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patternmaking

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140047
EISBN: 978-1-62708-335-5
... and solid states. It is important to make a distinction between the differences in liquid and solid volume that are of greatest concern to foundry personnel and the contraction that takes place after solidification as a result of solid-state contraction that most concerns die design and patternmaking...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740047
EISBN: 978-1-62708-308-9
.... 1 begins with patternmaking. A pattern is a specially made model of the part to be produced, used for producing molds. Generally, sand is placed around the pattern, and, in the case of clay-bonded sand, rammed to the desired hardness. When chemical binders are used, the mold is chemically hardened...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720293
EISBN: 978-1-62708-305-8
... by the use of computer aided design and manufacturing methods and computer numerical control machines in patternmaking. Better process control and pouring methods can eliminate variations in dimensions due to changes in metal composition or feeding methods. Variations in mold rigidity, caused by inadequate...