2015年10月30日星期五

titanium foundry Titanium what the benefits of the human body

Titanium has a " pro-biotic " ' sex . In the human body , corrosion resistant and non-toxic secretions , have to adapt to any sterilization method . It is widely used in making medical devices, making artificial hip, knee, shoulder , flank joints, skull , active heart valves , bone clip. When a new packet in the annulus muscle " titanium -bone" , these titanium bone began to maintain the body's normal activities . Titanium is widely distributed in the body , the content of the normal body weight not exceeding 70kg per 15mg, its role is unclear. However, titanium can stimulate phagocytic cells, the immune system has been proven to enhance this role.
Characteristics of titanium itself has not titanium investment casting the high hardness and light rust deterioration, resulting in a stable metal or metal allergies .
Titanium has a special current characteristics of the human body will produce beneficial physiological effects and its chemical stability, and will not produce the change or deterioration.
Titanium beneficial to humans , and quite safe , very fit body . Because titanium products will settle the current body , relieve muscle tension state, therefore, the spirit will get loose , will gradually relax the muscles , and improve athletic performance.
Titanium treatment principle
Titanium is a hard, rust security features , metal hypoallergenic . Is widely used in medicine and sports fields. This light metal has the ability to regulate the body's natural currents through cell ionization . Titanium has a special current characteristics of the human body will produce beneficial physiological effects and its chemical stability, will not produce the change or deterioration, beneficial to human health. Therefore, the use of titanium products can achieve mental relaxation, muscle relaxation, improve the effect . Increased body temperature , increased heat will relax the muscles and stimulate blood flow , increased blood flow helps your body better to remove blood from the effect of pain and fatigue factor . Effectively control the current disorder in the body . Pain and discomfort eliminate immediately . For bursitis , sciatica , headaches these types of arthritis and premenstrual syndrome have a significant role to alleviate short-term pain . By adjusting the current body to relieve muscle pain and stiffness, improve blood circulation. For these reasons , this product is subject to many Japanese marathon runners and athletes alike. Professional sports figures better reflect the movement of the flow rate , the faster the reflection time , and improve athletic performance .
In recent years, with the development of the electronics industry, has become a well-known germanium semiconductor material excellent . titanium investment casting Scientists have recently discovered that it is not only the electronics industry "food " and singular role in human health , cancer, the cancer .
Germanium in the human body functions are manifold. First, because it has the dehydrogenation capacity , enabling the body to maintain adequate oxygen , thereby safeguarding human health. In humans, the decomposition is carried out by means of oxygen . Food decomposition process , need to consume oxygen , water and carbon dioxide while . Without sufficient oxygen , it is possible to make the body to cause disease. The human body can germanium hydrogen ions out of the body to reduce the demand for oxygen , which is conducive to health. Japanese scientists added dimethyl germanium oxide polymer in honey become popular health products.
The most attention is organic germanium ( Ge dicarboxyethyl trioxide ) anti-cancer effect. According to the study and practice has proved that organic germanium with the body's " waste" with the body and the blood vessel wall excess protein and cancer will be adsorbed , 20 to 30 hours later, with a "waste " of germanium, will automatically excreted from the body . Cancer patients the blood is hypercoagulable state , slowing blood flow velocity , cancer easily attached to the vessel wall , invasion and destruction of the vessel wall. Meanwhile, the blood viscosity, easy to form blood clots, wrapped up the cancer cells , the drug is difficult to work. Since organic germanium has a role in lowering blood viscosity , which can slow down the effect, have anti-cancer effects .
Pure germanium ( 99.999 %) of the function:
( 1 ) enhance immune function
( 2 ) regulation of blood pressure , blood lipids , blood glucose and other physiological functions.
( 3 ) the role of a wide range of cancer treatment .
( 4 ) with anti- carcinogen effect.
( 5 ) has a variety of disease prevention and health functions.
( 6 ) has significant anti-aging effects.
( 7 ) has a whitening cosmetic effect.
( 8 ) of germanium in metabolism , contains multiple Ge-0 bond , with strong oxidative dehydrogenation capacity. With human hemoglobin to ensure aerobic metabolism of cells. Since it set out to capture the negatively charged oxygen metabolites in atomic hydrogen , played the role of partial purify the blood , and therefore beneficial to patients with senile dementia rehabilitation .
Scientists pointed out that the human body functions such as metabolism, energy conversion , resistance to diseases, cardiovascular , nervous , reproductive and other functions , ge participation. Germanium in the traditional anti-aging medicine, such as high ginseng , Ganoderma lucidum , wolfberry content and believe anti-aging and pharmacological effects of ginseng , and germanium content related . After the 1970s , with the research results of clear , organic germanium , becoming " star shocked the world medical community ." Since it is no longer seen as a simple germanium semiconductor material . Germanium can be anti -virus, kill bacteria , strengthen the immune system , stimulate white blood cells, regulate cholesterol , for human health and enhance disease prevention to contribute .
Germanium is the first 32 elements , atomic weight 72.59 . Germanium has long been used in many areas of modern high-tech communications, computer , space development , energy use , and now found that germanium has hydrogen ions combine with the body the ability to discharge urine or sweat way to enhance the body of oxygen supply , accelerate metabolism and delay cell aging.
There are many physiological functions of germanium . So extend the life of laboratory animals is the most powerful anti-aging indicators . Experiments show that the amino acid germanium oxide can extend the life of fruit flies and the highest average life expectancy . Organic germanium metabolites of anti-aging body's role , it is conducive to anti-aging.
Even a small amount of pure germanium , but also can enhance the body's energy production. It can improve the utilization of oxygen , can hypoxia, the damaged cells to regain control of their homeostasis . Basic and clinical cancer research organic titanium investment casting germanium , have been widely reported abroad . Organic Germanium can induce cells to secrete interleukin and interferon, stimulate the host 's defenses against cancer
Germanium also has high whitening Beauty youthful effect can be made from a variety of skin care products, during pregnancy or abnormal pigmentation caused by sun spots with aplomb scavenging effect , but also the treatment of acne , eczema and underarm odor.




