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George F. Vander Voort
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Paul Beiss
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Rafael Agnelli Mesquita, Reinhold Schneider, Cristiane Sales Gonçalves
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Rafael Agnelli Mesquita, Reinhold Schneider, Cristiane Sales Gonçalves
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Rafael Agnelli Mesquita, Reinhold Schneider, Cristiane Sales Gonçalves
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Kenneth E. Pinnow, Carl J. Dorsch
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Published: 01 January 2006
Book Chapter
Metallographic Techniques for Tool Steels
Available to PurchaseSeries: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003766
EISBN: 978-1-62708-177-1
... microscopic examination microstructure sectioning specimen mounting tool steel tool steel grades TOOL STEELS can be prepared for macroscopic and microscopic examination using the same basic procedures used for carbon and alloys steels. However, because many tool steels are highly alloyed...
Abstract
Tool steels are prepared for metallographic examination in the same way as carbon steels with a few variations owing to hardness and alloying differences. This article explains what makes tool steels different and how to compensate for it when sectioning, mounting, grinding, polishing, and etching. It provides information and data on composition, hot working, austenitizing, tempering, and powder metal manufacturing and explains how it affects tool steel microstructure, using more than 100 detailed images.
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006818
EISBN: 978-1-62708-329-4
... and die failures are also covered. In addition, the article focuses on a number of factors that are responsible for tool and die failures, including mechanical design, grade selection, steel quality, machining processes, heat treatment operation, and tool and die setup. cold working dies failure...
Abstract
This article discusses failure mechanisms in tool and die materials that are very important to nearly all manufacturing processes. It is primarily devoted to failures of tool steels used in cold working and hot working applications. The processes involved in the analysis of tool and die failures are also covered. In addition, the article focuses on a number of factors that are responsible for tool and die failures, including mechanical design, grade selection, steel quality, machining processes, heat treatment operation, and tool and die setup.
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
... picture of the damage, either internal or external. When this work is completed, several other phases of the study can begin. First, the composition of the component should be verified by a reliable method. Tool and die failures occasionally result from accidental use of the wrong grade of steel...
Abstract
This article describes the characteristics of tools and dies and the causes of their failures. It discusses the failure mechanisms in tool and die materials that are important to nearly all manufacturing processes, but is primarily devoted to failures of tool steels used in cold-working and hot-working applications. It reviews problems introduced during mechanical design, materials selection, machining, heat treating, finish grinding, and tool and die operation. The brittle fracture of rehardened high-speed steels is also considered. Finally, failures due to seams or laps, unconsolidated interiors, and carbide segregation and poor carbide morphology are reviewed with illustrations.
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002122
EISBN: 978-1-62708-188-7
... by increasing alloy content, without sacrificing toughness or grindability. Currently, ASP high-speed tool steel is available in three grades: ASP 23, 30, and 60 (ASP 60 can be made only by the powder metallurgy process). The compositions and recommended applications of these grades are given in Table 1...
Abstract
This article describes procedures for producing powder metallurgy high-speed tool steel powder by inert-gas atomization, followed by compaction by hot isostatic pressing. These include the anti-segregation process (ASP) and the crucible particle metallurgy (CPM) process. The article reviews the properties of ASP and CPM and summarizes the procedures to heat treat ASP high-speed tool steels. It discusses the processing steps, advantages, and applications of the FULDENS process that uses water-atomized powders compacted by vacuum sintering. The article also provides information on the applications of tool steels.
Book Chapter
Chemical Composition of Powder Metallurgy High-Alloy Tool Steels
Available to PurchaseBook: Powder Metallurgy
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006130
EISBN: 978-1-62708-175-7
... or 0.10% S, CPM Rex 7 with 0.07% S, and CPM Rex 86 with 0.12% S. Cold Working and Corrosion-Resistant Tool Steels The choice of PM cold-working HATS is not as large as that of PM HSS and, as with the latter alloy group, the market has focused on a few grades available all around the world...
Abstract
This article is a comprehensive collection of tables that list the nominal chemical composition of common powder metallurgy (PM) high-alloy tool steels, namely, PM high-speed, cold working, and corrosion-resistant tool steels.
