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Case Study. Part " A" is in 1018 alloy and made by a method which limits its geometry and production with the added bur- dens of excessive weight and cost. This part was value engi- neered to take advantage of the full capability of the casting process and is produced in 4615 alloy. Parts "B" and " C" are two views of the casting which achieves a 56% reduction of weight and a 60% reduction of cost. The cast part meets all functional requirements and illustrates the need of match- ing design of part with the most economical method for its production.


Tubular shapes - straight or curved , small or large diameter, round or square, and alloys for optimum service requirements.


We believe a review of this pictorial report is of vital importance to you as a potential user of investment castings. Take another look at the photographs -


it


is interesting to note the parts, which are shapes producible by the various metalforming techniques, but actually purchased as invest- ment castings. With benefit of thousands of case histories


to draw from, we make this observation: almost every metal part - on the drawing board or in present use - could be a better and more economical part if it was designed and speci-


a


fied for its functional requirements rather than • to fit the limitations of any preconceived metal- forming process. And, with actual case histories to support


us, we make this claim: parts designed, speci- fied, and bought as investment castings are functional and can be lighter, better looking, more economical, and provide trouble-free pro- duction parts. Our final point: use the know-how of your investment casting supplier as well as the full capability of the investment casting process. We can only indicate a new concept of in- vestment castings. You may learn more about this important concept by permitting the contributing companies of this publication to quote on every metal part you are designing or presently using.


Parts of thin walls and sections in alloys best for structural strength and lightweight.


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