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Body piercing

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Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005117
EISBN: 978-1-62708-186-3
... to deflect or whip on contact with the stock, adding the probability of breakage. The reinforcement provided to enable such piercing to be done consists of several elements. The point of the punch is made as short as possible; the main body of the punch is made large and is brought as close to the point...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005109
EISBN: 978-1-62708-186-3
... Abstract This article illustrates the characteristics of pierced holes and summarizes the hole wall quality. Specific guidance in selecting die clearances is provided by considering the types of edges produced with different clearances. The article discusses the effect of tool dulling...
Book Chapter

Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005160
EISBN: 978-1-62708-186-3
... the distance between each station. From this development, the process engineer determines how wide the strip should be ( Fig. 1 , Fig. 2 , Fig. 3 , Fig. 4 , Fig. 5 , Fig. 6 , Fig. 7 ). Fig. 1 Strip development for a ring-shaped part. Note locating notch pierced in first station. Flanges formed...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006501
EISBN: 978-1-62708-207-5
... or to other materials can be grouped into six general categories: Nails, staples, and other driven fasteners Solid, semitubular, hollow, and self-piercing rivets Threaded fasteners Blind fasteners (meaning that a hole or joint is accessible from one side only) Swaged collar fasteners (also...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005180
EISBN: 978-1-62708-186-3
.... This range makes it possible for the largest machines to handle practically any thickness of stock used in automotive body or chassis stampings. Smaller machines are limited in application to even smaller parts because the opening in the piercing head, which varies proportionately with press size...
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
... of the blind hole prevented the use of drop forging, the main body was hammer forged, and the blind hole was pierced in an upsetter. The closing of the gripper dies was used to advantage in hot sizing the flat portion of the forging. Example 5: Upsetting and Piercing an Irregularly Shaped Hammer-Forged Blank...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005108
EISBN: 978-1-62708-186-3
... classifications: Rectangular blanks Rough blanks Partially developed blanks Fully developed blanks These types of blanks are described in more detail in the section “Blanking Operations” in the preceding article “Blanking and Piercing” in this Volume. This classification of blanks has...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003429
EISBN: 978-1-62708-195-5
... shapes have been made with forward extrusion with a die and mandrel and with “bridge” dies as well as backward extrusion. An example of a die and mandrel setup is shown in Fig. 2 . The hole for the mandrel to pass through may be created by drilling billets or by piercing the billet in the extrusion...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003177
EISBN: 978-1-62708-199-3
... or nonferrous metals. The article reviews the various types of forming processes such as blanking, piercing, fine-edge blanking, press bending, press forming, forming by multiple-slide machines, deep drawing, stretch forming, spinning, rubber-pad forming, three-roll forming, contour roll forming, drop hammer...
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
... metalforming processes are transient, the updated Lagrangian method has been the primary FEM method for metalforming applications. Using this method for certain steady-state processes such as extrusion, shape rolling, and rotary tube piercing, however, may not be computationally efficient. In these special...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005539
EISBN: 978-1-62708-197-9
... such as extrusion, shape rolling, and rotary tube piercing, however, may not be computationally efficient. In these special applications, the arbitrary Lagrangian Eulerian (ALE) method recently has been used with great success. Heat-Transfer Model The heat-transfer model solves the energy balance equation...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005162
EISBN: 978-1-62708-186-3
..., and piercing (for example, see the articles “Blanking of Low-Carbon Steel” and “Piercing of Low-Carbon Steel” in this Volume). The choice of forming method depends on the desired size, configuration, and production quantities of a part. For example, press forming (where a punch presses the workpiece...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005104
EISBN: 978-1-62708-186-3
... cutters. The article also discusses the selection of materials for blanking and piercing dies and provides examples that illustrate the various types of tooling changes for blanking high-carbon steel. blanking coatings cold shearing high-carbon steel hot shearing lubrication piercing dies...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005139
EISBN: 978-1-62708-186-3
... Abstract This article discusses the selection of types of stainless steel for various methods of forming based on the formability and on the power required for forming. It reviews the requirements of lubrication, blanking, and piercing. The article describes various forming methods, namely...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001484
EISBN: 978-1-62708-173-3
... small, lightweight torches are used in conjunction with templates or a straight edge that requires one hand to be used for positioning while the other hand operates the torch. There are two means of starting the cut in manual PAC systems: edge starts and pierce starts. For edge starting, the torch...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005141
EISBN: 978-1-62708-186-3
... used in the forming. It also analyzes the various forming processes of aluminum alloys. The processes include blanking and piercing, bending, press-brake forming, contour roll forming, deep drawing, spinning, stretch forming, rubber-pad forming, warm forming, superplastic forming, explosive forming...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005122
EISBN: 978-1-62708-186-3
... shown in Fig. 2 . The procedure for making such a ring is described in Example 5 in this article. Fig. 2 Titanium alloy gas-turbine ring that was produced by compression forming. Dimensions given in inches Stretch forming is also used to shape automotive body panels, both inner and outer...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005607
EISBN: 978-1-62708-174-0
... no arcs or sparks; and is cost-competitive. Energy consumption is low when compared to resistance welding or self-piercing rivets. Weld times are short and equipment operation is similar to that needed for resistance welding, thus easing manufacturing acceptance. The first ultrasonic welding...
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
... of a simple cup is often produced by backward extrusion, although one or more operations such as piercing or coining are frequently included in the operations sequence. For cuplike parts that are more complex in shape, a combination of backward and forward extrusion is more often used. Example 1 describes...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005155
EISBN: 978-1-62708-186-3
... in.) or more. strain aging. anticlastic curvature. A con guration of a sheet or beam that is curved longitudinally in one barreling. Convexity of the surfaces of cylin- air bend die. Angle-forming dies in which the direction and transversely in the opposite drical or conical bodies, often produced metal...