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Metal Casting Technologies : June 2010
METAL Casting Technologies June 2010 15 BRIEFINGS was studied at Precision Manufacturing. The company produces a variety of automotive and machine parts as well as parts for heat, wear and corrosion resistance and exports to Australia, Europe, Japan and the USA (www.pmc-th.com). Comparators for the definition of surface quality of castings Purchasers of castings can specify and assess surface quality and surface texture more accurately and definitively using tactile comparators developed by Castings Technology International (Cti). These provide a practical and functional alternative to photographic representation of casting surfaces in standards such as MSS SP-55-2001. More than 1000 of these sets of comparators are used around the world by multi-national companies and by small enterprises. The durable plastic comparator plates, actual replicas of relevant characteristics of surface finish, have proved to be a more attractive way of reaching agreement with casting suppliers on the required surface quality during contract negotiations. They also provide a basis for acceptance of the castings after order placement. The comparators form the basis of ASTM A802/A802M -- 95 (2006) Standard Practice for Steel Castings, Surface Acceptance Standards, Visual Examination. This standard comprises 31 comparators that define features such as surface roughness, surface inclusions, laps and cold shuts, surface finish after thermal and mechanical dressing, etc. A larger, 48 comparator set applies to ISO 11971:2008 Steel and Iron Castings -- Visual examination of surface quality; BS EN 1370:1997 Founding -- Surface roughness inspection by visual tactile comparators; BS EN 12454:1998 Founding. Visual examination of surface discontinuities. Steel sand castings. (Companies that already have the 'short' ASTM A802 set can upgrade to the larger set by purchasing the 17 additional comparator plates). A third set of 14 comparators, the basis of BS 7900:1998 Specification for examination of the surface texture of precision steel castings, is applicable to the procurement of steel castings manufactured by precision casting techniques such as resin-shell moulding, lost wax, Shaw process, etc. For information regarding prices and availability, please contact Mike Ashton firstname.lastname@example.org CORR-MET+ -- A new corrosion engineering consultancy set up Dr. Barry Gideon has set up CORRMET Ltd a new consulting group based in Rayong on the eastern seaboard of Thailand to focus on metallurgical services, material selection to resist corrosion, development of welding processes, selection of destructive and non-destructive welding programs, and development of ISO9001, ISO14001 & OHSAS 18001 management systems. Dr. Gideon has some 20 years of experience in the oil and gas industry in corrosion and welding engineering of conventional and stainless steels, nickel alloys, etc. As a mature student he completed his Ph.D. in 2009 at RMIT University in Australia under the supervision of Dr. Liam Ward with research entitled "Structural Characterisation, Residual Stress Determination and Degree of Sensitisation of Duplex Stainless Steel Welds". Further information is on www.corr-met.com ■ Mr. Narin Ponpuchi (on the left) of Precision Manufacturing receives a TFA token of thanks from Mr. Seksan Tangkoblab, the current TFA President. Dr. Barry Gideon. SUBSCRIPTION WINNER Congratulations to Pete Smit of Cobble Cast in Queensland, Australia who is the winner of our Special Renewal Offer for June 2010 renewals. Pete will receive a complimentary one year subscription to the Metals magazine.