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Book Chapter

By Mark Johnson
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002139
EISBN: 978-1-62708-188-7
... Abstract Tapping is a machining process for producing internal threads. This article provides a discussion on machines and accessories of tapping. It reviews the seven categories of taps, namely, solid, shell, sectional, expansion, inserted-chaser, adjustable, and collapsible taps, as well...
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Published: 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 More
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Published: 01 December 2008
Fig. 4 Adding the webs and tapering the tapping beads in the elbow fitting (a) and the tee fitting (b) assisted in distributing the molten metal and created a favorable freezing pattern that permitted adequate feeding of all sections of these stainless steel sand castings during solidification. More
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Published: 01 November 1995
Fig. 53 Boss requirements (self-tapping screw). D 1 and D 2 are very dependent on screw size. More
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Published: 01 November 1995
Fig. 2 Mechanical fastening with self-tapping screws More
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Published: 15 May 2022
Fig. 18 Graph of the increase in torque as self-tapping screws are tightened into a molded-in pilot hole More
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Published: 30 November 2018
Fig. 3 An aluminum induction melting furnace (2.5 ton) during tapping More
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Published: 30 September 2015
Fig. 16 Stacked sieves on a shaker with rotary and tapping action More
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Published: 30 September 2015
Fig. 17 Tapping apparatus More
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Published: 30 September 2015
Fig. 12 Influence of carbon/MnS addition for the moment during tapping. M5 straight flute tap with 7.2 mm (0.28 in.) tap length. Bottom hole was used in the initial investigation. More
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Published: 09 June 2014
Fig. 11 Tapping a 13.5 ton induction crucible furnace in a ladle for magnesium treatment and extracting fumes through the furnace hood More
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Published: 09 June 2014
Fig. 43 Melt temperatures in the transport ladle before tapping and in the pouring basin over a production time of 4 h at 7.2 tons/h pouring output. Source: Ref 43 More
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Published: 09 June 2014
Fig. 1 A 38 ton 16 MW/250 Hz induction crucible furnace before tapping in a steel foundry. Source: Ref 4 More
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Published: 09 June 2014
Fig. 7 A 2.5 ton aluminum melting furnace during tapping More
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Published: 09 June 2014
Fig. 20 Tapping a copper sintering melt from a 30 ton 6 MW/100 Hz induction crucible furnace. Courtesy of ABP Induction Systems. Source: Ref 4 More
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Published: 01 January 1989
Fig. 32 Progressive modification of tap design for tapping 1 4 –32 threads in stainless steel valve bonnets. (a) Original design: four-flute plug tap with conventional relief. Life: 2 holes. (b) Changed to two-flute tap with spiral point and 70% land relief. Life: 8 holes. (c) Two More
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Published: 01 January 1989
Fig. 16 Untreated versus nitrided and chromium-plated taps in tapping an alloy C61000 connector sleeve (95 HRB). Tapping was done in a vertical drill press. Dimensions in figure given in inches Condition or result (a) Untreated taps Treated taps Spindle speed, rev/min 575 900 More
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Published: 01 January 1989
Fig. 17 Cold form tapping of a blind hole in an alloy C51000 mounting stud. Dimensions in figure given in inches Machine Single-spindle automatic lathe Tool Fluteless tap, 3.18 mm (0.125 in.) in diameter Speed, at 3770 rev/min, m/min (sfm) 38 (123) Cutting fluid Light More
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Published: 01 January 1989
Fig. 12 Tapping six cavities in a 76 mm (3 in.) thick cast brake housing More
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Published: 01 January 1989
Fig. 11 Effect of cutting speed and cutting fluid in tapping solution-treated and aged Ti-6Al-4V with 375 HB hardness. Cutting fluid; A, phosphated (nonchlorinated) oil, 150 holes, and B, chlorinated oil, 9.1 m/min (30 sfm). Tap was a chromium-plated, spiral-point, three-flute 8 mm ( 5 16 More