rautomead continuous casting technology for precious metals coin production
DESCRIPTION
For over 30 years Rautomead Limited has specialised in the design and manufacture of continuous casting equipment for non-ferrous metals and alloys. There are now more than 300 Rautomead machines in operation in over 45 different countries worldwide. Machines with graphite crucible and resistance heating technology for high purity high quality continuous cast material. Machines may be used as batch casting machines or continuous casting, they may be feed with either liquid metal, alloyed grain or virgin metals depending on production quantity and cast section. A wide range of machine sizes and specifications are available for precious metals processing, including gold and silver based alloys for: jewellery, as sheet, rod and tube electronics industry as lead frame alloys and contact materials dental industry minting industry, as bullion coinage strip Bonding wire rod, 99.999 purity gold Examples of finished final products include: Gold and silver coins & medals Gold bonding wire Jewellery, silver picture frames, silver cutlery Dental alloys Electronic lead frame material Sputtering targets for glass coating Silver flutes Rautomead’s R&D facility at the factory in Dundee (casting equipment, technicians, design and operational experience) is available to companies who wish to commission experimental and research work to develop technology and tooling for the manufacture and processing of new alloys and materials. Rautomead’s partnership with the University of Dundee provides access to sophisticated laboratory equipment as well as support with analytical evaluation and academic contributions to the R&D effortTRANSCRIPT
Continuous Casting Technology for Gold and Silver coin manufacture
n Graphite crucible
n Electric resistance heating
n 20mm - 200mm strip width
n 3mm - 30mm strip thickness
n Billet up to 125mm dia.
RMT 200
RMJ/H 025 with In-Line Shear
Coin images © 2011 Royal Canadian Mint - All Rights Reserved Coin images © 2011 Perth Mint - All Rights Reserved
n Royal Canadian Mint
n Perth Mint, Australia
n Shanghai Mint, China
n Royal Thai Mint
n Central Mint, Taiwan
n Sunshine Minting, USA
n Rand Refinery, South Africa
n Polish State Mint
n Nitrogen gas protection inside furnace
n Long casting die life
n Long crucible life
n PLC control system n Production progammes stored in memory n Accurate and repeatable operation
n High quality continuous cast product
n GOLD n Fine (99.9 or 99.99) n 22 Carat, 18 Carat, 14 Carat
n SILVER n Fine (99.9 or 99.99) n 92.5% 90% 80% 50%
Materials
Equipment features
Customer Reference installations include
RT 650
RMJ / H025RMT 200RT 650
Coin images © Royal Thai Mint, Sunshine Minting Inc., Shanghai Mint – All Rights Reserved
Rautomead Limited, Nobel Road, Wester Gourdie Industrial Estate, Dundee DD2 4UH, Scotland, UK
Tel: +44 (0)1382 622341 Fax: +44 (0)1382 622941 email: [email protected]
www.rautomead.com
June 2011