titanium foundry Titanium tube is removed by heat treatment

Titanium tube is removed by heat treatment method other substances
When excessive hydrogen content of sunrui titanium foundry , become brittle leaving notched impact toughness and tensile strength of a sharp decline in the general provisions of the hydrogen content of titanium tubes shall not exceed 0.015% . To reduce the amount of hydrogen absorption , parts should be removed prior to heat treatment fingerprints, rolling mill mark , grease and other residue , no vapor heat treatment furnace atmosphere . If the hydrogen content of titanium tube exceeds the allowable value , must be removed by vacuum annealing . Dehydrogenase is generally vacuum annealing at 538-760 ℃, maintained under a pressure lower than 0.066Pa 2-4h.
    When the temperature does not exceed 540 ℃ , the titanium oxide film surface of the tube does not significantly thickened , however, the heat treatment at higher temperature (760 ℃ above ) , the oxidation rate is rapidly increased, sunrui Titanium Artificial Joint and the oxygen expansion inside material to form a diffusion layer - contaminated layers. Oxygen contamination layer has a high ratio leads to brittle parts of the surface cracks and damage. Removing contaminated layers of oxygen with mechanical processing methods ( such as room cut , sandblasted , etc. ) , or pickling, chemical milling and other chemical methods , in the heat treatment , the heating time should be guaranteed under the premise of the heat treatment is shortened as much as possible meteorite , but also in performed in a vacuum furnace or an inert gas (argon , nitrogen, etc. ) furnace . Application of appropriate Xu Min can avoid or reduce contamination titanium Titanium casting tube furnace parts heating in air generated .

titanium foundry Titanium tube is removed by heat treatment

Titanium tube is removed by heat treatment method other substances
When excessive hydrogen content of sunrui titanium foundry , become brittle leaving notched impact toughness and tensile strength of a sharp decline in the general provisions of the hydrogen content of titanium tubes shall not exceed 0.015% . To reduce the amount of hydrogen absorption , parts should be removed prior to heat treatment fingerprints, rolling mill mark , grease and other residue , no vapor heat treatment furnace atmosphere . If the hydrogen content of titanium tube exceeds the allowable value , must be removed by vacuum annealing . Dehydrogenase is generally vacuum annealing at 538-760 ℃, maintained under a pressure lower than 0.066Pa 2-4h.‪#‎Titanium‬ Casting Golf Heads,Titanium Welded Tubes,Titanium bicycle frames#‎Titanium_Graphite_Mold_Castings‬
    When the temperature does not exceed 540 ℃ , the titanium oxide film surface of the tube does not significantly thickened , however, the heat treatment at higher temperature (760 ℃ above ) , the oxidation rate is rapidly increased, sunrui Titanium Artificial Joint and the oxygen expansion inside material to form a diffusion layer - contaminated layers. Oxygen contamination layer has a high ratio leads to brittle parts of the surface cracks and damage. Removing contaminated layers of oxygen with mechanical processing methods ( such as room cut , sandblasted , etc. ) , or pickling, chemical milling and other chemical methods , in the heat treatment , the heating time should be guaranteed under the premise of the heat treatment is shortened as much as possible meteorite , but also in performed in a vacuum furnace or an inert gas (argon , nitrogen, etc. ) furnace . Application of appropriate Xu Min can avoid or reduce contamination titanium Titanium casting tube furnace parts heating in air generated .

Amazing Secrets: Why not see F-20 rivets

                                        After an anti- aircraft J20 appear different from the past , the whole body almost see the rivets, some people said it was because the stealth coating covers the outside , titanium bicycle frame so you do not see the rivets , in fact, this is wrong. F22 is using rivets , close look carefully you can see it. Why not F22 rivets completely covered with a coating to see it? This is because the skin is F22 by a piece of riveting rivets up, rivets can not cover for easy maintenance , in case you can quickly remove the rivets skin pulls off a piece , and can determine with the naked eye whether the fuselage skin cracks.
    So J20 Why not see rivets it? In fact, this and related processing technology , due to the advances in technology, a large piece of titanium alloy ingots J20 using whole body casting , extrusion and then press through a dedicated , increased density , ( the two years prior to the successful development of the machine , once media have reported that this is the aircraft fuselage presses developed specifically for J20 ) , and finally the use of CNC machine tools hollowed out , which is a ** , high-precision CNC machine tools , Titanium Artificial Joint the entire titanium aluminum alloy 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 titanium alloy ingots are then processed , so do not see J20 rivets.
    Such a process 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 titanium alloy frame , 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 lead to serious disintegration of the entire aircraft , light can also cause skin Titanium Golf Club Heads 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 .
    After processing J20 in the fuselage just put on the surface of the fuselage stealth patch, we note the following diagram , J20 stealth patch is pasted a block , a bit like a submarine acoustic rubber blocks. If you later off a piece of stealth patch just paste a new on OK, so the aircraft maintenance is very easy .
    J20 of the integral processing technology is currently the world's first application in aircraft , F35 will still rely on the rivet , not to mention the Russian T50 , 20 years ago, the process is completely , there is no fundamental and J20 comparable. So an advanced aircraft can not just look at the surface , J20 to strategic needs ( to carry large amounts of fuel to increase range and large anti-ship missiles ) and designed long body, such a body if the old conventional processing technology we rely the naked eye does not feel his body proportions , the body is too long , the body is weak at the middle of stress , Titanium Casting Golf Heads where the most easily broken, but after the introduction of new technology completely eliminates this drawback . So just come out when J20 foreign aircraft design experts feel incomprehensible , but once the solution to doubt its processing will become clear.

