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roll forging

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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
... Abstract Roll forging is a process for simultaneously reducing the cross-sectional area and changing the shape of heated bars, billets, or plates. This article provides an overview of the process capabilities, production techniques, machines and machine size selection considerations, and types...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004037
EISBN: 978-1-62708-185-6
... Abstract Control of grain flow is one of the major advantages of shaping metal parts by rolling, forging, or extrusion. This article shows the effects of anisotropy on mechanical properties. Cylindrical forgings commonly have a straight parting line located in a diametral plane. The alternate...
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
... compares the resulting properties of roll formed and conventionally forged components. aluminum alloy macrostructures microstructures nickel alloy stress rupture tensile strength titanium alloy ROLL FORMING is employed where improvements in net-shape forming capability can be generated...
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
... practice of open-die forging, with some practical examples. The article illustrates macrosegregation in a large steel ingot and lists the forgeable alloys. It reviews the physical and mathematical models used in deformation modeling. The article explains the contour forging and roll planishing process. It...
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
... difficult alloys to forge are those with the greatest strength at elevated temperatures. Open-die, closed-die, upset, and roll forging and ring rolling are among the methods used to forge stainless steel. As in the forging of other metals, two of these methods are...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003996
EISBN: 978-1-62708-185-6
... Forgeability and forging temperatures of various aluminum alloys Aluminum alloys are produced by all of the current forging methods available, including open-die (or hand) forging, closed-die forging, upsetting, roll forging, orbital (rotary) forging, spin forging, mandrel forging, ring rolling...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003998
EISBN: 978-1-62708-185-6
... less important for forging than for other modes of deformation processing, such as rolling or sheet forming, where the lack of cold workability significantly limits the application of magnesium sheet. Because of the large deformations required to produce most forged articles of any alloy, the forger is...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003993
EISBN: 978-1-62708-185-6
... addition, heat must be maintained for a sufficient time during forging to ensure grain refinement, and forging dies must be kept in top condition. The hammers, presses, upsetters, roll and ring forging machines, and rotary forging machines used in the forging of steel are also used in the...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004000
EISBN: 978-1-62708-185-6
... forgings are produced by all of the forging methods currently available, including open-die (or hand) forging, closed-die forging, upsetting, roll forging, orbital forging, spin forging, mandrel forging, ring rolling, and forward and backward extrusion. Selection of the optimal forging method for a given...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003184
EISBN: 978-1-62708-199-3
... as 19-9 DL and A-286, are similar to austenitic stainless steels in forgeability. Most heat-resisting alloys, however, are more difficult to forge than stainless steels, although they can be forged by open-die or closed-die forging, upsetting, extrusion forging, roll forging, ring rolling, isothermal...
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.a0003999
EISBN: 978-1-62708-185-6
..., chain hooks, heat-exchanger headers, valve bodies, and pump bodies. Large, limited quantity shafts and seamless rings are made by open-die forging. Seamless rings and cases are also produced by ring rolling. Some nickel-base alloys are also produced into mill products, such as plates, sheets, and rods...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003997
EISBN: 978-1-62708-185-6
... cut from specially shaped extrusions or by using one or more blocking impressions in the forging sequence. Additional information on upset forging is available in the article “Hot Upset Forging” in this Volume. Ring rolling is sometimes used as a means of saving material when producing ring gears...
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...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004032
EISBN: 978-1-62708-185-6
... aluminum, isothermal and hot die forging, and the extrusion of steel. cold forging forging hot die forging hot forging steels lubricants molybdenum disulfide superalloys hot forging titanium hot forging FORGING and related processes consist of cold, warm, and hot forging; roll forging...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003994
EISBN: 978-1-62708-185-6
... are typically forged at temperatures higher than molybdenum or TZM because of their higher strengths, and in the case of tungsten, its lower forgeability. Molybdenum-rhenium alloys can be readily hot worked via extrusion, forging, swaging, and rolling, and Mo-47.5Re can also be cold swaged or cold...
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
... Machined wedge specimens are forged (or, equivalently, flat rolled) in the equipment in which the actual forging is to take place. This permits evaluation of the effects of working speed, and hence of die chilling due to heat transfer, on workability. Wedge preheat temperatures are selected on the basis of...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003974
EISBN: 978-1-62708-185-6
... movements cannot be classified into either of the two groups are called special-purpose machines. The machines belonging to this category are those operated on working media and energy. Various forming processes are associated with a large number of forming machines, including: Rolling mills for plate...
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
... stock undergoes extensive deformation during cogging and rolling of the original ingot. This creates inclusion stringers and leads to mechanical anisotropy. Directionality due to planes of weakness is especially evident in ductility and toughness values when testing bar stock in several sample...