Production Volumes and Use Pattern
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- Category: Tungsten Information
- Published on Wednesday, 18 September 2013 10:59
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Tungsten carbide is manufactured by direct carburization of tungsten with carbon (Roempp, 2003).Mixtures ot metal and carbon DiaCK or grapmte are tieated ai a iemperarure of 140u - L v-vacuum or under hydrogen (Tulhoff, 2000):vv+c.)WC.When heating a mixture of tungsten and carbon in a car'oon tube or high-frequency furnace to ca.800 0C, cast tungsten carbide is o'otained (Gmelin, 1993), However, most tungsten carbide is so'I"das powders with distinct ranges of grain sizes (Tulhoff, 2000),
Purity and gYain size determine the physical properties and the technical applicability of tungstencarbide. Since milling changes the chemical composition and the shape of the grains, coarsepowders of tungsten carbide can not be milled to obtain fine-~ained powders.
Instead, to obtain theiesired industr'ie'al' product, the particle size of the raw materials is carefully selected. The grain sizeof the product is also irrfluenc'ed by manufacturing parameters like temperature, reaction tiffie,resence of humidity and hydrogen.'Typica/ production lines start from tungsten ore (W, Nb, Fe-oxides), tungsten scrap, scheelite (Ca\V04), tungstic acid (H2W04), and ammonium paratungstate《NH'4)10W'1'2S04" X 5 H:O). Typica/ intermediates are yellow~(W03), blue (appro}cimatciY W4Ullj,a'nd brown tungsten oxide '(W02).
There are several m~t'hods for the manufacturin9 0f the technicaltungsten carbide powders (Tu/hoff, 2000): Tungstic acid powder is reduced to tungsten by hydrogenat 750 0C. The metal particles are carburized at 1400 0C. This method is applied for fine powderswith an average grain size of l llm.
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The use of Tungsten Carbide Rod
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- Category: Tungsten Information
- Published on Tuesday, 17 September 2013 16:28
- Hits: 1972
Tungsten carbide rod is one of Chinatungsten's best products. It is a kind of new technology and new material. Stable in mechanical properties, easy soldering, high wear resistance and high impact resistant are its’ main features. These Tungsten carbide rod are used for the manufacture of cutting tools for the metal, wood, plastic and other industries where hardness and wear corrosion resistance is required.
Chinatungsten Online is a professional manufacturer of specialty tungsten carbide products in China. As a large scale private enterprise, we design tungsten products, including mold and dies, cutting tools, abnormal profile article, etc. Our products, which are made of high quality tungsten carbide, have reliable mechanical and physical property. Our products have been widely used in many aspects of industry and are the best assistant tools for mass production.
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Tungsten Materials Business
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- Category: Tungsten Information
- Published on Tuesday, 17 September 2013 16:15
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Allegheny Technologies Incorporated (NYS: ATI) announced today that it has reached an agreement to sell its tungsten materials business to Kennametal Inc. (NYS: KMT) for $605 million. The transaction, which is subject to customary closing conditions and regulatory approvals, is expected to be completed during the fourth quarter 2013. As a result of this agreement, ATI will report the financial results of the tungsten materials business in discontinued operations pending completion of the transaction.
The tungsten materials business, called ATI Tungsten Materials, is part of ATI's Engineered Products segment. ATI's tungsten materials business has approximately 1,175 employees and produces tungsten powder, tungsten heavy alloys, tungsten carbide materials, and carbide cutting tools. For the year ended December 31, 2012, ATI's tungsten materials business generated total net revenue of $338.6 million, operating profit of $37.2 million, and EBITDA of $45.3 million.
"ATI's growth opportunities are in our High Performance Metals segment businesses, including precision forgings and titanium investment castings, and in our diversified Flat-Rolled Products segment business," said Rich Harshman, ATI Chairman, President and Chief Executive Officer. "The sale of our tungsten materials business to Kennametal, a recognized global leader in tungsten-based wear-resistant products, provides ATI with increased financial flexibility and simplifies capital allocation and deployment.
"This sale strengthens our focus on ATI's core strategic businesses and emphasizes the technical, commercial and operating synergies between our High Performance Metals and Flat-Rolled Products segment businesses.
"We also believe that the acquisition of the tungsten materials business by Kennametal improves the competitive position of this business, resulting in a stronger business for the benefit of customers and employees."
Goldman, Sachs & Co. acted as sole financial advisor to ATI and K&L Gates LLP is ATI's legal counsel in connection with the transaction.
This news release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are based on management's current expectations and include known and unknown risks, uncertainties and other factors, many of which we are unable to predict or control, that may cause our actual results, performance or achievements to materially differ from those expressed or implied in the forward-looking statements. Additional information concerning factors that could cause actual results to differ materially from those projected in the forward-looking statements is contained in our filings with the Securities and Exchange Commission. We assume no duty to update our forward-looking statements.
Building the World's Best Specialty Materials Company™
Allegheny Technologies Incorporated is one of the largest and most diversified specialty metals producers in the world with revenues of approximately $4.6 billion for the twelve months ending June 30, 2013. ATI has approximately 10,900 full-time employees world-wide who use innovative technologies to offer global markets a wide range of specialty metals solutions. Our major markets are aerospace and defense, oil and gas/chemical process industry, electrical energy, medical, automotive, food equipment and appliance, construction and mining, and machine and cutting tools. Our products include titanium and titanium alloys, nickel-based alloys and superalloys, engineered forgings and castings, zirconium, hafnium, and niobium alloys, grain-oriented electrical steel, and stainless and specialty steels.
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Tungsten Carbide Rod
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- Category: Tungsten Information
- Published on Tuesday, 17 September 2013 16:21
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Tungsten carbide (WC) is an inorganic chemical compound containing equal parts of tungsten and carbon atoms. In its most basic form, it is a fine gray powder, but it can be pressed and formed into shapes for use in industrial machinery, tools,abrasives, as well as. Tungsten carbide is approximately three times stiffer than steel, 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 assilicon carbide, cubic boron nitride.
Chinatungsten Online supply premium grade tungsten carbide rod from stock in unground, center-less ground and polished form. What's more, we also supply Tungsten carbide rod according to drawing supplied by customers. Besides, we can offer you high-quality products at a competitive price. We are very please to try our best work for you better. Look forward to your inquiry!
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Carbide is the Material Based on Hard Refractory Metal Compound
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- Category: Tungsten Information
- Published on Tuesday, 17 September 2013 14:09
- Hits: 1947
Carbide is the material based on hard refractory metal compound (hard phase or the ceramic phase) , with metal binder (metal phase), the powder metallurgy method for producing a high hardness, high wear-resistant pieces of , also known as cermet material.
WC - Co cemented carbide is combined of phase of WC and Co binder phase: WC - TiC - Co cemented carbide is the composition of the WC phase, WC - TiC solid solution phase and Co binder phase; And the WC phase, WC - TiC phase belong to the same lysosomal hard phase, they contribute to the wear resistance of cemented carbide, Co phase play the role of binder the hard phase together, contribute to the toughness of cemented carbide, cemented carbide in general owns its contradiction, ie, good toughness, abrasion resistance is poor; good wear resistance, toughness is poor.
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