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Metal Casting Technologies : September 2007
Sylvain Temblay of Pyrotek also presented on application of water and mathematical models on optimum distributor design for slab casting. David Salee of Wagstaff described the new Massflow system for monitoring pressure drops across graphite rings on Airslip tables and controlling the gas flow rate. The system has considerable benefits including reducing graphite ring costs, reducing scrap, safer and reduced maintenance. Ray Richter from Alcoa presented a comprehensive review of surface defects on rolling ingot and their causes. Professor Mary Wells Alcan chair at University of British Columbia presented latest results on water cooling studies. John Herron of Alcoa Australia Rolled Products described how DC pit turnaround time had been reduced from 110 to 75 minutes and also reduced scrap through Kaisen and crew participation and training. PRESENTATIONS BY CSIRO/CAST Three presentations were made by CSIRO/ CASTcrc (development of new ingot casting technology and direct chill casting including new in process instrumentation and mathematical modelling) and two by CSIRO Light Metals Flagship (bath detection and automated hot metal vehicles). THE MADHU NILMANI BEST PAPER AWARD This award was established in 1999 to acknowledge Dr Nilmani's contribution to the industry in establishing the conference. This year honorable mentions were made of the papers by Ian Bainbridge and John Grandfield of CAST CRC on a method of measuring shell temperatures within a DC casting mould and John Herron of Alcoa Australia Rolled Products paper on reducing turnaround time for direct chill casting of rolling slab. The best paper award was given for Dr Malcolm Couper's paper and presentation of Rio Tinto Aluminium Technology's development of a new series of high extrudability alloys supported by CAST CRC's fundamental research on Mg/Si particle precipitation. Rio Tinto Aluminium now produces and exports more than 100,000 tonnes per annum of these alloys worth over $300 million annually. NEXT CASTHOUSE CONFERENCE Christchurch New Zealand and Cairns Australia are under consideration for the 11th conference to be held late 2009. WHO'S WHO OF METALS -- ANNUAL 2007/8 HISTORY OF THE CAST HOUSE TECHNOLOGY CONFERENCE The Aluminium Cast House Technology conference has its roots in workshops on Injection in Metallurgy and Aluminium Melt Refining held in the late 1980s by Dr. Madhu Nilmani of the Department of Chemical Engineering at the University of Melbourne. These early workshops had a big emphasis on melt refining physics as melt quality was a major issue in the industry at that time. A third meeting organised by Dr Nilmani and supported by industry sponsorship was held in 1991 called the Aluminium Cast House Technology conference and a small trade exhibition was also added to the event. Gabor Horvath of Furnace Engineering has been instrumental in building the trade exhibition into a significant part of the success of the conference. The 1993 conference was still held at Melbourne University. The proceedings were published by the TMS. Highlights included papers on the new Wagstaff LHC direct chill casting moulds. Still chaired and organized by Dr Nilmani, the 4th cast house technology conference moved away from the university environment and was very successfully held in Sydney in 1995. Peter Whiteley, ex chief engineer for Alcan International and industry consultant, joined the organising committee as co-chair and Caryn Morgan became involved as the professional conference organizer. Caryn Morgan and Associates continue to organise the conference. In 1997 the Gold Coast venue attracted nearly 200 attendees with a significant proportion coming from off shore. In 1999 Peter Whiteley, took over as conference chair for the 6th conference held in Sydney when Dr Nilmani left the University of Melbourne. Peter's excellent international industry contacts ensured the conference retained and built upon a relevant industry program of speakers and topics. The 7th conference in Hobart, Tasmania in 2001 was almost cancelled because of the collapse of the Australian airline, Ansett. Delegates were flown in on a chartered DC3. Additionally, the conference followed hot on the heels of the September eleven incident. Despite this, many North American delegates made their way over. A popular element of the conference is the inclusion of a plant tour. This has included all Australian smelters. After chairing three conferences, Peter stood down as conference chair after the 8th conference in Brisbane and the organisation of the conference passed from The University of Melbourne to the CRC for Cast Metals Manufacturing now CASTcrc who appointed John Grandfield CAST's Program Manager for Cast House Technology as chair. CAST had been instrumental in organising short courses and workshops around the conference on solidification and safety. Both Peter Whiteley and Dr Nilmani remain members of the organising committee. The 9th conference returned to Melbourne in 2005 and a record 225 attendees came from Australasia, Africa, Europe, North America and Asia. An international technical committee invites speakers and reviews the papers. The proceedings are co-editor by John Taylor and myself with able copy editing assistance from Kerry Blair and Sue Keay of CAST communications. CSIRO publishing print the high quality proceedings. A 2nd edition including last minute papers presented at the conference is published by TMS after the conference. Proceedings are available from CAST and TMS. ● 21