Performance and titanium alloys are widely used in industry

Titanium because of its high strength, heat resistance, corrosion resistance, widely applied in industry . Especially in aviation, aerospace , shipbuilding and other industries , mostly used in the manufacture of titanium alloy key components , its performance is good or bad usually determines the level of the product . Therefore , national research institutions to put a lot of manpower, material and financial resources to carry out its melting alloys and equipment , forming process research and development , writing papers , and many thousands of monographs . However, the study of titanium companies  process with little , limited studies have limited studied. Titanium because of its high melting point, chemical activity , thermal properties between the elements of the big difference , so the smelting process of melt composition and temperature control is very difficult, and the melt composition and temperature directly determine the quality of titanium casting companies . Therefore , to identify qualitative and quantitative variation of melt composition, temperature and process parameters , alloy itself between thermal parameters have important practical significance for guiding titanium melting , smelting practice for other alloys also have important reference value.

The role of titanium ingot segregation effects

Seen from the front , consumable arc melting , the solidification of titanium ingots from the bottom of the ingot in the order gradually to - wide solidification solidification process is in order. As a result, some of the titanium alloy ingot impurity elements to different parts of the ingot are regularly distributed , resulting in segregation effects. The principle of effective government is also purified metal smelting area . It makes titanium ingots alloying elements or impurities in small ingots showing the distribution area segregation.
    Segregation effect occurs with titanium ingot ( or metal sticks ) impurities ( or alloying elements ) equilibrium distribution constant K0 relevant ; segregation effects arising after the gradual solidification of the cash borrowed from the theory of a titanium ingots left to be addressed on that theory when the order reported titanium ingot ingot Titanium Casting Manufacturer solidification small impurity distribution diagram . The actual status of titanium ingots similar.
    However , the rapid melting process flexor directional solidification process , the impurity diffusion between the two phases in the shelter group can not reach equilibrium , so it's not a distribution constant K0, segregation of some small effect . When titanium melting, segregation should be a purifying effect of the role , as long as the use of light ingots , you can reduce the effects of impurities.
    Secondary smelting produce titanium casting factory consumable content of impurities TA2 pure milled raw material ingot Table relationship , which is the average of 100 titanium ingots . As can be seen from the table, iron , titanium ingot and the nitrogen concentration of the titanium sponge has not changed , the purification effect of sky ; silicon, carbon and oxygen increased slightly , and no purification effect, but in the smelting process is increased impurity contamination volume ; Lee hydrogen chloride purification obvious effect , do not hold the product in a reduced number of chlorine and level . It also shows that the main role of vacuum distillation . Both the total amount of impurities from the point of view , slightly lower than the titanium ingot of titanium sponge impurities, by lowering the melting sponge drink chlorine , and slightly increases the oxygen and other impurities. In short , a slight increase in the purity of titanium , but it remains in a substantially horizontal magnitude .

Of uniform standards and methods of evaluation of aerospace titanium castings retardant properties

Of uniform standards and methods of evaluation of titanium flame retardant properties. Properly evaluate flame retardant properties of titanium alloys is one of the key technologies of flame Titanium precision castings  titanium alloys, including combustion simulation methods and testing techniques. Currently, the evaluation method on the flame retardancy is no uniform standard, countries have adopted different methods of testing. So retardant performance evaluation method to develop a unified standard titanium will effectively promote the exchange of national retardant titanium. (2) improve the overall mechanical properties of Titanium precision castings retardant. Compared with flame titanium, titanium alloy retardant poor mechanical properties, the working temperature is lower. On how to further improve the mechanical properties of the(3) reduce the flame titanium costs. Resistant Titanium alloy sheets contains a lot of noble metal elements V, resulting in higher costs, limiting its applications. Domestic scholars have adopted partial substitution of lower-priced Mo V for a certain amount of research to try. alloy of the need for a deeper study.

