What are the Properties and Uses of Spherical Tungsten Carbide

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Following the progress in Russia-Ukraine peace talks, the gold price fell more than 1% the next day, hitting its lowest in a month, and palladium prices briefly tumbled by nearly 9%.

"We have seen metal prices going into free fall when the Russia-Ukraine situation is likely to see a major detente, which spurred people's risk preference and optimism that the war could end at a time," said OANDA senior market analyst.

A Russian deputy defense minister says Moscow has decided to sharply curtail its military activities around Kyiv and Chernikov in Ukraine, following talks between Russian and Ukrainian representatives in Istanbul.

Where the prices of metals, natural gas, and commodities like the Tungsten Carbide will go in the future, is still very uncertain.

What is Tungsten Carbide?

As one of the main production raw materials of cemented carbide, the physical and chemical properties of tungsten carbide (WC) powder, such as particle shape, particle size, particle size distribution, oxygen content, carbon content, bulk density, etc., will directly affect the quality of alloy products. Nowadays, with the gradual optimization of the production process of cemented carbide, the market demand for spherical tungsten carbide powder is also increasing.

Tungsten carbide is mainly composed of refractory metal tungsten and non-metallic carbon, and contains a small amount of impurity elements such as Co, Cr, Ti, Ta, Nb, V, Mn, Ni, Mo, O, etc. According to the different particle size, it can be divided into the following grades, WC10 (1.01~1.40um), WC30 (3.01~4.00um), WC50 (5.01~7.00um), WC100 (10.01~14.00um) and so on.

Properties of spherical tungsten carbide

Appearance is black powder, high purity ≥99.9%, sphericity ≥95%, melting point is 2870℃, boiling point is 6000℃, density is 15.63g/cm³, bulk density is greater than 7.0g/cm3, tap density is greater than 7.0. 5g/cm3, the flow performance is less than 10.0s/50g, and has the characteristics of high hardness, low thermal expansion coefficient, high compressive strength, large elastic modulus, and smooth surface. However, due to its high hardness, its processing performance is poor, so it is more suitable for 3D printing.

Production process of spherical tungsten carbide powder

Smelting method: The raw material powder (tungsten powder and carbon black or tungsten powder, carbon black and tungsten carbide) is melted into a liquid state, and droplets will form on the surface under the action of centrifugal rotation method, rotary atomization method or gas atomization method Spherical tungsten carbide.

Modified irregular tungsten carbide: The irregular WC is melted into a liquid state, and then the spherical tungsten carbide powder is made by the plasma spheroidization method or the resistance heat spheroidization method.

Uses of spherical tungsten carbide

Mainly used in the production of cemented carbide. According to different chemical compositions, cemented carbides can be divided into tungsten-cobalt, tungsten-titanium-cobalt and tungsten-titanium-tantalum (niobium) types.

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Recently, the Turkish government announced that the Turkish President has signed a presidential decree to provide incentives for its Black Sea gas field development projects, including tax exemptions and other preferential measures.  

With a fixed investment of 145.1 billion Turkish lira ($10 billion), the project will employ 1,018 people and produce 14 billion standard cubic meters of gas per year, the decree reads. The incentives involved include tariff and VAT exemptions, as well as a range of tax cuts.

In June 2021, Turkish drill ships discovered 135 billion cubic meters of natural gas in the Sakaria field in the Black Sea, bringing Turkey's total gas discoveries in the region to 540 billion cubic meters.  

Turkey imports almost all of its annual gas consumption of about 50 billion cubic meters.  

Except for natural gas, the supply and prices of many other Tungsten Carbide will continue to be influenced by international situations.

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