2014年7月30日星期三

titanium casting shrinkage behavior also medical titanium plate

Titanium tube shrinkage behavior change
 Like other metals, titanium casting shrinkage behavior also experiencing solidification from the liquid to the solid state and then changes
Such behavior will usually shrink shrinkage and linear medical titanium plate shrinkage divided . Shrinkage reflects the titanium casting process changed the entire volume of
Technology , due to the shrinkage amount equal to the total concentration of shrinkage of the casting volume plus the volume shrinkage , and therefore caused alloy casting process condensate
Solid body shrinkage behavior and alloys contraction , determine titanium standards drilling alloy shrinkage, shrinkage defects characteristic for understanding titanium tube shrink
Forming a hole shrinkage defects is important.
    Important factors include titanium alloy solidification shrinkage tube elements , mold materials and mold structure. Since the alloying elements
Will ring -shaped titanium tube crystallization temperature titanium strip interval , as its effects on liquidity , like titanium tube depends primarily on the solidification shrinkage
Characterized in that alloying elements , i.e., the size of the crystallization temperature of the titanium alloy is formed between the spacing elements on . Crystallization temperature
Degree intervals narrow eutectic alloy tube good fluidity, easy to form a concentrated shrinkage, while the crystallization temperature interval wide titanium tube mobility
Poor, easy to form a dispersion of shrinkage, ie shrinkage .

2014年7月27日星期日

High temperature titanium rods mainly Tilloo surgical implant titanium

Titanium rods can withstand high temperatures range 
   High temperature titanium rods mainly Tilloo, medical titanium plate IMI834, Ti6242, BT20, mainly used for aero-engine structures. To meet the special requirements of high-temperature and high-temperature creep strength, which Till00 and IMI834 the temperature up to 600 ℃. 
     In order to improve the use of titanium rod temperature, reducing the weight of the material, titanium-aluminum-based metal between sets of objects has been attracting much attention, due to the difficulty of forging, casting more medical grade titanium suitable for forming a titanium aluminum, has a lot of engine parts, or are ready to adopt titanium-aluminum-based material casting, the world's major engine manufacturers GE, PwA, Rolls-Roycc have asked for Ti-A1 metal compounds in-depth research, such as the United States Howmet TiAl low pressure turbine blades are studying, and used to replace the cast Inco713 leaves, using a temperature of 650-700 ℃; GE company is the Ti48A12Cr2Nb fifth stage low pressure turbine blades for the CF6-80C engine temperature titanium standards up 760Y, successfully tested / 1500 analog K line cycle.

2014年7月22日星期二

There are two isomeric titanium crystals surgical implant titanium


Titanium is a titanium- based alloy by adding other elements
There are two isomeric titanium crystals : Below 882 ℃ for the close-packed hexagonal structure α titanium , titanium above 882 ℃ for the body-centered cubic β .surgical implant titanium  Alloying elements according to their effect on the phase transition temperature can be divided into three categories : ① stable α -phase , improving the phase transition temperature of the elements of α stabilizing element , aluminum , carbon, oxygen and nitrogen . Which aluminum is the main alloying elements titanium, improving its strength at room temperature and high temperature alloys , lower specific gravity, increased elastic modulus have a significant effect . ② stable β -phase, reducing the element of the phase transition temperature of β stabilizing element , and can be divided isomorphous and eutectoid two . The former molybdenum , niobium, vanadium, etc. ; latter chromium, manganese, copper, iron , and silicon. ③ small element of the phase transition temperature of the neutral elements , zirconium and tin .
Oxygen, nitrogen, medical titanium plate carbon and hydrogen are the main impurities of titanium . Oxygen and nitrogen in the α phase has a greater solubility of the titanium alloy has a significant strengthening effect , but the plastic drop. Typically provide oxygen and nitrogen content of titanium in the 0.15 to 0.2% and 0.04 % to 0.05% or less , respectively . The solubility of hydrogen in the α phase is very small , titanium dissolved in excess hydride hydrogen will produce the alloy brittle. Titanium is usually controlled hydrogen content of 0.015% or less. The hydrogen dissolved in the titanium is reversible , vacuum annealing can be removed .

2014年7月18日星期五

due to the shrinkage amount equal medical titanium bar

Titanium tube shrinkage behavior change
 Like other metals, titanium casting grade 2 titanium shrinkage behavior also experiencing solidification from the liquid to the solid state and then changes
Such behavior will usually shrink shrinkage and linear shrinkage divided . Shrinkage reflects the titanium casting process changed the entire volume of
Technology , due to the shrinkage amount equal to the total concentration of shrinkage of the casting volume plus the volume shrinkage , and therefore caused alloy casting process condensate
Solid body shrinkage behavior and alloys contraction , surgical implant titanium determine drilling alloy shrinkage, shrinkage defects characteristic for understanding titanium tube shrink
Forming a hole shrinkage defects is important.
    Important factors include titanium alloy solidification shrinkage tube elements , mold materials and mold structure. Since the alloying elements
Will ring -shaped titanium tube crystallization temperature interval , as its effects on liquidity , like titanium tube depends primarily on the solidification shrinkage
Characterized in that alloying elements , i.e., the size of the crystallization temperature of the titanium alloy is formed between the spacing elements on . Crystallization temperature
Degree intervals narrow eutectic alloy tube good fluidity, medical grade titanium alloy easy to form a concentrated shrinkage, while the crystallization temperature interval wide titanium tube mobility
Poor, easy to form a dispersion of shrinkage, ie shrinkage .