Modern superplastic deformation theory that grain boundary sliding is the main way of superplastic deformation

Modern superplastic deformation theory that grain boundary sliding is the main way of superplastic deformation, diffusion and dislocation motion inside the grain and the grain boundary is the main coordinating mechanism of grain boundary sliding. Superplastic forming of titanium alloy pump  B-phase diffusion creep or dislocation creep dominated: A phase to the grain boundary sliding-based, coordinated jointly by diffusion and bit dislocation motion; A and B are two phases flow to A and B phase boundary migration to complete. Hydrogen in the titanium alloy superplastic forming :( mainly plays a role in the following) was added to increase the diffusivity of hydrogen in the alloy elements, resulting in enhanced B-phase diffusion slip A creep and titanium casting process intergranular phase. (2) the diffusion of hydrogen activated dislocation pinning promote the climb and slide dislocations, improved sliding capacity of B grains, the coordinating role of dislocations in favor of A / A grain boundary sliding requested. (3) hydrogen-induced weak bond effect, reducing the diffusion activation energy, enhanced atomic diffusion capacity, improve the superplastic flow capacity. (4) the Titanium alloy valve addition of hydrogen significantly reduces B \ A + B transition temperature, increase the volume fraction of the B phase, a direct result of the increase and decrease the flow stress of the plastic, so that the titanium alloy can be deformed at a lower temperature and higher deformation rates were superplastic forming.

As the representative of the research and production facilities

As the representative of the United States Bureau of Mines research and production facilities for titanium investment casting technology in-depth research, development of the melting and casting process is suitable for titanium , which is a low-cost processing and forming of Titanium alloy valve opened up a new path. As a method of casting forming complex shapes can be directly manufactured parts eliminates a lot of the subsequent processing steps , thus increasing material utilization and reduce titanium alloy casting manufacturing costs.Titanium alloy valve in the aerospace engine usage and comparison of forgings , can be seen, Titanium alloy valve with clear growth trend will gradually reach the amount of titanium forgings for each equivalent level. In particular, the application of cast titanium valve in civilian areas , for example, if the casting can be mass produced with great golf club head , which promote the use and development of cast itanium alloy valve. In all system shell process parameters on shell quality and ultimately a greater impact on the quality of castings are: batter ingredients, namely powder -liquid ratio , dewaxing and roasting process parameters, this research labs now there are devices on the above parameters in-depth study and optimize selection.

With the memory titanium check valve deformation function at a particular temperature

With the memory alloy deformation function at a particular temperature , the temperature can produce a variety of devices, the temperature control circuit can be produced , thermostatic door , temperature of the pipe connection . People have made ​​use of Titanium alloy valve automatic memory alloy fire hydrant - fire temperature, memory alloy deformation, so that the titanium check valve opens, water spray fire. Making a connection to connect the mechanical parts , pipes , air refueling aircraft interface is the use of a shape memory alloy - two oil pipes tacking , the use of electric heating temperature change , the interface memory alloy deformation, so that the interface tight dripping titanium alloy does not leak . Making the area of ​​titanium check valve several hundred square meters of space station antenna from Fair - first made large parabolic antennas or planar , folded into a ball on the ground, with the spacecraft to the space , the temperature changes , since the development of a large area and the titanium check valve shape. Memory alloys have been to dozens of current development in the aerospace, military, industrial, agricultural , medical and other fields have a purpose , and the development titanium alloy pump trend is very impressive, it is grand plans for the titanium check valve benefit of mankind.Application memory alloy application memory alloy is widely used. For example, the fastening pin machinery, fittings, fire alarm on electronic equipment , connectors , integrated circuits, soldering.

