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conventional die compaction

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Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004006
EISBN: 978-1-62708-185-6
... normal to the tool surface. In hydrostatic extrusion, a fluid film between the billet and the die exerts pressure on the deforming billet ( Fig. 1c ). The hydrostatic extrusion process is primarily used when conventional lubrication is inadequate, for example, in the extrusion of special alloys...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005186
EISBN: 978-1-62708-187-0
..., Pittsburgh, to cast and roll a steel plow, which it accomplishes at one-half the previous cost of the product. 1849—A manually operated die casting machine is patented to supply rapidly cast lead type for newspapers. 1850—Drop-bottom cupola is developed. 1863—Metallography is developed by Henry C...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003979
EISBN: 978-1-62708-185-6
... lubrication in forging. It discusses the types of closed-die forgings, namely, blocker-type, conventional, and close-tolerance. The article illustrates the classification of forging shapes and explains how to predict the forging pressure and the control of die temperature during closed-die forging. It...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009003
EISBN: 978-1-62708-185-6
... possible plastic deformation before fracture (ductility). Therefore, a complete description of the workability of a material is specified by its flow stress dependence on processing variables (for example, strain, strain rate, preheat temperature, and die temperature), its failure behavior, and the...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004017
EISBN: 978-1-62708-185-6
... determination of the extent of possible plastic deformation before fracture (ductility). Therefore, a complete description of the workability of a material is specified by its flow stress dependence on processing variables (for example, strain, strain rate, preheat temperature, and die temperature), its failure...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003053
EISBN: 978-1-62708-200-6
... uniaxial direction. The process is sometimes referred to as dust pressing, die pressing, or uniaxial compaction. The compaction force is generally applied only in the vertical direction by counteracting mechanical or hydraulic rams. Complex shapes possessing multiple holes, levels, and diameters can be...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003976
EISBN: 978-1-62708-185-6
... needed levels of resistance to wear, plastic deformation, and so forth are determined by factors such as type of equipment used, workpiece temperature, expected die temperature, and number of parts to be fabricated. Low-alloy steels and hot work die steels are often suitable for conventional metalworking...
Book Chapter

By Erhard Klar
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003185
EISBN: 978-1-62708-199-3
... Cost Excellent Good Poor Very good Source: Ref 7 Table 4 Application of powder processing methods Conventional die compaction Metal injection molding Hot isostatic pressing Powder forging Material Steel, stainless steel, brass, copper Steel, stainless steel...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001231
EISBN: 978-1-62708-170-2
... Abstract This article focuses on precision and ultraprecision finish machining techniques that make use of defined cutting edges, such as polycrystalline diamond and cubic boron nitride compacts. The techniques are finish turning, finish broaching, finish milling, and finish drilling...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003112
EISBN: 978-1-62708-199-3
... highly complex shapes. Compacting consolidates and densifies the loose powder into a shape called a “green compact.” With conventional pressing techniques, the compact has the size and shape of the finished product when ejected from the die. It has sufficient strength (termed green strength) for in...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005244
EISBN: 978-1-62708-187-0
..., and additives used in coremaking. It discusses the curing of compacted cores by core baking and the hot box processes. The article provides an overview of core coatings, assembling and core setting, coring of tortuous passages, and cores in permanent mold castings and investment castings. It also...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009005
EISBN: 978-1-62708-185-6
... to lap formation or incomplete die fill. As with draft angles, required radii increase with increasing forging difficulty of the workpiece alloy. Typical values for making 2.5 cm (1 in.) high ribs are given in Table 2 . Guidelines for minimum dimensions of ribs and webs in conventional hot forgings...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003183
EISBN: 978-1-62708-199-3
..., contributing to longer operating life. At the time of impact, forces are canceled out, and no energy is lost to foundations. In fact the large inertia blocks and foundations of conventional power-drop hammers are not required. A horizontal counterblow hammer has two opposing, die-carrying rams that are...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005287
EISBN: 978-1-62708-187-0
... solidification range is limited. In these cases, localized areas of shrinkage are inevitable in the absence of adequate thermal gradients accompanied by effective risering. Conventional pressure die casting uses gating principles that are different from those for gravity casting. Although the fundamental...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004013
EISBN: 978-1-62708-185-6
... wire drawing ( Ref 10 ). Many advanced materials are ductile at elevated temperatures, but brittle below a critical temperature. Hot deformation processing using conventional steel dies is not an option because die chill experienced by the surface can result in cracks. In addition, the flow stress of...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003988
EISBN: 978-1-62708-185-6
..., apparent density, flow, and composition are important characteristics for both conventional P/M and powder forging processes. The shape of the particles is important in relation to the ability of the particles to interlock when compacted. Irregular particle shapes such as those produced by water...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004001
EISBN: 978-1-62708-185-6
... gamma aluminides with particular reference to production scaleable techniques, including vacuum arc and cold-hearth melting, isothermal forging, conventional hot forging, and extrusion. The selection and design of manufacturing methods, in the context of processing-cost trade-offs for gamma titanium...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003172
EISBN: 978-1-62708-199-3
... that use ceramic molds include investment casting, and plaster casting. Metallic molds are used in permanent mold casting, die casting, semisolid casting, and centrifugal casting. centrifugal casting ceramic molds CO2 process cold box process die casting hot box process investment casting...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003141
EISBN: 978-1-62708-199-3
..., including all operations that convert ingot into general mill products, such as billet, bar, plate, sheet, strip, tube, and wire. The section on secondary fabrication describes processes such as die forging, extrusion, hot and cold forming, machining, chemical milling, and joining. The article presents a...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004024
EISBN: 978-1-62708-185-6
... Abstract This article describes two rapid tooling technologies, namely, direct rapid tooling and indirect rapid tooling, for forging-die applications. Commonly used direct rapid tooling technologies include selective laser sintering, three-dimensional printing, and laser-engineered net shape...