2014年7月16日星期三

Rolls-Roycc have asked for Ti-A1 metal medical titanium plate

Titanium rods can withstand high temperatures range 
   High temperature titanium rods mainly Tilloo, surgical implant titanium IMI834, Ti6242, BT20, mainly used for aero-engine structures. To meet the special requirements of high-temperature and high-temperature creep strength, which Till00 and IMI834 the temperature up to 600 ℃. 
     In order to improve the use of titanium rod temperature, reducing the weight of the material, titanium-aluminum-based metal between sets of objects has been attracting much attention, due to the difficulty of forging, casting more suitable for forming a titanium aluminum, has a lot of engine parts, or are ready to adopt titanium-aluminum-based material casting, the world's major engine manufacturers GE, PwA, medical grade titanium alloy Rolls-Roycc have asked for Ti-A1 metal compounds in-depth research, such as the United States Howmet TiAl low pressure turbine blades are studying, and used to replace the cast Inco713 leaves, using a temperature of 650-700 ℃; GE company is the Ti48A12Cr2Nb fifth stage low pressure turbine blades for the CF6-80C medical titanium plate engine temperature up 760Y, successfully tested / 1500 analog K line cycle.

2014年7月15日星期二

surgical implant titanium eliminates a lot of the subsequent processing steps

Cast titanium amazing development speed
  Into the 1950s , as the representative of the medical grade titanium alloy United States Bureau of Mines research and production facilities for titanium 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 alloys 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 manufacturing costs. According to statistics, titanium forgings material utilization is generally not more than 20 %, while the common titanium alloy casting material utilization is 50% , for precision casting is as high as 70% or more , which can be seen medical titanium plate the great potential of titanium alloy casting .
    Hehe titanium castings in the aerospace engine usage and comparison of forgings , can be seen, titanium castings with clear growth trend will gradually reach the amount of titanium forgings for each equivalent level. In particular, the application of cast titanium 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 titanium alloys . In China, for example , titanium plates for sale the country 's GDP growth in recent years, casting titanium rose more than tenfold. I cast titanium alloy and is in a stage of rapid development .

2014年7月11日星期五

medical titanium plate announced the first batch of provincial

Promote the development of strategic emerging industries in Guangdong titanium and other industries
Recently, Guangdong Province, announced the first batch of provincial list of strategic emerging industries backbone enterprises , mainly in Guangdong Fuyuan Rare Earth New Materials Co., Ltd., Huizhou Wei Li billion , Ltd. and other 50 enterprises , medical titanium plate which will stimulate the non-ferrous metals development, and a good opportunity for development.
September 2010 , the State Council energy saving and environmental protection, new generation of information technology, biotechnology , high-end equipment manufacturing, new energy, new materials and new energy vehicles, seven strategic emerging industries , and pointed to nurture become the leading industries and pillar industries of the national economy .
The first strategic emerging industries in Guangdong backbone enterprises in this context is generated .
It is understood that these 50 enterprises in Guangdong Huizhou, respectively Unihero Semiconductor Lighting Technology Co., Ltd. , Guangdong Fuyuan Rare Earth New Materials New Materials Co., Ltd., Shenzhen BYD Auto Co., Ltd., and other new energy vehicles , the development of these companies are from not open some of the key applications of metallic materials , such as lithium , tungsten, molybdenum , titanium, antimony , medical titanium plate rare earth and other small metal , which will bring opportunities for the development of non-ferrous metals .
Vice President of China Nonferrous Metals Industry Association ShangFuShan Speaking "Twelve Five" China's nonferrous metals industry task when it comes to attention to " strategic emerging industries nonferrous metals under development opportunities ." He pointed out that , to accelerate the development of new materials related to non-ferrous metals , are: high performance copper, aluminum, magnesium , tungsten, molybdenum , tantalum, niobium alloys ; performance rare earth materials ; High Performance precious metals ; high performance polycrystalline silicon, single crystalline silicon material ; high performance battery materials ; superconducting materials.
Experts believe that promoting the development of emerging strategic industries will result in some small metal revaluation , and stimulate the development of high-end products, basic metals .
"Twelve Five-Year" period, China's production capacity to form a surgical implant titanium group of high-end products , including high-precision copper plates with 600,000 tons , 850,000 tons of precision copper , 500,000 tons of electrolytic copper foil .