The Present Situation of The Application of Titanium And Titanium Alloy And the
Development Trend Analysis
Titanium and its alloy with light weight, strong strength, heat resistance,
corrosion resistance and many other excellent characteristics, known as
"the future of metal", is a new kind of structural material with
development prospects.
Titanium and its alloys in aviation and
space industry not only has very important application, and has already begun
in chemical, petroleum, light industry, metallurgy, power generation, etc.
Widely used in many industrial departments.
The application of titanium in chemical and
other departments
Another significant feature of titanium is
corrosion resistance is strong, this is due to its affinity for oxygen particularly
big, can generate on its surface a dense layer of oxide film, can protect the
titanium from corrosion medium.
Titanium in most aqueous solution can be
generated in the surface passivation oxide film.
Therefore, titanium in acid, alkali,
neutral salt aqueous solution and oxidizing medium has a good stability, than
the existing stainless steel and other non-ferrous metal corrosion resistance
are good, even with platinum.
However, if in a medium, can continuous dissolved titanium oxide film on the surface,
the titanium in the medium will be from corrosion.
Titanium in hydrofluoric acid, thick or
hot, for instance, hydrochloric acid, sulfuric acid and phosphoric acid, due to
the solution of titanium surface oxidation film, so the titanium by corrosion.
If adding oxidant or some metal ions in the
solution, the surface of titanium oxide film can be protected, the stability of
the titanium belongs to increase at this time.
The chemical industry
Titanium in all kinds of acid, alkali, salt
medium, in addition to the above four kinds of inorganic acid and aluminum
chloride corrosion resistance is very strong, has a good stability.
So, titanium is an excellent corrosion
resistant materials in chemical industry, has been more and more widely used.
For example, the use of titanium anode in
chlor-alkali industry and titanium wet chlorine gas cooler, received good
economic effect, was regarded as a revolution in the chlor-alkali industry.
The oil industry
Compete with titanium in organic compounds,
in addition to the temperature of the five kinds of organic acid, formic acid,
acetic acid, oxalic acid, trichloroacetic acid and trifluoroacetic acid, has
the very good stability.
Therefore, titanium is excellent in
petroleum refining and petrochemical industry structure material, can be used
to make all kinds of heat exchangers, reactor, pressure vessel and distillation
tower, etc.
3. Titanium metallurgy industry belongs to
the active metal, has a good suction performance, is an excellent degassing
agent in steel industry, it can combine separation of oxygen and nitrogen steel
during cooling.
Add a small amount of titanium in steel
(< 0.1%) can make the steel toughness and elastic.
The titanium and steel, aluminum and other
industry important additive in alloy.
Titanium has superconductivity, it is a
common form of superconducting materials.
In addition, titanium in acid solution containing metal ions has the very good
stability, so the titanium in the wet metallurgy industry, such as copper,
nickel, cobalt, manganese and other non-ferrous metal electrolytic production,
has the extremely widespread application.
Fertilizer industry
Urea fertilizer is important, in the
process of production of urea, ammonia, ammonium carbamate and their mixture,
under the condition of high temperature and high pressure, corrosion resistance
is very strong, using titanium instead of stainless steel equipment life
increase greatly, greatly reduce maintenance time.
So the main equipment are using titanium in
urea production.
Desalination and shipbuilding industry
Titanium seawater corrosion resistance is
better than all other metals, whether in a static or high-speed flow of
titanium in sea water has a special stability.
Therefore, titanium is an ideal material to
seawater desalination device.
Titanium application number in this field
will be bigger and bigger.
Titanium sea water and sea air corrosion resistance is very strong, and
strength, light weight, is the ideal structure of shipbuilding industry
material, has been widely used in all kinds of many parts of the ship,
deepwater submarine.
Electric power industry
Titanium in containing chloride, sulfide
and many other strong corrosion of hot water has good stability, and therefore
titanium has a lot of in the coal-fired power plant used as a cooling pipe heat
exchanger.
Thin-wall titanium pipe to replace copper
nickel alloy tube, not only greatly improve the service life, and greatly
reduces the maintenance time, the economic effect is significant.
Paper and textile industry
Titanium of chlorine dioxide, and chlorate,
and chlorite, such as bleach with special corrosion resistance.
Therefore, titanium in textile printing and
dyeing industry, papermaking industry bleaching has important applications in
the system.
Drift machine use, for example, made of
titanium, the effect is very good.
At the same time, has been used as a
spinneret and synthetic fiber industries.
Other aspects
Titanium can resist the corrosion of the
human body, and harmless to the human body.
Thus can be widely used in medical and pharmaceutical industry.
Breathe in titanium with good performance,
also in electronic vacuum and high vacuum technology, there are a wide range of
applications.
Titanium application in petroleum, chemical
and other departments
Use the department: petroleum chemical
industry
Purpose: reactor, pressure vessels, piping,
heat exchanger, separator distillation tower condensation, lining, etc.
Use the department: the chemical industry
Purpose: distillation column, reactor, pressure
vessels, heat exchangers, filters, measuring instruments, turbine blade, pump,
valve, pipe, chlor-alkali production electrode, lining and other acid synthesis
tower equipment lining.
Paper industry: blender, bleaching tower,
heating pan, reaction tower piping.
Textile industry: continuous bleaching
machine, distillation tower, reaction tank, condenser, heat exchange tube,
centrifuge, spinneret, valve, pump.
Metallurgy industry: getter, alloy
additive, superconducting alloys and electrolysis of high purity metals, such
as sodium, nickel and cobalt cathode plate and the plating bath, etc.
Desalination and power plants heat
exchanger, condenser, water heater, pipe, other contact with the equipment of
the water.
Ship industry: shells of vessels, deck,
valve, wing, speedboat, propeller shaft, the steam engine, deep submarine
pressure tank, the development of Marine equipment.
Other: titanium ultra high vacuum pump,
medical and orthopaedic apparatus and instruments, artificial joints,
pharmaceutical and food industry equipment.