Aerospace titanium castings to the successful development of the machine

Why not see rivets it. In fact, this and related processing technology , due to the advances in technology, a large piece of aerospace titanium castings using whole body casting , extrusion and then press through a dedicated , increased density , ( the two years prior aerospace investment castings to the successful development of the machine , once media have reported that this is the aircraft fuselage presses developed specifically for ) , and finally the use of CNC machine tools hollowed out , high-precision machine tools , the entire aerospace titanium castings ( diameter may up to 3 meters ) hollowed out into the shape of the aircraft fuselage , so the aircraft do not need to cover the skin, the skin of the fuselage frame and a aerospace titanium castings are then processed , so do not see rivets.Such a process titanium valve can greatly increase the strength of the aircraft , but also improve the accuracy of processing a lot , this is a revolutionary advancement process of the aircraft fuselage . Aircraft ever built up step by step , first build a aerospace titanium castings , between the frame and bolted punch , then use a rivet on the skin . These processes entirely by hand , the precision is difficult to control , and if the bolt which does not clench or aging can aerospace titanium castings lead to serious disintegration of the entire Titanium investment castings aircraft , light can also cause skin cracking, so planes have to be done to test the static -destructive testing whether the aircraft design strength . And because of the introduction of new processing technology J20 , the whole body is one, to achieve the best strength to do after high air maneuvers lead to the disintegration of the body will no longer appear .

Titanium check valve is widely used in industrial

Titanium check valve because of its high strength, heat resistance, corrosion resistance, widely applied in industry . Especially in aviation, aerospace , shipbuilding and other industries , titanium valve mostly used in the manufacture of titanium check valve key components , its performance is good or bad usually determines the level of the product . Therefore , national research institutions to put a lot of manpower, material and financial resources to carry out its melting titanium check valve and equipment , forming process research and development , writing papers , and many thousands of monographs . However, the study of titanium melting process with little , limited studies have limited studied. Titanium because of its high melting Titanium alloy valve point, chemical activity , thermal properties between the elements of the big difference , so the smelting process of melt composition and temperature control is very difficult, and the melt composition and temperature directly determine the quality of titanium alloy pump . Therefore , to identify qualitative and quantitative variation of melt composition, temperature and process parameters , titanium check valve itself between thermal parameters have important practical significance for guiding titanium melting , smelting practice for other titanium check valve also have important reference value.

Aerospace titanium castings Application Progress

Retardant performance evaluation method to develop a unified standard titanium will effectively promote the exchange of national retardant titanium. Improve the overall mechanical properties of aerospace titanium castings retardant. Compared with flame titanium precision casting  titanium alloy retardant poor mechanical properties, the working temperature is lower. On how to further improve the mechanical properties of the alloy of the need for a deeper study. Reduce the flame titanium costs. Resistant titanium alloy contains a lot of noble metal elements V, resulting in higher costs, limiting its applications. Domestic scholars have adopted partial substitution of lower-priced Mo V for a certain amount of research to try.Composition and performance characteristics of high temperature titanium alloy. Problems flame aerospace titanium castings research and development direction present, except the United States and Russia, some typical titanium retardant has been applied, the study of other countries on the flame is still in the research phase aerospace titanium castings  titanium alloy type flame retardant less costly and flame retardant properties of non-uniform evaluation methods have hindered the development of fire-retardant aerospace titanium castings  Through research, the authors believe that the development direction of the flame Aerospace investment casting mainly: Development of uniform standards and methods of evaluation of aerospace titanium castings flame retardant properties. Properly evaluate flame retardant properties of titanium alloys is one of the key technologies of flame titanium, aerospace titanium castings  including combustion simulation methods and testing techniques. Currently, the evaluation method on the flame retardancy is no uniform standard, countries have adopted different methods of testing.

Titanium alloy valve is often widely

Titanium alloy valve in the civilian industry, because of its material has antioxidant and reducing Titanium sheet medium excellent corrosion properties, especially anti-stable above 100 ℃ reducing hydrochloric acid and sulfuric acid, phosphoric acid, acetic acid, can not be compared with other materials, excellent resistance to corrosion resistance, Shanghai VINCI valve valve titanium alloy valve and titanium alloy valve are wanodizing and other scientific methods to ensure VINCI too valves in reducing medium corrosion resistance and surface hardness of quality assurance. Nickel and nickel alloy valves valve condition medium corrosion resistance targeted, high application cost, are widely used in chemical, petrochemical, metallurgical, nuclear, ocean development, power plants and other industrial fields pipelines desulfurization control aerospace investment castings  to solve the general stainless steel and other metals, non-metallic materials corrosion problems can not be resolved to ensure the pipeline control valves in extremely harsh corrosive medium and long-term safe, reliable and stable operation. Shanghai VINCI valve production of nickel and nickel alloy valves are: pure nickel titanium valve, nickel-chromium alloy valves, nickel-copper alloy valves, nickel-molybdenum alloy valves, nickel-chromium-molybdenum alloy valves.idely used in the harsh conditions of corrosion engineering.

