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Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003981
EISBN: 978-1-62708-185-6
... of roll dies and auxiliary tools for the roll forging. It concludes with information on the production examples of roll forging. billets heated bars plates roll dies roll forging ROLL FORGING (also known as hot forge rolling) is a process for simultaneously reducing the cross-sectional...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003183
EISBN: 978-1-62708-199-3
... computer-aided design in the forging industry. Additionally, the article reviews specific characteristics, process limitations, advantages, and disadvantages of the most common forging processes, namely hot upset forging, roll forging, radial forging, rotary forging, isothermal and hot-die forging...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004010
EISBN: 978-1-62708-185-6
... Abstract This article describes the roll forming of components of nickel, titanium, and aluminum alloys. The metallurgical characteristics of the roll formed components, such as macrostructures, microstructures, tensile strength, and stress rupture performance, are discussed. The article...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004022
EISBN: 978-1-62708-185-6
... routinely provide invaluable insight into bulk-forming processes such as forging, extrusion, rolling, ring rolling, drawing, and cogging, only rarely can it produce an optimal design in the first attempt. A reincarnated legacy design can inherit a mixed bag of pluses and minuses. However, whether the past...
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
... redistribution of mass in preparation for the next impression. The stock usually is rotated, and two or more blows are needed to roll the stock. The operation of a roller impression is similar to that of an edger, but the metal is partially confined on all sides, with shapes in the top and bottom dies...
Book Chapter

Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004012
EISBN: 978-1-62708-185-6
... Abstract Thread rolling is a cold-forming process for producing threads or other helical or annular forms by rolling the impression of hardened steel dies into the surface of a cylindrical or conical blank. Methods that use cylindrical dies are classified as radial infeed, tangential feed...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006285
EISBN: 978-1-62708-169-6
... stretching a controlled amount (permanent set 1.5–3% for sheet and plate, 1–3% for rolled or cold-finished rod and bar, 1–5% for hand or ring forging and rolled ring). The products receive no further straightening after stretching.  W52 Solution heat treated (unstable temper) and stress relieved by...
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
... slow and severely limits output but avoids the cost of containment dies. By using a larger-capacity press and container dies, excellent blanks can be produced at a rate sufficient to maintain full ring mill production. For example, a mill that is rolling rings weighing up to 2000 kg (4400 lb) and...
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...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003178
EISBN: 978-1-62708-199-3
..., roll bending, and stretch bending), spinning, and straightening of bars, tubes, wires, rods and structural shapes. The article also discusses the machines and tools, including dies and mandrels, and lubricants used for these metal forming operations...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003983
EISBN: 978-1-62708-185-6
... hold the backers and dies and is mounted in a tapered-roller bearing. Flat steel shims are placed between the dies and backers. A roll rack containing a set of rolls is located between the press-fitted ring and the backers. A conventional impact-type backer is shown in Fig. 5 . The spindle is rotated...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003095
EISBN: 978-1-62708-199-3
... Abstract Hot-rolled steel bars and other hot rolled steel shapes are produced from ingots, blooms, or billets converted from ingots, or from strand cast blooms and billets, and comprise a variety of sizes and cross sections. This article provides a brief discussion on mechanical properties...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003992
EISBN: 978-1-62708-185-6
... carbon and alloy steels. Descriptions of these machines are provided in the articles “Hammers and Presses for Forging,” “Hot Upset Forging,” “Roll Forging,” and “Ring Rolling” in this Volume. In most applications, dies designed for the forging of a given shape from carbon or alloy steel can...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003177
EISBN: 978-1-62708-199-3
... material for short-run forming of small parts. This type of steel is not recommended without surface hardening except for quantities of less than 10,000 parts. In addition, hot-rolled mild steel can be used for dies where straightening facilities are available for correcting distortion induced by heat...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003091
EISBN: 978-1-62708-199-3
... of various steel manufacturing processes, such as ingot casting, continuous casting, and hot rolling. It provides an outline of specialized processing routes of producing ultralow plain carbon steels, interstitial-free steels, high strength low-alloy steels, ultrahigh strength steels, stainless...
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
... times when the forging was resting on relatively cool dies. In this approach, surface chilling of the workpiece was accounted for. Fig. 22 The four operations in the process are initial preform in the forming rolls, after bending (shown in bottom die), after blocker operation (shown in bottom die...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003097
EISBN: 978-1-62708-199-3
... requirements of the finished part ( Fig. 1 ). Finally, forgings are classified in terms of the forging equipment required for their manufacture: for example, hammer upset forgings, ring-rolled forgings and multiple-ram press forgings (see the Section “Forging” in this Handbook for more detailed information on...
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
... rolling, and knurling. Cold-heading machines vary in terms of the number of dies/stations, forging load, blank or wire size, blank cut-off length, speed, transfer mechanism, and special finishing capabilities, such as thread forming and knurling. Figure 8 shows a typical layout inside a six-die cold...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004008
EISBN: 978-1-62708-185-6
... bars protruding through the dies. The carriage is powered by a motor-driven chain(s) or hydraulic piston(s) to slide or roll along ways to pull the bar(s) through the die(s). As soon as the bar being pulled exits the draw die, the carriage automatically releases the bar and stops. The drawn bar is...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004035
EISBN: 978-1-62708-185-6
... tolerances to other forged products, such as forged extrusions, ring-rolled forgings, open-die or hand forgings, high-energy-rate forgings, no-draft forgings, and forgings produced in upsetter machines, are generally similar to those described for conventional closed-die hammer and press forgings, with a few...