Progress editor

Progress editor
All countries in the development of new low-cost and high-performance Titanium heat exchanger, titanium alloy into the civilian efforts to make positive industry has huge market potential. New progress of titanium alloy is mainly reflected in the high temperature titanium alloy.
Successfully developed the world's first high-temperature titanium alloy is Ti-6Al-4V, using a temperature of 300-350 ℃. Then have developed a use temperature of 400 ℃ of IMI550, BT3-1 and other alloys, as well as the use of a temperature of 450 ~ 500 ℃ of IMI679, IMI685, Ti-6246, Ti-6242 alloy. Has been successfully applied in military and civil aircraft engines in the new high-temperature Titanium Sheet Metal alloys have British IMI829, IMI834 alloys; United States of Ti-1100 alloy; Russia BT18Y, BT36 alloy. Table 7 for the highest temperature part of the country's new high-temperature titanium alloy.
In recent years, the use of foreign fast solidification / powder metallurgy technology, fiber or particle-reinforced composites developed high temperature titanium alloy as the development direction, so that the use of temperature titanium alloy can be increased to more than 650 ℃ [1,27,29,31 ]. American McDonnell Douglas by rapid solidification / powder metallurgy technology has successfully developed a high-purity, high-density alloy, its strength at 760 ℃ ambient temperature corresponds to the intensity of use of titanium.

The main purpose of titanium alloys

The main purpose of titanium alloys
Titanium is an important structural metal in the 1950s developed, Titanium Sheet Metal because of its high strength, corrosion resistance, and high heat resistance and are widely used in various fields. Many countries recognize the importance of titanium alloy materials, have their research and development, and has been applied. 1950s and 1960s, mainly in the developing high temperature titanium and titanium alloy airframe aviation engine, the 1970s developed a number of corrosion resistant alloys, since the 1980s, corrosion resistant and high-strength titanium alloy has been further development of. Titanium is mainly used for the production of aircraft engine compressor components, followed by structure rockets, missiles and high-speed aircraft.

Carburizing surface treatment of titanium wire

The formation of stable carbon titanium wire with a high hardness carbide. Growth carbonized layer between titanium and carbon diffusion rate of titanium carbide layer is determined.
The solubility of carbon in titanium is small, at 850X: when a total of 0.3% at 600C and at approximately 0.1% B drops due to the small solubility of carbon in titanium, it is basically only by a layer of titanium carbide and the lower fork domain deposited layer to achieve the purpose of surface hardening. Removal of the oxygen must be carried out under the conditions of carburizing, the hardness of the surface layer as applied to steel used in carburizing carbon monoxide or oxygen-containing powder against the surface of the carbon monoxide formed is 2700MPa and 8500MPa, and the head. It is easy to peel off.
Compared with this, the conditions in the decarburization deoxidation or at the charcoal may form a thin layer of titanium carbide carburizing. This layer has a hardness of 32OUOMPa, conforming to the hardness of the titanium carbide. Carburized layer is substantially greater than the depth of the nitrided layer under the same conditions when the nitriding depth with nitrogen. In the oxygen-rich conditions must take into account the influence of oxygen absorption hardening depth. Only under conditions of very thin thickness, in a vacuum or an argon - methane atmosphere, it may penetrate the toner to form a sufficient adhesive strength as compared with this, using a gas carburizing agent may form hard and particularly good adhesion titanium carbide hardened layer. While the 950T: and 10201: temperature between the conditions for the formation of hardened exhibition in 50fim between and. With increasing thickness of the titanium carbide layer becomes more brittle and tend to peel off t To avoid decomposition leaving Rui alkoxy carbon inclusions invasion titanium carbide layer, should be approximately 2% of the volume fraction of the predetermined alkoxy Rui dose of additive gas carburizing in an inert gas. When using propane additives and the use of methane carburizing when he formed the lower surface hardness. When the adhesive force reaches Wu Mao OkPa conditions when using propane gas carburizing, although the measured thickness of the hardened layer is very thin, but it has the best wear resistance. Absorption of hydrogen in the gas type conditions using carburizing agent, but yet had to remove it when the vacuum annealing.

Note the use of titanium wire

Note the use of titanium wire
1, construction workers and welders should wear clean white fine gauze gloves (non-wearing cotton gloves).
2, the weld area treated and non-contact touch iron items.
3, welding work as much as possible in the room, the ambient wind speed should ≤0.5m / s, to avoid influence by drafts.
4, should be as short arc welding using welding, using a small welding heat input, the angle between the nozzle and the weldment maintain 70 to 80 degrees.
5, when the takeover tack welding, butt gap is generally about 0.5mm.
6, each weld seam should be possible once completed, must be connected to the welding seam, before welding the interface should be clean, welding meat lap length of 10 ~ 15mm.
7, welding, torch should not swing around, the end can not be removed from the wire melting gas reserve.
8, arc welding should advance aspirated, not lifted immediately when the torch arc, gas should be delayed until the temperature drops below 250 ℃.
9, gas mask and dragged away from the torch should be the shortest better, with the gap between the wall and strive to minimize contact. When the tube butt welding, forming side welding in order to achieve the requirements of the welding carried out twice: once for the back cover welding (weld when you can not back fill material) and the other for forming welding. When the multi-layer welding, must wait before a weld completely cooled, then the next weld bead.

titanium heat exchanger is a high quality titanium tubing by hot fluid will be part of the heat transfer to the cold fluid heat transfer equipment. With the many advantages of titanium heat exchanger industrial pure titanium, chemical, petroleum, power, food and many other common devices in the industrial sector, plays an important role in production.

