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Milling cutters

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c9001155
EISBN: 978-1-62708-223-5
... was increased and the surface roughness measured more precisely. Arbors Milling cutters 16MnCr5E Fatigue fracture Ductile fracture Introduction 1. Appearance of Fracture 2. Check on Dimensions 3. Hardness 4. Chemical Composition 5. Microstructure 6. Conclusion Selected...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001384
EISBN: 978-1-62708-215-0
... with bolts manufactured using controlled processes. Machine tools Milling cutters 4340 UNS G43400 Hydrogen damage and embrittlement Background The draw-in bolt and the collet from a vertical-spindle milling machine broke during routine cutting of blind recesses after a relatively long...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003560
EISBN: 978-1-62708-180-1
... drill bit. Note that the final position of the hole is not where the drilling started (i.e., the drill wandered across the surface before “biting”) and the ragged nature of the periphery of the hole. Fig. 18 Macrographs of new (left) and worn (right) attrition mill wear plates Fig. 19...
Book Chapter

Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006790
EISBN: 978-1-62708-295-2
.... , The Failure Models Induced by White Layers during Impact Wear , Wear , Vol 185 , 1995 , p 17 – 22 10.1016/0043-1648(94)06586-1 35. Zheng Y.-K. and Yang Y.-Y. , Wear Characteristics of Large Grinding Balls in an SAG Mill , Tribol. Trans. , Vol 40 , 1997 , p 720 – 724 10.1080...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001814
EISBN: 978-1-62708-180-1
... edge after normal service life. Fig. 45 A typical example of freshly formed martensite at the tip of a failed shear blade. The hardness was 59 to 60 HRC. Etched with 3% nital. 50× Fig. 46 Macroetched (10% aqueous nitric acid) face of a cutter blade made from AISI S7 steel...
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
... in a forged, hardened alloy steel mill roll. The crack would have led to spalling in later service. These white-etching zones form from the original tempered martensite due to cyclic service stresses and are often observed at the initiation sites of spalls. Fig. 54 Spalling of the hard surface...
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
... adjacent, apparently undamaged tubes so that the total extent of damage can be assessed. The effect of the method of sample removal should be considered when choosing the size and location of samples. Mechanical methods of sample removal, such as cutting with a tube cutter, sawing, or drilling...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003510
EISBN: 978-1-62708-180-1
... with the sharp angles of cutouts. Avoid a sharp corner at the bottom of small openings, such as in drawing or piercing dies, because spalling or flaking is likely to result at these points. Keep hubs of gears, cutters, and so on as near the same thickness as possible, because dishing is likely to occur...