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pattern and cluster assembly

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Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005255
EISBN: 978-1-62708-187-0
... Abstract This article reviews the pattern materials used in investment casting. It describes patternmaking process, pattern tooling, and pattern and cluster assembly. The article provides information on melting equipment, casting methods, and the inspection and testing of investment casted...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005254
EISBN: 978-1-62708-187-0
... assembly for the lost foam process. The purposes and application of various lost foam coatings are also provided. The article describes the investment of the foam pattern in sand system. It discusses the advantages of lost foam casting and concludes with information on formation and reductions of folds in...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006508
EISBN: 978-1-62708-207-5
... away from the ceramic mold before pouring, the foam pattern vaporizes during the pouring of molten metal. Fig. 1 Lost foam pattern for cylinder head. (a) Four different sections of the foam pattern before being glued together. (b) Foam cluster with its gating system and the casting after base...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006519
EISBN: 978-1-62708-207-5
... casting and intended to have advantages over both foamed polystyrene and wax ( Ref 6 ). Large patterns for investment casting are set up and processed individually, but small-to-medium ones are assembled into multipattern clusters for economy in processing. Clusters of aircraft turbine blades, for...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002425
EISBN: 978-1-62708-194-8
... consumer product. A product is purchased, transported, assembled, stored, removed for use, initialized, used in different ways in different environments, perhaps modified by the user, periodically cleaned or maintained, and disposed. Different customer use patterns should be captured and communicated to...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005253
EISBN: 978-1-62708-187-0
... shell is produced. This cluster with the wax disposable pattern is then fired in an oven until all the wax is melted out and the ceramic shell is rigid enough to support the introduction of the molten metal. The wax positive shape of the part can also be solid investment cast, but this method is not...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009015
EISBN: 978-1-62708-187-0
... complex internal passages are made possible by gluing together numerous pattern sections and then attaching the final gating system to this positive shape of part to be cast ( Fig. 8 ). After the positive shape of part is assembled into a cluster, the cluster is coated with a thin ceramic slurry, dried...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004147
EISBN: 978-1-62708-184-9
... R. , JOM , 1996 , p 23 118. Busby J.T. , Sowa M.M. , Was G.S. , and Kenik E.A. , The Role of Fine Defect Clusters in Irradiation-Assisted Stress Corrosion Cracking of Proton-Irradiated 304 Stainless Steel , Proc. 21st International Symposium on Effects of Radiation...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006297
EISBN: 978-1-62708-179-5
... aforementioned “more narrow range.” Classification is primarily based on whether the molds and/or the patterns are permanent or nonpermanent. Fig. 1 Classification of molding and casting processes used in cast iron production References 1. Principles of Sand Control , AFS Green Sand...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006457
EISBN: 978-1-62708-190-0
... reflection pattern changes on the CRT and no ringing is seen. For bonded parts having skins of different thickness, inspection should be conducted from the thin skin side. Fig. 20 Ultrasonic inspection techniques. (a) Contact pulse echo with a search unit combining a transmitter and receiver. (b...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003774
EISBN: 978-1-62708-177-1
... microstructure of castings. Films formed in the crucible are usually thick and clustered and may contain entrapped manganese-rich particles. Films are thin and extended when produced by the breaking of the oxide “tube” in pouring or by turbulence in filling the mold ( Fig. 27a ). Oxides also appear as clusters...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006782
EISBN: 978-1-62708-295-2
... microbes is conducted to determine certain topographical patterns that are generally associated with MIC, such as rounded pits under discrete mounds, subsurface cavities under biofilms, and corrosion attack along weld seams. However, while such patterns arouse suspicions of MIC, they do not prove that the...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003538
EISBN: 978-1-62708-180-1
... randomly contain smaller carbide particles, which subsequently nucleate voids. This is referred to as void sheet fracture and results in a characteristic zig-zag pattern of void growth, shown schematically in Fig. 15(b) . Figure 16(a) ( Ref 41 ) shows and example of void sheet formation between MnS...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006775
EISBN: 978-1-62708-295-2
... subsequently nucleate voids. This is referred to as void sheet fracture and results in a characteristic zigzag pattern of void growth, shown schematically in Fig. 15 (b). Figure 16(a) shows an example of void sheet formation between MnS inclusions. Fig. 16 Examples of ductile fracture on shear planes...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000620
EISBN: 978-1-62708-181-8
... platelets that have been bent and cracked. SEM, 1500× Fig. 943 View at another location in the fracture surface in Fig. 938 . Cellular structure shown here and in Fig. 941 is attributed to the microstructure resulting from the freezing patterns and heat treatment of the casting. SEM, 300...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006439
EISBN: 978-1-62708-190-0
... have developed integrated system capabilities. The ability of an automated vision system to recognize well-defined patterns and to determine if these patterns match those stored in the system makes it ideal for the inspection of parts, assemblies, containers, and labels. Two types of inspection can...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001287
EISBN: 978-1-62708-170-2
... 98 10.1116/1.578073 131. Glang R. and Gregor L.V. , Generation of Patterns in Thin Films, Chapter 7 , Handbook of Thin Film Technology , Maissel L.I. and Glang R. , Ed., McGraw-Hill , 1970 132. Hodgkinson I.J. , Vacuum-Deposited Thin Films with...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005846
EISBN: 978-1-62708-167-2
... components Reduction in undesired heating of areas of the workpiece Precise control of the magnetic field and resulting heat pattern Improvement in efficiency of high-frequency power supplying circuitry Reduction of external magnetic fields in close proximity to the coil In most applications...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.9781627081948
EISBN: 978-1-62708-194-8
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005136
EISBN: 978-1-62708-186-3
... straighteners. Larger bars are usually straightened in presses. Fig. 13 Roll straightening of square bars. (a) Setup for single-plane roll straightening. (b) and (c) Stress patterns that result from single-plane and two-plane straightening Bars of low-carbon steel seldom change size in straightening...