Titanium is a metal with a strong passive tendencies. Dielectric oxide film of titanium at temperatures below 315 ℃ always maintain this characteristic. In order to improve the corrosion resistance of titanium, developed oxidation, electroplating, plasma spraying, ion nitriding surface treatment technology, ion implantation and laser processing of titanium oxide film played a role in enhancing the protection, access to the desired corrosion resistance effect. For sulfuric acid, hydrochloric acid, methyl amine solution, the high temperature and high temperature chloride wet chlorine produced in the need for metal materials, development of a titanium - molybdenum, titanium - palladium, titanium - molybdenum - and a series of corrosion resistant nickel titanium alloy.
-32 Titanium castings using a titanium-molybdenum alloy, for often pitting or crevice corrosion environments using titanium -0.3 -0.8 partial molybdenum-nickel alloy or titanium equipment -0.2 using titanium-palladium alloy, have received a very good use effect. Good heat resistance of titanium wire, new titanium or long-term use at higher temperatures 600 ℃.

titanium bar stock
Titanium Alloy Plate
titanium electrodes for chlorinator cell

high strength and high toughness β-type titanium alloy.

β-type titanium alloy was first used by the mid-1950s, the company developed the American Crucible B120VCA alloy (Ti-13v-11Cr-3Al). β-type titanium alloy has good hot and cold processing performance, forging, can be rolled, welded, through the solution - get high mechanical properties, good environmental resistance and strength and fracture toughness of a good match aging treatment. The new β-type titanium alloy high strength and high toughness most representative are the following [26'30]:
   Ti1023 (Ti-10v-2Fe- # al), the alloy commonly used in aircraft structures 30CrMnSiA performance is quite high strength structural steel, forging excellent performance;
   Ti153 (Ti-15V-3Cr-3Al-3Sn), the alloy cold better performance than commercially pure titanium, room temperature tensile strength after aging up to 1000MPa or more;
   β21S (Ti-15Mo-3Al-2.7Nb-0.2Si), a new anti-oxidation of the alloy is titanium metal by the US division of the company Timet developed, ultra high strength titanium alloy, has good oxidation resistance, hot and cold workability quality, can be made of a thickness of 0.064mm foil;
Japan Steel Company (NKK) the successful development of SP-700 (Ti-4.5Al-3V-2Mo-2Fe) titanium alloy, the alloy high strength, superplastic elongation up to 2000%, and the superplastic forming temperature than the Ti-6Al- 4V low 140 ℃, can replace Ti-6Al-4V alloy with super plastic forming - diffusion Bonding (SPF / DB) technology to produce a variety of aerospace components;
   Russia developed the BT-22 (TI-5v-5Mo-1Cr-5Al), the tensile strength of up to more than 1105MPA

Note the use of titanium wire

1, construction workers and welders should wear clean white fine gauze gloves (non-wearing cotton gloves).
2, the weld area treated and non-contact touch iron items.
3, welding work as much as possible in the room, the ambient wind speed should ≤0.5m / s, to avoid influence by drafts.
4, should be as short arc welding using welding, using a small welding heat input, the angle between the nozzle and the weldment maintain 70 to 80 degrees.
5, when the takeover tack welding, butt gap is generally about 0.5mm.
6, each weld seam should be possible once completed, must be connected to the welding seam, before welding the interface should be clean, welding meat lap length of 10 ~ 15mm.
7, welding, torch should not swing around, the end can not be removed from the wire melting gas reserve.
8, arc welding should advance aspirated, not lifted immediately when the torch arc, gas should be delayed until the temperature drops below 250 ℃.
9, gas mask and dragged away from the torch should be the shortest better, with the gap between the wall and strive to minimize contact. When the tube butt welding, forming side welding in order to achieve the requirements of the welding carried out twice: once for the back cover welding (weld when you can not back fill material) and the other for forming welding. When the multi-layer welding, must wait before a weld completely cooled, then the next weld bead.

