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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
... Abstract Ring rolling is a process for creating seamless ring shaped components using specialized equipment and forming processes. This article provides information on the applications of ring rolling. It discusses the types of machines used for ring rolling, namely, vertical rolling machines...
Abstract
Ring rolling is a process for creating seamless ring shaped components using specialized equipment and forming processes. This article provides information on the applications of ring rolling. It discusses the types of machines used for ring rolling, namely, vertical rolling machines, radial-axial horizontal rolling machines, four-mandrel mechanical table mills, three-mandrel table mills, and automatic radial-axial multiple-mandrel ring mills. The article provides a discussion on the process control technology and ancillary operations of ring rolling. It describes the methods of producing ring blanks and the various types of blanking and rolling tools used in ring rolling process. The article concludes with a discussion on rolled ring tolerances and machining allowances.
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Ring rolling process. (a) Automotive ring gear during rolling. (b) View of ...
Available to PurchasePublished: 01 January 2005
Fig. 1 Ring rolling process. (a) Automotive ring gear during rolling. (b) View of a contour ring during rolling from the control room
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Published: 31 December 2017
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Blanking and rolling tools used in ring rolling. (a) Tapered indenting punc...
Available to PurchasePublished: 01 January 2005
Fig. 30 Blanking and rolling tools used in ring rolling. (a) Tapered indenting punch. (b) Tapered, swing arm mounted indent punch. (c) Press mandrel. (d) Piercing punch and support ring for a blanking press. (e) Typical mandrel for a mid-size mill. (f) Axial roll. (g) Main roll. See text
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Processing sequences for (a) ring rolling and (b) power spinning rocket eng...
Available to PurchasePublished: 01 January 2005
Fig. 17 Processing sequences for (a) ring rolling and (b) power spinning rocket engine case cylinders, together with the respective rocket engine case assemblies. See Example 11 . Dimensions in figure given in inches Item Ring-rolled forging (power spun) Material D-6ac steel
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Published: 01 January 2005
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Published: 01 January 2005
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Sketch of a three-mandrel mechanical ring rolling machine. (a) Side view. (...
Available to PurchasePublished: 01 January 2005
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Published: 01 January 2005
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Example of a ring rolling simulation program showing block, blank, and fini...
Available to PurchasePublished: 01 January 2005
Fig. 16 Example of a ring rolling simulation program showing block, blank, and finished wall thickness. Courtesy of SMS Eumuco Wagner Banning
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Schematic of a three-section ring rolling program on a computer numerical c...
Available to PurchasePublished: 01 January 2005
Fig. 21 Schematic of a three-section ring rolling program on a computer numerical controlled ring mill. In section 1, diameter growth rate increases linearly. In section 2, diameter growth rate is constant, compatible with ring stability and machine characteristics. In section 3, diameter
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Conventional aluminum alloy forgings for gimbal ring: ring-rolled (a) and f...
Available to PurchasePublished: 01 January 2005
Fig. 14 Conventional aluminum alloy forgings for gimbal ring: ring-rolled (a) and finished by closed-die forging (b). See Example 8 . Dimensions in figure given in inches Item Conventional closed-die forging (revised) Material and temper Aluminum alloy 2014-T6 (a) Forging
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Conventional ring-rolled forgings of original design (a) and revised design...
Available to PurchasePublished: 01 January 2005
Fig. 9 Conventional ring-rolled forgings of original design (a) and revised design (b), containing variations in depth of cavity and machining allowance. See Example 3 . Dimensions in figure given in inches Item Conventional ring-rolled forging (revised) Material AMS 4966 (Ti
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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
... Abstract Metalworking is one of the three major technologies used to fabricate metal products. This article tabulates the classification of metal forming processes. It discusses different types of metalworking equipment, including rolling mills, ring-rolling machines, and thread-rolling...
