1-20 of 748 Search Results for

Hard surfacing

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047428
EISBN: 978-1-62708-235-8
... Abstract A cast dragline bucket tooth failed by fracturing after a short time in service. The tooth was made of medium-carbon low-alloy steel heat treated to a hardness of 555 HRB. The fracture surface was covered with chevron marks. These converged at several sites on the surface of the tooth...
Image
Published: 01 June 2019
Fig. 5 Map of hardness of outside surface of piece 5-1-D, compiled from hardness measurements using Rockwell hardness tests (subsequently, converted to Knoop hardness) and Knoop hardness measurements. More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0046378
EISBN: 978-1-62708-234-1
.... Analysis supported the conclusions that the leaks were caused by excessive sleeve wear that resulted from the presence of fine, abrasive silt in the river water. The silt, which contained hard particles of silica, could not be filtered out of the inlet water effectively. Hard surfacing Pumps...
Image
Published: 01 June 2019
Fig. 14 Shell position relative to the running surface in rail 5. Vicker's hardness readings show that shell forms at the interface of cold worked and soft material. More
Image
Published: 01 June 2019
Fig. 9 Distribution of vickers hardness near the fractured surface. In the symbol I, the middle black point is the mean value of vickers hardness and standard deviation is indicated by the bar enclosed lines. More
Image
Published: 01 December 2019
Fig. 2 Fractured main shaft showing fracture position and surface hardness (HRC) on various journals More
Image
Published: 01 December 2019
Fig. 8 The locations of hardness measurements below cracked surface More
Image
Published: 30 August 2021
Fig. 22 AISI S7 punch that had a low surface hardness after heat treatment and was given a second carburizing treatment, then rehardened. Cracking was observed after this retreatment (the cracks have been accentuated with magnetic particles). Coarse circumferential machining marks were present More
Image
Published: 01 December 1993
Fig. 5 Hardness profile across the weldment on the inner surface of the tank. (a) and on the outer surface (b) More
Image
Published: 01 December 1992
Fig. 6 Knoop hardnesses versus distance from the striking surface. More
Image
Published: 30 August 2021
Fig. 31 Surface finish modification factor vs. tensile strength or Brinell hardness for different surface finishes. Adapted from Ref 90 More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001722
EISBN: 978-1-62708-236-5
... Plating of Steel”—D.T.D. 916A (Superseding D.T.D. 916), December 1955, and the salient points which affect the service life of hard chromium-plated parts are summarised below: The process is for use primarily on carbon and low alloy steels which require a hard surface and is regarded...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003566
EISBN: 978-1-62708-180-1
... must produce a stress on the potential shear surface that exceeds the flow stress, if plastic deformation is to occur. Once the flow stress is exceeded, localized flow is likely to continue, because the strain-hardening coefficient, n , at high hardness is low, approximately 0.1. In the case of lower...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003571
EISBN: 978-1-62708-180-1
... of factors largely decide the mechanism of wear of a polymer surface when it comes in contact with another surface. Historically, polymer wear has been studied based on the prevailing wear mechanisms at the contact zone (between the polymer surface and a hard counterface), which led to several methods...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0047991
EISBN: 978-1-62708-225-9
... to specifications. Samples from both the inner and outer rings were examined. A much lower hardness (25.2 to 18.9 HRC) was indicated during a vertical traverse 4.1 cm from the outer surface of the outer ring while slightly lower hardness values (46.8 to 54.8 HRC) were seen on the hardness traverse on the inner ring...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006826
EISBN: 978-1-62708-329-4
... for the cutting tool. The wear environment also weakens the cutting tool so that sudden variations in thermal and/or mechanical loading cause rapid destruction of the tool cutting surfaces. These sudden variations may come from interrupted cuts, hard spots in the work material, or sudden loss of cutting fluid...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c0046388
EISBN: 978-1-62708-224-2
... Transverse sections were taken through the worn areas of the used bolts and through the corresponding area of the new bolt. The thimble was not sectioned, but hardness readings were taken on the outer surface adjacent to the top of the hole that normally wears under service conditions. Hardness values...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001503
EISBN: 978-1-62708-234-1
... of failure was insufficient surface hardness, resulting from improper heat treatment. A service recall for the remaining pinions was immediately initiated. Hardness Heat treatment Hypoid gears Railroad cars Trains 4820 UNS G48200 Abrasive wear The hypoid pinion shown in Fig. 1 was placed...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001645
EISBN: 978-1-62708-232-7
... tempered martensite. Microhardness measurements revealed that. Although the core hardness of the roller and the inner-race samples were similar, the surface hardness of the roller was approximately 8.5 HRC units harder than that of the inner-race. SEM observations of the roller fracture surface revealed...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c0047406
EISBN: 978-1-62708-232-7
... to 1045 steel. The pinion was annealed before flame or induction hardening of the teeth to a surface hardness of 363 HRB and a core hardness of 197 HRB. The broken pinion had a tooth which had failed by fatigue fracture through the tooth root because of the low strength from incomplete surface hardening...