The definition and Type of Fusion Welding
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- Category: Tungsten Information
- Published on Monday, 13 May 2013 15:18
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Fusion welding is a generic term for welding processes that rely upon melting to join materials of similar compositions and melting points.Due to the high-temperature phase transitions inherent to these processes, a heat-affected zone is created in the material(although some techniques, like beam welding, often minimize this effect by introducing comparatively little heat into the workpiece).
Contrast with solid-state welding which does not involve melting of materials.
Types of fusion welding include:
Arc welding
Oxy-fuel welding
Electric resistance welding
Laser beam welding
Electron beam welding
Thermite welding
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Properties of Military Tungsten Alloy
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- Category: Tungsten Information
- Published on Monday, 13 May 2013 14:36
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Tungsten heavy alloys are consisted of W-Ni- Fe or W-Ni- Cu or even W-Ni-Cu-Fe, some tungsten alloy is added Co.Mo.Cr and so on.The most important property for tungsten alloy cube is that small volume with high density, which means it could be applied in some fields need the little but heavy parts, especially for military defense, projectiles it play very important role. Heavy-metal tungsten alloys were identified as likely replacements, but these materials were not tested early in the munitions development process for adverse health effects as embedded fragments.Main Application of tungsten alloy: For making rotors of dynamic inertial materials, the stabilizers of aircraft wings, shielding materials for radioactive materials, containers in hospitals and for radioactive isotope (Cobalt 60), and for material of armor piercing bullets and moulds or the military use, etc.
The military tungsten alloy block part adopts the technology of metal injection molding which near net shape technology and the processing methods compared with conventional superiority is a manufacturing quality precision component. Directly manufacturing small sized part about 0.1g to 200g with complicated geometric shapes, compared to investment casting and powder metallurgy, the metal injection molding parts’ tolerance can be held to +/-0.1~0.5%, having high relative density 95 percent to 99 percent and more consistent microstructure and higher mechanical property. Without or only minute quantity of machine work needed, material use rate as high as 97%, part dimension being of small manufacture tolerance, and repeatability, adjustable material composition, fine parts surface smoothness, improvable strength and wearing resistance by heat treatment.
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Reasons for Choosing Tungsten Heavy Alloy as Counterweight
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- Category: Tungsten Information
- Published on Monday, 13 May 2013 14:01
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Tungsten heavy alloy (WHA) balance weight of racing car is now becoming the most popular material for ballast, due to its main advantages as follows:
Highest density
Adding WHA balance weight into the whole framework of a racing car is helpful to optimize the performance of the racing car during the racing progress, which contributes to the better control of the car's movement.
High tensile strength and good creep resistance
Tungsten has high tensile strength and good creep resistance with a high mass/size ratio, so it will be the ideal to work in a restricted space. Its high density also gives enhanced sensitivity by increasing the control of load distribution.
Machined Easily
WHA is also easily machineable which gives designers greater flexibility in deciding on the final shape of components and offer designers several advantages over conventional balance materials e.g. lead or steel.
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Tungsten Alloy as Balance Weight in Aerospace Industry
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- Category: Tungsten Information
- Published on Monday, 13 May 2013 14:24
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Tungsten alloys enable the physical size of components to be reduced, offering greater aircraft balance/ballast weight distribution. Machineable high-density tungsten alloys offer unmatched stabilization properties. These anti-vibration metals provide vibration dampening capabilities, making them the perfect choice for such applications as helicopter blades, aircraft ballast weights, missile components, and more.With high-density materials, aircraft balance weight can be achieved in tight spaces.
Tight tolerances, precision manufacturing and consistent quality are essential on every part.
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Introduction of Tungsten Alloy Ball
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- Category: Tungsten Information
- Published on Monday, 13 May 2013 12:02
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Tungsten alloy ball is small in volume but very dense, which means the product can be used in various fields requiring small but heavy parts, such as the counterweights for golf club, fishing weights, counterweights for military applications, projectiles in the missile weapons, armor piercing ammunition, hunting pellets, prefabricated fragments, the missile weapons, armor piercing ammunition; counterweights for oil logging; also some fields concerning with precision industry, such as mobile phone vibrator, clock cube, self-winding watches, anti-vibration toll holders, flywheel weights, etc. Heavy tungsten alloy balls or tungsten weight is widely used in weight or balance industrial, and in military.
Tungsten alloy ball is in small volume with high density, which means it could be used in some fields need the little but heavy parts, such as the counterweights of golf club, Pinewood Derby car, fishing weights, Medical Instruments, hunting gun’s bullets’ balls; ballast for motorboat, sailboat, submarine; counterweights for military defense, projectiles in the missile weapons, armor piercing ammunition, hunting equipment, prefabricated fragments; counterweights for oil logging; also some fields concerning with precision instrument and shielding material.
Tungsten alloy ball provides a safer, non-toxic and environmentally friendly alternative to lead. Their higher density enables them to hold their shape better, even under extreme conditions.
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