titanium alloy application QYX titanium

Titanium alloy application QYX titanium

Titanium and its alloys have been widely used in more and more fields because of their superior properties:

1 . application in hydrometallurgy industry

As a new corrosion resistant material, titanium has been used for more than 20 years in the metallurgical industry,especially in the hydrometallurgy industry of China. However,it has achieved great success and achieved remarkable social and economic benefits.

From the beginning of 70s, Yunnan smelter, Shanghai smelter,Huludao zinc plant and other non-ferrous metallurgical industry pioneered the use of titanium material in electrolytic copper, electrolytic nickel and zinc smelting, to solve the serious corrosion problem plagued production and development of titanium and Titanium Equipment in the application of the success of the enterprise, but also promote the use of China' s

Titanium Industrial and civil promotion greatly.

Since 80s, many domestic hydrometallurgy enterprises have begun to select Titanium Materials in technological transformation. Jinchuan Non-ferrous Metals Company, Shenyang smelter, Daye Tongling Nonferrous Metals Co, Daye Non-Ferrous Metals Co and other enterprises in the past ten years with the

titanium content of up to hundreds of tons, the use of these new technologies, new equipment, China' s non-ferrous hydrometallurgy industry equipment is more close to the world

advanced level.

Titanium is the main advantage of the application of carbon and copper in the industry:

(1) the oxide film on the titanium surface protects the titanium from electrolyte corrosion and does not pollute the electrolyte.

(2) it is very easy to peel off and reduce the intensity of labor.

(3) the yield of finished products has increased by more than 30%.

(4) the crystalline structure of copper alloy is compact and its surface is smooth.

(5) it is not easy to break the circuit.

(6) service life over 30 years.

2 . application in aviation and aerospace

The specific strength (strength and weight ratio) of titanium and its alloy is very high in the metal structural material.Its strength is equal to that of steel, but its weight is only 57% of that of steel. In addition, titanium and its alloy have good heat resistance, and can maintain good strength and stability in the atmosphere at 500 degrees centigrade, and the working temperature can be even higher in a short time. The aluminum at 150 degrees, stainless steel at 310 degrees lose the original mechanical properties. When the aircraft, missile, rocket high-speed flight, the engine and surface temperature is very high, aluminum alloy is not competent, then the use of titanium alloy is very appropriate. It is because of titanium and its alloys have excellent properties of high strength, light weight, strong heat resistance, in aircraft manufacturing and use it to replace other metals, can not only extend the service life of the aircraft, but also can reduce the weight, thus greatly improving the flight performance.

Therefore, titanium is one of the most promising structural materials in the aerospace industry and the aerospace industry. Titanium and its alloys are used mainly in the aviation industry for the manufacture of aircraft engines and airframe. Generally speaking, Maher number less than 2 of the aircraft, the engine

uses a part of titanium and its alloy, the body is generally aluminum alloy. A plane with a Maher number equal to 2. Its engine increases with titanium, and its body parts require titanium. For aircraft with Maher number greater than 3. 5, the engine inlet temperature is already high, and titanium alloy can not be used, but the titanium content of the fuselage is increased significantly.

Titanium and its alloy also has good low-temperature performance, even at -250 DEG C at ultra low temperature, the impact strength is still high, under high pressure shock resistant. As a result, titanium and its alloys are used not only in rocket, missile and spacecraft for the manufacture of engine housings and structural parts, but also for the manufacture of high pressure vessels, such as high-pressure cylinders and cryogenic liquid fuel tanks.

3 . application in petrochemical industry

Titanium is used in the petrochemical industry to make chemical equipment. The selection of chemical equipment is very important, a lot of pressure vessels, tanks, towers, heat exchangers, piping and fasteners and connectors etc. in working conditions, not only to bear a certain load, strong corrosion

and to be subjected to many medium, very harsh working conditions. In this case, many equipment selection, such as only on the basis of commonly used stainless steel on the adjustment, has been unable to adapt. The mechanical properties of titanium and titanium alloys are similar to those of stainless steel,

The corrosion resistance is far superior. Therefore, the important equipment in chemical industry, titanium gradually in various forms such as lining of titanium, titanium steel composite and the application of titanium.

Titanium in China' s petrochemical industry in the application from the beginning of the 80s, ethylene and aromatics extraction unit in Shanghai Jinshan Petrochemical factory and aniline hydrochloride production unit of Lanzhou refinery, the application of titanium solution to the corrosion problem has long plagued production. Subsequently, Shanghai Gaoqiao Petrochemical baling Petrochemical Industries Co have invested a lot of money, in the application of titanium equipment in petrochemical industry, and obtain good economic benefits and social benefits.

4 . application in chemical industry

In chemical production, using titanium instead of stainless steel, nickel alloy and other rare metals as corrosion resistant materials, increase the yield, improve product quality, prolong the service life of equipment, are of great significance to reduce consumption, reduce energy consumption, reduce costs, prevent pollution, improve working conditions and raise productivity.

