22 December

Choosing the Right Tungsten Carbide Ball Material for Aggressive Environments

Tungsten carbide is a homogenous mixture of tungsten carbide grains in a binder matrix, with cobalt being the most commonly used binder matrix. The tungsten carbide grains are fused into a solid matrix of cobalt metals under extreme heat and pressure in a process called sintering. There are many different grades of tungsten carbide balls available, making it possible to provide carbide balls that are tailored for most any application. In general, a higher percentage of cobalt will provide a tougher but softer grade while a lower percentage of cobalt will provide a harder but less tough grade.

The hardness of tungsten carbide ball is evidenced by the fact that it is commonly used for tools used to cut steel and other materials, and for armor piercing ammunition. Its abrasion resistance and resistance to shock are both excellent. Tungsten carbide balls are also practically inert so it is able to resist corrosion in nearly any environment. But it should be noted that bases with a pH below 4 have a tendency to attack the binder. Tungsten carbide ball is also one of the most costly ball materials.

Naturally, tungsten carbide balls are used in applications where extreme hardness and wear resistance are required. Tungsten carbide balls are used in heavy machinery applications because of their wear resistance and strength. They are frequently used in the down-hole tool industry for hard banding, which refers to covering the outer surface of the lower portion of a tool with a wear material to enhance its life. Other common applications for tungsten carbide balls include ball screws, bearings, valves, flow meters, pivots, detents and tips.

For example, tungsten carbide balls are often used as tips for ballpoint pens and instruments used to test the hardness of materials.

How Tungsten Carbide Balls are Manufactured?

Summarized Manufacturing Process of Tungsten Carbide Ball:

  • - Pulverizing as formula
  • - Mixing
  • - Satin extrude
  • - Granulating
  • - Pressing
  • - Molding
  • - Vacuum Sintering
  • - Rough Grinding
  • - Fine grinding
  • - Clean
  • - Polish as per the client’s preferences
  • - Inspection
  • - Packing and warehousing

Features of Tungsten Carbide Balls

Tungsten carbide ball feature high hardness, wear resistance, rust free and anti bending. They can directly replace any application of steel ball. Usually, tungsten carbide balls are produced with a grade YG6 and with a hardness of HRA91.0 and density at 14.9g/cm3.

Generic Applications of Tungsten Carbide Balls

ITungsten carbide balls are widely used in many industrial applications such as precision bearings, instruments, meters, pend production, spraying machines, water pumps, machinery accessories, sealing valves, brake pumps, oil deposits, hydrochloric acid laboratory, hardness testers, fishing weights, weighting blocks, ornaments and precision machining.

Tungsten Carbide Ball’s Composition

Tungsten carbide balls are mainly composited with micron class carbide article powders such as WC, TiC with high hardness, and refractory performances, and binders phase like Co, Ni, or Mo, by means of sintering in vacuum or hydrogen reduction furnace. Now the common grades to produce tungsten carbide ball are YG, YN, YT and YW.

At WEISON, we have diversified diameters of tungsten carbide ball molds for a variety of sizes. According to vacuum furnace integrated and isostatic pressing, tungsten carbide ball’s performance has been largely strengthened. Our tungsten carbide balls have excellent quality and come with 100% non-porous. Samples are ready to deliver near you for testing! Don’t delay and order now!

Need any guidance on buying pure tungsten carbide? Get in touch!

Tungsten Carbide Ball
26 November

Why Use Pure Tungsten Carbide over Other Materials

Tungsten Carbide (WC) is an inorganic chemical compound containing equal parts of pure tungsten and carbon atoms. Tungsten carbide in its most basic form is a fine grey powder, but can be processed and formed into shapes for use in industrial machinery, tools, abrasives, as well as in jewelry products.

Tungsten carbide is approximately three times more rigidity than steel, with a Young’s modulus of approximately 550GPa, and is much denser than steel or titanium. It is comparable with corundum in hardness and can only be polished and finished with abrasives of superior hardness such as silicon carbide, cubic boron nitride and diamond amongst others, in the form of powder, wheels and compounds.

Pure Tungsten Carbide is an incredibly versatile material that comes in numerous different types to give varying properties. These varying characteristics are the main reason for its popularity in a range of applications and industries. Tungsten carbide falls between 8.5 and 9.0 on Moh’s hardness scale, making it almost as hard as diamond.