Advantages and disadvantages of the titanium alloy valve and its application

Classification by purpose and role of the cut-off valves are mainly used to cut off or turn on media streaming. Include gate valves, globe valves, diaphragm valves, ball valves, plug valves, butterfly titanium valve  piston valves, ball plug valves, needle valves, and other instruments. Principal titanium alloy valve for regulating the flow of media pressure. Including control valve, throttle, valve and so on. Check Titanium casting type used to prevent the media back. Various structures, including a check valve. Titanium alloy valve for the separation, distribution or mixed media. Including the distribution of various structures such as valves and traps. Class for safety valve overpressure protection when media. Include various types of safety valves.Anodizing and other scientific methods to ensure titanium alloy valve too Titanium alloy valves in reducing medium titanium alloy valve corrosion resistance and surface hardness of quality assurance. Nickel and nickel alloy valves valve condition medium corrosion resistance targeted, high application cost, are widely used in chemical, petrochemical, metallurgical, nuclear, ocean development, power plants and other industrial fields pipelines desulfurization control system.

Titanium alloy valve has a unique physical and chemical corrosion resistance

Titanium and titanium alloy valves valve because of its unique physical and chemical corrosion resistance, in the nuclear titanium check valve industry, aerospace, aviation and civil applications in areas such as chemical industry plays an irreplaceable and excellent value for money is widely used in demanding a special process line titanium pump control to ensure long pipeline safety technology, stable and reliable operation. Titanium in the civilian industry, because of its material has antioxidant and reducing media medium excellent corrosion properties, especially anti-stable above 100 ℃ reducing hydrochloric acid and sulfuric acid, phosphoric acid, acetic acid, can Titanium sheet not be compared with other materials, excellent resistance to corrosion resistance, titanium alloy valves and alloy valves are widely used in the harsh conditions of corrosion engineering.

Titanium alloy valves mainly using titanium metal material

Titanium valves and titanium alloy valve is the use of titanium metal materials in highly corrosive environments oxide film has good stability and self-passivation capability, this feature titanium valve to resist corrosion and strong variety of harsh conditions. Titanium valves can resist corrosion media environment, the key lies in the surface of the "blunt oxide film" chemical stability in corrosive media. Shanghai VINCI valve on the surface of titanium ion modification, anodizing and other scientific methods to ensure VINCI too valves in reducing medium corrosion resistance and surface hardness of quality assurance. Nickel and nickel titanium alloy valve Titanium alloy valve condition medium corrosion resistance targeted, high application cost, are widely used in chemical, petrochemical, metallurgical, nuclear, ocean development, power plants and other industrial fields pipelines desulfurization control system, to solve the general stainless steel and other metals, non-metallic materials corrosion problems can not be resolved titanium pumps to ensure the pipeline control titanium alloy valve in extremely harsh corrosive medium and long-term safe, reliable and stable operation. Shanghai VINCI valve production of nickel and nickel titanium alloy valve are: pure nickel valves, nickel-chromium alloy valves, nickel-copper alloy valves, nickel-molybdenum alloy valves, nickel-chromium-molybdenum alloy valves.

Do not be easily equipped with titanium alloy products

We are talking here not easily equipped with titanium products, titanium does not mean that the product can not Titanium alloy sheets be equipped with , but a lot of people equipped with the jewelry made ​​of titanium alloy can not be taken down , because titanium is too hard , the general cut cutting tools are no way to get titanium .     If you must wear a titanium valve jewelry sizes must be clear , and whether the case does not, who do not take down . So we are here to say do not easily equipped with titanium alloy products .

