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thin-wall steel sand casting

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Published: 01 December 2008
Fig. 41 Thin-wall sand casting produced from austenitic stainless steel. ne section of the casting required two revisions in wall thickness to bring rejection rate to an acceptable level. Rejections were 50% with 1.52 mm (0.060 in.) wall, 25% with 1.91 mm (0.075 in.) and 5% with 2.29 mm (0.090 in.). More
Image
Published: 01 December 2008
Fig. 4 A thin-wall sand casting produced from austenitic stainless steel. One section of the casting required two revisions in wall thickness to bring rejection rate to an acceptable level. Rejections were 50% with 0.060-in. wall, 25% with 0.075-in., and 5% with 0.090-in. More
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009021
EISBN: 978-1-62708-187-0
... steel sand castings, thin-wall aluminum and magnesium castings, thin-wall permanent mold castings, and thin-wall investment castings, with schematic illustrations. thin-wall investment casting thin-wall permanent mold casting thin-wall steel sand casting thin-wall aluminum casting magnesium...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005299
EISBN: 978-1-62708-187-0
... explains the sand casting and permanent mold casting of steel. The process design and casting of thin sections are also discussed. thin-wall steel castings castability graphite molds induction melting permanent mold castings sand mold castings steels solidification characteristics melting...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009022
EISBN: 978-1-62708-187-0
... of heavier ribs with thin walls induced hot tears and shrinkage at the junctions. Uniformity of wall thickness would have eliminated these defects. Size can determine whether a casting design incorporating uniform walls is practical or impractical. The effect of large areas of uniform wall thickness...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009019
EISBN: 978-1-62708-187-0
... of ribs. The presence of a thin core section between two heavier masses of metal presented a problem in production of the turbine door fitting shown in Fig. 8 . Made from magnesium alloy AZ63, this sand casting, as originally designed, had two isolated walls, each 0.38 in. thick, separated from each...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009023
EISBN: 978-1-62708-187-0
... reduction can also decrease the number of risers required. Still another benefit is the elimination of certain potential casting defects. For example, the steel lever shown in Fig. 15(a) , a sand casting for an aircraft application, was difficult to produce because hot tears developed in the thin wall...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006327
EISBN: 978-1-62708-179-5
... iron and steel, numerous examples have been recently noted in the literature where thin-wall ductile iron (TWDI) castings started again to replace aluminum. The excellent property combinations of TWDI castings, including thin-wall austempered ductile iron (TWADI) and alloyed thin-wall ductile iron (e.g...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009024
EISBN: 978-1-62708-187-0
... in the thickness of a wall to avoid or minimize stress concentration. Figure 16(a) shows a method recommended where the thicker section is less than 50 percent larger than the thin section; Fig. 16(b) shows a method recommended where the thicker section is more than 50 percent larger than the thin section...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0009025
EISBN: 978-1-62708-187-0
... be machined from both the inside and outside surfaces of the T-section. Distortion of a casting can be caused or eliminated by the gating and risering system used in producing the casting. This is demonstrated by the casting shown in Fig. 2 . This thin-wall casting, which was 58 in. long, required...
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
... green sand molds of high accuracy, and chemically bonded molds made on high-quality patterns provide good accuracy and reproducibility for thin-walled castings. Also, recent developments in molding technology have led to increased precision in these processes ( Ref 1 , 3 , 9 ). It is normally...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005244
EISBN: 978-1-62708-187-0
... requirements (note that bank sands show more acidity yet have a greater acid-requirement value): Type of sand pH value Acid requirement Silica 6.9 2 Lake 6.7 4 Bank 6.5 40 Core Boxes Cast iron is the preferred metal for core box equipment. The walls surrounding the core...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005259
EISBN: 978-1-62708-187-0
... and dirt in sand molds, it is desirable to pour at a slow speed of rotation. However, true centrifugal castings having a wall section of 12.7 mm ( 1 2 in.) or less must be poured at spinning speed because the metal in this thin section solidifies quickly. Nomographs are available...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006513
EISBN: 978-1-62708-207-5
... reviews the basic components of mold coatings: refractory fillers, binder, and carrier. Casting defects and suggested corrective actions for permanent mold casting are summarized in a table. The article concludes with a discussion on thin-wall permanent-mold castings. cast aluminum alloys casting...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005260
EISBN: 978-1-62708-187-0
... of three or four mold wall thicknesses to one casting wall thickness is often used, but a mold wall this thin cannot always be used in making thin-wall castings without jeopardizing mold stability. Thin-wall castings are sensitive to temperature changes and will misrun readily. Consistent, relatively high...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005258
EISBN: 978-1-62708-187-0
... in rotation about an axis were extended to liquid metals, and the mathematical theory of centrifugal casting was developed in the early 1920s. Horizontal centrifugal casting was first used mainly to manufacture thin-wall gray iron, ductile iron, and brass tubes. Improvements in equipment and casting...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005265
EISBN: 978-1-62708-187-0
... operations proceed as described for the countergravity low-pressure air process in Fig. 1. Loose Sand Vacuum (LSVAC) Process The LSVAC process ( Fig. 6 ) is used to produce thin-wall automotive components. Exhaust manifolds are produced in stainless steel. The process has been demonstrated...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005251
EISBN: 978-1-62708-187-0
...-process for aluminum casting are compared with other casting methods in Tables 1 and 2 . Although the V-process is primarily suited to the production of large castings in relatively small batches, any shape and size can be produced in a V-process mold. Cast configurations range from thin walls to thick...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006316
EISBN: 978-1-62708-179-5
...-walled castings also can be significantly weakened as a result of the presence of defects associated with inclusions of slag, sand from the mold, undissolved particles of inoculants, or cold shuts. Such defects to a large extent impair the mechanical properties of thin-wall castings due to very strong...
Book Chapter

Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006338
EISBN: 978-1-62708-179-5
... with respect to drawing proportional for casting, mold, and pattern Deformed pattern F 126 Thin casting walls over general area, especially on horizontal surfaces Distorted casting F 200: Casting shape incorrect overall or in certain locations F 210: Pattern incorrect F 211...