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Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005618
EISBN: 978-1-62708-174-0
... Abstract Laser has found its applications in cutting, drilling, and shock-peening operations of manufacturing industry because of its accurate, safe, and rapid cutting property. This article provides an account on the fundamental principles of laser cutting (thermal), drilling, and shock...
Abstract
Laser has found its applications in cutting, drilling, and shock-peening operations of manufacturing industry because of its accurate, safe, and rapid cutting property. This article provides an account on the fundamental principles of laser cutting (thermal), drilling, and shock-peening processes of which emphasis is placed on thermal laser cutting. It details the principal set-up parameters, such as the laser beam output, nozzle design, focusing optic position and characteristics, assist gases, surface conditions, and cutting speed. A discussion on the types of gas, supply system, purity level, and flow rates of lasing and assist gases is also provided. The article also describes the metallurgies and other key material considerations that impact laser-cutting performances and includes examples of laser cutting of nonmetal materials.
Book Chapter
Hole Drilling in Polymer-Matrix Composites
Available to PurchaseBook: Composites
Series: ASM Handbook Archive
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003426
EISBN: 978-1-62708-195-5
... Abstract Good hole-drilling processes are key to joining composite parts with other composite parts or with metal parts. This article discusses the considerations for drilling polymer-matrix composites. It describes the use of power-feed drill motors and automated drilling/fastener installation...
Abstract
Good hole-drilling processes are key to joining composite parts with other composite parts or with metal parts. This article discusses the considerations for drilling polymer-matrix composites. It describes the use of power-feed drill motors and automated drilling/fastener installation equipment. The article provides a discussion on reaming, countersinking, and three recommended choices of cutting tools for producing a countersink in carbon/epoxy structure. The cutting tools include: standard carbide insert cutters, solid carbide cutters, or polycrystalline diamond (PCD) insert cutters. The article concludes with a discussion on inspection of hole quality.
Book Chapter
Machining, Drilling, and Cutting of Polymer-Matrix Composites
Available to PurchaseSeries: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003042
EISBN: 978-1-62708-200-6
... Abstract This article describes the use of conventional machining techniques, laser cutting and water-jet cutting for producing finished composite parts. It explains two representative polymer-matrix composites--graphite and aramid composites--and discusses the machining and drilling problems...
Abstract
This article describes the use of conventional machining techniques, laser cutting and water-jet cutting for producing finished composite parts. It explains two representative polymer-matrix composites--graphite and aramid composites--and discusses the machining and drilling problems such as delamination and fiber or resin pullout. The article describes machining and drilling techniques and the necessary tools and cutting parameters. It presents a description of laser cutting. The article also provides information on the advantages, disadvantages, cutting characteristics, and applications of water-jet cutting and abrasive water-jet cutting.
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002163
EISBN: 978-1-62708-188-7
... Abstract This article describes the applications, process capabilities, and limitations and advantages of electrostream and capillary drilling. It describes equipment and tooling used for electrostream and capillary drilling. These include electrostream and capillary drilling machines, power...
Abstract
This article describes the applications, process capabilities, and limitations and advantages of electrostream and capillary drilling. It describes equipment and tooling used for electrostream and capillary drilling. These include electrostream and capillary drilling machines, power supplies, electrolyte system, part holding fixtures, cathode holders, and cathode tubes. Key process parameters for electrostream and capillary drilling are also discussed.
Book Chapter
Drilling
Available to PurchaseBook: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002135
EISBN: 978-1-62708-188-7
... Abstract This article focuses on machines that are designed, constructed, and used for drilling. It provides information on the design, materials, selection, and classification of drill. The article describes drills that are specially designed for hard steel and other specific applications...
Abstract
This article focuses on machines that are designed, constructed, and used for drilling. It provides information on the design, materials, selection, and classification of drill. The article describes drills that are specially designed for hard steel and other specific applications. A variety of drill point styles, such as single-angle points and reduced-rake points, are described. The article discusses the factors considered to obtain expected dimensional accuracy of holes. It explains the determination of the optimum speed and feed for drilling, which depends on the workpiece material, tool material, depth of hole, design of drill, rigidity of setup, tolerance, and cutting fluid. The article illustrates the effects of operating variables on drill life of hardened steel. The advantages, limitations, design considerations, insert configurations, and applications of indexable-insert drills are discussed. The article concludes with a discussion on the requirements to drill small holes that differ from those used in conventional drilling.
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Anode profile during EC drilling and EC bit drilling processes using (a) ba...
Available to PurchasePublished: 01 January 2003
Fig. 3 Anode profile during EC drilling and EC bit drilling processes using (a) bare tool, (b) coated tool, (c) bare bit tool. 1, bare tool; 2, coated tool; 3, bit-type tool; 4, work; 5, stagnation zone; 6, front zone; 7, transition zone; 8, side zone; 9, tapered side for bit-type tool; 10
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Correlation of hardness to drilling time (total time for drilling 25 holes)...
