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seam welding machines

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Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001128
EISBN: 978-1-62708-214-3
...Abstract Abstract Creep crack growth and fracture toughness tests were performed using test material machined from a seam welded ASTM A-155-66 class 1 (2.25Cr-1Mo) steel steam pipe that had been in service for 15 years. The fracture morphology was examined using SEM fractography. Dimpled...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001204
EISBN: 978-1-62708-219-8
... cracked outside of the weld seam closely under the head. Neither one had been particularly deformed before fracture. The composition of the head pieces corresponded approximately to manganese steel (Material No. 1 0845), a weldable construction steel with increased yield point and strength, while...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001669
EISBN: 978-1-62708-229-7
.... For the ongitudinal seam-weld metal specimens, portions of the weld HAZ were contained outside the machined gage section. The specimens were oriented circumferentially with respect to the header. The creep data was recorded using a computerized data acquisition system equipped with highly accurate capacitance...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001067
EISBN: 978-1-62708-214-3
...Abstract Abstract The source of cracking in the circumferential weld seam in a JIS-SM50B carbon-manganese steel pipe used in a CO2 absorber was investigated, the absorber had been in service for 18 years. The seam had been weld-repaired twice, and the repair welds had been locally stress...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.pulp.c9001393
EISBN: 978-1-62708-230-3
...Abstract Abstract Three examples of corrosion-fatigue cracking from the toes of substantial fillet welds applied to seal-leaking riveted seams in steam accumulators are described. In the first case, this practice resulted in a disastrous explosion; in the second, which involved two identical...
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
... grinding damage, machining marks or nicks, and quench cracks resulting from heat treating operations. Frequently, stress concentrators are introduced during hot or cold forming of shafts; these include surface discontinuities, such as laps, seams, pits and forging laps, and internal imperfections...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001823
EISBN: 978-1-62708-241-9
... pipe steel, approximately 22 cm (8.7 in.) OD x 0.5 cm (0.2 in.) wall thickness, which was electric resistance welded along the longitudinal seam. The pressure at the time and location of the failure was 2760 kPa, which corresponds to 20% of the specified minimum yield strength. The cause of failure...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001618
EISBN: 978-1-62708-219-8
.... The arms were ordered in plate form as A588 grade 50. This plate was formed into an octagon shape, and the final seam was welded. These arms were welded to a bracket that was then bolted to the tower. Figures 1(a) and (b) show the arm and bracket. The arms were of two different wall thicknesses...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001813
EISBN: 978-1-62708-180-1
... in a machine assembly that was welded into its final location. During welding, which was conducted several inches from the spring, no shield was used to prevent spatter from landing on the wire surface. Figure 18 shows an elongated drop of metal a short distance from the fracture and two tiny droplets...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001304
EISBN: 978-1-62708-215-0
... of any kind of macroplastic deformation. The external surface of the diffuser assembly also showed evidence of abrasion (rubbing) along the exit flange of type 405 stainless steel and an appreciable reduction in thickness across the weld seam. These abrasion marks were observed only at a select location...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001609
EISBN: 978-1-62708-229-7
... welded to the header using a single 45° bevel, partial penetration, joint design machined into the header and a reinforcing fillet weld. The completed tube-to-header welds received a PWHT and were then hydrotested. The alloy 430 harps were fabricated in accordance with American Society of Mechanical...
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
..., such as electroplating, heat treatment, machining, or welding. These operations may also introduce possible defects ( Table 1 ) that may be considered in conjunction with possible defects from metalworking. Failures can also occur from a complex series of manufacturing factors. For example, the level of residual hoop...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001146
EISBN: 978-1-62708-229-7
...) was removed. Fig. 3 Layout of the top half of the vent header where sections NRC-2R and NRC-2L were removed (shaded areas). A metallurgical cross section of the vent header pipe and seam weld was cut, mounted and polished. The specimen was etched in a 10% Nital solution and then examined...
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
... were electroslag welded, and the welds were ground to match the curvature of the shell. The cylindrical shell sections were heated at 900 to 950 °C (1650 to 1740 °F) for 4 h, rounded in the rolls within that temperature range, and then cooled in still air for examination of the seams...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006760
EISBN: 978-1-62708-295-2
... or Laps Seams Cracks Shear-Induced Porosity Grinding Burns The tensile strength of the material is exceeded, causing a rupture (separation or fragmentation event). The fracture can be ductile or brittle, and it may be ductile at the macroscale and brittle at the microscale, or vice versa...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001152
EISBN: 978-1-62708-234-1
...-alloyed steel with 39 kg/sq mm tensile strength, which had been strengthened by welding plate strips on both sides had fractured in service; an axle tube out of 40 Mn 4 after DIN 17 200 from a paper fabrication machine, which had three short longitudinal slits distributed uniformly over its surface...
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
... life of cast components, but will give an unsatisfactory appearance or will make further processing, such as machining, more costly. Many such imperfections can be easily corrected by shotblast cleaning or grinding. Other imperfections or defects that can be more difficult to remove can...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001561
EISBN: 978-1-62708-229-7
... wall cracked-field weld), and SF 261 (uncracked-shop weld), as well as three uncracked longitudinal seam shop welds ( Figure 1 ). (Note: Six of the seven through wall cracks were from material of this heat number 334165.) Fig. 1 Location of welds and crack on 30 1 4 ″ piece of 8...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003517
EISBN: 978-1-62708-180-1
... Sigma phase sometimes is found in austenitic stainless steel weld metal as well as in gas turbine nickel-base superalloys. Although sigma phase can occur in the as-welded condition in stainless steels, it is more commonly encountered after long exposures at temperatures of 595 to 870 °C (1100 to 1600 °F...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0046044
EISBN: 978-1-62708-235-8
... annealed after spinning and before welding. All the components were joined by girth welds using the automatic gas tungsten are process. There were no longitudinal seams. The rocket-motor case was 7.6 m (25 ft) in length and 1.5 m (5 ft) in diameter and had a stock thickness of 4.6 mm (0.180...