2015年10月29日星期四

‍The first half of 2013 to run the National titanium industry overview

1,production
The first half of 2013 the country produced titanium sponge 41015t ( first half of 2012 the production of titanium sponge 37454t), inventory 8460t. An increase of 9.5% titanium sponge , but the stock more than at the end of 2012 3660t 4800t. Taking into account the first half of 2012 titanium golf clubs titanium sponge basically no inventory in the first half of 2013 , sales of titanium sponge in fact declined by 3.3%.
The first half of 2013 , the country produced titanium ingots 22079t, down 32.0% .
In the first half of 2013 , the country produced titanium mill 22688t ( first half of 2012 production of titanium mill 30158t), down 24.8%.
2,import and export The first half of 2013 , the country imported titanium sponge 346.5t, an increase over last year 's 301.7t 44.8t; export 2309t, fell by 26.4%. Since the decline of foreign demand, capacity rises , leading to an increase in imports of titanium sponge , exports fell .
In the first half of 2013 , the country imported titanium mill 2254t, down 16.3% ; export titanium mill 4815t, down 19.9%. Titanium processing timber imports and exports both declined .
3,the price situation
Since the second half of 2012 , the price of titanium ingot price , all the way down , as of July 2013 level of titanium sponge prices have fallen below 50,000 yuan / t mark, dropping to 49,000 yuan / t. TA2 class standard 3.0mm thick titanium plate prices have fallen 125,000 yuan / t. Both to historical lows.
1-3 from the above situation, the first half of 2013 due to weak demand , prices dip , titanium industry in the preservation of basic operations .
4 Highlights
 long been recognized due to the current situation , most enterprises to adapt to industrial transformation and upgrading of national policy , pay close attention to internal technical and management upgrading, handling skills , reduce costs , in order to survive.
Since optimistic outlook for the titanium industry , most companies are targeting the industry marine, aviation and medical titanium products for technology development, as many SMEs are actively developing titanium tubing, technically a step ahead in order , so as to promote industry-wide technology enhance the level .from import and export data, the first half of 2013 , exports of the country pipe greater than imports , this is the first time with a net exporter in the pipe, which indicates that domestic processing capacity and level of titanium tubing had a great progress.
5,the proposed
hope to establish purchasing and storage Titanium Casting Manufacturer policy normalization titanium products , titanium products, especially now at the lowest price when the titanium products, purchasing and storage , the state of the industry are very favorable .
hope to further encourage titanium , zirconium export products , especially hoping to carry out timely titanium, zirconium products processing trade business, while ensuring environmental protection of the premise, to promote the stable development of titanium, zirconium industry.