Research and application of aerospace titanium castings

Development needs of aero engine high performance led development leads the high temperature titanium alloy, titanium alloy using the temperature gradually increased, from twentieth Century 50 to alloy as the representative, through to the alloy as the representative of the. At present, represents the international advanced high-temperature Titanium alloy sheet has USA, Britain, Russia and China. Composition and performance features of high temperature titanium alloy. The existence of titanium alloy problems and development direction at aerospace titanium castings present, except for some typical titanium alloy USA and Russia have been used in practice, research on titanium alloy with other countries is still in the research stage, Aerospace titanium castings type less, not unified and the flame retardant performance evaluation aerospace titanium castings method of high cost has hindered the development of titanium alloy. Through research, the author thinks that the development direction of titanium alloy is mainly: (1) standard evaluation of fire retardant properties of titanium alloy and method. Flame retardant performance evaluation of titanium alloy right is one of the key techniques of flame retardant titanium alloys, including the simulation methods and detection technology of combustion of titanium alloy. At present, the flame retardant performance evaluation method has no uniform standards, countries have adopted different methods to test. Flame retardant performance evaluation method of titanium alloy and therefore the formulation of a unified standard will effectively promote the national Titanium alloy valves exchange. (2) increase the mechanical aerospace titanium castings properties of titanium alloy. Compared with the titanium alloy, titanium alloy is poor mechanical properties, low working temperature. Research on how to improve the mechanical properties of this alloy for deeper. (3) reduce the cost of titanium alloy. Titanium alloy containing large amount of noble metal elements of V, resulting in higher costs, limiting its application. The domestic scholars have studied to replace V with Mo part of low price.

Progress in research and application of aerospace titanium castings

Development needs of aero engine high performance led development leads the high temperature aerospace titanium castings, titanium alloy using the temperature gradually increased,from twentieth Century 50 to alloy as the representative, through to the alloy as the representative of the. At present, represents the international advanced high-temperature titanium alloy has USA, Britain, Russia and Chinese. Composition andperformance features of high temperature titanium alloy. Through research, the author thinks that the development direction of titanium alloy is mainly: (1) standardevaluation of fire retardant properties of aerospace titanium castings and method. Flame retardantperformance evaluation of titanium alloy right is one of the key techniques of flame retardant Titanium alloy sheet, including the simulation methods and detection technology of combustion ofaerospace titanium castings. At present, the flame retardant performanceevaluation method has no uniform standards, countries have adopted different methods to test. At present, the flame retardant performance evaluation method has no uniform standards, countries have adopted different methods to test. Flame retardant performance evaluation method of titanium alloy and therefore the formulation of a unified standard will effectively promote the national titanium alloyexchange. (2) increase the mechanical properties of titanium alloy plates. Compared with thetitanium alloy, titanium alloy is poor mechanical properties, low working temperature.Research on how to improve the mechanical properties of this alloy for deeper. (3)reduce the cost of titanium alloy. Titanium alloy containing large amount of noble metal elements of V, resulting in higher costs, limiting its application. The domesticscholars have studied to replace V with Mo part of low price.

