59th Technical Conference & Expo Program
WEDNESDAY, OCT. 10 8 - 8:05 a.m.
.........................................INTRODUCTION
8:05 - 8:40 a.m. .......................................... Paper No. 19 Cliff Fischer, Wisconsin Precision Casting Corp. So How Did it Work? This paper will review the experiences of ‘Wisconsin
Precision Casting Corp. in creating a flow manufacturing culture, and the challenges and rewards in maintaining it.
8:40 - 9:25 a.m. .......................................... Paper No. 20 Priyatham Tumurugoti, Missouri Univ. of Science & Tech Strength of Investment Casting Shells-Material and Microstructure Effects The choice of refractory material, binder and additives
affect the properties of investment casting shells. Differ- ent systems of shells are made, according to a design of experiments using differ in chemistry, particle size or particle size distribution commercially available raw ma- terials. The room and high-temperature strength of the shells was measured in “green,” fired and cooled, and hot test conditions. In addition two three-point band test of flat specimens, wedge specimens were tested to evaluate the corner strength. The results were correlated to the variety of factors including material mineralogy, particle size and shell building parameters, in a particular slurry viscosity and processing schedule. To understand shell fracture mechanics, the various shells microstructures were SEM/ EDX analyzed and linked to the strength of the shell.
9:25 - 10:00 a.m. ........................................ Paper No. 21 Kevin Berwick, VA Technology LTD Advanced Foundry Technology: Transforming the Process The flexibility, consistency and output previously avail-
able from robotics systems, are now available to be ap- plied to all other machines within the invesment casting process... for improved quality and productivity, reduced lead times and increased profitability. This paper will pro- vide technical details of how these technologies have been developed in the form of IC-Net, and how these technologies are being successfully applield in the most advanced foundries in the US, Europe and Asia.
10 - 10:20 a.m. .................................................... BREAK
10:20 a.m. - 10:55 a.m. .............................. Paper No. 22 Vincent Lombardo, Omni Finishing
Solutions for Improving Efficiencies & Reducing Ma- terial Costs, While Being Environmentally Responsible
The drive to reduce costs and increase productivity can
be counterintuitive to being environmentally responsible. Market pressures to be “faster, better, cheaper” have led many companies to the principles of lean, where most fo- cus on standardized work and inventory without consider- ing their process stability. This case study relates the suc- cess of a major medical device manufacturer to reduce their costs; first through process stabilization (elimination of variation). This resulted in the lean benefits of reduced inventory, reduced cycle times, lower labor costs and the reduction of a significant waste stream. Included are the details the of the method, implementation and realized savings by replacing air blasting using Aluminum Zirconi- um with an automated wheel blast system utilizing stain- less steel conditioned cut wire. Savings were achieved in blast media usage, utility costs, labor and waste stream.
10:55 a.m. - 11:30 a.m. ............................... Paper No. 23 Scott Young, TeamBastech Inc./Rapid Direction Inc. 3D Printed Patterns – Pros and Cons of the Processes Available Today This presentation will review the options available
today for generating CAD-based patterns for investment casting. Bastech has a rich history of providing patterns to investment casting foundries. Some of these process- es include; voxeljet, quick-cast, 3d printed “real wax,” and more. Comparisons willl be drawn regarding surface fin- ish, burn-out cleanliness, intricate feature production ca- pabilities and associated costs to name a few.
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11:30 a.m. - 12:05 p.m. ............................... Paper No. 24 Norio Chida, Japan High Comm Co. Ltd. Microwave Drying System for Lost Wax Casting Mold Japan High Comm Co., Ltd. has successfully achieved
the industry first practical use of microwave drying system for lost wax casting mold. Others in the investment cast- ing industry have made repeated experiments using mi- crowave ovens without success. This new system, which has been developed by combining established microwave and mold drying technology. Japan High Comm has been developing, manufacturing, and supplying microwave equipment for defrosting, heating, sterilizing, drying, and heating in food industry over a decade. Microwave has an instant effect to dry molds as slurry consistency is ad- justed with certain water fractional rate; fused silica sand (SiO2) and alumina are used for sanding. Establishing a short lead time delivery system also generates a strong and powerful business unit structure, which greatly affects the bottom line.
12:05 - 12:10 p.m. ............................................... CLOSE
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September 2012
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