Abstract
Metalworking is one of the three major technologies used to fabricate metal products. This article tabulates the classification of metal forming processes. It discusses different types of metalworking equipment, including rolling mills, ring-rolling machines, and thread-rolling and surface-rolling machines. The article outlines the significant characteristics of pressing-type machines: load and energy characteristics, time-related characteristics, and accuracy characteristics. It summarizes different specialized processes such as advanced roll-forming methods, equal-channel angular extrusion, incremental forging, and microforming. The article describes the thermomechanical processing of nickel- and titanium-base alloys and concludes with information on the advancements in process simulation.
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Schematics showing types of rolling bearing cages. (a) Inner-ring land ridi...
Available to PurchasePublished: 31 December 2017
Fig. 8 Schematics showing types of rolling bearing cages. (a) Inner-ring land riding. (b) Rolling-element (here ball) riding. (c) Outer-ring land riding
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Relative displacement of material across the ring thickness during rolling....
Available to PurchasePublished: 01 January 2005
Fig. 15 Relative displacement of material across the ring thickness during rolling. Material near the outer portions of the wall thickness is displaced, while material near the center of the wall is relatively undisturbed.
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Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001021
EISBN: 978-1-62708-161-0
... Abstract Forgings are classified in various ways, beginning with the general classifications open die and closed die. They are also classified according to how they are made; such as hammer upset forgings, ring-rolled forgings, and multiple-ram press forgings; and in terms of the close...
Abstract
Forgings are classified in various ways, beginning with the general classifications open die and closed die. They are also classified according to how they are made; such as hammer upset forgings, ring-rolled forgings, and multiple-ram press forgings; and in terms of the close-to-finish factor or amount of stock that must be removed to satisfy the dimensional and detail requirements of the finished part. In addition to types and classifications, the article discusses critical design factors and ways to ensure that the resulting forgings measure up to metallurgical, mechanical property, and dimensional accuracy requirements. The responsibility for design verification is vested in material control, which depends on the proper application of drawings, specifications, manufacturing process controls, and quality assurance programs. The article addresses each of these areas as well as related topics; including stress-induced fatigue failure, tolerances, machining allowances; and the fundamentals of hammer and press forgings, hot upset forgings, and hot extrusion forgings.
Book Chapter
Carbide- and Boride-Based Thick Coatings for Abrasive Wear-Protection Applications
Available to PurchaseSeries: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006364
EISBN: 978-1-62708-192-4
..., thus allowing a rough materials selection for practitioners. It presents a brief discussion on hot isostatic pressing (HIP) cladding, sinter cladding, and manufacturing of thick wear-resistant coatings by extrusion or ring rolling. The article also discusses the processing sequence of thick wear...
Abstract
This article provides a brief introduction to abrasive wear-resistant coating materials that contain a large amount of hard phases, such as borides, carbides, or carboborides. It describes some of the commonly used methods of producing thick wear-resistant coatings. The article also provides information on metal-matrix composites and cemented carbides. The three base-alloying concepts, including cobalt-, iron-, and nickel-base alloys used for wear-protection applications, are also described. The article compares the tribomechanical properties of the materials in a qualitative manner, thus allowing a rough materials selection for practitioners. It presents a brief discussion on hot isostatic pressing (HIP) cladding, sinter cladding, and manufacturing of thick wear-resistant coatings by extrusion or ring rolling. The article also discusses the processing sequence of thick wear-resistant coatings, namely, compound casting, deposition welding, and thermal spraying.
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Published: 01 January 2005
Fig. 15 Blocker-type hollow-oval nose cowl ring forging. See Example 9 . Dimensions in figure given in inches Item Blocker-type forging Material Aluminum alloy 2014 (a) Forging equipment 710 MN (8000 tonf) press Forging operations Pierce biscuit; ring-roll; squeeze
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Effect of blank design and wall thickness-to-height reduction ratios in rin...
Available to PurchasePublished: 01 January 2005
Fig. 18 Effect of blank design and wall thickness-to-height reduction ratios in ring rolling. (a) Rolling of washer-type rings. (b) Rolling of sleeve-type rings
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