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0009222
EISBN: 978-1-62708-180-1
... Abstract This article describes the six fundamental factors that decide a tool's performance. These are mechanical design, grade of tool steel, machining procedure, heat treatment, grinding, and handling. A deficiency in any one of the factors can lead to a tool and die failure. The article...
Abstract
This article describes the six fundamental factors that decide a tool's performance. These are mechanical design, grade of tool steel, machining procedure, heat treatment, grinding, and handling. A deficiency in any one of the factors can lead to a tool and die failure. The article presents a seven-step procedure to be followed when looking for the reason for a failure. A review of the results of the seven-point investigation may lead directly to the source of failure or narrow the field of investigation to permit the use of special tests.
Book Chapter
Heat Treating of Hot-Work Tool Steels
Available to PurchaseSeries: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005974
EISBN: 978-1-62708-168-9
... using examples. The article provides information on the North American Die-Casting Association's requirements for steel grades and heat treatment of dies made of hot-work tool steels. It also describes the chemical compositions and mechanical and metallurgical properties of hot-work tool steels...
Abstract
This article focuses on heat treating of the most important H-series and low-alloy hot-work tool steels, namely, normalizing, annealing, stress relieving, preheating, austenitizing, quenching, tempering, and surface hardening. It describes the heat-treating procedure for hot-work tools using examples. The article provides information on the North American Die-Casting Association's requirements for steel grades and heat treatment of dies made of hot-work tool steels. It also describes the chemical compositions and mechanical and metallurgical properties of hot-work tool steels.
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001042
EISBN: 978-1-62708-161-0
... is true of the sulfide inclusions in resulfurized grades. The size distributions of the primary carbides in P/M-produced and conventionally produced T15 have been measured, as shown in Fig. 3 . Most of the carbides in CPM high-speed tool steels are less than about 3 μm (120 μin.), while those...
Abstract
The powder metallurgy (P/M) process has been used primarily for the production of advanced high-speed tool steels. However, the P/M process is also being applied to the manufacture of improved cold-work and hot-work tool steels. The basic heat treatments for P/M high-speed tool steels include preheating, austenitizing, quenching, and tempering. This article describes manufacturing properties, cutting tool properties, and applications of P/M high-speed tool steels. It discusses the development of P/M high-speed alloy steels that cannot be made by conventional methods because of their high carbon, nitrogen, or alloy contents. For high-speed tool steels, a number of important end-user properties have been improved by powder processing; machinability, grindability, dimensional control during heat treatment, and cutting performance under difficult conditions where high edge toughness is essential. Several of these advantages also apply to P/M cold- and hot-work tool steels, which, compared to conventional tool steels, offer better toughness and ductility for cold-work tooling, better thermal fatigue life, and greater toughness for hot-work tooling.
Book Chapter
Cemented Carbides and Cermets
Available to PurchaseSeries: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003152
EISBN: 978-1-62708-199-3
... steel-bonded TiCs used for forming tools and other wear components have achieved commercial success for nonmachining applications. Manufacture of Cemented Carbides All cemented carbide components are manufactured by powder metallurgy (P/M) processing. As described below, the important steps...
Abstract
Cemented carbides belong to a class of hard, wear-resistant, refractory materials in which the hard carbide particles are bound together, or cemented, by a ductile metal binder. Cermet refers to a composite of a ceramic material with a metallic binder. This article discusses the manufacture, composition, classifications, and physical and mechanical properties of cemented carbides. It describes the application of hard coatings to cemented carbides by physical or chemical vapor deposition (PVD or CVD). Tungsten carbide-cobalt alloys, submicron tungsten carbide-cobalt alloys, and alloys containing tungsten carbide, titanium carbide, and cobalt are used for machining applications. The article also provides an overview of cermets used in machining applications.
Book Chapter
Heat Treating of Mold Steels and Corrosion-Resistant Tool Steels
Available to PurchaseSeries: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005976
EISBN: 978-1-62708-168-9
... Abstract This article provides a discussion on heat treating practices, namely, carburizing, normalizing, annealing, stress relieving, preheating, austenitizing, quenching, tempering, and nitriding for various grades of mold and corrosion-resistant tool steels. It details the characteristics...
