Use of Solar mirrors to Melt Metal, an efficient metal processing Method

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As manufacturing plants are being under pressure to reduce their energy spending, many countries and companies are trying to make progress in innovating. some researchers from Germany and South Africa have proposed a technique to reduce the emission in metal processing factories. and will use South Africa’s large aluminium processing industry as a test bed.

In addition to powering electricity-generating turbines , the large mirrors can also melt metals thanks to their ability to concentrate solar rays. The process helps reducing  carbon footprint of the metal processing industry.

The preliminary concept is going to be tested first in Germany at the Aerospace Centre’s (DLR) by the Institute of Solar Research in Julich before  launching it in South Africa.

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According to these researchers, solar mirrors would focus sun rays reaching 700°C to a rotary solar kiln which will be able to melt aluminum ore but also recycled aluminum objects. In addition the research team will develop a logistics plan to transport  the molten aluminium from the central solar melting plant to the production facilities where liquid metal will be processed.

“The aim of the project is to develop an energy and cost effective method that can be implemented across a variety of system sizes, depending on the requirements,” said Martina Neises-von Puttkamer, project manager at DLR.

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South Africa is a particularly interesting place to start the project because the country’s metal processing facilities rely mostly on electric energy coming from coal-fired power plants which brought them to become the 15th largest greenhouse gas emitter in the world. Also Metal processing is the country’s largest industry.

source: eandt.theiet.org

Shanghai Metal Corporation is specialized in manufacturing a wide variety of metal products and understand the importance of a green environment and efficient manufacturing. For more information, you can visit the company’s website or contact us for any inquiry.

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Houria // SMC Editor

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Do You Know How The UK Coins Are Made And What Are They Made of?

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The processes involved in producing a coin can be broken down into three different sections: making the blanks, making the dies and striking the coins.

Making the blanks

Depending on the alloy required, the appropriate metals are melted in the necessary proportions in a furnace. The metal is then extracted from the furnace in the form of a continuous strip, which is cut to produce coils weighing up to 2.8 tonnes. The strip is passed through powerful rolling mills to reduce it to the thickness of a coin. Blank discs of metal are then punched from the strip in a blanking press at a rate of up to 10,000 a minute. Rolling metal under great pressure makes it hard so the blanks have to be softened, something which is achieved by heating them in an annealing furnace at up to 950°C.

Making the dies

Once a design has been approved, a plaster model is prepared at several times the diameter of the intended coin. The plaster model is scanned by a ruby-tipped probe which records the design as a digital file on a computer. Guided by this digital file, an engraving machine cuts the design into a piece of steel at the correct size of the coin. Known as a reduction punch, this piece of steel is then used to make the dies which will actually strike the coins.

Striking the coins

For the final stage of the process, the blanks are fed into a coining press containing a pair of dies. Applying a pressure of around 60 tonnes, the dies strike the blanks and turn them into coins at speeds of up to 850 a minute.

= 1 penny coin =

First Issued February 15, 1971

Diameter 20.3mm

Weight 3.56g

Thickness Bronze: 1.52mm. Copper-plated steel: 1.65mm

Composition Bronze (97pc copper, 2.5pc zinc, 0.5pc tin)

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= 2 pence coin =

First Issued February 15, 1971

Diameter 25.9mm

Weight 7.12g

Thickness Bronze: 1.85mm. Copper-plated steel: 2.03mm

Composition Bronze (97pc copper, 2.5pc zinc, 0.5pc tin)

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= 5 pence coin =

First Issued Smaller version in June 1990.

Diameter 18.0mm

Weight 3.25g

Thickness 1.7mm

Composition Cupro-nickel (75pc copper, 25pc nickel)

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= 10 pence coin =

First Issued Smaller version in September 1992.

Diameter (since 1992) 24.5mm

Weight 6.5g

Thickness 1.85mm

Composition Cupro-nickel (75pc copper, 25pc nickel)

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= 20 pence coin =

First Issued June 9, 1982

Diameter 21.4mm

Weight 5g

Thickness 1.7mm

Composition Cupro-nickel (84pc copper, 16c nickel)

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= 50 pence coin =

First Issued Smaller version introduced in September 1997. Diameter (since 1997) 27.3mm

Weight 8.0g

Thickness 1.78mm

Composition Cupro-nickel (75pc copper, 25pc nickel)

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= 1 pound coin =

Issue Date April 21, 1983

Diameter 22.5mm

Weight 9.5g

Thickness 3.15mm

Composition Nickel-Brass (70pc copper, 5.5pc nickel, 24.5pc zinc)

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= 2 pound coin =

First Issued June 15, 1998

Diameter 28.4mm

Weight 12g

Thickness 2.5mm

Composition, Outer Nickel-Brass (76pc copper, 4pc nickel, 20pc zinc). Inner Cupro-nickel (75pc copper, 25pc nickel)

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= 5 pound coin =

First Issued August 4, 1990. Previously crowns had a face value of 25p

Diameter 38.61mm

Weight 28.28g

Thickness 2.89mm

Composition Cupro-nickel (75pc copper, 25pc nickel)

Collector versions have been struck in precious metals

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As an international manufacturer and supplier for copper sheet and bronze sheet, Shanghai Metal Corporation produces slitting, edging, and oscillates winding to fit your specific copper requirements. To find out more, please visit our Website or send your inquiry here. Our English speaking personnel will be more than pleased to help you. Follow us on  LinkedInTwitter, FacebookInstagram and don’t forget to subscribe to our YouTube channel. Or you could try our new mobile app by scanning our QR code.

Sources: Royal Mint, The Telegraph, museumvictoria.com.au

William P.//SMC Editor

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Artificial Mineral Re-Created by Reverse Engineering Tech

How easy can you get hold of precious metals and stones in their natural form? Gold, copper, tantalum, aluminum is surely more commonly seen in varying forms of artifacts such as technological, artistic, auto parts, electric, machinery, etc. In addition to their number of applications, these metals also have great recycling properties, giving life to new devices at any time.

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However, once the precious elements leave their mineral form, there is no way back to it until two artists had a great idea to create an artificial mineral from old metal parts. As part of the project “Revital Cohen and Tuur Van Balen” an artificial mineral was created: H / AlCuTaAu. The project was commissioned for Arbeid van de Dag, De Brakke Grond, Amsterdam.

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The artwork uses precious metals and stones that previously comprised old computers, electric drills, cellphones, and other machinery components recovered from a bankrupt factory. The reverse-engineering work is a result of extensive research and “speaks of the provenance of technological artifacts and the value of labor”, says Cohen and van Balen, the artists behind the art piece. They have a really poetic way of showing the tension and entanglement between technology and nature to create artificial minerals, unnatural animals and poetic machines.

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Cohen and van Balen are well known artists with art pieces such as 75 Watt acquired as a permanent collection by the Museum of Modern Art, MOMA in New York City.

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Shanghai Metal Corporation offers a wide range of metals such as copper and aluminum, widely used in technological, artistic, auto, electric, machinery artifacts. To find out more, please visit our Website, WordPress, LinkedIn , Twitter , Facebook  and Instagram. Or you could try our new mobile app by scanning our QR code. Moreover, we sell directly from Alibaba , EC21 ,Tradekey or directly at sales@shanghaimetal.com.

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Source and pictures: cohenvanbalen.com, thecreatorsproject.vice.com, nextnature.net

Camilla G.//SMC Editor