2017年8月14日星期一

Tungsten Carbide Mechanical Seals

Tungsten Carbide Mechanical Seals Picture
Tungsten carbide mechanical seals with excellent properties of high hardness, wear resistance, strength and toughness, high heat-resistant and corrosion-resistant. Even if in the temperature of 500℃, the products will also keep unchanged, and will have very high hardness in 1000℃.

Application

Tungsten carbide was widely used as cutting tools, such as turning, milling, planer, drill, boring and so on. Now the new tungsten carbide cutting tools are equal to several hundred times the carbon steel.

Features

1. Tungsten carbide mechanical seals are the most wear seals.
2. Tungsten is 10 times harder than gold, 5 times than steel tool, 4 times than titanium.
3. As the high hardness, tungsten carbide mechanical seals are able to keep their shape with the longest time.
4. Tungsten carbide mechanical seals are also called "Permanently polished ring".
5. Tungsten carbide mechanical seals will never bend.

If you have any inquires concerning tungsten carbide products, please do not hesitate to e-mail us by : sales@chinatungsten.com.

2017年8月3日星期四

Tungsten Carbide Universal Ball

Universal ball is usually made of carbon steel, galvanized steel, bearing steel, steel and so on. But as it needs higher properties in some environments, tungsten carbide with high wear resistance, high T.R.S., which is the best choice for the universal ball. The general universal ball is suitable for the industries of electronics, metals, machinery, chemicals, food, forest, mining, books, supermarkets and rubber. But the tungsten carbide universal ball is widely used in transmission systems, feed systems, processing systems, processing machinery, packaging machinery and auxiliary equipment.

Tungsten Carbide Universal Ball Picture
As the tungsten carbide universal ball with scroll flexible, the working board on which to run, material boxes and other objects can be very flexible slip, thus greatly reducing the labor intensity, density can be set depending on the universal ball bearing requirements, can choose different bearing capacity of universal ball.

High wear resistance, high T.R.S., preservative, long lifespan, anti-bending, will retain the original characteristics even if used in the harsh conditions environment, can replace all steel ball products.

If you have any inquires concerning tungsten carbide products, please do not hesitate to e-mail us by : sales@chinatungsten.com.

Tungsten Carbide Precision Balls

Tungsten carbide precision balls in grades 3, 5, 10 and 24. The lower the number grade, the higher precision the ball is. Chinatungstn Online can provide quick turnaround on any size order at competitive prices. As a tungsten carbide precision ball manufacturer, we have years of experience that it is excited to share with prospective clients.

Tungsten carbide itself is practically inert and any attack is usually on the cobalt binder. The selection of tungsten carbide solely for corrosion resistance is usually not justified as lower cost materials are available.

Tungsten Carbide Precision Balls Picture
Super precision balls with a diameter tolerance of ±.00001". Surface finish: 1 micro-inch. Specially treated for dimensional stability. For use as tool-room masters, measuring standards etc. Size range: 1 / 16" to 1"; 1mm to 25mm.

Tungsten carbide precision balls are used in a wide variety of applications including bearings, medical equipment, ball screws, valves, testing equipment and a multitude of other applications where diameter, surface finish, and roundness are critical. Tungsten carbide high precision balls inside of a mini snap case along with a Schelle mini decal.

If you have any inquires concerning tungsten carbide products, please do not hesitate to e-mail us by : sales@chinatungsten.com.

2017年7月18日星期二

Tungsten Carbide Rod

Tungsten carbide rod is mostly applied for drill bits, end mills, and reamers with sub-micron grain grade YG10X, for non-ferrous precision cutting and wood cutting with grade YG6X, and for fiberglass reinforced plastics, titanium alloys, hardened steel with ultra-fine grain grade YG8X, etc.

Tungsten carbide rod include the shapes of round, rectangular and square, solid rods and rods with one or more straight or coolants. The grades are mostly fine and super fine grain with high performance.

We supply premium grade tungsten carbide rod from stock in unground, centerless ground and polished form.Recommended Grade for tungsten carbide rod: YG6, YG8, YG6X, YG012, YG013, YG8A etc.

Tungsten Carbide Rod Picture
We are ISO 9001 certified manufacturer of tungsten carbide rod for turning, milling, drilling, grooving and threading applications. We have over 10 years of experience manufacturing cemented tungsten carbide products. Our company's expertise in grade development, manufacturing, and application engineering assure customers the best choice for their unique requirements. Our advanced pressing and shaping systems give us the flexibility to offer numerous grades and sizes of tungsten carbide rods.

