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scabs

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Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003507
EISBN: 978-1-62708-180-1
... discusses the types of imperfections that can be traced to the original ingot product. These include chemical segregation; ingot pipe, porosity, and centerline shrinkage; high hydrogen content; nonmetallic inclusions; unmelted electrodes and shelf; and cracks, laminations, seams, pits, blisters, and scabs...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006467
EISBN: 978-1-62708-190-0
... of flaws encountered in the inspection of steel bars, including porosity, inclusions, scabs, cracks, seams, and laps. Inspection methods, such as magnetic-particle inspection. liquid penetrant inspection, ultrasonic inspection, and electromagnetic inspection, of steel bars are also described. The article...
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 rough surfaces on the cope surface of the casting Mold drop or sticker A 114 (a) Thin projection parallel to a casting surface, in re-entrant angles Fillet scab A 115 Thin metallic projection located at a re-entrant angle and dividing the angle in two parts Fillet vein A 120...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003508
EISBN: 978-1-62708-180-1
... machining, repair, and fit problems later in the assembly. Proper specification, as opposed to overspecification or underspecification, is the key to the successful application, that is, freedom from failure, of castings. Foundrymen have traditionally used rather unique names, such as rattail, scab...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003303
EISBN: 978-1-62708-176-4
... , The Scientific Papers of Bertram Hopkinson , Cambridge University Press , 1921 , p 423 – 437 15. Meyers M.A. and Aimone C.T. , Dynamic Fracture (Spalling) of Metals , Prog. Mater. Sci. , Vol 28 , 1983 , p 1 – 96 10.1016/0079-6425(83)90003-8 16. Rinehart J.S. , Scabbing...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005241
EISBN: 978-1-62708-187-0
... break away could be washed into the molten metal and end up as a defect within the solidified part being cast. The molten metal could also infiltrate the molding medium at the mold/metal interface, producing a nonhomogeneous scab of solidified metal and molding medium on the part being cast (see...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000607
EISBN: 978-1-62708-181-8
... regions intimately associated with the defects. Fig. 281 ; SEM, 50×. Fig. 282 : Same as Fig. 281 , but at higher magnification. SEM, 250× (J.H. Maker, Associated Spring, Barnes Group, Inc.) Fracture of power spring made of tempered AISI 1074. Initially, a “scab” or some other type of mechanical...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006449
EISBN: 978-1-62708-190-0
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000608
EISBN: 978-1-62708-181-8
.... 543 , but at higher magnification. SEM, 200× (J.H. Maker, Associated Spring, Barnes Group Inc.) Fracture of compression spring after 4.3 million cycles in a laboratory test was caused by a large defect called a “scab.” Failure origin was 45° away from the inner diameter of the spring, the point...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005345
EISBN: 978-1-62708-187-0
... using friction stir welding (FSW) processes. Areas of the castings exhibiting scabs and shrinkage porosity were apparently “healed” using the FSW process. There have also been investigations regarding the effects on mechanical properties and corrosion resistance associated with FSW repair; however, none...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004009
EISBN: 978-1-62708-185-6
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003091
EISBN: 978-1-62708-199-3
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003234
EISBN: 978-1-62708-199-3
... be detected by eddy-current inspection at high speed and at low cost. Some of the discontinuities that are readily detected are seams, laps, cracks, slivers, scabs, pits, slugs, open welds, miswelds, misaligned welds, black and gray oxide weld penetrators, pinholes, hook cracks, and surface cracks...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003174
EISBN: 978-1-62708-199-3
... of the casting cavity, causing expansion and spalling that lead to defects known as scabs or rattails. This can be avoided by filling the mold rapidly. Because steel castings possess substantially more ductility than gray iron, gate and riser removal is usually done using abrasive cut-off wheels...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003234
EISBN: 978-1-62708-199-3
... substantially perpendicular to the axis of the cylinder. Regardless of the limitations, a majority of objectionable discontinuities can be detected by eddy-current inspection at high speed and at low cost. Some of the discontinuities that are readily detected are seams, laps, cracks, slivers, scabs, pits...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006468
EISBN: 978-1-62708-190-0
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003646
EISBN: 978-1-62708-182-5
... G 85, A5 0.05% NaCl 0.35% (NH 4 ) 2 SO 4 N/A 5.0–5.4 (a) 1 Salt fog Ambient >75% 1 h Humidifying tower is bypassed or drained with heat off 2 Dry 35 95 N/A 1 h Scab corrosion creepback GM 9511P 5% NaCl N/A N/A 1 Dry/immersion 60/ambient 140/ambient N/A 1 h/15 min...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006428
EISBN: 978-1-62708-192-4
... may occur not only when the engine is broken in but also during service. Both the rotating blade tip and the stationary casing can undergo damage; the damage can comprise of material loss, from the casing or the blade or both, scabbing or material transfer from blade to casing or vice versa, bearding...
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
... cause a ‘scabbing’ appearance on the finished casting. Air bubbles are cause by drying conditions, inconsistent slurry viscosity and by mishandling during dipping of the pattern assembly. Stucco penetration Stucco penetration occurs when the slurry coat does not coat the pattern with consistency...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006533
EISBN: 978-1-62708-207-5