2015年10月28日星期三

titanium foundry casting titanium and titanium alloy pressure

Good melting of titanium with a certain degree of superheat liquid by turning the crucible, casting by pouring cup was sent to the room, under the effect of pressure die-casting rod, casting type liquid titanium foundry into the cavity from the casting room, die casting good at casting type inner packing, cooling, and then removed. To eliminate casting surface may produce cold traps, flow marks or other defects due to cast, especially the thin edge. Die-casting should be preceded by the type of warm-up. Arc melting is used as a heating source, in addition, a vacuum aerospace titanium may also be used in induction heating, electron beam heating, or the suspension smelting. Heat-resistant steel casting-type material used in severe erosion by liquid titanium foundry molybdenum or special places may be inlaid graphite block. Casting chamber die casting machine uses heat-resistant alloy. Pressing the piston head with a molybdenum alloy or heat-resistant alloy. Type casting surface roughness should not be less than Ra≈0.6μm, otherwise, it should affect the surface quality precision castings. To improve the life of the mold and die casting part, a lubricant may be sprayed on their work surface.


2015年10月27日星期二

mouth + Lu titanium

mouth + Lu titanium General population + Lu also called two-phase titanium alloys, organize its equilibrium state with a phase -based, Lu phase content is usually from 9% to 30%. Two-phase titanium alloy has good mechanical properties, strength
Above the mouth of titanium alloy can be heat strengthened , heat stress processing, and some mouth + Lu titanium ( eg TCll) heat resistance is relatively good, but the stability of such organizations titanium investment casting relatively poor population ( refer to
LU decomposition of phase ) . Low oral phase content Lu + Lu good weldability of titanium , but with the increase in the content of Lu phase welding performance gradually deteriorates.
Mouth + ∥ Titanium is the most widely used of a class of industrial titanium . If TC4, TCll journal , respectively, for the front of the engine , drive parts, leaves and other key structures before the casing material . TC4 (Ti.6AI.4V) is a typical representative of such a titanium alloy , titanium alloy products present in all 60% of Ti. 6A1.4V, and titanium consumption accounts for about 80% of the aircraft structure . The fourth -generation fighters such as the American F. Accounted for 41% titanium with the body 22 of the total weight , wherein the Ti. 6A1.4V alloy consumption accounted for 36% of total body weight [ 91. Mouth + Lu domestic titanium alloy grades for TC followed by the serial number , as the largest amount of TC4. And TCll etc.



2015年10月26日星期一

Titanium ingot prices titanium industry challenged

In the case of the current downturn in the industry, the giant titanium ingot prices still maintained a good performance. Said that since the outbreak of the international financial crisis, many foreign companies reduced orders more, but not export giant titanium ingot prices affected. The company specializes in the production cell equipment. The company has in the country looking for the special process to produce high quality titanium ingot price composite rods. Giant titanium prices have developed according to the needs of the enterprise to create a high-performance, specifically titanium copper composite rod, successfully won the national invention patent. Giant titanium ingot prices in the course of many years of cooperation with the company in the formation of a stable relationship between supply and demand, so the order has been less affected.


