Wednesday, May 2, 2012

The Presentation of Silver ingot


Silver ingot is the ancient Chinese currency. Cast into ingots of silver. Since the Han Dynasty, the subsequent generation Jieyou casting, but the flow is not widely. Popular, but not national lawful currency of the Ming Dynasty. To clear, beginning as the main currency in circulation. Weight range, “two” as the main unit of weight, it is also known as silver.
Main purpose: used to make photographic materials and electrical equipment. In electroplating, medical equipment, dental use a lot of silver. Silver and its alloys are used for the manufacture of ornaments and currency.
Properties: silver-white metal, soft, plastic good, strong conductivity. Density 10.5g/cm3, melting point 960.8 ° C
With silver ingot price has been steadily climbing in recent years, counterfeiting phenomenon intensified, investors need a clever identification, in particular, beware of the “real fake wood”.
Market silver ingot fraud varied, mainly classified is to reduce the silver fineness and weight of the two. After the breakdown, one with the pewter, the surface was green and black, the collection is still relatively easy to identify; when casting the copper block frozen in the silver ingot internal appearance gilt silver, large and light, the feel is clearly different; irrigation method of lead, in the bottom of the Truesilver dug a small hole, remove the silver poured into the lead after closure welding the hole, careful observation can be found in the hole left traces of seal welding, the latter two need to invest in skilled touch to recognition, or else will have with the precision instruments to identify.

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