2013年3月20日星期三

Tungsten Carbide Rod

Tungsten Carbide Rod

Tungsten carbide rods are 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.

The tungsten carbide rods CHINATUNGSTEN ONLINE can manufacture and supply are varied in different sizes as well as tungsten carbide grades. Following is a detailed description of one kind specification of tungsten cabride rod:
Specificaiton: Diameter:1.5 mm x 330mm
Surface Condition: Sintered blank
Chemical Composition: WC :88.5% + Co: 10% + Others: 1.5%
Density: 14.2~14.6 g/cm3
Hardness: HRA91.5 min.
T.R.S.: 3200N/mm2 min.

Tungsten Carbide Cutting Tools

Tungsten Carbide Cutting Tools

CHINATUNGSTEN ONLINE takes pride in offering an extensive and comprehensive range of tungsten carbide cutting tools to our clients in various dimensions as per the client's specifications or drawings. which are widely used in the automobile and engineering industry.

Our tungsten carbide cutting tools are widely know for its sturdiness,excellent working performance, longer functionality and well wear & corrosive resistance. These tungsten carbide cutting tools are in high demand in engineering industry and can be availed by our clients at market leading prices.
Characteristics of Tungsten Carbide Cutting Tools

Making use of sophisticated technology in manufacturing process has made these cutting tools durable, ant-corrosive and dimensionally accurate. These are highly durable and have excellent cutting edge quality that ensures optimum performance. Further, these are also temperature resistant and provide.
Understanding various requirements or drawings of our clients, we design carbdie cutting tools in different specifications.

Our range of tungsten carbide cutting tools includes carbide inserts, indexable inserts, rotary file, carbide saw blade, carbide end mill, carbide saw, and so on.

Forever Tungsten Ring is Offering Customers 15% Off

A retailer of tungsten carbide rings and wedding bands is offering 15% off during their Easter sale. The coupon code march15 can be added to the shopping cart to receive the special savings on all in stock merchandise only. The company is offering a coupon code in hopes that people will shop early for their summer weddings.

Forever Tungsten Ring is proud to feature the largest online collection of rings and wedding bands for both men and women. The website is home to many unique styles such as the Abalone shell inlay collection and the bestselling wood inlay rings. Forever Tungsten ring is also known for their Celtic ring collection that features the symbolic Claddagh ring, Irish love knot and simple cross rings. The website features rings for both men and women in many widths and finishes making shopping easy. Customers can also customize their rings is they are looking for a more personalized, one of a kind ring.

About Forever Tungsten Ring:
Forever Tungsten Ring? has been a leader in Tungsten Carbide Jewelry since 2005. Forever Tungsten Ring is a member of the Better Business Bureau (BBB) and offers a secure shopping environment for their buyers. Forever Tungsten Ring offers a Lifetime Warranty with all purchases.

Antipa Minerals strikes thrice at Calibre gold-copper prospect

Antipa Minerals has confirmed gold-copper mineralisation at Calibre prospect following the drilling of the third diamond hole at the Citadel project in Western Australia, which returned about 380 metres of unbroken mineralisation.

The Calibre mineralisation, after three diamond drill holes, is now confirmed across 160 metres of strike, down to a vertical depth below surface of over 420 metres and across a horizontal width of 280 metres, and open in all directions.

The second drill hole returned intersections including 75.70 metres at 0.73 grams per tonne gold, 0.42% copper, 1.35 g/t silver and 0.04% tungsten for a gold equivalent grade of 1.59 g/t or a copper equivalent grade of 1.05%.

The third diamond drillhole, which is the first to be completed as part of Phase 1, 2013 Calibre exploration programme, targeted the region beneath the second drillhole of stronger magnetic response which also hosts several downhole electromagnetic (DHEM) conductivity anomalies identified from the DHEM survey.

The three completed drillholes are located at the central but upper extremities of the very large Calibre magnetic anomaly, identified as approximately 800 metres long by 600 metres wide by 350 metres thick, using aeromagnetics.

Interpretation of the available geological and geophysical information and the limited drilling to date suggests that the amount of sulphide mineralisation may increase as drilling moves across the stronger magnetic and DHEM conductivity anomalies identified to date.

Over a geologically comparable 226 metre interval, grades for gold, copper, silver and tungsten increased by factors of 2.4, 3.0, 2.8 and 1.5 respectively from drillholes 12AMD0029 to 12AMD0032.

The continuity of mineralisation over extremely significant thicknesses also confirms the sheer size of the mineralised system. The three drillholes completed to date returned semi-continuous copper-gold-silver±tungsten mineralisation over 280 to 380 metre downhole.

The fourth drillhole in progress, at 111metres, which has intersected significant primary copper and gold (based on bismuth) mineralisation also supports the large scale of mineralisation at Calibre.

The Company’s Phase 1 exploration programme is continuing, with diamond drilling ongoing involving the utilisation of one drill rig to drill up to 2,000m of diamond drilling, which is expected to continue for approximately four to five weeks in total.

Additional geophysical surveys, including a high resolution, deep penetrating fixed-loop surface electromagnetic (FLEM) survey, at Calibre are planned be carried out over the next several weeks.

Antipa's Citadel project covers 1,714 square kilometres of prospective tenements and is located about 100 kilometres north of Newcrest Mining's Telfer gold-copper mine.

The project also includes the gold and copper Magnum deposit, where a maiden resource of 415,000 ounce gold, 641,000 ounce silver and 77,000 tonnes of copper was defined last year.

