.
(7) softer industrial pure titanium plate, annealing treatment is easy to cold forming; harder industrial pure titanium and Ti2.5Cu need medium temperature processing, and for Ti6Al4V processing temperature is best for 600 ~ 700 ℃.
(8) can be obtained through the explosion welding of thin titanium plate and thick steel plate composite plate, can be used for the manufacture of high-pressure, high-temperature containers and heat exchangers. But use it to replace the whole titanium or set of titanium lining plate, in the economy is not cost-effective.