Abstract
This article provides a discussion on heat treating practices, namely, carburizing, normalizing, annealing, stress relieving, preheating, austenitizing, quenching, tempering, and nitriding for various grades of mold and corrosion-resistant tool steels. It details the characteristics of various grades of mold and corrosion-resistant tool steels, including type P20, type P20Mod, AISI type 420, and AISI type 440B.
Book Chapter
Heat Treating of High-Speed Tool Steels
Available to PurchaseSeries: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005975
EISBN: 978-1-62708-168-9
... practices are summarized for two standard groups of high-speed steels and one intermediate group in Table 2 ; note that normalizing of high-speed tool steels is not recommended. Molybdenum high-speed steels (M type), notably the M2 grade, are today the most used high-speed steels worldwide, especially...
Abstract
This article focuses on various heat treatment practices recommended for different types of high-speed tool steels. Commonly used methods include annealing, stress relieving, preheating, austenitizing, quenching, tempering, carburizing, and nitriding. The article describes hardening for various types of cutting tools, namely, broaches, chasers, milling cutters, drills, taps, reamers, form tools, and hobs, and for thread rolling dies, threading dies, and bearings.
Book Chapter
Machining of Cast Irons
Available to PurchaseBook: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002178
EISBN: 978-1-62708-188-7
... fluid on tool life when drilling grade 32510 malleable iron with high-speed steels. Feed: 0.13 mm/rev (0.005 in./rev). Depth of hole: 25 mm (1 in.). The drill life end point was chosen to be 0.40 mm (0.015 in.) wear land or drill breakdown. Fig. 9 Effect of cutting speed and cutting fluid...
Abstract
This article discusses the factors influencing cast iron machining and selection of cutting fluid and cutting tool materials. It presents a comparison of machinability of different types of cast iron, namely, gray cast iron, ductile cast iron, and malleable cast iron. In addition, the article provides an overview of different methods used in the machining of cast iron, namely, turning, boring, broaching, planing and shaping, drilling, reaming, counterboring and spotfacing, tapping, milling, grinding, and honing and lapping. Nominal speeds and feeds for the machining of cast iron with single-point and box tools, ceramic tools, high-speed steel, and carbide tools are also tabulated.
Book Chapter
Selection of Materials for Press-Forming Dies
Available to PurchaseSeries: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005140
EISBN: 978-1-62708-186-3
... curved flanges (shrink or stretch) must be made of a higher grade of material. Tool steels are used for moderately long production runs. The following sections describe factors in the selection of materials for press-forming dies. When press forming low-carbon steel, dies are made from a wide range...
Abstract
This article reviews the production variables that influence the selection of various stamping die materials: ferrous, nonferrous, and plastic die materials. It provides a discussion on the specific types of die materials for tool steels, cast irons, plastics, aluminum, bronze, zinc-aluminum, and steel-bonded carbides. The article describes factors to be considered during the selection of materials for press-forming dies.
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001033
EISBN: 978-1-62708-161-0
... the chemical ranges permitted by specifications for the grade ( Ref 7 ). Machinability Ratings of Steels It is generally agreed that machinability, as defined by tool life, depends on or correlates with the following characteristics of the workpiece: Structure Chemical composition Dispersion...
Abstract
The machinability of carbon and alloy steels is affected by many factors, such as the composition, microstructure, and strength level of the steel; the feeds, speeds, and depth of cut; and the choice of cutting fluid and cutting tool material. This article describes the influence of the various attributes of carbon and alloy steels on machining characteristics. It lists the relative machinability ratings for some plain carbon steels, standard resulfurized steels, and several alloy steels. The addition of lead to carbon steels is one of the means of increasing the machinability of the steel and improving the surface finish of machined parts. Low carbon content of carburizing steels may be beneficial to tool life and production rate. The sulfur content of through-hardening alloy steels can significantly affect machining behavior. Cold drawing generally improves the machinability of steels containing less than about 0.2% carbon.
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002121
EISBN: 978-1-62708-188-7
... of approximately one part of molybdenum, by weight, for two parts of tungsten. The melting point of the molybdenum steels is somewhat lower than that of the tungsten grades, and thus they require a lower hardening temperature and have a narrower hardening range. The M-type high-speed tool steels are tougher...
