On 14 Oct, I went to Michaels Restauarant in Mountain View where the local Society of Manufacture Engineer Chapter 98, was co-hosting a dinner and talk on centrifugal casting by Johnson Centrifugal, a job shop in Wisconsin.
The night started with meeting members of the ASM and SME. Rather interesting to meet these folks although must have been retired for a very long time. Did finally get to meet the president of the local SME also met someone from BAE Systems who remarkably did not get laid off. Afterwards there was a catered dinner with some very nice food. Got to talk with the other SME members as I haven't been to one of these functions in a long time. Know that I am "in between jobs" there was no excuse not to go.
The presentation was hosted by Dr. Arvin Montes, a Senior R&D Materials Engineer at Johnson Centrifugal Technology in Saukville, WI. He explain in very detail the process of centrifugal casting. Essentially molten metal is poured into spinning forming cylinder, which imparts high g-loads to the liquid metal. The form cools and one has a cylindrical form to machine.
Dr. Montes explain the experimentation of using 6061 and 7075 Aluminum in both centrifugal and traditional casting to determine and compare the properties of each. To make a very long and detailed process short, properties of the aluminum cast with centrifugal method has a 85 to 95% higher tensile and yield strength while have a much more homogeneous structure in both the axial and radial direction.
Some of the products that use this process are CRT scanner head, turrets and housing for high-torque permanent magnet motor.
Overall the night was very informative on this process and met up with some leads in this industry.
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