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chilled cast iron

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Image
Published: 01 August 2018
Fig. 17.68 Cross section of a wheel in chilled cast iron. The chilled layer is thinner than that in Fig. 17.62 . To the left (inner portion of the flange), some casting defects can be seen. The wheel has been cast with its axis in the vertical position and the flange in the upper portion More
Image
Published: 01 March 2002
Fig. 4.14 Micrograph of grade S-230 chilled cast iron shot. Unetched. 160× More
Image
Published: 01 August 2018
Fig. 17.53 Chilled cast iron. Mottled region. Partially spheroidized pearlite, cementite, and phosphorus-rich eutectic. The region presenting a dotted feature, to the left, with a straight boundary is the phosphorus eutectic. To the right, a ledeburitic region. The white matrix is cementite More
Image
Published: 01 August 2018
Fig. 17.71 Chilled region close to the surface of a hypereutectic gray cast iron, with a mottled aspect. Some white needles of cementite on a background of ledeburite. Dark regions are areas where graphite precipitation has happened. More
Image
Published: 01 August 2018
Fig. 17.72 Chilled region close to the surface of a hypoeutectic gray cast iron. Elongated cementite (similar to the plate eutectic, see the section “ 17.2 White Cast Irons ” in this chapter) in a ledeburitic matrix. Some remains of dendrites of austenite that transformed to pearlite can More
Image
Published: 01 August 2018
Fig. 17.73 Region close to the chilled surface of a hypoeutectic gray cast iron. Elongated cementite (similar to the plate eutectic; see the section “ 17.2 White Cast Irons ” in this chapter) and ledeburite. Graphite is visible in the center of the image. Etchant: picral. More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230339
EISBN: 978-1-62708-298-3
... Abstract Beryllium’s machining characteristics are similar to those of heat-treated cast aluminum and chilled cast iron. Like the other materials, it can be turned, milled, drilled, bored, sawed, cut, threaded, tapped, and trepanned with good results. This chapter explains how these machining...
Image
Published: 01 August 2018
Fig. 17.62 Appearance of the fracture surface of an old railroad wheel, made from chilled cast iron. It is possible to clearly see the white regions (close to the tread and flange), gray regions (away from the tread, close to the central region), and the intermediate mottled region. More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220583
EISBN: 978-1-62708-259-4
... Abstract This chapter discusses the effect of composition and cooling rate on the microstructure and properties of cast irons and explains how they differ from steel. It describes the conditions under which white, gray, mottled (chilled), and nodular (ductile) cast irons are produced...
Image
Published: 01 August 2018
Fig. 17.113 White cast iron, produced by chilling, and annealed. Graphite is present. More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170107
EISBN: 978-1-62708-297-6
...-chilled areas of casting shall meet minimum hardness or sand cast requirements. Fig. 1 High-chromium iron microstructures. (a) As-cast austenitic-martensitic matrix microstructure. (b) Heat-treated martensitic microstructure. The massive eutectic carbides are the white constituent in both...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2022
DOI: 10.31399/asm.tb.isceg.t59320063
EISBN: 978-1-62708-332-4
... of chaplets and chills in cast iron castings; guidelines for drafts, machine stock, tolerances, and contraction or shrink rule; and guidelines for pattern layouts and nesting are also covered. cast iron chaplets chills core making drafts machine stock manufacturability molding nesting...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2022
DOI: 10.31399/asm.tb.isceg.t59320103
EISBN: 978-1-62708-332-4
... for Austenitic Gray Iron Castings A518/A518M-99(2012) Standard Specification for Corrosion-Resistant High Silicon Iron Castings A532/A532M-10(2014) Standard Specification for Abrasion Resistant Cast Irons A748/A748M-87(2012) Standard Specification for Statically Cast Chilled White Iron-Gray Iron Dual...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2022
DOI: 10.31399/asm.tb.isceg.t59320031
EISBN: 978-1-62708-332-4
... Castings ,” in this book. Casting producers use chill wedges to check the effectiveness of inoculation in order to prevent iron carbides (chilled edges) in the representative casting wall thickness. The width of the chilled section should be much less than that of the representative casting wall...
Image
Published: 01 August 2018
Fig. 17.69 Transverse cross section of a rolling mill roll. The cylinder surface (upper portion of the image) has been chilled. White cast iron region close to the roll surface, gray core, and mottled transition region. Etchant: iodine. More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170100
EISBN: 978-1-62708-297-6
... depth of chill and chill plus mottle. Prevents galvanic embrittlement. Slightly retards FSG and SSG Nickel Alloying element in cast scrap or steel, certain magnesium alloys in ductile iron production. Intentional addition 0.10 Promotes FSG and SSG while slightly increasing the nodule count...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170021
EISBN: 978-1-62708-297-6
... castings might add 0.5 to 1.0% Cr to make heavier castings with the same hardness and strength as the normal castings. However, a foundry producing a base iron with 1.7% Si and 3.1% C for a heavy casting would add 0.5 to 0.8% Si to decrease hardness and chill when pouring this iron in light castings...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140175
EISBN: 978-1-62708-264-8
.... The molten metal is poured into a small sand mold that has a cast iron plate on its bottom. The setup is called a chill-test casting because the plate on the bottom causes solidification to occur rapidly at the bottom where the melt contacts the cast iron. As freezing proceeds upward, the solidification rate...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440207
EISBN: 978-1-62708-262-4
... is the dominant variable. Rapid cooling favors the formation of white cast irons (chilled cast iron), whereas slow cooling favors gray cast irons. Intermediate cooling rates can result in the simultaneous formation of metal carbide and flake graphite (mottled cast irons). Mottled cast irons are simply a mixture...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2022
DOI: 10.31399/asm.tb.isceg.t59320217
EISBN: 978-1-62708-332-4
... . It is made of steel or cast iron. The increased thermal gradient caused by the chill in Fig. 12.22(d) eliminates the shrink porosity seen in Fig. 12.22(b) . Early research by Pellini and Bishop ( Ref 14 ) established that a minimum temperature gradient of at least 0.5° per centimeter length was needed...