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grinding wheel

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001551
EISBN: 978-1-62708-233-4
... were ground. It was found that the natural frequency of the wheel truing device was the culprit. A tuned damped absorber was designed and built to modify the resonance. This eliminated the problem. Grinding machines Printing press rolls Shafts (power) Vibration analysis Structural steel...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c0091853
EISBN: 978-1-62708-223-5
... the conclusion that the primary feed material was harder than the grinding plates, causing wear and eventual failure. Recommendations included reducing the clearance between the flutes and possible material changes. Grinding wheels, Materials substitution Milling Gray iron Abrasive wear...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001163
EISBN: 978-1-62708-234-1
... grinding) 6 , especially if coarse grinding wheels are used. For this reason pickling should be used to remove the slag formed on welds made without a protective atmosphere 4 . If any one of the three basic requirements for SCC can be eliminated, then it cannot occur. The methods used in its prevention...
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
... of the built-up edge breaking off the cutting tool and damaging the surface of the workpiece. However, damage such as burns and cracks to the surface of hard alloys while grinding may be eliminated by increasing the workpiece feed rate and reducing the wheel speed. Long, stringy chips removed from cold...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001378
EISBN: 978-1-62708-215-0
...× Fig. 3 General microstructure of stud bolt, showing gray MnS stringer inclusions running parallel to longitudinal bolt axis in tempered martensite matrix. Nital etch. 380× Crack Origins/Paths All cracks originated at the bottom of the threads. Material A grinding wheel test...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001761
EISBN: 978-1-62708-241-9
.... The grinding wheel, if not new, should be dressed regularly, and proper grinding lubrication should be used. Misalignment of the ground crankshaft during assembly was another factor leading to failure because it created uneven load distribution along the crankshaft and could have resulted in overstressing...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006765
EISBN: 978-1-62708-295-2
... so that the outer edge of the specimen holder rotates out over the edge of the surface on the platen during grinding and polishing. This procedure can be used effectively with larger-diameter wheels, if the specimen holder diameter is large relative to the platen. The use of “hard,” woven or nonwoven...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003532
EISBN: 978-1-62708-180-1
... the edge of the surface on the platen during grinding and polishing. This procedure can be used effectively with larger-diameter wheels, if the specimen holder diameter is large, relative to the platen. The use of “hard,” woven or nonwoven, napless surfaces for polishing with diamond abrasives (rather than...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0048661
EISBN: 978-1-62708-225-9
... the break in the small end of the taper pin (arrow). (b) Fractured pin; note axial grinding marks on the surface. (c) Fretting on the portion of the shaft covered by the drive wheel Investigation Conclusions Recommendations Selected Reference Selected Reference • Fatigue Failures...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006837
EISBN: 978-1-62708-329-4
.... No discoloration indicates the crack was not open to the atmosphere Fig. 95 Mating fracture surface of Fig. 94 . Note the damage caused by postfracture wheel impact Fig. 96 Fracture surface and wheel impact damage. Red arrow indicates weld material and grinding marks Fig. 98 Head...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001059
EISBN: 978-1-62708-214-3
... to have suffered damage (sensitization) from a fire. Although no carbide precipitation was evident, pitting was discovered on the column OD in several areas above the insulation support rings. After grinding in these locations revealed fine circumferential cracking, field replicas were taken...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0009222
EISBN: 978-1-62708-180-1
... grinding can crack almost any properly hardened tool. Common grinding faults include: Scorching, by removing metal too rapidly. Grinding with a dull or loaded wheel. Grinding with a wheel of grit-size too fine for the job. Ineffective use of coolant. Grinding technique is not always...
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 Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006810
EISBN: 978-1-62708-329-4
... that the cause of failure could be determined. Most machining operations produce notches and may also cause residual tensile stresses on the surface of the workpiece. Grinding can cause local high-temperature heating followed by very rapid cooling as the surface of the workpiece leaves the grinding-wheel...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.9781627083294
EISBN: 978-1-62708-329-4
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006820
EISBN: 978-1-62708-329-4
... the pinion centerline is offset. They were originally developed to allow rear-wheel-drive cars to have a lower floor line. Compared with the spiral bevel gear, an advantage is that there is higher power capacity; disadvantages include a slightly reduced efficiency, an increase in sliding velocity...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001232
EISBN: 978-1-62708-233-4
... times the nominal stress can form at notches. In this sense, abrupt changes in cross-section, sharp edges, screw threads, grooves or borings, working faults such as turning or grinding grooves, surface damage such as rubbing or pressure points and stress cracks from grinding or welding 7 can act...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c9001496
EISBN: 978-1-62708-231-0
... two fractured areas went through the body of the gear. Wheel mileage of the assembly was 34,000 miles at the time of failure. All physical and metallurgical characteristics were well within specified standards, and both parts should have withstood normal loading conditions. The primary mode of failure...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001291
EISBN: 978-1-62708-215-0
... investigation revealed that the cracking was caused by the combination of incorrect grinding procedure, the presence of hydrogen, and fatigue. The grinding damage generated tensile stresses in the steel, which caused intergranular cracking during the plating cycle. The intergranular cracks were initiation sites...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001440
EISBN: 978-1-62708-235-8
... the hand wheel had not played any part. Tensile stress was present at the time of the failure sufficiently high to enable solder penetration to take place. The use of soft solder as a medium for attaching name-plates directly on to stressed steel parts is not recommended. It would be preferable to use...