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narrow groove welding

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Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003509
EISBN: 978-1-62708-180-1
... geometry (included angle or root opening too small) Improper backgouging (narrow or shallow) Unbalanced heat input To prevent cracking in multiple-pass groove or fillet welds: Increase bead size of the first pass by using lower travel speed, a short arc, and an uphill (∼5°) welding mode...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003501
EISBN: 978-1-62708-180-1
... requirements (e.g., magnetic, electrical, electronic, or thermal properties) typically supersede the mechanical property requirements. Other design disciplines include industrial, automotive, welding, mining, aerospace, nuclear, and computer engineering. Each type of engineering discipline requires...
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
... be acceptable in some locations. Moreover, many castings (especially iron and steel castings) generally lend themselves to being weld repaired, with proper attention to the details of weld repair procedures. Imperfections and defects can be removed and a suitable weld deposit substituted to give a finished...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001808
EISBN: 978-1-62708-180-1
... vulnerable point in a dynamically stressed area—typically a stress raiser, which may be mechanical, metallurgical, or sometimes a combination of the two. Mechanical stress raisers include such features as small fillets, sharp corners, grooves, splines, keyways, nicks, and press or shrink fits. Shafts often...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006756
EISBN: 978-1-62708-295-2
... in the failure. Technical skills and tools are required for such identification, but the analyst also needs a mental organizational framework that helps evaluate the significance of observations. Like the basic process of the scientific method, failure analysis is an iterative process of narrowing down...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003521
EISBN: 978-1-62708-180-1
... Dissimilar metal weld stress rupture Stress-corrosion cracking Quality control Maintenance cleaning damage Material imperfections/welding imperfections/discontinuities Source: Ref 3 Comparison between three similar boiler waterwall damage mechanisms Table 3 Comparison between...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001818
EISBN: 978-1-62708-180-1
..., but there was some evidence of fatigue beach marks. Fracture originated at a slag inclusion in the weld metal. In some areas, particularly on the weld metal, the plating material had flaked off the clapper. Vickers microhardness surveys across the weld area revealed very narrow bands of high hardness (400 to 650...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001810
EISBN: 978-1-62708-180-1
..., or inner rings being tilted or out of square. Tilting of the outer ring in its housing causes the ring to become slightly oval, which results in a squeeze across one diameter and a relief across the diameter at right angles to the first. This causes narrowing of the ball path at the opposite sides...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001477
EISBN: 978-1-62708-229-7
... of the main steam drum, which was of welded construction, measuring 25 ft. long × 5 ft. 6 in. dia. with a wall thickness of 2 3 4 in. No disruption of the vessel took place nor was any loud report heard. Water at a temperature of 25°C was employed. The previous hydraulic test took place...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003539
EISBN: 978-1-62708-180-1
.... In this article, the narrower, commonly used definition of fatigue striation is used: a striation is a microscopic groove or furrow that delineates a local fatigue crack front after a single cycle of loading. Figure 32 illustrates the correlation between striations and loading. Determination that particular...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006776
EISBN: 978-1-62708-295-2
... fatigue. The origin site can be located by tracing the centers of curvature of beach marks back to the thread root at the arrow. Source: Ref 4 Fig. 23 Carbon steel shaft broken in rotating-bending fatigue. Fatigue fracture initiated at numerous sites along a sharp snap ring groove; ratchet...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006779
EISBN: 978-1-62708-295-2
... range, Δ S ), and the number of cycles to failure, N . The regions of the curve can be separated into the quasi-static, finite-life, and infinite-life regimes ( Fig. 3 ). Fig. 3 S - N curve for cruciform metal-active-gas-welded joints (structural steel S355, ASTM A572 grade 5). LCF, low-cycle...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001459
EISBN: 978-1-62708-234-1
... cracks may propagate very rapidly. In a previous Report 5 reference was made to the rupture of the crankshaft of a large Diesel engine ; the shaft had been built up by welding and complete rupture occurred after only 35 hours subsequent running, a series of fatigue cracks extending from the thermally...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003544
EISBN: 978-1-62708-180-1
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003562
EISBN: 978-1-62708-180-1
... with a flat and subjected to a tangential force In some investigations ( Ref 15 , 16 ), the amplitude of slip at which damage was detected on steel specimens under a load of 88 N (8.8 kgf) was 0.06 μm (2.4 μin.). A narrow annulus of damage was detected at an amplitude of 0.1 μm (4 μin...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006787
EISBN: 978-1-62708-295-2
...-base superalloy 1040 1905 3 S-816 cobalt-base alloy 980 1795 3 Hastelloy X nickel-base superalloy 1205 2200 3 HX (17Cr-66Ni-bal Fe) 1150 2100 3 (a) Seamless tube. (b) Electric-resistance-welded tube General power plant classifications Table 2 General...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001816
EISBN: 978-1-62708-180-1
... ever causing failure. Figure 2 shows a poorly made weld with incomplete fusion amounting to more than half the tube wall thickness, yet this weld gave more than 27 years of service without failure. Nevertheless, fabrication and repair procedures should be aimed at producing defect-free systems...
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
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
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003522
EISBN: 978-1-62708-180-1
... dimples on the surface of a tensile fracture of a high-strength steel. The small carbide particles where local rupture and void formation initiated are apparent. Fig. 13 Fracture surface where a welded connection failed in a drill pipe connection. (a) General view of part of the fracture surface...