How is the Pure Tungsten Carbide Formed?

In typical conditions, when uncombined, Tungsten is a steel-grey colored metal. Tungsten is only found naturally on earth when combined in chemical compounds. It was first discovered in 1781 and the free element got its reputation for its tough physical properties, particularly the fact that it has the highest melting point of non-alloyed metals and the second highest of all the elements a behind carbon.

Tungsten carbide is formed by reacting carbon and tungsten at temperatures of between 1400 and 20000C. These high temperatures make it ideal to be for mills and cutting tools for industrial use which are able to required heavy use and high temperatures. Tungsten carbide starts off as a fine grey powder, in this form its hard wearing properties makes for an excellent abrasive or this powder can be pressed and formed into a desired shape, for example tools, jewelry and machinery. The rare and extraordinary physical properties retained by Tungsten carbide makes it useful for a variety of applications.

It is enormously strong and wear-resistant, so much so that there are only a scarce number of materials on earth that can cut or scratch tungsten carbide with industrial diamond abrasives being one. It is important to understand that tungsten carbide is available in different grades with varying properties depending on use. There are many different grades of tungsten carbide nowadays available in the market for sale which varies on just a few parameters: grain size, hardness and the degree to which a binder is used.

How Much Strength Does Tungsten Carbide Offer?

Minimum Transverse Rupture Strength (TRS)

The transverse rupture strength of tungsten carbide with cobalt variations is sometimes regarded as an indication of toughness which increases as hardness decreases. A recent study was conducted using a controlled group of tungsten carbide with cobalt samples with consistent TRS values. It demonstrated a different relationship between the TRS and hardness of Tungsten Carbide with Cobalt compounds.

TRS is a measure of the strength of tungsten carbide. Tensile strength is not used on tungsten carbide because it is too brittle and accurate readings cannot be obtained. As a rule of thumb the tensile strength of tungsten carbide is approx. half of the transverse rupture strength. Transverse rupture strength values are determined by the amount of force needed to break standard test pieces under the same test conditions.

Compressive Strength:

Compressive strength is measured by compressing a right cylinder test piece between two tungsten carbide blocks held in line by an outer sleeve assembly. The compressive strength of tungsten carbide is higher than for virtually all metals and alloys. This high compressive strength makes it possible to compress carbon at 1million P.S.I from man-made diamonds.

Impact Strength:

This measures the resistance of tungsten carbide to shock loading by a drop weight impact test. This is a more reliable indication of toughness than TRS readings.

Weison Advanced Materials Co Ltd founded in 1990s and located at one of the Chinese biggest clustering base of tungsten resources – Hunan, is a high-tech enterprise that focuses its diligence on research, development, manufacture, sales and technical service base on tungsten material.

WEISON turning power into precision finishing around tungsten-oriented materials with about twenty years’ expertise and existing experience in powder metallurgy, variety of tungsten-oriented products have been constantly produced and brought into innovative competitive market.

Need any guidance on buying pure tungsten carbide? Get in touch!

Tungsten carbide grit
29 October

Why Tungsten Carbide Grit Is Good for Hardfacing Applications?

Tungsten Carbide Grit is well-known for use in hardfacing applications such as on rotary rock bits and tool joint connections that are used primarily in well drilling where tools must withstand severe abrasion and the stresses of high impacts.

How Tungsten Carbide Grits Are Made?

Manufacturers in the prior art, grits have been made by crushing and screening tungsten carbide compositions. This method produced sharp faceted, irregularly shaped particles with inferior wear resistance. It was recognized in U.S. that the irregularly shaped grit obtained by crushing tungsten carbide compositions were subject to wear problems because of the points and pressures on the rits and the lack of uniformity in the grit particles. This patent teaches a method for preparing tungsten carbide powders whereby spheres, cylinders, ovoids or cubes of tungsten carbide can be obtained for use of a tumbling procedure is mentioned for the production of tungsten carbide grit but no mention is made as to how this procedure is to be carried out.