Titanium appear strong growth in the US military applications

     International Titanium Association 2010 annual meeting, the company's vice president of business JamesBuch titanium said that while the US economy saddled with 13 trillion in debt, but the rise in the military applications of its gains from titanium, is gradually offset the defense Department of "efficiency first" management philosophy major economic losses caused.
Secretary of Defense has developed a five-year plan, prepared to allocate $ 100 billion military spending from the regular fee to the front of this piece, so that critical resources "good steel used in the blade." The Pentagon's decision to make the transfer of resources to position equipment, military titanium demand will rise 28 percent over the next five years.
     However, despite some of the higher demand for air-ground titanium military hardware production plans will benefit from this, there are some important consumer items sacked titanium, such as F-22 fighter aircraft, C-17 transport aircraft. Future Combat Systems plans to develop even Brigade Combat Team will also be blocked, and strike a blow for the chariot development.
     Among these, F-22 Raptor stealth fighter announced early shutdown is the most impressive. F-22 production in advance of the end of each year will be reduced by 1,300 tons of titanium metal needs. Annual production of C-17 will also benefit from a reduction of 15 to 10 driving driving, titanium annual demand minus 400 tons.
Heavy armor, such as Stryker MSG, Bradley infantry fighting vehicles and VBC1 year is expected to consume more than 1000 tons of titanium. Meanwhile, light vehicles is an increasing demand for titanium. Application of titanium help reduce body weight. Doors and other parts of the Hummer assault vehicles are used titanium, so that the weight of these parts than ordinary steel in terms of reducing the 30%.
      Similarly, the application of Titanium Alloy Plate armor plating board to help solve the MRAP vehicle (MRAP) vehicle overweight problems.
The next step will be mainly used titanium Joint Light Tactical Vehicle (JLTV) manufacturing. In October 2008 the US military and three companies signed contracts JLTV technical design, trial production car will be deployed in 2013, to achieve normal production in 2015. Thus, the US combat transport will increase again in titanium demand of 1,000 tons. The next five years, the Joint Strike Fighter for military titanium consumption growth is essential. However, the decline in the number of aircraft in service, an extension of the production will reduce annual demand for titanium 500-600 tons. F-35 and Boeing re-development and design of F-18 fighter production will lead to greater demand for titanium metal. US Navy Reserve F-18 124 driving after delivery in 2018, while Boeing F-18 also wants to sell Israel as a light reconnaissance aircraft, South Korea and other countries. US military machine the fastest growth in demand from the Middle East market. United States and India are currently involved in 10 riding on a C-17 transport aircraft transaction negotiations. While the US has reached a value of $ 25 billion in co-production program with Russia, aimed at driving additional 250 fifth-generation fighter for the national fleet.
Yesterday the Indian government procurement agencies for its second-generation Tejas light combat aircraft purchased the GE-414 engine, the models in terms of performance and F-18 has a certain commonality.

Specialsteel

Specialsteel also called Excellent steel. Specialsteel is divided into ordinary steel and excellent steel, which is a measure of a country gifted steel can become an important symbol of steel power. Chinese manufacturing growth for the domestic special steel development provides a space for sustained and rapid development of the manufacturing industry, especially machinery, automobiles, machinery, shipbuilding and other industries, strong demand for gifted Steel to become directly support the excellent steel market power.There are different types of specialsteels,such as Titanium heat exchanger,Titanium Alloy Plate,Copper Nickel Pipe,Ti Sheet,Titanium Sheet Metal,Ti Plate,Titanium metal supply,Titanium welding wire and Copper Nickel Tube.You can click them to know more details:)

Chemical properties of titanium

Titanium at high temperature, the reaction can occur with many elements and compounds. Various elements, according to their different reactions occur with titanium can be divided into four categories:
First class: the halogen group element and titanium and oxygen covalent bond and ionic bond compound;
II: transition elements, hydrogen, beryllium, boron, Group C and Group pnictogen titanium intermetallic compound and solid solution is limited;
The third category: zirconium, hafnium, vanadium family and chromium family, Scandium infinite solid solution with the formation of titanium;

The fourth category: an inert gas, alkali metal, alkaline earth metals, rare earth elements (except scandium outside

Titanium Production: United States, Russia, Japan and China dominating the semi-finals

Because smelting technology is complex and difficult process, currently only the United States, Russia, Japan, China, the four countries to grasp the full titanium industrial production techniques, the formation of the semi-finals dominating the landscape of the world. Also in Europe, although no titanium sponge industry, but titanium processing and application technology in the world advanced level. Ukraine and Kazakhstan inherited the former Soviet Union part of titanium sponge industry.

Titanium processing timber producing countries including China, the United States, Russia, Japan and Europe. Since 2010, Chinese production of titanium mill ranks first in the world, Baoji Titanium Valley is famous for the country. With the global economic recovery, civil aviation began a slow recovery, which led to titanium demand growth in 2010, the global titanium sponge and titanium mill production was restored. 2011 global titanium sponge production reached 206,000 tons, an increase of 29.2%. 2011 global titanium mill production reached 148,000 tons, an increase of 32.5%.