The role of the titanium check valve, the installation location

The effect of the Titanium alloy valves in the pipeline is to prevent the backflow of fluid. Common use of more than a check valve in plumbing, exports more than installing the pump check valve, so that when the pump stops, the water pipeline will not turn the clock back; pump suction pipe head also has a check valve, so that it Sheung Shui can be maintained when the next start. Common spring-type check valve, lift and swing. Also used in the hydraulic check valve, the hydraulic system can maintain pressure. Titanium alloy sheet is usually installed in the export position of the pump. Titanium check valve, also known as check valves, determined according to the specific needs of the pipeline installation direction. If the installation location of the pipe is vertical, you can choose from spin type, pipeline. If the pipe is horizontal mounting position, you can choose the lift. Lift check valves open and close the fastest. Spin from the check valve of least resistance. Pipeline check valves are generally mounted on the clip-on approach in the majority, are not suitable for installation distance off place. titanium alloy sheets  widely used in various pump outlet pipe, extraction pipes, drains, and other media are not allowed back in the pipeline. Before the use of the titanium check valve is a pressure differential valve which automatically open and close the valve, it is the role of the medium flow in one direction only, and to prevent the reverse flow. According to their different structures, the check valve can be divided into lift (jump centripetal) and swing (roll plate) two. Lift check valve must be installed in horizontal pipelines, and make strict vertical axis of the valve in a horizontal plane, in order to ensure a flexible and reliable operation of the valve lift of. Swing check valve as long as the rotation pivot horizontally, can be installed in any horizontal, vertical or inclined pipeline.

Planning and application of titanium alloy valve

Industrial pure titanium titanium refers to non titanium alloys with different Fe, C, N, O and other impurities content. Industrial pure titanium can not be heat treatedstrengthening, molding excellent performance, easy welding and brazing. The practical application of industrial pure titanium widely, research found that a typicaldeformation of industrial pure titanium; typical casting pure titanium. Titanium alloywith titanium, alloy by adding Al, Sn, Cr, Mo and Mn elements. titanium alloy usually inannealing state phase classification, divided into alpha, beta and alpha + beta type titanium alloy. The main components of titanium alloy for alloy Ti with Al, Sn, Cr, alpha stable elements, the return of state organization for a solid solution. Titanium alloy can not be strengthened by heat treatment, its strength than the beta and alpha + betatype titanium alloy is low, but keep the high temperature strength and good in 500 ~ 600 ℃ when in use. The welding properties, casting properties, pressure processingperformance, stability and no cold brittle good with titanium alloy, disadvantage is thelow technology of plastic and the hydrogen embrittlement sensitivity. Titanium alloy sheet is widely used in practice, the typical alpha type deformation of titanium alloy. The maincomponents of beta type titanium alloy for alloy Ti with Cr, Mo, V and other elements,this kind of alloy after quenching process are beta crystallology organization, strength and impact toughness of high pressure processing performance, and good welding performance. But the performance of titanium alloy microstructure instability, melting process complex, less application. Stable beta titanium alloy. The microstructure ofalpha + beta type titanium alloy for α + β organization, is in the steady state with 5% ~ 25% beta and beta zone from rapid cooling forming alpha + beta titanium alloy phase alpha martensite, which can be strengthened by heat treatment quenching and aging treatmen.

Application and selection of titanium alloy valve

Titanium and titanium alloy, light weight, high strength, high yield ratio, non magnetic, biologically inert, and has excellent corrosion resistance. In seawater environment, titanium and Titanium castings almost no corrosion, corrosion resistance is excellent in most chemical medium. At present, with the progress of science and technology and all walks of life to the application of new materials to increase the strength, the necessary products of titanium valve as the medium of various special environment and special fluid delivery system has been used. However, the fluid medium and environmental conditions in different areas and industries are not the same, performance requirements of the material used on different titanium valve. At the same time, because of the different components ofTitanium alloy valveperformance requirements are different, different process, and to reduce the cost of parts needed to use alternative materials and other factors, the material has become one of the technical problems of first consideration must be titanium valve design and manufacturing, and suffer the widespread concern and attention. Industrial pure titanium refers to non titanium alloys with different Fe, C, N, O and other impurities content. Industrial pure titanium can not be heat treated strengthening, molding excellent performance, easy welding and brazing. Titanium alloy with titanium, alloy by adding Al, Sn, Cr, Mo and Mn elements. Titanium alloy usually in annealing state phase classification, divided into alpha, beta and alpha + beta type titanium alloy. The main components of titanium alloy for alloy Ti with Al, Sn, Cr, alpha stable elements, the return of state organization for a solid solution. Titanium alloy can not be strengthened by heat treatment, its strength than the beta and alpha + beta type titanium alloy is low, but keep the high temperature strength and good in 500 ~ 600 ℃ when in use. The welding properties, casting properties, pressure processing performance, stability and no cold brittle good with titanium alloy, disadvantage is the low technology of plastic and the hydrogen embrittlement sensitivity. Titanium alloy is widely used in practice. Casting titanium metal must have fluidity and good processibility, mechanical properties of domestic and foreign typical casting titanium and titanium alloy is shown in table 1. Wrought titanium metal must have good plasticity, mechanical properties of domestic and foreign typical forging of titanium and titanium alloy is shown in table 2.