2015年10月25日星期日

Impact on performance titanium heat treatment cycle

The phase transition in titanium stress is small, with a simple heat treatment, it is difficult to change the original casting organizations, especially the grain boundary organization. 
To refine casting titanium organization, people were cycling in the heat treatment. Volume effect of the use of the accumulation phase, resulting in 
And increased stress, prompting aerospace investment castings recrystallization, resulting in multilateral and grain refinement sheet of tissue. 
     Experimental results show that the alloy has Ti6A14v thick widmanstatten, the P-phase region through a ten cyclic heat treatment (980 a 
500 ℃), enables thin sheet first roughening, and broken off, so that the structure refinement. Then a continuous grain boundary is not 
Change, and even some coarsening. titanium precision casting  If the cyclic heat treatment (980 a 500 ℃, 10 times the water-cooled ten 900 ℃, 2h air-cooled) before pre-
P first heated to a broken fire zone (1010 ℃, water quenching), become fully martensite after cycle heating and cooling, a grain boundary 
Disappeared or broken off, the degree of refinement and organizational uniformity will increase its alloys have significantly improved fatigue performance
.


2015年10月22日星期四

Titanium sponge powder titanium sponge Basic knowledge of titanium oxide

Titanium tetrachloride is an interesting liquid , which has a pungent smell shares ,will be great in the wet air white smoke - it is hydrolyzed into white titanium dioxide hydrogel . In the military , people took advantage of titanium tetrachloride, which shares a strange temper, as artificial aerosols. Especially in the ocean , titanium sponge water vapor and more, a release of titanium tetrachloride, a white smoke as the Great Wall , blocking the enemy's line of sight. In agriculture, the use of titanium tetrafluoride people to frost .Titanium oxide basic knowledge - barium titanate Barium titanate crystals have such characteristics : when it changes shape under pressure , generates electricity, a power will change shape. Thus , the barium titanate in an ultrasonic people , and it will produce a current pressure , the size of the current generated by it can detect the strength of the ultrasonic wave . Conversely , a high frequency current through it , it can generate an ultrasonic wave. Now , almost all of the ultrasonic instrument, to be used in barium titanate . In addition, there are many uses of barium titanate . For example: railway workers put it on the tracks below , to measure the pressure when the train passed ; doctors use it made of pulse logger. Barium titanate to do with underwater detectors, underwater eye is sharp , it is not only able to see the fish , but also you can see the reef , icebergs and enemy submarines under the water and so on.


2015年10月21日星期三

Material preparation technology of titanium casting

In vacuum or protective atmosphere, Aerospace titanium casting for smelting, casting castingprocess. The preparation process of titanium material. Titanium in molten state is very lively, has long been unable to find suitable and other material casting method, thecast titanium behind wrought titanium alloy 20 years. From 1956 to 1962 AmericanBaer (Beal), developed by vacuum consumable arc melting technology of the Titanium Castings Solidification, officially entered the industrial production. Based on thematerial performance is equal or close to the aviation titanium foundry, the cost is reduced by about 50%, and titanium casting technology has been rapid development.Expected in the near future, it will obtain the position and deformation of titanium alloyare equally important. Casting equipment and technology, vacuum consumable arc skull furnace is the main equipment for production of titanium castings, the principle is:in the furnace body, using Titanium casting cast or forged bar as the parent material electrode (anode), water-cooled copper crucible as a positive electrode, under vacuum atmosphere, low input voltage (25 ~ 40V) and high current the poles, close to the arc, melting titanium material consumable electrode tip, drop into the crucible, the formation of molten pool. Casting equipment and technology, vacuum consumable arc skull furnace is the main equipment for production of Aerospace investment castings, the principle is:in the furnace body, using titanium material cast or forged bar as the parent material electrode (anode), water-cooled copper crucible as a positive electrode, under vacuum atmosphere, low input voltage (25 ~ 40V) and high current the poles, close to the arc, melting titanium material consumable electrode tip, drop into the crucible, the formation of molten pool. In the cooling effect, a layer of shell forming copper cruciblewall and the crucible melt pool, protection against erosion,titanium foundry without pollution. When the weld pool growth crucible to sufficient amount, the blackout faultarc, promoting rapid electrode, flip the crucible, the molten titanium water injectionmold static or centrifugal rotation in. When the weld pool growth crucible to sufficient amount, the blackout fault arc, promoting rapid electrode, flip the crucible, the moltentitanium water injection mold static or centrifugal rotation in. Advantages of solidified shell furnace, high production efficiency, good control of alloy composition.Disadvantage is the metal superheat degree low, rapid casting and equipment largergating system. Casting quantity China maximum skull furnace is 500kg. America,former Soviet Union were about 1000kg. The other is in the stage of experimental study of titanium casting method with electron beam, plasma and cold wall crucibleinduction melting and casting method.


