Titanium alloy for manufacturing automatic rifle

The strength of titanium, titanium tensile strength up to 180kg/mm2. Some of the strength of the steel is higher than that of titanium alloy, but the titanium alloy than strength (tensile strength and density ratio) was more than the high quality steel. Titanium alloy with heat resistant strength, low temperature toughness and fracture toughness is good, so it is much used for aircraft engine parts and rocket, missile structure. Titanium alloy can also be used as a fuel and oxidizer tank and high pressure vessel. Now has a titanium alloy for manufacturing automatic rifle, the launch tube of mortar base plate and recoilless gun. In the oil industry titanium coil mainly for various vessel, reactor, heat exchanger, distillation tower, pipe, pump and valve etc.. Titanium can be used as electrode and a power station condenser and environmental pollution control device. Titanium nickel shape memory alloy has been widely used in instruments. In the medical treatment, titanium can be used as artificial bones and various utensils. Titanium or steelmaking deoxidizer and stainless steel and alloy steel components. Titanium dioxide pigment and paint is a good raw material. Titanium carbide, carbon (hydrogen) is a new type of titanium carbide materials. Titanium nitride color close to gold, widely used in decoration. Titanium and titanium alloys used in large quantities for the aviation industry, "space metal" known; in addition, is widely used in the shipbuilding industry, chemical industry, titanium sheet machinery parts manufacturing, telecommunications equipment, hard alloy, etc.. In addition, because the titanium alloy also has good compatibility with the human body, so the titanium alloy can also be used for artificial bone. The corrosion resistance of titanium zirconium nitrate and hydrogen titanium zirconium oxide is a kind of application in the atomic energy industry and used as a corrosion resistant chemical materials under high temperature and pressure, but in the lively after sodium solution. Then, the titanium hydroxide solution added live wave zirconium nitrate solution, will find that to shut sb. titanium zirconium nitrate. As you can see, there are the obvious layered graph, the above is zirconium nitrate, below is the titanium hydroxide. We know, titanium hydroxide is less than the density of zirconium nitrate, but can still maintain the obvious stratification, and zirconium nitrate stay in the upper, which proves that the corrosion resistance of titanium. According to the experiment, titanium into the ocean of annual 20~50 won't be corroded.

Titanium alloy plate prices

Titanium alloy plate at the current price trend is not particularly good, the recent domestic titanium plate market demand are relatively sluggish, prices remain low stage, the short term, the market price will be difficult to recover, the current 2mm pure titanium plate price in the 105-115 yuan / kg (15.51-16.99 dollars / kg). Titanium is a metallic titanium coil element, grey, atomic number 22, relative atomic mass 47.87. Combustion in nitrogen, high melting point. Blunt titanium and titanium based alloy is a structure with new materials, mainly for the aerospace industry and marine industry.
Titanium density of 4.506-4.516 g / cubic centimeters (20 DEG C), higher than that of aluminum and iron, copper, nickel below. But in the first than the strength of the metal, is 3 times of stainless steel, is the aluminum alloy [colored business: 1.3 times of the aluminum alloy plate]. The melting point of 1668 - 4 DEG C, the latent heat of fusion of 3.7-5.0 kcal / atom, the boiling point of 3260 plus or minus 20 DEG C, the latent heat of vaporization of 102.5-112.5 kcal / atom, the critical Aerospace titanium castings temperature of 4350 DEG C, the critical pressure of 1130 atm. Poor thermal conductivity and conductive properties of titanium, similar to or slightly lower than stainless steel, titanium superconductor, superconducting critical temperature of pure titanium 0.38-0.4K. At 25 DEG C, titanium heat capacity is 0.126 cards / atom and degree, 1149 card / molecular enthalpy, entropy is 7.33 cards / atom and degree, metal titanium is paramagnetic material, permeability is 1.00004. Titanium has plasticity, extending high pure titanium rate can reach 50-60%, section shrinkage rate of 70-80%, but low strength, not as structure material. Titanium in the presence of impurities, a great influence on the mechanical properties, especially the interstitial impurities (oxygen, nitrogen, carbon) can greatly improve the strength of titanium, significantly reduced its plastic. Good mechanical properties with titanium as a structural material, through strict control of the impurity content is appropriate and adding alloy elements and to achieve.

Titanium alloy technology

Titanium alloy is with titanium alloy added other elements. There are two kinds ofdifferent titanium crystal: 882 DEG C for close packed six party structure titanium, 882 DEG C beta titanium as the body centered cubic.

Alloy elements according to their influence on the phase transition temperature can be divided into three categories:

A stable alpha phase, increase the titanium bicycle frames phase transition temperature of the element as thealpha stable elements, aluminum, carbon, oxygen and nitrogen. The aluminum is the main alloy titanium alloy elements, it is to reduce the quality of the alloy at room temperature and high temperature strength, elastic modulus, increase proportion has obvious effect.

The stability of beta phase, reduce the transition titanium bicycle part temperature element for beta stableelements, can divide again isomorphous and eutectoid type two. The application oftitanium alloy products, the former are molybdenum, niobium, vanadium, manganese,chromium; the latter are copper, iron, silicon, etc..

The phase transition temperature has little effect on the element as the neutralelement, a zirconium, tin etc.. Oxygen, nitrogen, carbon and hydrogen are the mainimpurities in titanium alloy. Oxygen and nitrogen has greater solubility in the alphaphase, there are significant strengthening effect of titanium alloy, but the plasticity decreased. Usually the provisions of oxygen and nitrogen in titanium content in 0.15 ~0.2% and 0.04 ~ 0.05% below. The solubility of hydrogen in the alpha phase is very small, too much dissolved in titanium alloy hydride hydrogen will be produced, the alloy brittle. Usually in titanium alloy hydrogen content of 0.015% control in the following. Dissolved hydrogen in titanium is reversible, can be used to remove thevacuum annealing.