Tungsten carbide rod is manufactured as standards with one, two, or three holes, straight or twisted to a 30 or 40 degree helix, or solid with no holes. All rods are available in standard lengths of 310 and 330 mm. Custom lengths available by request.

If you have any inquires concerning tungsten carbide products, please do not hesitate to e-mail us by : sales@chinatungsten.com

Tungsten Carbide Plate

Chinatungsten Online is a special tungsten carbide manufacturer and exporter in mainland of China, it supplies nearly all kinds of products made of tungsten carbide, e.g. tungsten carbide block, tungsten carbide strips, tungsten carbide rods, tungsten carbide seals, tungsten carbide button and so on.

Tungsten carbide plate is widely known as one kind of carbide cutting tools, it's available for different grinding geometric parameters and suitable for both cutting materials and nonmetal materials, also carbide boring bars can be applied to conventional,tungsten carbide insert, semi-automatic lathe, automatic lathe and planning machine to work grooves and operate cutting, etc. 

Tungsten Carbide Plate Picture

Advantages of Tungsten Carbide Plate
1. High hardness after quenching and tempering  
2. Excellent wear resistance
3. Excellent hot-work performance
We have many years' experience to supply our clients the mentioned high-quality tungsten carbide block with the most competitive prices. If you are interested in any products or have any questions, please CONTACT US directly.
It is always our principles to offer our best service to any clients at any time.

If you have any inquires concerning tungsten carbide products, please do not hesitate to e-mail us by : sales@chinatungsten.com

2017年7月10日星期一

Tungsten Carbide Chemical Properties

There are two well-characterized compounds of tungsten and carbon, WC and tungsten semicarbide, W2C. Both compounds may be present in coatings and the proportions can depend on the coating method.

At high temperatures tungsten carbide decomposes to tungsten and carbon and this can occur during high-temperature thermal spray, e.g., in high velocity oxygen fuel (HVOF) and high energy plasma (HEP) methods.

Oxidation of tungsten carbide starts at 500–600 °C (932–1,112 °F). It is resistant to acids and is only attacked by hydrofluoric acid/nitric acid (HF/HNO) mixtures above room temperature. It reacts with fluorine gas at room temperature and chlorine above 400 °C (752 °F) and is unreactive to dry H2 up to its melting point. Finely powdered WC oxidizes readily in hydrogen peroxide aqueous solutions. At high temperatures and pressures it reacts with aqueous sodium carbonate forming sodium tungstate, a procedure used for recovery of scrap cemented carbide.
Tungsten Copper Block Picture

If you have interest in tungsten carbide products, please do not hesitate to e-mail us by : sales@chinatungsten.com.

Tungsten Carbide Physical properties

Tungsten carbide has a high melting point at 2,870 °C (5,200 °F), a boiling point of 6,000 °C (10,830 °F) when under a pressure equivalent to 1 standard atmosphere (100 kPa), a thermal conductivity of 110 W·m?1·K?1,and a coefficient of thermal expansion of 5.5 μm·m?1·K?1.

Tungsten Carbide Plate Picture
Tungsten carbide is extremely hard, ranking about 9 on Mohs scale, and with a Vickers number of around 2600.It has a Young's modulus of approximately 530–700 GPa, a bulk modulus of 630–655 GPa, and a shear modulus of 274 GPa. It has an ultimate tensile strength of 344 MPa, an ultimate compression strength of about 2.7 GPa and a Poisson's ratio of 0.31.

The speed of a longitudinal wave (the speed of sound) through a thin rod of tungsten carbide is 6220 m/s.

Tungsten carbide's low electrical resistivity of about 0.2 μΩ·m is comparable with that of some metals (e.g. vanadium 0.2 μΩ·m).

Tungsten carbide is readily wetted by both molten nickel and cobalt. Investigation of the phase diagram of the W-C-Co system shows that WC and Co form a pseudo binary eutectic. The phase diagram also shows that there are so-called η-carbides with composition (W,Co)
6C that can be formed and the brittleness of these phases makes control of the carbon content in WC-Co hard metals important.

 If you have interest in tungsten carbide products, please do not hesitate to e-mail us by : sales@chinatungsten.com