It has also made priority application for an additional 1,330  square kilometres of exploration licences called the North Telfer project, the granting of which would bring its tenements just 20 kilometres of Newcrest's Telfer project.

The company had a cash balance of $2.28 million at the end of last quarter.

2013年3月12日星期二

Canada Carbon Enters Into Exclusive Distribution

This gives Canada Carbon the exclusive right to market, distribute and sell any and all products in the territory of Canada, Mexico and New York, Pennsylvania, Ohio, Michigan, Illinois, Wisconsin, Massachusetts, Maryland, New Jersey and Indiana.

The term of the Agreement is ten years with an option to renew for two additional ten-year periods. This will give Canada Carbon the exclusive distribution rights to sell a number of very high quality graphite products including; carbon composites, foils and sheets, graphite felts, and a range of specialty compounds. The products are in turn used in a broad cross-section of industrial applications ranging from metallurgy and non-ferrous metal production to chemical industries, gas infiltration systems, reactor and vessel linings, heat exchangers, semi-conductor and photovoltaic applications.

Paul Ogilvie, CEO Canada Carbon commented: "The Agreement helps us further solidify our position as a carbon sciences company. This will bring us closer to graphite customers, and help generate revenue."

Roland Hackl, President CGT Carbon comments: "We choose Canada Carbon because of their commitment to being 100% customer centric and their knowledge of the North American Graphite Industry. We feel even with the best quality products in the world, our partners must have relationships and the ability to understand the customers and their needs."

Canada Carbon is committed to developing and expanding its role as a vertically integrated supplier across the graphite and carbon sector. This will include the exploration and development of its five wholly owned natural graphite properties in Ontario and Quebec; implementation of high-purity production strategies; research and development in leading edge technologies such as graphene refinement; and opportunities to represent and work with global manufacturers such as CGT Carbon.

As Mr. Ogilvie also commented: "The nature of the graphite sector requires an understanding not only of the traditional mine and milling elements, but also critical functional areas such as marketing, research and development, supply chain, and robust information technology systems. The chance to work with CGT will broaden our understanding of the business and provide us with access to CGT global market experience. Our obligation to CGT will be to do all that we can to increase and improve their market access in the regions we have agreed upon". In the weeks ahead Canada Carbon's sales team will be working closely with CGT's engineering group in a training process to understand CGT's products and markets. The Company will continue to provide new information on this program and others as it moves forward.

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Wear and Corrosion Protection Using CVD Tungsten Carbide Coatings
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Wear and Corrosion Protection Using CVD Tungsten Carbide Coatings

Introduction
The life of critical components and tools can be increased by many different hard coatings and surface treatments such as boronizing, nitriding, hard chrome plating, plasma and thermal spray coatings, physical vapor deposition (PVD) and chemical vapor deposition (CVD) coatings. However, each technique has its own disadvantages. This article discusses the innovative CVD tungsten carbide/tungsten coating named as Hardide, Which exhibits exotic properties.
Types of CVD Tungsten Carbide/Tungsten Coatings

CVD tungsten carbide coatings are different from other tungsten carbide coatings as they do not use cobalt or nickel metal matrix binder.
The hardest coating type H comprises pure tungsten carbides, thus demonstrating high hardness but with only 'satisfactory' toughness. The multi-layer coating type M features layers of different hardness. It is possible to modify the overall coating characteristics by changing the ratio between the thickness and properties of individual layer based on specific application requirements. CVD tungsten carbide coating type T is the most widely used coating.
Nano-Structure of CVD Tungsten Carbide Coating Type T

Coating type T is a sophisticated nano-structured material comprising a metallic tungsten matrix with dispersed tungsten carbide nano-particles with a typical size range of 1-10 nm, as shown in Figure 1.
Figure 1. High resolution electron microscopy image of precipitate in CVD coating type T deposited on Cu substrate. The atomic distances (1.49 and 1.76 Å) directly taken from the precipitate region are matched best to the lattice constants of W2C (110- 1.49 Å and 102 - 1.74 Å).

The coating type T demonstrates abrasion resistance up to twelevefold higher than that of hard chrome and improved hardness of more than 1100 Hv. The coating can be formed on titanium, low alloy and some tool steels, stainless steel, and Ni-, Co- and Cu-based alloys. This nano-structured material shown unprecedented impact resistance, crack resistance and toughness by tolerating 3000 microstrain deformations without any deterioration.
CVD Tungsten Carbide Coating Porosity

CVD tungsten carbide coating is devoid of through porosity from a thickness of below 1 µm thanks to its deposition mechanism, as illustrated in Figure 2. The crystallization of the coating takes place from the gas-phase atom-by-atom, and the defects and micro-pores in the coating are filled by the highly mobile reaction products as the coating grows.
Key Characteristics of CVD Tungsten Carbide Coatings

The key characteristics of CVD tungsten carbide coatings are as follows:
Outstanding chemical and corrosion resistance
Free from through porosity, thus effectively protecting mild steel substrate from corrosive media without sealing the coating
Superior resistance to sulfide stress cracking
Provides effective protection against mineral acids such as sulfuric acid and hydrochloric acid
Resists Aqua Regia at room temperature
Superior wear resistance; Wear rate of CVD tungsten carbide coatings is four fold lower when compared to thermal spray WC, 12 fold lower than hard chrome, and 40 fold lower when compared to abrasion resistant steel AR-500
Demonstrates better erosion rate when compared to chrome carbide weld overlay, hard chrome, white iron, cemented carbide, and various other hard materials
Better fatigue resistance and toughness
Deposition from the gas phase enables coating of internal surfaces and intricate shapes.