1-20 of 310 Search Results for

gray

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.c0047297
EISBN: 978-1-62708-235-8
... Abstract Door-closer cylinder castings manufactured of class 30 gray iron were breaking during machining. The manufacturing source reported that a random sampling of castings from this lot had hardnesses from 180 to 210 HRB. Based on the color of the components, heat treatment of these castings...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0047315
EISBN: 978-1-62708-225-9
... Abstract A sand-cast gray iron flanged nut was used to adjust the upper roll on a 3.05 m (10 ft) pyramid-type plate-bending machine. The flange broke away from the body of the nut during service. Analysis (visual inspection and 150x micrographs of sections etched with nital) supported...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0047332
EISBN: 978-1-62708-234-1
... Abstract Deterioration of the vanes and a wearing away of the area surrounding the mainshaft-bearing housing of the pump bowl for a submersible water pump used in a well field were noticed during a maintenance inspection. The bowl was sand cast from gray iron and had been in service...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c0047328
EISBN: 978-1-62708-231-0
... operating stress was needed to cause cracks. No cracks appeared when corrosion inhibitor was added to the cooling water. Corrosion prevention Inhibitors Water chemistry Gray iron Corrosion fatigue On cylinder inserts from a water-cooled locomotive diesel engine, cracks formed on the water...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c0047335
EISBN: 978-1-62708-219-8
..., and phosphorus. The high sulfur content is attributed to ferrous sulfide from a sulfate reducing bacteria frequently associated with clay soils. Reinforced coal tar protective coating was recommended. Bacteria Clay (material) Porosity Residues Soils (types) Gray iron Dealloying/selective leaching...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.pulp.c0048804
EISBN: 978-1-62708-230-3
... Abstract Several cases of failures in gray cast iron paper machine dryer rolls were evaluated. The rolls were found have ground outer cylindrical surfaces on which the paper web is dried. They were found to rotate about their longitudinal axes at speeds from 50 to 250 rpm while containing...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.pulp.c0089567
EISBN: 978-1-62708-230-3
... Abstract A paper drier head manufactured from gray cast iron was removed from service as a result of NDE detection of crack-like surface discontinuities. This component was subjected to internal steam pressure to provide heat energy for drying. Investigation (visual inspection, chemical...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c0089617
EISBN: 978-1-62708-232-7
... Abstract A forged 4130 steel cylindrical permanent mold, used for centrifugal casting of gray- and ductile-iron pipe, was examined after pulling of the pipe became increasingly difficult. In operation, the mold rotated at a predetermined speed in a centrifugal casting machine while the molten...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c0089526
EISBN: 978-1-62708-218-1
... Abstract A gray iron cylinder head cracked after approximately 16,000 km of service. The head was cracked on the rocker arm pan rail next to the No. 3 intake port and extended into the water jacket on the rocker-arm side of the head. Microporosity was revealed in the crack in the sections taken...
Image
Published: 01 June 2019
Fig. 2 Stereomicrographs of failed screws showing (a) dull and gray fracture surface, (b) Different gray levels demonstrating the different fracture modes in different regions More
Image
Published: 01 June 2019
Fig. 3 Intergranular fracture mode within gray area of flaw. Crack growth direction is from bottom to top. More
Image
Published: 01 June 2019
Fig. 1 Failed gray iron door-closer cylinder. (a) Overall view showing positions of fractures. 0.3x. (b) Parting line that was cracked on another casting. 1.5x More
Image
Published: 01 June 2019
Fig. 4 Formation of chromium sulfides (gray areas, such as marked by arrow) along the surface, caused by diffusion of sulfur species along the grain boundaries of IN-690 liner. As expected, sulfide concentration decreases with depth, due to diffusion limitations. Precipitates formed along More
Image
Published: 01 June 2019
Fig. 1 Sand-cast gray iron flanged nut that failed by brittle fracture. (a) Flanged nut, which was used to adjust a plate-bending roll, and the flange that fractured from the body. Dimensions given in inches. (b) Micrograph of a specimen from the flange showing coarse pearlite matrix, large More
Image
Published: 01 June 2019
Fig. 1 A view of the housing showing gray streaks characteristic of splay More
Image
Published: 01 June 2019
Fig. 1 Babbit microstructure. (a) The presence of α (gray matrix), β (cubic crystals), and η (arrow) phases (optical microscopy). (b) View of α phase (scanning electron microscopy). (c) Gas bubble (arrow) (optical microscopy). More
Image
Published: 01 June 2019
Fig. 7 Nickel-depleted porous regions (light gray area with cracks) present at damaged surface of failed wear ring. More
Image
Published: 01 June 2019
Fig. 1 One end of the freezer cylinder. Gray discoloration is evident several inches away from the end (right). More
Image
Published: 01 June 2019
Fig. 1 Sand-cast gray iron pump bowl that failed due to graphitic corrosion and erosion. (a) Section through the pump bowl. (b) and (c) Macrographs of sections through the corroded areas in the pump shell and vane, respectively, showing graphitic residue not eroded by the action of water More
Image
Published: 01 January 2002
Fig. 58 As-cast gray cast iron loaded in tension. It is common to find little or no macroscale information visible on the fracture surface of many casting alloys to indicate the fracture origin and direction of crack propagation. There are exceptions to this, including the nodular irons More