In recent years, the range of titanium used in chemical industry has been expanding, and the amount of titanium has been increasing year by year. Titanium has become one of the main anti-corrosion materials in chemical equipment. Titanium, as an excellent corrosion resistant structural material for chemical engineering, has established its status and has attracted more and more attention of engineers and technicians.

(1) chlor alkali industry

Chlor alkali industry is an important basic raw material industry, and its production and development have a great impact on the national economy. This is because the corrosion resistance of titanium to chloride is superior to that of stainless steel and other non-ferrous metals. Titanium is widely used in the chlor alkali industry to make metal anode electrolytic bath, ion-exchange membrane electrolyzer, wet chlorine cooler, refined brine preheater, dechlorination tower, chlorine cooling tower and so on. The main components of these devices in the past using non-metallic materials (such as graphite, PVC etc. ) , because the process performance of mechanical properties, the thermal stability of metallic materials and processing is not ideal, resulting in heavy equipment, high energy consumption, short service life, and affect the quality of products and environmental pollution.

Therefore, since 70s, the metal anode electrolyzer and ion membrane electrolyzer have been used instead of graphite bath,and the wet chlorine cooler made of titanium instead of graphite cooler has achieved good results.

For example: the application of titanium wet chlorine coolers.Salt electrolysis production of caustic soda to produce a large number of high temperature wet chlorine, the temperature is generally at 75~95 DEG C, need to be cooled and dried before use.

The production of chlorine by salt electrolysis in China has been influenced by the unreasonable cooling process or the corrosion of cooling equipment, and also seriously polluted the environment. The titanium cooler with high temperature and wet chlorine corrosion has been put into production and changed the

production of chlorine in chlor alkali industry. Titanium in high temperature wet chlorine environment is very resistant to corrosion, chlorine titanium at room temperature in the corrosion rate of 0. 000565mm/a at 80 DEG C; the chlorine water,the corrosion rate of titanium is 0. 00431mm/a; containing 95% wet chlorine, the corrosion rate of titanium at room temperature for 0. 00096mm/a. Many chlor alkali plants have used titanium wetted chlorine coolers, which have been used for nearly 20 years and are still intact.

(2) soda industry;

Soda ash is one of the most basic chemical raw materials. In the process of producing sodium carbonate, gas medium is NH3 and CO2, liquid medium for the solution of NaCl, NH4Cl, NH4HCO3 and Cl- with high concentration, the use of steel and cast iron material for carbonation carbonation tower tubular cooler,

cooler, heat, liquid crystal outer cooler main equipment are severe corrosion leakage, the use of life is not more than three years. the application effect of carbonation tower cooling pipe with a diameter of 63 mm x 2mm, Titanium Plate, Titanium Heat Exchanger external cooler, titanium pump, CO2 turbo compressor rotor, Ti-6Al-4V alloy impeller etc. are very good, this is the whole industry with titanium the technological transformation and new three with an annual output of 600 thousand tons of soda ash plant plays a role model.

For example: a soda plant, distillation tower top ammonia condenser, the use of pure Titanium Pipe instead of cast iron pipe. Ammonia condenser is in the process of producing sodium carbonate, the ammonia distillation tower distilled condensation equipment, which is composed of two cast iron cooling box, each box diameter 2. 5m, high 1. 2m, the original is Phi 63 * 6 * 2986mm cast iron tubular 214, two boxes of 428 root. Both inside and outside the pipe are treated with thermosetting phenol formaldehyde varnish, and the tubes are NH3, CO2 and H2O. The temperature is about 95 DEG C. The NH4Cl mother liquid in the pipe is exchanged with the medium outside the pipe. This condition causes the corrosion of the cast iron

problem of production and development of serious problems of enterprises, the quality of drugs is greatly improved.

In recent years, many domestic pharmaceutical enterprises have made great use of titanium and titanium equipment in technological transformation and VC, VB and other products, which has laid the special position of titanium in the pharmaceutical industry.

Medical equipment, surgical instruments and in recent years the rapid development of the field, because the titanium is used as a surgical instrument has special superiority, thus won surgery, ophthalmology, cardiothoracic surgeon' s welcome, is the direction of development of surgical instruments.

Another remarkable feature of titanium is its excellent biocompatibility and is therefore chosen as the ideal implant material for human body. Over the past more than 10 years, countries in the world and many of our research department, School of medicine, the hospital also made a lot of basic research and clinical research, from the depth and breadth of titanium implant materials for confirmation of the ideal, these

years with titanium as the artificial femoral head, artificial wrist, knee joint, artificial dental implant, skull repair, pacemakers and other cases of thousands of records. From these years of research, tracking, comparison and reporting, you can think that titanium is the ideal material for human implants.