Great effect on the mechanical properties of O, C and N impurities often exist in titanium to titanium, which can enhance the strength of titanium and reduce its plasticity, the larger N, effect of C is low, the effect of intermediate O. In addition, B, Be and Al elements to improve the impact strength of the larger Ti, Cr, Mo, Mn, Fe, V and Sn on the strength of titanium has little effect. Al is often used as a stable elements of alpha, alpha + beta type titanium alloy and alloy elements, a grain of alloy, improve the recrystallization temperature and phase transition temperature, and a significant strengthening effect, and can reduce the alloy density, increase the elastic modulus. Mo is often used as the stable elements, beta beta alpha + beta type titanium alloy and alloy elements, is not significantly reduces the material plastic case, strengthen the role of the larger, can also improve the fracture toughness, the corrosion resistance of materials, reduce the stress corrosion sensitivity.

Titanium and titanium alloy of high strength, low density and other properties make it widely used in aerospace engineering. Such as various pipeline aircraft on the extensive use of titanium alloy valve, Titanium castingstype relates to the cut-off valve, check valve, needle valve, plug valve, ball valve and butterfly valve. Titanium valve as the key system components conveying fluid control titanium alloy pipe, widely used in chemical engineering. Valve valve with fasteners as important component, is also very important in valve design, manufacture. Implemented in a large PTA project mass production and application. Titanium valve is widely used in chemical industry, but must pay attention to its not suitable for any chemical medium. The hydrofluoric acid, hydrochloric acid, sulfuric acid and phosphoric acid and oxalic acid, formic acid, hot concentrated three chloroacetic acid, three trifluoroacetic acid and strong corrosive aluminum chloride, have severe corrosion effect of titanium and titanium alloy, titanium valve is not suitable for this kind of chemical medium, should pay attention to in use.‍

titanium check valve Materials commonly used glasses

Most commonly used glasses plastic and metal materials can be divided into two categories

Titanium material found

Development of titanium materials: sunrui titanium tube a German chemist in 1794 ( two hundred and seven years ago ) discovered this new metal element and named it titanium titanium. Named by sources from the ancient myth of the West Prince Titan ( Titan ) , because he believes that super-strength titanium and ultra- refractory degree , working with the great Titan with shine .

Although titanium material in the Second ○ was discovered seven years ago , but due to refining process was not easy ( titanium is very easy to combine with oxygen ) , scientists have been unable to be refined into useful substances metals. Until 1938 , the company developed a new way to extract , plus magnesium reduction method, the red and gold reserves in the ground ore , after chlorination, plus magnesium , restore it sunrui titanium alloy pump and become a sponge titanium, to nineteen in 2043 , the company began producing a large number of titanium metal products.

Development of titanium frames

Titanium is a metallic chemical element , because the refining process is not easy, and less expensive titanium material production , it is only used in the early titanium aerospace science , marine science and other high-tech science and energy development . And daily necessities are to begin in 1965 applied to the titanium material .

The first titanium frame is in1980 someone invented the " rivet -like titanium frames " titanium welding is a very difficult material, there is no better way to do early connection handling , use rivets type of way to put it nailed together. While in 1981 , the plant began outside coated with a layer of nickel titanium material to facilitate welding. May compete with the growing manufacturing methods in the new market , the company in 1982 launched the sunrui titanium alloy sheets first day of the first pay full titanium metal frames around the world ; 1984 also has factories launched nickel titanium frames, there is a big price difference.