Abstract
This article discusses the classifications of high-speed tool steels and describes alloying elements and their effects on the properties of high-speed tool steels. It analyzes the heat treatment of high-speed tool steels, namely, preheating, austenitizing, quenching, and tempering. Surface treatments for the high-speed tool steels are reviewed. The article emphasizes the properties and applications of high-speed tool steels and provides information on the factors in selecting high-speed tool steels.
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002124
EISBN: 978-1-62708-188-7
... are used in steel-cutting grades to resist cratering or chemical wear and are produced from metal oxides of titanium, tantalum, and niobium. These oxides are mixed with metallic tungsten powder and carbon. The mixture is heated under a hydrogen atmosphere or vacuum to reduce the oxides and form solid...
Abstract
This article discusses the manufacturing steps and compositions of cemented carbides, as well as their microstructure, classifications, applications, and physical and mechanical properties. It provides information on new tool geometries, tailored substrates, and the application of thin and hard coatings to cemented carbides by chemical vapor deposition and physical vapor deposition. The article also discusses tool wear mechanisms and the methods available for holding the carbide tool.
Book Chapter
Cutting Tool Materials
Available to PurchaseSeries: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003188
EISBN: 978-1-62708-199-3
... alloys cubic boron nitride cutting tool materials high-speed tool steels machining applications material grade selection polycrystalline diamond SELECTING THE PROPER CUTTING TOOL MATERIAL for a specific machining application can provide substantial advantages, including increased productivity...
Abstract
Selecting the proper cutting tool material for a specific machining application can provide substantial advantages, including increased productivity, improved quality, and reduced costs. This article begins with a description of the factors affecting the selection of a cutting tool material. This is followed by a schematic representation of their relative application ranges in terms of machining speeds and feed rates. The article provides a detailed account of chemical compositions of various tool materials, including high-speed tool steels, cobalt-base alloys, cemented carbides, cermets, ceramics, cubic boron nitride, and polycrystalline diamond. It compares the toughness, and wear resistance for these cutting tool materials. Finally, the article explains the steps for selecting tool material grades for specific application.
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001104
EISBN: 978-1-62708-162-7
... Abstract Cemented carbides belong to a class of hard, wear-resistant, refractory materials in which the hard carbide particles are bound together, or cemented, by a soft and ductile metal binder. The performance of cemented carbide as a cutting tool lies between that of tool steel and cermets...
Abstract
Cemented carbides belong to a class of hard, wear-resistant, refractory materials in which the hard carbide particles are bound together, or cemented, by a soft and ductile metal binder. The performance of cemented carbide as a cutting tool lies between that of tool steel and cermets. Almost 50% of the total production of cemented carbides is used for nonmetal cutting applications. Their properties also make them appropriate materials for structural components, including plungers, boring bars, powder compacting dies and punches, high-pressure dies and punches, and pulverizing hammers. This article discusses the manufacture, microstructure, composition, classifications, and physical and mechanical properties of cemented carbides, as well as their machining and nonmachining applications. It examines the relationship between the workpiece material, cutting tool and operational parameters, and provides suggestions to simplify the choice of cutting tool for a given machining application. It also examines new tool geometries, tailored substrates, and the application of thin, hard coatings to cemented carbides by chemical vapor deposition and physical vapor deposition. It discusses the tool wear mechanisms and the methods available for holding the carbide tool. The article is limited to tungsten carbide cobalt-base materials.
Book Chapter
Machining of P/M Tool Steels
Available to PurchaseBook: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002182
EISBN: 978-1-62708-188-7
... and Selection: Irons, Steels, and High-Performance Alloys , Volume 1, and “Particle Metallurgy Tool Steels” in Powder Metal Technologies and Applications , Volume 7 of the ASM Handbook . Commercial ASP tool steel compositions Table 1 Commercial ASP tool steel compositions ASP grade Composition...
Abstract
Wrought powder metallurgy (P/M) high-speed tool steels exhibit better machinability, dimensional control and safety in heat treatment, grindability, and edge toughness during cutting. This article discusses the two stages of machining of P/M tool steels: rough machining, in annealed condition, and finish machining, in hardened-and-tempered condition. It tabulates the composition of commercial crucible particle metallurgy and anti-segregation process tool steels and their typical machining conditions.
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