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castability
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Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006496
EISBN: 978-1-62708-207-5
... Abstract Castability is a complex characteristic that depends on both the intrinsic fluid properties of the molten metal and the manner in which the particular alloy solidifies. This article discusses the practical aspects of solidification important to aluminum foundrymen. The primary focus...
Abstract
Castability is a complex characteristic that depends on both the intrinsic fluid properties of the molten metal and the manner in which the particular alloy solidifies. This article discusses the practical aspects of solidification important to aluminum foundrymen. The primary focus is on the chemical segregation that occurs during freezing, because it determines the castability of the alloy. The article describes the two types of segregation, namely, microsegregation and macrosegregation. It discusses the effect of freezing range on castability of an alloy. The article lists the freezing range of a number of important alloys. It concludes with a discussion on castability of 2xx, 3xx, 4xx, 5xx, and 7xx alloys.
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006326
EISBN: 978-1-62708-179-5
... describes the solidification shrinkage associated with the volume change that occurs during solidification, as well as strength and stiffness of ductile iron castings. It concludes with a discussion on the thermal deformation and residual stress in ductile iron castings. castability castings design...
Abstract
This article discusses some of the factors that are linked directly to the casting design of ductile iron castings. It reviews the choice of molding process, application of draft, and patternmaker's allowance that should be taken into consideration in designing castings. The article describes the solidification shrinkage associated with the volume change that occurs during solidification, as well as strength and stiffness of ductile iron castings. It concludes with a discussion on the thermal deformation and residual stress in ductile iron castings.
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006332
EISBN: 978-1-62708-179-5
... Abstract Castability of alloys is a measure of their ability to be cast to a given shape with a given process without the formation of cracks/tears, pores/shrinkage, and/or other significant casting defects. This article discusses the factors which affect the fluidity of an iron melt: alloy...
Abstract
Castability of alloys is a measure of their ability to be cast to a given shape with a given process without the formation of cracks/tears, pores/shrinkage, and/or other significant casting defects. This article discusses the factors which affect the fluidity of an iron melt: alloy composition and initial melt condition. Besides the basic alloy properties, the effective castability of high-alloy irons can be significantly improved through casting and casting system design. The article describes the product design and processing factors of high-alloy graphitic irons and high-alloy white irons. It explains the heat treatment of high-silicon irons for high-temperature service and concludes with a discussion on machining and finishing of high-alloy iron castings.
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006328
EISBN: 978-1-62708-179-5
... Abstract The morphology of the graphite particles in compacted graphite iron (CGI) is intermediate to the graphite particles found in gray iron or ductile iron. This article discusses the castability and product design of compacted graphite iron. The introduction of modern measurement...
Abstract
The morphology of the graphite particles in compacted graphite iron (CGI) is intermediate to the graphite particles found in gray iron or ductile iron. This article discusses the castability and product design of compacted graphite iron. The introduction of modern measurement and control technologies has made CGI a viable material for high-volume series production. The article describes the production of compacted graphite iron castings and the process control that depends on the production volume of components made from compacted graphite iron. It also discusses the process control for high-volume CGI commonly based on thermal analysis.
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005223
EISBN: 978-1-62708-187-0
... Abstract Castability of alloys is a measure of their ability to be cast to a given shape with a given process without the formation of casting defects. This article describes the factors that limit fluidity as well as experimental methods for measuring fluidity of various alloys. Various tests...
Abstract
Castability of alloys is a measure of their ability to be cast to a given shape with a given process without the formation of casting defects. This article describes the factors that limit fluidity as well as experimental methods for measuring fluidity of various alloys. Various tests designed for measuring the hot tearing tendency in alloys are discussed. The article also discusses the temperature dependence, criteria, and modeling of hot tearing.