2015年10月20日星期二

Magnetic titanium and titanium alloy precision casting foundry

Improve pouring liquid metal mold in pressure but also by the electromagnetic force to the liquid metal to achieve, this approach is the magnetic casting. Its basic principle isto cast off the magnetic pump is installed in the liquid metal to pass, in order to establish the magnetic field; at the same time, DC are also introduced into this segment has established the field of liquid metal flow, in alternating magnetic and electric fields, the formation of the electromagnetic force direction and the liquid metal flow the same, in order to improve the liquid metal mold filling pressure. This method can be used to make the metal in the mould cavity flow than static casting by direct velocity metal indenters the runner to increase 2~2.5 times. In the use of such casting method has several points should be paid attention to:
1 liquid metal is poured into the runner must maintain the continuity of liquid metal flow, intermediate cannot appear to flow. So we must pay great attention to the spruesize design and electromagnetic pump and current value choice.
The 2 magnetic pump should be placed in the water outside the level, thereby reducing the consumption of metal casting system.
3 liquid metal mold filling should be carried out in magnetic pump pressure 0.01~0.05MPa, so as to ensure the liquid metal to flow speed requirements in the cavity, avoiding intermediate drying. In the mold is filled, we should raise the magnetic pump pressure to 0.12~0.3MPa, to improve the feeding ability of castings, castings appear to prevent hole.
4 in the design of gating system should make in this part of the runner of magnetic pump within the liquid metal in the last solidification, which must establish the following:casting solidification sequence -- other gating system -- magnetic pump ingate,because before the pressure can only be built magnetic pump and liquid metal in themold to maintain the liquid metal magnetic the pump runner in the no solidification.Cast researchers to adopt this method in investment casting ceramic shell casting thealloy compressor blade body length up to 260mm. When pouring the liquid metal fillingthe cavity of the blades is carried out in the electromagnetic pump pressure 0.035~0.04MPa condition. This ensures that the liquid metal to 1.4~1.7m/s in the cavity flow rate, thus ensuring the blade surface of cast no cold shut flow mark,forming good. The centrifugal casting this blade is the blade body twist, the presence of cold insulation and loose leaf surface of casting, qualified rate and low metalutilization coefficient.



2015年10月19日星期一

What is the metal titanium powder and titanium sponge powder what is the difference

Method the sponge metal titanium produced metal thermal reduction. % purity (quality) is generally 99.1 ~ 99.7. Impurity elements% (quality) a total of 0.3 ~ 0.9, impurity elements oxygen% (mass) of 0.06 ~ 0.20, hardness (HB) ranged from 100 to 157, according to the different purity of WHTiO to MHTi4 five grades. As the main raw material for the preparation of industrial Titanium alloy valve. Sponge titanium production is the basic link of titanium industry, it is titanium, titanium powder and other raw materials of titanium component. The ilmenite becomes four titanium chloride, then put in a sealed stainless steel tank, filled with argon, making them react with the magnesium metal, get "titanium sponge". The porous, "sponge titanium" is not used directly, also must put them in an electric furnace melting into a liquid, in order to cast titanium ingot. Sponge titanium production is the basic link of titanium industry, it is titanium, titanium powder and other raw materials of titanium component. The ilmenite becomes four titanium chloride, then put in a sealed stainless steel tank, filled with argon, making them react with the magnesium metal, get "titanium sponge". The porous, "sponge titanium" is not used directly, also must put them in an electric furnace melting into a liquid, in order to cast titanium ingot.


