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Through-Coolant Tools Raise Throughput
Articles March 1, 1999 Jerry Arpaio
Through-Coolant Tools Raise Throughput
Routing coolant out through the tip of the tool can provide greater control of temperatures and chips. This article describes the benefits of through-coolant tools and describes the methods of retrofitting machines to accept through-coolant tools.
Coatings Move Forward: Drilling Performance
Articles February 1, 1999 Michael Weiner
Coatings Move Forward: Drilling Performance
The PVD and CVD processes produce coatings with specific strengths and weaknesses. This article compares the processes and attempts to correct some common misconceptions about CVD coatings. The findings of a survey on tool coaters' use of coating materials and methods are also reported.
PVD Coatings for Turning
Articles February 1, 1999 P.C. Jindal
PVD Coatings for Turning
Researchers report on their study of coating performance. Their tests of TiN, TiCN and TiAlN coatings involved turning Inconel 718, medium-carbon steel and ductile cast iron. The wear rates and failure mechanisms of the coated tools are compared.
Machinability of Sintered Steel: Drilling Performance
Articles February 1, 1999 E. Gorzkowski
Machinability of Sintered Steel: Drilling Performance
Researchers from Lehigh University report the results of drilling tests conducted using sintered steel samples. The samples were prepared using different machinability-improving additives. The results showed that sintered steel with low-alloy steel and resulferized sintered steel are nearly as machinable as wrought steel.
The Pressure’s on to Improve Drilling
Articles February 1, 1999 Gregory S. Antoun
The Pressure’s on to Improve Drilling
The author explains how high-pressure, high-volume coolant can provide better control of chips and temperature during drilling operations. He also describes the tools, equipment and shop procedures that can ensure top performance from a high-pressure coolant system.
Learning With an Edge: General Industry Coverage
Articles December 1, 1998 Martin Eastman
Learning With an Edge: General Industry Coverage
Using his students as researchers, an industrial-arts teacher sets up an experiment to test claims being made for tool resharpening using cubic boron nitride wheels. The experiment taught the students how to keep a log of tool conditions, use and sharpenings as they gathered data for their study.
CMM Made Easy
Articles December 1, 1998 Keith Mills
CMM Made Easy
Next-generation CMM software offers users a simple interface, the ability to program the machine directly from CAD data files and the opportunity to write programs off-line. This article describes the latest advancements in CMM software and shows how older machines can be retrofitted to take advantage of the software's features.
Single-Pass Bore Finishing: General Industry Coverage
Articles October 1, 1998 Rober Marvin
Single-Pass Bore Finishing: General Industry Coverage
Superabrasive bore finishing can achieve results in one pass that rival the finishes produced in several passes by other bore sizing operations. This article recounts how a number of shops have used superabrasive tools to finish bores with a higher degree of quality and a lower overall cost per piece.
Fixturing Advances Hold New Promise
Articles October 1, 1998 Robert Eade
Fixturing Advances Hold New Promise
This article reviews the fixturing innovations users are beginning to see on the market. Some of the discussion focuses on the design criteria that has emerged out of an ongoing NIST-funded study.
Pipe Tapping: Guide to Taper Pipe Threads
Articles October 1, 1998 Wes Emerson
Pipe Tapping: Guide to Taper Pipe Threads
Pipe tapping is one of the more demanding threading operations because taper threads raise alignment, sealing, and tool-load requirements. This guide reviews the tools and techniques used to produce taper pipe threads reliably.

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