Available to PurchasePublished: 01 January 1989
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Laser-drilling applications from macro to micro. (a) Turbine engine blades ...
Available to PurchasePublished: 31 October 2011
Fig. 23 Laser-drilling applications from macro to micro. (a) Turbine engine blades made of nickel alloy need drilled holes that serve as air-cooling channels to maintain their temperatures below melting temperature while in operation. Each hole is approximately 0.5 mm (0.02 in.) in diameter
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Schematic representations of laser-drilling techniques. (a) Single-shot dri...
Available to PurchasePublished: 31 October 2011
Fig. 24 Schematic representations of laser-drilling techniques. (a) Single-shot drilling. (b) Percussion drilling. (c) Trepanning drilling. (d) Helical drilling. Courtesy of Trumpf Inc.
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Laser percussion drilling process. (a) Medium-energy, long pulses generate ...
Available to PurchasePublished: 31 October 2011
Fig. 25 Laser percussion drilling process. (a) Medium-energy, long pulses generate wide recast layers that can be a source of microcracks initiation sites in the Heat Affected Zone, HAZ. (b) High-energy, short pulses minimize and, in some cases, eliminate the recast layers and slag projections
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Multilayer board through-holes. (a) After drilling. Note resin smear over c...
Available to PurchasePublished: 01 January 1994
Fig. 6 Multilayer board through-holes. (a) After drilling. Note resin smear over copper inner layer surface, and loosely adherent debris covering surface. (b) After permanganate desmear. Note clean overall appearance and uniformly microroughened epoxy surface.
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Diagram of electrochemical drilling with outward mode of electrolyte flow s...
Available to PurchasePublished: 01 January 2003
Fig. 8 Diagram of electrochemical drilling with outward mode of electrolyte flow showing various zones. a s , side gap
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System for electrochemical deep-hole drilling. (a) Equipment. (b) Enlarged ...
Available to PurchasePublished: 01 January 2003
Fig. 2 System for electrochemical deep-hole drilling. (a) Equipment. (b) Enlarged view of tool and workpiece. (c) Dummy workpiece and tool. Source: Ref 8
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Deformed grain structure from drilling in solution treated and aged Ti-6Al-...
Available to PurchasePublished: 01 December 2004
Fig. 8 Deformed grain structure from drilling in solution treated and aged Ti-6Al-4V. Solution treatment was at 925 °C (1700 °F) and aged. Polishing was the four-step method for edge retention, and it was etched with the oxalic tint etch to reveal the deformed grain structure from drilling
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Tool life in drilling tests on sodium-modified and unmodified aluminum allo...
Available to PurchasePublished: 01 December 1998
Fig. 12 Tool life in drilling tests on sodium-modified and unmodified aluminum alloy 380. Drilling conditions: 80 m/min (260 ft/min); 0.08 mm/rev (0.0032 in./rev); water soluble oil 1 to 20; tool steel drill 0.10 mm ( 7 64 in.) diam, 118° point angle, 7° clearance angle, 6.4 mm
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Schematic of laser drilling approaches and their regime in terms of pulse d...
Available to PurchasePublished: 30 November 2018
Fig. 17 Schematic of laser drilling approaches and their regime in terms of pulse duration and machining rate
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Self-tapping and self-drilling screws. (a) Stainless steel self-tapping scr...
Available to PurchasePublished: 30 November 2018
Fig. 26 Self-tapping and self-drilling screws. (a) Stainless steel self-tapping screw. (b) 7075-T6 aluminum thread-forming screw into plastic. (c) Thread forming into cast aluminum blind hole with steel ALtracs screw. (d) Thread forming into cast aluminum with steel Taptite 2000 screw. (e
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Setup and conditions for the multiple-spindle drilling of holes in W2 die g...
Available to PurchasePublished: 01 January 1989
Fig. 5 Setup and conditions for the multiple-spindle drilling of holes in W2 die guide plates. Dimensions in figure given in inches Drill details Material M7 Diameter, mm (in.) 16.5 ( 21 32 ) Length, mm (in.) 130 (5 1 8 ) Helix angle, degrees 30
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Effect of drill-point design on life of T15 drills when drilling 7.87 mm (0...
Available to PurchasePublished: 01 January 1989
Fig. 8 Effect of drill-point design on life of T15 drills when drilling 7.87 mm (0.310 in.) deep holes in 20 mm (0.800 in.) thick Astroloy.
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Changes in drill design to improve tool life in hand drilling Inconel X-750...
Available to PurchasePublished: 01 January 1989
Fig. 9 Changes in drill design to improve tool life in hand drilling Inconel X-750. Graph shows effects on tool life. All drills were of screw-machine length, with a diameter of 2.5 mm (0.098 in.) and a flute helix angle of 29°. Designs 1 and 2 had a web thickness of 0.5 mm (0.020
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