2015年10月18日星期日

Why study the reaction of titanium plates with steam

Tests carried out in a vacuum apparatus with a quartz microbalance in the spring . Reading accuracy is 4 × 10 - sample surface g / cm . Titanium Welded Tubes Mercury manometer measuring system connected to the reaction chamber using the pressure.
    Titanium iodide as a sample . Breaking titanium strip cold rolled to a rod 0.7 mm thick . Then cut the strip size is 9 × 25 mm sample . In order to eventually remove surface dirt , before the test sample with a finely sandpaper and etched in 7% HNO3 solution in HF.
    The tube is filled with distilled water and vacuum means connected to the plug and the device as a source of water vapor . In order to remove the dissolved water gasification will remain for some time in the water under the stars . Samples were heated to a predetermined temperature in a vacuum after the tube with water and the system is turned on, and set up the equilibrium vapor pressure corresponds to the temperature in the system . When the system is full , the system is filled with water and cut off the tube , Titanium heat exchangers and then tested in a closed volume.
    Under 800,850,900 and 950 ℃ and 14 mm Hg vapor pressure tested titanium plate and steam reaction.
    Kinetics of these tests indicate that , in the beginning stage of the reaction , the reaction with water vapor titanium plates subject to the parabolic law . After the reaction started after a certain period of time becomes linear parabolic law rule.
    In order to identify the effect of pressure on the reaction rate , once at 4 mm Hg pressure two experiments.
    Titanium plate during the reaction and steam , and any of metals, and also the reaction gas , is composed by a number of successive stages , in which the main are: 1 ) the gas molecules collide with the metal , 2 ) gas molecules adsorbed on the metal surface 3 ) the dissociation of the gas molecules , 4 ) through the surface of the film agent diffusion reaction product , 5 ) chemical reaction.
    The reaction rate depends on the speed of the pro stage . It was found that the reaction pressure is reduced because the rate of 5 /6 and steam manganese Titanium heat exchangers remains unchanged , so it should be acknowledged that the reaction speed depends on the diffusion of the reagents through the surface of the membrane , since it is the only one speed stage and the gas pressure independent.



2015年10月15日星期四

Impact on performance titanium heat treatment cycle

The phase transition in titanium stress is small, with a simple heat treatment, it is difficult to change the original casting organizations, especially the grain boundary organization.
To refine casting titanium organization, people were cycling in the heat treatment. Volume effect of the use of the accumulation phase, resulting in
And increased stress, prompting aerospace investment castings recrystallization, resulting in multilateral and grain refinement sheet of tissue. 


     Experimental results show that the alloy has Ti6A14v thick widmanstatten, the P-phase region through a ten cyclic heat treatment (980 a
500 ℃), enables thin sheet first roughening, and broken off, so that the structure refinement. Then a continuous grain boundary is not
Change, and even some coarsening. titanium precision casting  If the cyclic heat treatment (980 a 500 ℃, 10 times the water-cooled ten 900 ℃, 2h air-cooled) before pre-
P first heated to a broken fire zone (1010 ℃, water quenching), become fully martensite after cycle heating and cooling, a grain boundary 


Disappeared or broken off, the degree of refinement and organizational uniformity will increase its alloys have significantly improved fatigue performance.



2015年10月14日星期三

titanium sponge powder Titanium applications in medicine

Titanium applications in industrial manufacture increasingly broad ax , and the application in the civilian medical devices are also beginning to show common state. In medical applications , titanium can be used as a bone for transplantation into humans .
    According to the British " Daily Times " titanium sponge powder on November 4 daily to London from fog caused numerous traffic accidents , one of which is two cars rear-end , where a young couple on the spot on the car knocked dizzy and hurt women head has a lot of bleeding.
    With the help of enthusiastic people live under the hurt was taken to hospital immediately . Hospital emergency room staff immediately conduct the inspection, found that women significantly hurt the head hematoma , must undergo an operation and has more than 30 ml . During the surgery doctors found that the patient's head a little piece of bone , titanium sponge powder usually the bones to go back to fill in half a year later , then a piece of bone less how to do it now ? According to experts, doctors at the hospital explained: wound directly above the scalp , scalp has grown well, you can use a titanium plate to replace bone Jieshang Qu , because the long head swear on the scalp , so it will not affect hair growth , and will not affect beautiful lady , the surgery is very successful.


