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Published: 01 January 2006
Fig. 11 Proper and improper techniques for heavy cutting. (a) Proper torch position; preheat is primarily on starting face. (b) Improper start; oxygen stream is too far onto work, which results in action of cut as shown in (c) and in uncut corner as shown in (d). (e) Excessive oxygen pressure More
Image
Published: 01 January 1993
Fig. 7 Proper and improper techniques for heavy cutting. (a) Proper torch position; preheat is primarily on starting face. (b) Improper start; oxygen stream is too far onto work, which results in action of cut as shown in (c) and in uncut corner as shown in (d). (e) Excessive oxygen pressure More
Image
Published: 01 January 2006
Fig. 12 Proper and improper techiques for completing a heavy cut. (a) Minimum drag (typical at balanced conditions) permits flame to break through cutting face uniformly at all points. (b) Excessive drag, typically caused by insufficient oxygen or excessive speed, results in undercut. (c More
Image
Published: 01 January 2006
Fig. 13 Undercutting as an aid in starting a heavy cut More
Image
Published: 01 January 1993
Fig. 8 Proper and improper techniques for a heavy cut. (a) Minimum drag (typical at balanced conditions) permits flame to break through cutting face uniformly at all points. (b) Excessive drag, typically caused by insufficient oxygen or excessive speed, results in undercut. (c) Forward drag More
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005175
EISBN: 978-1-62708-186-3
... cutting, heavy cutting, and stack cutting. The article informs that the basic oxyfuel method can be modified to allow gas cutting of metals, such as stainless steel and most nonferrous alloys, that resist continuous oxidation. acetylene carbon steel cast irons chemical reactions heavy cutting...
Image
Published: 01 January 1989
Fig. 6 Typical manual-stroke honing machine employing automatic size control. Functions of components listed are described in the text. A, heavy cutting pressure control; B, spring; C, lever; D, feed screw; E, collar; F, light cutting pressure control; G, spring; H, lever; J, rod-and-fork More
Book Chapter

Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001483
EISBN: 978-1-62708-173-3
... and close-tolerance shapes. acetylene bars and structural shape close-tolerance cutting cutting equipment fuel gases heavy cutting light cutting medium cutting methylacetylene-propadiene-stabilized gas natural gas oxyfuel gas cutting OXYFUEL GAS CUTTING (OFC) includes a group of cutting...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006133
EISBN: 978-1-62708-175-7
..., as is common in machining of stainless steel. The use of coolants and lubricants is optional except for thread tapping. If used, they should be water-based, nonalkaline formulations. Tungsten heavy alloys may be readily cut using a heavy-duty shop band saw equipped with either a bi-metal blade with hook...
Image
Published: 01 January 2006
Fig. 4 Movement of torch when cutting cost iron. (a) Cutting thin cast iron. (b) Cutting heavy cast iron More
Image
Published: 01 January 1990
square with 25% cut balanced break. (d) Heavy gages; soft metal; all alloys. Edge square with slight roll. (e) As a rule, the heavy-gage, high-copper alloys have the greatest tendency to roll and burr. More
Image
Published: 01 January 2006
Fig. 21 Cross (a) that was gas cut, by method shown in (b), in approximately 8% of the time formerly required for producing it by band sawing (example 7). Dimensions in inches Operating conditions for gas cutting Cutting tip Heavy-duty Diameter of cutting- oxygen orifice 2.7 More
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002188
EISBN: 978-1-62708-188-7
... prevent heavy cuts; therefore, most roughing is done before age hardening. Solution annealing of age-hardenable alloys improves machinability by dissolving hard phases. A second method of minimizing work hardening during machining is to employ careful machining practices. Sharp tools with positive...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002187
EISBN: 978-1-62708-188-7
... be applied generously to the tool-workpiece contact area. Dry machining is not recommended, but is practiced successfully in some cases when small amounts of metal are removed. Emulsifiable oils mixed with water (ratio 1:20 to 1:10 for heavy cutting) are preferred to oil-base fluids because of their superior...
Book Chapter

Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002130
EISBN: 978-1-62708-188-7
... wrap themselves around the tool in heavy cuts, or mar the finish in a final cut. Avoidance of chip congestion is of particular importance in boring lead-base bearings. If a lead alloy chip becomes entrapped, it is likely to fuse and promote further congestion, damaging the surface of the workpiece...
Book Chapter

Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002132
EISBN: 978-1-62708-188-7
... or cutting edges. However, in applications involving hard work metals or heavy cuts, the cobalt types of high-speed steel, such as T6, T15, M6, or M44, will give better tool life. These more highly alloyed high-speed steels are generally used as inserts. Carbides Under conditions of maximum rigidity...
Image
Published: 01 January 1989
Fig. 9 Effect of cutting speed and cutting fluids in drilling solution-treated and aged Ti-6Al-4V having 375 HB hardness. Cutting fluids, wear rates, and tool life: A, chemical emulsion (1:15), 0.15 mm (0.006 in.) wear at 13 m/min (43 sfm), 250 holes; B, heavy-duty soluble oil (1:15), 0.15 mm More
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003189
EISBN: 978-1-62708-199-3
... the operations are not exceptionally severe. Extreme Pressure (EP) Additives Extreme pressure (EP) additives are added to fluids used for machining operations where cutting forces are particularly high, such as tapping and broaching, or for operations performed with heavy feeds. Chemical or EP additives...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002186
EISBN: 978-1-62708-188-7
... production on small, manually operated machine tools and on large, specially built, completely automated transfer machines operating at high production rates. The ease of machining magnesium results in significant benefits over more-difficult-to-machine metals. Heavy cuts can be taken at high speeds...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001485
EISBN: 978-1-62708-173-3
... Abstract This article describes the principles of operation, operating techniques, equipment selection, and important process variables of air-carbon arc cutting. It also provides information on the safety practices to be followed during the air-carbon arc cutting process. air-carbon arc...