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Published: 30 November 2018
Fig. 19 Pumphrey-Moore cracking index based on castability data obtained from Al-Cu-Mg alloys. Source: Ref 19
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Published: 01 January 1993
Fig. 2 Pumphrey-Moore cracking index based on castability data obtained from aluminum-copper-magnesium alloys. Source: Ref 25
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in Design and Fabrication of Induction Coils for Heating Bars, Billets, and Slabs
> Induction Heating and Heat Treatment
Published: 09 June 2014
Fig. 20 General dry-out/heat-up schedule for conventional castable linings in induction heating applications. Courtesy of Allied Mineral Products
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Series: ASM Handbook
Volume: 2B
Publisher: ASM International
Published: 15 June 2019
DOI: 10.31399/asm.hb.v02b.a0006578
EISBN: 978-1-62708-210-5
... Abstract The 391-type hypereutectic aluminum-silicon alloys are hypereutectic alloys designed for applications where excellent wear resistance is needed. They are similar to the 390 family of alloys, except for a low copper content to improve castability and corrosion resistance. This datasheet...
Abstract
The 391-type hypereutectic aluminum-silicon alloys are hypereutectic alloys designed for applications where excellent wear resistance is needed. They are similar to the 390 family of alloys, except for a low copper content to improve castability and corrosion resistance. This datasheet provides information on key alloy metallurgy and processing effects on mechanical properties of separately cast test bars of these alloys.
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005840
EISBN: 978-1-62708-167-2
... the cracking that is associated with thermal cycling. Most fused silica castables have a nominal use temperature of approximately 1200 °C (2200 °F). At temperatures above 1200 °C (2200 °F), the fused silica converts to quartzite and will not withstand thermal cycling without cracking. This results in a maximum...
Abstract
This article is a compilation of best practices, materials, and techniques for the design and manufacture of modern induction forge coils. It presents the basics of induction coil design along with various design considerations, namely, copper tube selection, water flow considerations, and brazing and fabricating the copper coil winding for heating billets, bars, and slabs. The article describes refractory selection criteria and the methods of mounting and securing the induction coil winding, and presents general refractory installation guidelines for induction heating applications. It provides information on curing, form removal, dryout, and coil refractory seasoning. Wear rails that are designed to prevent damage to the coil refractory and subsequent coil winding are also discussed. The article concludes with a discussion on preventive maintenance practices for induction forging coils.
Book Chapter
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003134
EISBN: 978-1-62708-199-3
... describes the major factors considered in alloy selection for casting, including raw material cost, castability, machinability, and the bearing and wear properties. It also provides information on the cost of the final product. alloy selection bearing properties castability conductivity copper...
Abstract
Copper alloy castings are used in applications that require superior corrosion resistance, high thermal or electrical conductivity, good bearing surface qualities, or other special properties. Discussing the types and compositions of copper alloy used for casting, this article describes the major factors considered in alloy selection for casting, including raw material cost, castability, machinability, and the bearing and wear properties. It also provides information on the cost of the final product.
Series: ASM Handbook
Volume: 2B
Publisher: ASM International
Published: 15 June 2019
DOI: 10.31399/asm.hb.v02b.a0006571
EISBN: 978-1-62708-210-5
...-magnesium die-casting alloys mechanical properties; physical properties Alloys 360.0 and A360.0 are hypoeutectic Al-Si-Mg die-casting alloys with restricted copper content ( Table 1 ). They have very good castability and good corrosion resistance, but fair machinability, less generous limitations...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006524
EISBN: 978-1-62708-207-5
... Abstract Aluminum casting alloys are among the most versatile of all common foundry alloys and generally have high castability ratings. This article provides an overview of the common methods of aluminum shape casting. It discusses the designations of aluminum casting alloys categorized...
Abstract
Aluminum casting alloys are among the most versatile of all common foundry alloys and generally have high castability ratings. This article provides an overview of the common methods of aluminum shape casting. It discusses the designations of aluminum casting alloys categorized by the Aluminum Association designation system. The article summarizes the basic composition groupings of aluminum casting alloy and discusses the effects of specific alloying elements and impurities. The characteristics of the important casting processes are summarized and compared in a table. The article presents the advantages and disadvantages of green sand casting, permanent mold casting, semipermanent mold casting, and high-pressure die casting. A discussion on other casting processes, such as investment casting, lost foam, plaster mold casting, pressure casting, centrifugal casting, and semisolid casting, is also included.