2015年10月13日星期二

titanium sponge powder Titanium applications in medicine

Titanium applications in industrial manufacture increasingly broad ax , and the application in the civilian medical devices are also beginning to show common state. In medical applications , titanium can be used as a bone for transplantation into humans .
    According to the British " Daily Times " titanium sponge powder on November 4 daily to London from fog caused numerous traffic accidents , one of which is two cars rear-end , where a young couple on the spot on the car knocked dizzy and hurt women head has a lot of bleeding.
    With the help of enthusiastic people live under the hurt was taken to hospital immediately . Hospital emergency room staff immediately conduct the inspection, found that women significantly hurt the head hematoma , must undergo an operation and has more than 30 ml . During the surgery doctors found that the patient's head a little piece of bone , titanium sponge powder usually the bones to go back to fill in half a year later , then a piece of bone less how to do it now ? According to experts, doctors at the hospital explained: wound directly above the scalp , scalp has grown well, you can use a titanium plate to replace bone Jieshang Qu , because the long head swear on the scalp , so it will not affect hair growth , and will not affect beautiful lady , the surgery is very successful.


2015年10月12日星期一

Casting titanium and titanium alloy

Traditional lost wax casting technology in the production of titanium prosthesis is not easy to succeed, because ti is very lively, high temperature easily and the atmosphere or package elements buried in feeding response. Therefore, titanium casting requires a special heat source model, special materials and prevent the titanium surface pollution equipment. Special dental dissolved atmosphere titanium casting: vacuum and inert gas protection law. Inert gas is argon and helium. Fusionmethods are: high frequency induction method and arc melting method. Casting methods: differential pressure casting, pressure casting and centrifugal casting method. Medical | education network collected differential pressure casting method is the metal melting chamber and the chamber pressure difference casting titanium and titanium alloy cast into the mold cavity. Pressure casting method is the protection ofinert gas at low pressure of melting titanium material, when the melted liquid titanium and titanium alloy to cast crossing, to be higher on the surface of titanium and titanium alloy liquid pressure, the liquid titanium cast into the mold cavity. In addition, the use of cast titanium metal crucible, crucible and high density graphite crucible. Metal crucible for copper crucible, and the use of arc melting method. Titanium casting forembedding material titanium casting. Also note that in the titanium casting process:casting thickness should not be less than 0.7cm, the exhaust channel setting, spruesetting, mould form, mold baking roasting temperature and casting mold temperature,mold cooling, the casting surface treatment method of different with cobalt chromium,nickel base alloy. Titanium in molten state is very lively, has long been unable to findsuitable and other material casting method, the cast titanium behind wrought titanium alloy 20 years. From 1956 to 1962 American Baer (Beal), developed by vacuum consumable arc melting technology of the Titanium Castings Solidification, officially entered the industrial production. In twentieth Century 70, began to be used in the field of Aeronautics and astronautics. From 70 time later, titanium alloy large thin-walled precision casting technology development and application. Based on thematerial performance is equal or close to the aviation titanium forgings, the cost is reduced by about 50%, and titanium casting technology has been rapid development.Expected in the near future, it will obtain the position and deformation of titanium alloyare equally important. Casting process and equipment of vacuum consumable arc skull furnace is the main equipment for production of titanium castings, the principle is:in the furnace body, using titanium material cast or forged bar as the parent material electrode (anode), water-cooled copper crucible as a positive electrode, under vacuum atmosphere, low input voltage (25 ~ 40V) of high current, the poles near thearc, melting titanium material consumable electrode tip, drop into the crucible, the formation of molten pool. In the cooling effect, a layer of shell forming copper cruciblewall and the crucible melt pool, protection against erosion, titanium liquid without pollution. When the weld pool growth crucible to suffici

.