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piercing tools

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003181
EISBN: 978-1-62708-199-3
.... Most aluminum alloys require smaller clearances between punches and dies in blanking and piercing than do steels. For drawing operations, similar tool radii but larger clearances are required, with respect to steel, to allow for the free flow of the metal and to avoid excessive stretching during...
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 Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004005
EISBN: 978-1-62708-185-6
... designed for cold extrusion with high rigidity, accurate alignment, and long working strokes are described. The article details the factors that are critical in cold extrusion: punch design, die design, and tool design. It summarizes the role of lubricants during extrusion of steel, such as soap lubricant...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006753
EISBN: 978-1-62708-295-2
... Abstract This article briefly introduces the concepts of failure analysis, including root-cause analysis (RCA), and the role of failure analysis as a general engineering tool for enhancing product quality and failure prevention. It initially provides definitions of failure on several different...
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
... handling tools. If the finished part produced from the forging will have a drilled or bored hole central with the axis of the forging, it is often desirable, as a first-heat operation, to pierce a hole of suitable diameter and depth to facilitate handling in the second operation with a porter bar made to...
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 Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003180
EISBN: 978-1-62708-199-3
... also discussed. formability forming forming methods forming tools heat-resistant alloys lubrication refractory metals stainless steel STAINLESS STEELS are blanked, pierced, formed, and drawn in basically the same press tools and machines that are used for other metals...
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
... the various components of a cold-heading machine and the tools used in the cold heading process. These include headers, transfer headers, bolt makers, nut formers, and parts formers. The article explains the operations required for preparing stock for cold heading, including heat treating, drawing to...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003020
EISBN: 978-1-62708-200-6
... unique design considerations with respect to the physical properties, geometry, surface quality, process economics, equipment, and tooling of a component that should be considered in choosing RTM or SRIM over other competing processes for fabricating reinforced components. physical properties...
Book Chapter

Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003978
EISBN: 978-1-62708-185-6
... Abstract Open-die forging can be distinguished from most other types of deformation processes in that it provides discontinuous material flow as opposed to continuous flow. This article describes the equipment and auxiliary tools used in open-die forging. It discusses the production and...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003975
EISBN: 978-1-62708-185-6
.... Horizontal forging machines (upsetters) are able to upset, pierce, split, bend, and extrude simple or intricate shapes. The workpiece is gripped in the cavities or passes in the die halves, and the heading tool forces the heated material into the die cavity. Figure 3 illustrates typical three-pass dies...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003096
EISBN: 978-1-62708-199-3
..., sheet, strip, or plate into a hollow cylinder and welding the resulting longitudinal seam together or by generating an opening in a solid cylinder by piercing and elongating the resultant hollow cylinder. The first group of products is called welded and the second group, seamless. In producing...
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
... justified by improved load capability of the forged part. Open-die forging uses simple tools in a programmed sequence of basic operations (upsetting, drawing out), mostly in the hot-working temperature range, and the products (ranging from the one-off products of the blacksmith to huge turbine rotors...
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
... the location of the parting line at the sharp intersection of the drafted sides of the forging. Neither the parting line nor the flash line is used for locating tooling points. The typical tolerances for flash extension or for close trim preclude the precision required for locating tooling points...
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 Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004021
EISBN: 978-1-62708-185-6
... delayed until the 1990s ( Ref 7 ). Since then, many ideas to develop a practical 3-D numerical tool were evaluated and tested. The successful ones were finally implemented. After the mid-1990s, significant computing speed improvement was seen in personal computer (PC) technology, coupled with a lower...
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
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003183
EISBN: 978-1-62708-199-3
... the weight of the lower ram and piston assembly is greater than that of the upper assembly, the rams retract automatically after the blow. Retraction speed is increased by steam pressure acting upward on the piston. Through proper design relative to weights (including tooling and workpiece) and...
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...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003971
EISBN: 978-1-62708-185-6
... metalworking equipment microforming nickel-base alloys ring-rolling machines rolling mills surface-rolling machines thermomechanical process thread-rolling machines titanium-base alloys METALWORKING consists of deformation processes in which a metal billet or blank is shaped by tools or dies. The...