It has been discovered on the later half that if tungsten carbide powder is combined with a suitable organic binder and agglomerated into particles which are sintered to remove the binder and form tungsten carbide grit, grit with blunt and round particles. These blunt tungsten carbide grits are obtained in good yield with a minimum of unusable fine material. The blunt tungsten carbide grit has superior wear resistance properties as compared to the tungsten carbide grit obtained by crusing tungsten carbide blocks or compacts.

Tungsten Carbide Grit and Hardfacing

The process involved in applying tungsten carbide grit to the surface of hardfacing parts. With hardfacing, the base metal is made tougher and harder through the application of a material (in this case tungsten carbide grit) to its surface. Tungsten carbide grit in fact offers a greater level of protection to surfaces than many or most other traditional hardfacing materials.

Various industry applications require various levels of wear resistance. At WEISON, we offer tungsten carbide grit in various mesh sizes that suit particular applications. By using the right mesh size, you can achieve the desired level of protection regarding both impact and abrasion resistance. Tungsten carbide grit can also be applied to use parts in order to restore their deteriorated and worn-down surfaces.

Learn more at WEISON! You can count on us to meet your tungsten carbide grit needs. Contact us today to discuss your project needs and find out more about our products and services.

Tungsten carbide grit
30 August

Everything You Want to Know about Tungsten Carbide Grit – Here It Is

Tungsten carbide grit is the material applied to components of applications with a high level of abrasion. It’s applied as an overlay through the process called ‘hardfacing’. Through the method of hardfacing in metal working, tougher and harder material is applied to a base metal. Tungsten carbide grit is used above most traditional hardfacing materials because it is harder and is proven to be a more effective protection against wear from abrasion.

Uses of Tungsten Carbide Grit in Work Environments

Tungsten carbide grit can be created to suit individual applications and work environments. One can alter the grit mesh size as well as the wire matrix to achieve the desired balance of protection from abrasion and impact. Through hardfacing, tungsten carbide grit can be applied to a new part in order to enhance its wear resistance further or to a used part for restoring its worn-down surface.

Why Tungsten Carbide Grit?

Tungsten carbide grit is ideal to use for long lasting wear protection in areas of high abrasive wear. It’s used to keep costly parts – bulldozer blades, wood grinding tips, trencher teeth, and bucket teeth – from wearing down quickly. Using tungsten carbide grit on machinery parts that see a lot of wear and tear significantly extends the life of those parts. For this particular reason, tungsten carbide grit is used in many different applications including woodwaste, agriculture, wear parts, plow attachments, and drilling. Tungsten carbide grit also adds an extra layer of protection to costly parts, increasing efficiency and decreasing downtime.

Widespread Applications of Tungsten Carbide Grit

  • • Woodwaste: Tungsten carbide grit can be applied in tub grinders, horizontal grinders, shredders, chippers, debarkers and stump grinders
  • • Agriculture: In this industry, tungsten carbide grits are used in sweeps, rippers and tillers
  • • Wear Parts: uses of tungsten carbide grit often found in fixed hammers, swing hammers, flails, tips, teech & inserts
  • • Plows attachment: also used in blades buckets for backhoes and excavators, loaders, milling attachments, dragline buckets, grapplers, snow removal equipment, trencher teech horizontal directional drilling, graders
  • • Drilling: tungsten carbide grit is highly used during hard banding, tubular, drill pipe, drill collars and pup joints
  • • Long Lifespan.
  • • Great heat conductivity.
  • • Excellent Creep Resistance.

If you are thinking that crushed tungsten carbide grit is useless; you probably don’t know how to use it as they still have high strength, tensile and hardness.

Tungsten Carbide Grit

Crushed Tungsten Carbide Grit for All Those Hard-Facing Applications

The tungsten carbide grit (amalgamation of carbide grit and tungsten carbide) becomes a raw material for offering anti-high temperation, anti-corrosion and wearproof resistance. It has no impurities and gives great welding effects. Crushed tungsten carbide grit not only has good compressive resistance but also has excellent tensile strength.

Incomparable Features of Tungsten Carbide Grit

    Get purest tungsten carbide grit
  • • High purity
  • • Low crushing rate
  • • High hardness
  • • High toughness
  • • Super abrasive resistance
  • • High temperature resistance
  • • Extra layer of protection
  • • Increased efficiency

So, tungsten carbide grit has various applications in crushing, electrolytic and mechanical domains. Why you require it for? Get purest tungsten carbide grit at competitive price only from Weison Advanced Materials Co. Ltd – the leading manufacturer and supplier of pure tungsten carbide grit.