Production technology of titanium sponge

Na reduction method: four titanium chloride is mainly used for the production of sponge titanium, titanium dioxide and titanium trichloride. Many of its preparation method, mainly in boiling chloride fused salt chlorination furnace, and 3 methods of chloride. Boiling chlorination is the main method of the current production of four titanium chloride (China, Japan, America use), followed by the molten salt chlorination (the CIS countries), and the shaft chloride has been eliminated. Boiling chlorination is generally low in calcium and magnesium content of high grade titanium rich material as raw material, and molten salt chlorination could use the materials containing high contents of calcium and magnesium. Boiling chlorination: boiling chlorination is the use of fine particles of titanium rich material and solid carbonaceous reducing agent (petroleum coke),‪#‎Aerospace_investment_castings‬ at high temperature, chlorine flow under the action of a chlorination reaction of fluidization state, and preparation method of four titanium chloride. This method has accelerated the gas-solid interphase mass transfer and heat transfer process, strengthen the production characteristics. The boiling chloride using raw materials with high titanium slag, rutile, rutile. China's Fushun titanium factory and Zunyi titanium factory new boiling chlorination furnace diameters of Φ 1.4 m and phi 2.4 m, with no sieve chlorination technology unique, Zunyi titanium plant designed daily crude four titanium chloride 70 t. Molten salt chlorination: molten salt chlorination is milled titanium slag and rutile and petroleum coke, suspended in a molten salt (mainly composed of KCl, NaCl, MgCl2 and CaCl2) in the medium, and the chlorine gas, and preparation method of four titanium chloride. Waste electrolyte in general can also use the electrolytic magnesium, under the condition of 973K~1073K filled with chlorine,#‎Titanium_Welded_Tubes‬ the chlorination reaction velocity by the melt properties, composition, different reducing agent, raw material properties, chlorination temperature, chlorine concentration and inlet velocity, melt height, carbon content and other factors. Molten salt best four titanium chloride production in the cis form as shown in table 4. Molten salt chlorination process is developed in the former Soviet Union in twentieth Century 60, method for production of four titanium chloride, the raw material characteristics of this method is applicable not only to the former Soviet Union (titanium slag containing CaO+MgO about 6%), the furnace production capacity of 20 t/m2 ~25 t/m2 four titanium chloride, molten salt section area of 6m2. Large molten salt Nissan four titanium chloride was 120 t~150 T, formerly the rectangular furnace, the furnace for the round, round molten salt chlorination furnace size of Φ 5 m × 8.5 m, inner diameter is 2.76 m, the rectangle is 4.5 m × 3.5 m × 8.5 M. No dead angle circular furnace, furnace body strength increase, 3 years 1 times than the rectangular furnace overhaul, nearly 1 times the service life extension. Molten salt chlorination can use a variety of rich titanium material, in addition to titanium slag containing calcium magnesium, is now widely used by red ilmenite (Fe2O3 3TiO2) Ti slag smelting (TiO2 87%~91%), can also use the rutile.

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.

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.

Application of aerospace titanium castings and research

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.

​titanium foundry Advantages and disadvantages of titanium

Advantages and disadvantages of titanium porcelain teeth and price 
In a wide variety of porcelain titanium foundry teeth, the total is divided into these categories: ordinary porcelain teeth, porcelain teeth titanium, titanium alloy porcelain teeth, all-ceramic porcelain teeth and so on. Which titanium porcelain teeth in between cheap 
Between the metal and precious porcelain teeth porcelain teeth, outstanding cost performance, so get the favor of consumers. 
Advantages titanium porcelain teeth that it reduces the metal damage to the human body, similar to the color of the gum tissue does not produce black ash edge (which is a disadvantage ordinary porcelain teeth). 
Titanium dental standards must meet the criteria to only 6%, but now the market titanium porcelain teeth containing titanium is very low, so titanium ingot price there is not much between the area according to the ordinary porcelain teeth 
Do not. Overall still occupy the interests of all. Because a common charging 400 yuan porcelain teeth dental clinics in Beijing, and a titanium porcelain teeth price is 900 yuan, so the benefits 
Makes titanium porcelain teeth facing an embarrassing situation. 

The four constituent of ion pump and titanium pump

Sputter ion pump mainly comprises an anode, a cathode, a permanent magnet and a pump body four parts.The anode is a honeycomb like structure composed of a plurality of stainless steel cylinder arranged, the cathode is the two parallel of titanium alloy plates , and the anode caught in the middle, three are keeping a certain distance between and connected by a high-voltage insulating ceramics.

  Applying 3~7 kV DC high voltage anode, cathode grounding. Yin and yang plate is sealed inside the titanium pumps body, pump body in external adsorption of oppositely placed two pieces of permanent magnet, magnetic field direction and the vertical plate, the magnetic induction intensity 1000~2000Gs.

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.

titanium pump Heat treatment of titanium and titanium alloys have

Heat treatment of titanium alloys are:
(1) stress relief annealing: titanium pump the aim is to eliminate or reduce the residual stress generated during processing. Prevent chemical erosion and reduce distortion in some corrosive environments.

(2) complete annealing: the purpose is to obtain a good toughness, improved workability, and is conducive to further processing and to improve the dimensional stability of titanium alloy pump the organization.

(3) solution treatment and aging: The purpose is to increase its strength, α β titanium and titanium alloys can not be stable strengthening heat treatment, carried out only in the production of annealing. α + β titanium alloy

The metastable β titanium alloy containing a small amount of gold can be prepared by α-phase solid titanium casting companies solution treatment and aging the alloy is further strengthened.