Tungsten Carbide Boring Blade Geometry Material
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- Category: Tungsten Information
- Published on Tuesday, 22 July 2014 17:42
- Hits: 656
Boring blade can be tungsten carbide, ceramic, cermet, PCD, PCBN cutting tools of different materials. Most tungsten carbide boring blade adopt PVD or CVD coating. For example, PVD TiN coating suitable for machining high-temperature alloys and austenitic stainless steel; widely PVD TiAlN coating applications, most suitable for processing steel , titanium , cast iron and non-ferrous alloys. Both coatings are well coated with the thermal deformation and interrupted cutting ability of anti-carbide substrate. Such tungsten carbide substrate comprising tungsten carbide and about 94% to about 6% cobalt, is the industry code provides the C-3 and C-4 series, the equivalent standard ISO K-10 ~ K-20, M-10 ~ M-25 and P-10 ~ P-20 series.
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Low Center Gravity Tungsten Alloy Golf Clubs
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- Category: Tungsten Information
- Published on Tuesday, 22 July 2014 17:42
- Hits: 626
Popularity of low center gravity tungsten alloy golf clubs is on increase in the golfers. Designing golf clubs with concept of low center of gravity enables hitting the golf ball high into the air as the weight is shifted to the club bottom. Golfer who do not have problem in hitting the golf ball high in the air may not give more importance to the property of low center gravity. But for those who have problem in the hitting golf ball high in the air, lower center of gravity plays major role in improving their game.
Tungsten golf clubs pay more attention towards low center of gravity, as tungsten is considered heavier than steel and tungsten allows golf club to have more weight.
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Why Use Tungsten Alloy Shot in Hunting ?
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- Category: Tungsten Information
- Published on Tuesday, 22 July 2014 17:39
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Tungsten alloy shot is used as the shot of shotgun in hunting. A shotgun is a firearm that is usually designed to be fired from the shoulder. The shot pellets from a shotgun spread upon leaving the barrel, and the power of the burning charge is divided among the pellets, which means that the energy of any one ball of shot is fairly low. In a hunting context, this makes shotguns useful primarily for hunting birds and other small games.
High density, great hardness and resistance to high temperature make tungsten to be one of the most sought-after materials for shotgun pellets in shooting history. The density of tungsten alloy is about 18g/cm3, only gold, platinum, and a few other rare metals have a similar density. So it is denser than any other shot material, including lead, steel or bismuth.
The tungsten will fly farther, hit harder and penetrate deeper. That means more birds, farther out, with fewer cripples. Another unique property of tungsten is that it is non-toxic; it is friendly to the environment, so it is safe for people to handle and work with.
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Tungsten Carbide Boring Bar’s Materials
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- Category: Tungsten Information
- Published on Tuesday, 22 July 2014 17:40
- Hits: 684
Tungsten carbide boring bar is made from tungsten carbide based high density alloy or steel. Alloy steel shank is the most common material, there are some tungsten carbide bar manufacturers using AISI 1144 carbon high speed steel.Regardless of the grade of steel and alloy steel, has the same modulus of elasticity: E = 30 × 106psi. A common misconception is that high hardness or high-quality steel boring bars can reduce the amount of deflection. And the deflection is calculated from the formula can be seen, the deflection of the variable determining the elastic modulus is not hardness.
Tungsten carbide boring bars made of the amount of deflection is very small, because of its much higher elastic modulus than steel and high-density tungsten alloy. Tungsten carbide boring bars typical content produced carbide grade is 90% to 94% cobalt content of 10% to 6%, according to industry coding requirements, such brands belong to C-1 (E = 82 × 106 ~ 84 × 106psi), C-2 (E = 85 × 106 ~ 87 × 106psi) or C-3 (E = 89 × 106psi) series.
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Cutting Force on Tungsten Carbide Boring Tool
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- Category: Tungsten Information
- Published on Tuesday, 22 July 2014 17:38
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Acting on the tungsten carbide boring tool is available for a rotating cutting force dynamo-meter measurements. Measured forces include tangential force, feed force and radial force. Compared with the other two forces, the maximum magnitude of the tangential force.
Tangential force acting on the rake face perpendicular to the blade, and the tungsten carbide boring tool to push down. Note that the tangential force is applied near the blade tip, rather than acting on the central axis of the shank, which is crucial. Tangential force generating a deviation from the center line of the arm (the distance from the center to the holder by force point), thereby forming a moment, it will cause the tungsten carbide boring tool relative to the center-line of torsional deformation occurs.
Feed force is the magnitude of the second largest force, and its role in the direction parallel to the center line of the shank, and therefore does not cause tungsten carbide boring tool deflection. Radial force acting direction perpendicular to the center-line arbor, it will be pushed away from the boring tool machined surface.
Therefore, only the tangential and radial forces will produce tungsten carbide boring tool deflection. It has been used for decades as an empirical algorithm: Feed the size and radial forces were about 25% and 50% tangential force.Today, however, the proportion of people think this relationship is not "optimal algorithm", because the relationship between the various cutting force depends on the particular work-piece material and hardness, cutting conditions and tool nose radius.
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