08 March

Properties of Tungsten Heavy Alloy that makes it different than others.

Undoubtedly, Tungsten Heavy Alloy is one of the most demanded alloy in the market that has redefined the market with it’s overwhelming demand and breath taking properties. This is what a manufacturer would want in their raw materials and do everything to have it in their arsenal so that they are having an advantage over their competitors. Heavy Tungsten Alloy are always the talk of the industrial town as the properties possessed by this alloy is very hard to find with any other alloy at the same price band.

Industrial field like aerospace, defense, electronics, aviation and medical industry have taken the demand of tungsten alloys to a whole new level and is increasing on a regular basis.

One of the major application of tungsten alloy can be seen in the heavy industries where the material has to be wear resistant. Production of Tungsten Carbide or Cemented Carbides involves the application of tungsten in it. Tools which are used for cutting, construction and mining have tungsten carbide for superb performance and extra durability in comparison to other alloys.

Some of the Properties that is making tungsten a remarkable alloy are -

  • • High density ranging 17.0-18.8g/cc (90-98W) with the components of W-Ni-Cu, W-Ni-Fe Or W-Ni-Cu-Fe and etc.
  • • They have high melting points and density that is twice of steel.
  • • 50% heavier than lead.
  • • Excellent ductile material.
  • • High Strength.
  • • Long Lifespan.
  • • Great heat conductivity.
  • • Excellent Creep Resistance.

Prodcuts like Tungsten Alloy Balls, Bars , dart barrel , bucking bar collimator , cylinder , plates and many more are few of the highly demanded products in the field of heavy industry.

15 Feb

Tungsten Price

The price of tungsten carbide raw material keeps rising over the whole 2017. According to the statistics of our China hard alloy business network, the main raw material of tungsten carbide powder has been increased from RMB180/kg to RMB270/kg at the beginning of 2017, and the price has soared by more than 50%Tungsten powder is also all the way up from RMB181/kg at the beginning of 2017, the highest in early September when rose to nearly RMB300/kg, even though slightly down afterwards, but there are still RMB274/kg, by the end of year rose more than 50%. The price of the recycled tungsten carbide powder has risen from about RMB158/kg at the beginning of 2017 to 208 yuan/kg at the end of 2017, up by nearly 35 percent.

As for the price of raw material for hard alloy, it can be described as extremely soar. Because of the push of the metal cobalt by overseas prices and domestic downstream especially new energy vehicles ternary battery demand, cobalt price jumped all the way, so as to drive the cobalt powder price also synchronous strong gains, cobalt powder prices have beenraising from early 2017s 300 yuan/kgup to 650 yuan/kg, yearly increasing percentage more than 110%, it's dumbfounded.

The prices of raw material go up, led to the production costs have risen sharply for those who producing tungsten products, but at the downstream, tungsten finished products have not up too much at price through the year, the production enterprises generally face income drops, even an embarrassing situation of without profit. Tungsten product manufacturers have been unable to bear the cost of rising raw materials, and allbe forced to raise their prices start from the tail of 2017.

At the beginning of 2018, the raw material is constantly go up at price, tungsten powder now is about RMB282/kg. tungsten carbide powder, recycled tungsten powder is raising for no exception. all the downstream of tungsten industry be forced to adjust their the beginning of 2018. Chinese traditional new year is upcoming. lots of heavy orders need to be finished before Chinese spring festival, the consuming of tungsten powder becoming strong, however, tungsten powder is regulated by green environment restriction orientation, more and more small and medium W powder producers are coerced into shut down, to some extent cause to shortage so that stimulate the raising of tungsten price.

30 Jan

The Prolific Use of Tungsten in the Medical Industry

That’s obvious, isn’t it!

The remarkable journey of Tungsten from incandescent lamps to different devices and machines hasn’t received the hype like other metals do. The mismatch has been evident since steel, copper, gold, and other metals became the memorable topics of discussion.

