by clicking the arrows at the side of the page, or by using the toolbar.
by clicking anywhere on the page.
by dragging the page around when zoomed in.
by clicking anywhere on the page when zoomed in.
web sites or send emails by clicking on hyperlinks.
Email this page to a friend
Search this issue
Index - jump to page or section
Archive - view past issues
button in toolbar for more information.
Metal Casting Technologies : September 2007
20 CAST HOUSE TECHNOLOGY NEWS upported by the aluminium industry, the CAST Cooperative Research Centre hosted the 10th Aluminium Cast House Technology, Australasian Conference & Exhibition in Sydney, Australia from Sunday 5th - Wednesday 8th August 2007. In the tradition of the previous conferences, the needs of the primary, secondary, foundry and recycling industries were addressed i.e. broaden the training of cast house technologists, provide a venue for supervisors, managers, materials and technology suppliers and international experts to interact, present new research, industry economics and technological trends and directions and examine strategies to maximize value generated in cast houses. More than 200 delegates attended to include many from 22 countries outside Australia. Sponsored by the Australian Aluminium Council, Alcan Tomago Aluminium, Cometals, Melba Industries, Rio Tinto Aluminium Limited, Hydro Kurri Kurri, Pyrotek, Thermcom Ovens, and Wagstaff, the trade exhibition, of 20 exhibitors included furnace equipment, engineering, alloy hardener, scheduling software, safety equipment, suppliers to the industry. Plant tours were organised to the Hydro Kurri Kurri and Tomago Aluminium primary smelters, and Weston Aluminium secondary smelter in New South Wales. And valuable courses were held on all aspects of DC casting including fundamental heat flow, water boiling theory, defect control, engineering and cost analysis. A FOCUS ON CLIMATE CHANGE The conference was opened by Murray Swyripa General Manager Health Safety and Environment Rio Tinto Aluminium with a talk on the industry's responses to climate change and steps which have resulted in reduced emissions. Other presentations covered general industry trends with particular reference to China and climate change. Michael Ison from the Australian Aluminium Council also highlighted greenhouse issues. Kate Penney from ABARE and Alan Clark of Clark Marron described overall industry trends, growth in Chinese Aluminium production (~12 million tonnes per annum) and consumption. being around a quarter of the western world. EXCELLENT PRESENTATIONS Clark Weaver now retired from Alcan talked about the opportunities and trends in increasing 22kg ingot casting machine productivity, the divergence of slab casting technology including the new fusion clad product VDC casting and lessons learned during a failed development i.e. the Jet pump stirrer. Peter Whiteley spoke on how to maximise productivity from cast houses using benchmarking, Pareto analysis, simple examination of bottlenecks (eg increasing direct chill casting pit turnaround) and correct plant layout and equipment sizing. Wojtek Szcypiorski of Hazelett gave an overview of belt casting technology in the context of the growth in continuous casting generally including twin roll casting (there are now 280 machines operating in China). He discussed process improvements and new product opportunities in automotive. SAFETY AND THE ENVIRONMENT Rasool Ahmed from Bahrain described how chlorine had been eliminated from the plant while still maintaining alkali metal control etc. Brian Gooden of Furnace Engineering gave a very useful overview of control of furnace energy and greenhouse emissions. DIRECT CHILL CASTING Malcolm Couper from Rio Tinto Aluminium Technology presented an analysis of plant scrap data showing the detrimental effect of sodium on hot tearing scrap backed up by CAST fundamental work on hot tearing. Bin Zhang of Wagstaff investigated optimum trough section and pin design for VDC slab casting using mathematical modelling and experiments. 10th Aluminium Cast House Technology Australasian Conference and Exhibition a great success S John Grandfield, Conference Chair www.metals.rala.com.au Attendees at the conference held at Darling Harbour