Image
in Metallography and Microstructures of Low-Carbon and Coated Steels
> Metallography and Microstructures
Published: 01 December 2004
Fig. 20 Six low-carbon steel sheet specimens, separated by steel spacers, showing (a) damage from mounting in a thermosetting phenolic resin and (b) lack of damage when mounted in a castable epoxy
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in Metallography and Microstructures of Low-Carbon and Coated Steels
> Metallography and Microstructures
Published: 01 December 2004
Fig. 19 A low-carbon steel sheet plated with electroless nickel showing (a) damage to the coating from mounting in a thermosetting phenolic resin and (b) the lack of damage when mounted in a castable epoxy. As-polished. 100×
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Book Chapter
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006329
EISBN: 978-1-62708-179-5
... casting, with particular emphasis on the melting practices, molten metal treatment, and feeding of molten metal into sand molds. It discusses the castability factors, such as fluidity, shrinkage, and resistance, of gray iron. Typical cupola charge compositions and the final analyses for class 30 and class...
Abstract
Foundry practices critical to the production of cast irons include melting, alloying, molten metal treatment, pouring, and the design of feeding systems (gating and risering) to allow proper filling of the casting mold. This article reviews these production stages of iron foundry casting, with particular emphasis on the melting practices, molten metal treatment, and feeding of molten metal into sand molds. It discusses the castability factors, such as fluidity, shrinkage, and resistance, of gray iron. Typical cupola charge compositions and the final analyses for class 30 and class 40 gray iron castings are presented in a table. The article describes the induction melting and arc furnace melting used in gray iron foundries. It also reviews the inoculation methods such as stream inoculation and mold inoculation, of gray iron.
Book Chapter
Series: ASM Handbook
Volume: 2B
Publisher: ASM International
Published: 15 June 2019
DOI: 10.31399/asm.hb.v02b.a0006563
EISBN: 978-1-62708-210-5
... 9.0 34 5.0 17 10 4 52 7.5 34 5.0 25 Source data are in English units; metric values are converted and rounded Alloy 332.0 has many characteristics like 336.0, while offering improved castability and machinability ( Ref 1 ). This alloy retains strength at elevated temperatures...
Image
in Metallography and Microstructures of Low-Carbon and Coated Steels
> Metallography and Microstructures
Published: 01 December 2004
Fig. 21 A zinc-particle polymer coating (Zincrometal) with a top paint layer on a low-carbon steel sheet showing (a) the extent of the top paint layer, using transmitted light through a castable epoxy mount, and (b) the difficulty of seeing the paint layer in a normal brightfield illumination
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Book Chapter
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003786
EISBN: 978-1-62708-177-1
... provides information on the molds and resins used for castable mounts, vacuum treatment of mounts, special mount arrangements, and mount marking and storage. castable mounts cleaning compression molded mounts handling mechanical clamps metallographic polishing mount defects mount marking...
Abstract
Mounting of the specimen is often desirable or necessary for handling and metallographic polishing after the specimen is cut into an appropriate size. This article illustrates the different mechanical clamps used in mounting small specimens. It provides useful information on compression molded mounts, which are molded with thermoplastic and thermosetting resins. The article reviews several resins and their key factors, which help in the selection of the most appropriate mounting method and resin. It also discusses the characteristics of plastic mounting materials. The article provides information on the molds and resins used for castable mounts, vacuum treatment of mounts, special mount arrangements, and mount marking and storage.
Book Chapter
Series: ASM Handbook
Volume: 2B
Publisher: ASM International
Published: 15 June 2019
DOI: 10.31399/asm.hb.v02b.a0006579
EISBN: 978-1-62708-210-5
...-silicon die casting alloys fabrication characteristics mechanical properties physical properties Alloy 413.0 is a eutectic binary Al-Si alloy with excellent castability and very good corrosion resistance. With poor machinability, it does not lend itself to producing a good surface finish...
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