Tungsten became the top choice of usage in the medical industry due to several reasons. Tungsten properties, such as high melting point, high malleability, and corrosion resistance edge over the advantages of other metals. These exceptional properties leverage the choice of Tungsten collimators than any other material made collimators.

In Computed Tomography (CT) machines, the key manufacturing component is Tungsten. While this metal is used for making detector arrays of scanners, the circular radiation components are made using Tungsten collimators. Certainly, the advantages of using Tungsten are aplenty, but we cite only a few:

  • Tungsten collimators help in reducing the extra radiations, which is why it’s one of the safest devices for use on a job site.
  • Since the scattered radiation is reduced due to Tungsten collimators, the quality of radiography shots automatically improves.
  • Lauded as an effective radiation shielding material, Tungsten is easy to handle and operate with.
  • Given its non-sparking nature, it also becomes an ideal choice for industrial usage.
19 Jan

Why Is Tungsten An Effective Shielding Material?

Descriptions offered on certain platforms suggest/mention Tungsten as an “effective shielding material” without much explanation. Those dealing with metallurgical explorations have a rudimentary knowledge about the material, but not a lot of them have ample time for explaining the “effectiveness” of Tungsten in simpler terms. Nevertheless, we are here to offer a lucid account about the same.

The chemical element Tungsten with an atomic number of 74 is a lesser discussed material. It has an atomic mass of 183 grams per mole and has a high melting point (as close as 3400 Degrees Celsius). Before CFLs and LEDs made an entry into our daily lives, the regular households had the incandescent light bulbs for illumination. These bulbs had the Tungsten filament in it.

Given its high tensile strength and highly malleable properties, it became a top choice for real-world applications, whether it is in the aerospace industry or in the medical industry. It can withstand high temperatures, making it a major preference for X-Ray production requirements. Tungsten’s efficacy in terms of resisting high temperatures without pitting or bubbling justifies its role as an effective shielding material. Moreover, it’s an effective heat dissipating metal; one of the best alternatives available in the marketplaces.

24 apr

Powder Metallurgy – The Rapidly Evolving Technology

Who knew this would be so popular in the industry?
The powder metallurgy has evolved and the manufacturers take this into cognizance for producing high-quality products. It uses a variety of methods for compaction, which includes extruding, slip casting, centrifugal casting, gravity casting, and more.
Though the advantages come in various aspects of using powder metallurgy, the chief ones include:

  • Reduction in metal removal processes, increasing yield percentage.
  • Higher production, robust quality, and comparatively lower cost.
  • Innovative material-making possibilities.
  • Near net-shape dimensional control and shape complexity.

Though this metal-forming process existed for more than a century, it has triggered a revolution now. The cited advantages in the above highlight why it’s beneficial in various ways for different applications.
Powder Metallurgy – Green Technology
Indeed, this technology has been recognized as “Green Technology” because it asserts sustainability of materials and ideal positioning of products. WEISON Advanced Materials Co. Ltd. – A high-tech enterprise with 20 years of expertise in manufacturing tungsten-oriented product utilizes this world famous metallurgy technique for its customers in different industries, whether it is medical, aerospace, or electronics. We cater to customer’s specific requirements and ensure quality production of tungsten products.

The Rank Of Tungsten Products In Consumer's Market.

The supply of primary Tungsten products is mainly in China. Though production in Asia has grown significantly, the accounting percentage is low. In terms of consumption, China still dominates the market, followed by the European Union, USA, and Japan. The areas outside these countries account less than 10% of total consumption.

The major application for Tungsten is in the production of Tungsten Carbide or Cemented Carbides. Since these are wear-resistant materials and have intensive applications in the heavy industry, the popularity remains high. Products like cutting tools, construction and mining tools, etc. have Tungsten Carbide for durability and performance.

In other industries, such as aerospace, aviation, electronics, defense, and medical industry, the demand for Tungsten-oriented products has rapidly increased. Though there a global economic slowdown in 2008/09 that had adversely affected the markets, the current situation has only led to increasing manufacturing output.

WEISON Advanced Materials Co. Ltd. understands the global demand of Tungsten-based products, for both light and heavy applications. With a state-of-the-art manufacturing unit and innovative processing techniques, we produce cutting edge solutions for all customers. Our dedicated R&D team, engineers, and remaining staff strive for delivering accurate products and services to customers.