• TDK plans to manufacture rare-earth magnets in South China

    TDK will begin to manufacture rare-earth magnets ( a kind of strong neodymium magnets) in south China.

    TDK Corp. said it will establish a joint venture in China’s southern Guangdong province in May to manufacture rare-earth magnets, for which global demand is expected to surge.

    The company said the joint venture, Guangdong TDK Rising Rare Earth High Technology Material Co., will be set up by three companies: TDK, Rising Nonferrous Metals Co., a Guangdong-based resource development company, and Tokai Trade Co., a Tokyo-based trading company.

    TDK will hold a 59-percent share in the $33-million venture while Rising Nonferrous Metals and Tokai Trade will have 37 percent and 4 percent, respectively.

    TDK manufactures various electronic devices for use in automobiles, IT equipment and other applications, as well as various magnets for industrial equipment.

    Japan took another step toward lessening its rare earths dependence today, announcing plans to drastically reduce consumption levels in response to China’s continued market dominance. Of particular concern to the Japanese government is dysprosium — a rare earth used in the production of high-powered magnets. China, which accounts for about 95 percent of the world’s rare earth supply, has been tightening export controls on the metal in recent months, sending global prices skyward. With its domestic supplies dwindling, Japan has now committed to reducing its dysprosium consumption by 30 percent over the next few years, as part of a $65 million initiative. Much of that money will presumably go toward helping manufacturers develop alternative production and recycling methods, as some already have. Toyota, for instance, has found a way to produce hybrid and electric vehicles without using dysprosium, while Mitsubishi, Panasonic and TDK are currently looking at ways to extract the metal from old air conditioners. If effective, the government’s program would reduce domestic consumption by between 200 and 400 tonnes per year.

  • 20pcs Disc rare earth magnet Ø 6 mm x 1.5 mm

    20pcs Strong Disc Neodymium rare earth magnet N45 Ø 6 mm x 1.5 mm

    20pcs Disc rare earth magnet Ø 6 mm x 1.5 mm

    20pcs Disc rare earth magnet Ø 6 mm x 1.5 mm

    These magets are strong enough for craft or home diy work like fridge magnets.
    The specification :

    Material NdFeB
    Shape Disc
    Magnetization Axial
    Diameter 6 mm
    Height 1.5 mm
    Tolerance +/- 0,1 mm
    Coating Nickel-plated (Ni-Cu-Ni)
    Property N45
    Strength approx. 600g
    Max. working temperature 80°C
    Weight 0.31 g x 20

    Buy rare earth magnets now on supramagnets.com

    20pcs Strong Disc Neodymium rare earth magnet N45 Ø 6 mm x 1.5 mm only $3.60 + Free Shipping

  • Tiny but strong – Disc Neodymium Magnets N48 Rare Earth

    It’s tiny,  but It’s Strong !

    A range of small neodymium magnets which are ideal for use in model and craft work. These magnets are often used in specialist jewellery applications as well as art projects. Parts and accessories of various models can be attached, removed and repositioned with ease by introducing a pair of attracting tiny magnets.

    Strong Neodymium N48 Disc Rare Earth Magnets 3mm x 1 mm

    Strong Neodymium N48 Disc Rare Earth Magnets

    Strong Neodymium N48 Disc Rare Earth Magnets

    Each magnet can support a steel weight of up to 0.21kg vertically from the magnetic face when in flush contact with a mild steel surface of equal thickness to the magnet. Each magnet can also support up to 0.042kgs in a shear position before beginning to slide down a steel surface under the same conditions.

     

    100 x Strong Neodymium N48 Disc Rare Earth Magnets 3mm x 1 mm for $2.99 + free shipping

  • What is the history of permanent magnets in east

    Man-shaped compass mounted on a chariot

    Man-shaped compass mounted on a chariot

    The first reported application of naturally occurring permanent magnet material is in the Chinese chronicles. It has been reported 2 that the best prepared caravans that crossed the Gobi desert, from the minarets of the kingdoms of the Kushans to the imperial pagodas on the banks of the Yangtze, contained a white camel. In a clay pot full of water, protected by a carved wooden box mounted between the humps of the albino beast, floated a cork containing a piece of magnetized iron. The edges of the pot were painted in four colors: red for south, black for north, green for east and white for west. This primitive compass enabled the caravaner to navigate across the sands. In the Chinese chronicles there are also descriptions of magnetic gates, which restricted the access of armed ill wishers, and magnetic roadways made possible by the magic stone chu-shih. These stones, simply magnetic iron ore, were also known as ‘loving stones’ because their attraction for pieces of iron was similar to the love parents have for their children.

    One Chinese legend relates that Emperor Huang-Ti, nearly 5000 years ago, had a chariot made on which was mounted a small man with an outstretched arm. This arm, Figure 1, always pointed South, so that Huang-Ti’s armies were able to attack their enemies from the rear in a fog and defeat them.

    Chinese spoon compass

    Chinese spoon compass

     

    The stories of camel and chariot mounted compasses may be apocryphal, but Chinese encyclopedias state that magnetic needles were used as compasses on ships in 400 BC, and there exists a 1000 year old Chinese compass resembling a traditional painted spoon, see Figure 2.

    Notwithstanding these early oriental excursions into permanent magnetism, the principal development of permanent magnet materials has been undertaken in Europe.