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conventional piercing

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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...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004040
EISBN: 978-1-62708-185-6
... developing the large central cavity in the forging, several fastener holes in the comparatively delicate peripheral web were developed by drilling and reaming rather than by the use of small-diameter punches. Fig. 5 Three forgings that illustrate forged cavities produced by piercing. (a) Conventional...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003177
EISBN: 978-1-62708-199-3
...-high production. Pierced holes can be almost any size and shape; elongated holes are usually called slots. The accuracy of conventional tool steel or carbide dies provides pierced holes with a degree of quality and accuracy that is satisfactory for a wide variety of applications. Pierced holes...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003181
EISBN: 978-1-62708-199-3
... Abstract This article provides a detailed account on forming operations (blanking, piercing, press-brake forming, contour rolling, deep drawing, cold forming, and hot forming) of various nonferrous metals, including aluminum alloys, beryllium, copper and its alloys, magnesium alloys, nickel...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004036
EISBN: 978-1-62708-185-6
... Abstract In terms of the design of a forging, flash is an excess or surplus of metal that is trimmed or otherwise removed after forging operations are completed. This article discusses flash components and the functions of flash. It describes a series of conventional and unconventional flash...
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
... Abstract Coextrusion is defined as the simultaneous extrusion of two or more metals to form an integral product that can be carried out using conventional extrusion or drawing equipment at a temperature appropriate to the metal system being formed. This article discusses the applications...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005249
EISBN: 978-1-62708-187-0
... reproduced detail. The article describes three generally recognized plaster mold processes, namely, conventional plaster mold casting, the Antioch process, foamed plaster process. Ceramic molding techniques are based on processes that employ permanent patterns and fine-grained zircon and calcined, high...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003980
EISBN: 978-1-62708-185-6
... bolts or flanged shafts to wrench sockets that require simultaneous upsetting and piercing. Forgings that require center upsets (not at bar end) or offset upsets can also be made. In many cases, hot upsetting is used as a means of preparing stock for subsequent forging on a hammer or in a press. Hot...
Book Chapter

By Robert Bolin
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003982
EISBN: 978-1-62708-185-6
... these methods requires more time, more manpower, and a wide range of tooling. Handmade blanks also suffer from forging errors such as off-center punching and pierce defects or rags. While the initial investment is somewhat lower (most forge shops already have a press), in the long run, an automated ring...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003991
EISBN: 978-1-62708-185-6
... of the forging equipment required for their manufacture, such as, for example, hammer upset forgings, ring-rolled forgings, and multiple-ram press forgings. Fig. 1 Schematic composite of cross sections of blocker-type, conventional, and precision forgings Of the various classifications...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004004
EISBN: 978-1-62708-185-6
...-sectional area of a blank, which is at room temperature, at one or more points along its length. The material flow over the length where the cross-sectional area increases and the length decreases is identical to conventional upsetting. Along with the upsetting process, cold-headed parts may also undergo...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.9781627081610
EISBN: 978-1-62708-161-0
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004021
EISBN: 978-1-62708-185-6
..., FEM has evolved rapidly and is making great contributions to conventional metalworking technologies. The thousand-years-old technology has quickly evolved in the last 20 years in such a way that the FEM method is now routinely and successfully used in a wide range of bulk forming applications...
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...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006460
EISBN: 978-1-62708-190-0
... Industry 4.0 revolution. Laser-ultrasonics is a particular implementation of ultrasonic nondestructive inspection in which ultrasound is generated and detected by lasers. The piezoelectric transducer widely used in the usual or conventional inspection by ultrasound is replaced by a laser and optical...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.9781627081863
EISBN: 978-1-62708-186-3
Book Chapter

Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003987
EISBN: 978-1-62708-185-6
... it is preceded by other operations such as blanking, drawing, piercing, and bending. Coining is often the final operation in a progressive-die sequence, although blanking or trimming, or both, frequently follow coining. Development of Detail in the Workpiece . In coining dies, the prepared blank...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003166
EISBN: 978-1-62708-199-3
... for applications such as counterweights, radiation shields, and armor-piercing, kinetic-energy penetrators. Though lead is often thought of as the prototype high-density metal, its softness and low melting temperature make it inappropriate for many applications. In addition, the density of lead is...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005204
EISBN: 978-1-62708-187-0
... development of new grades and purities of conventional and exotic metals and alloys, for example, uranium, copper, precious metals, rare earth alloys, intermetallic materials, and ceramics. The total power of industrial installed electron beam melting and casting furnaces worldwide was approximately 35,000 kW...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003999
EISBN: 978-1-62708-185-6
... alloys can be hot-work tool steels, advanced cast nickel-base superalloys, or refractory alloys such as TZM-molybdenum (titanium/zirconium/molybdenum). Conventional tool steels such as H-13 can be used for forging lower alloy content nickel materials where die chilling is less critical. This is...