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Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500249
EISBN: 978-1-62708-317-1
... Abstract Sheet metal spinning is a forming technique that produces axially symmetric hollow bodies with nearly any contour. It is often used in combination with flow forming and shear spinning to manufacture a wide range of complex parts. This chapter describes the operating principles, stress...
Abstract
Sheet metal spinning is a forming technique that produces axially symmetric hollow bodies with nearly any contour. It is often used in combination with flow forming and shear spinning to manufacture a wide range of complex parts. This chapter describes the operating principles, stress states, and failure modes of each process along with typical applications and tooling requirements.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740163
EISBN: 978-1-62708-308-9
... Abstract This chapter describes sheet metal forming operations, including cutting, blanking, piercing, and bending as well as deep drawing, spinning, press-brake and stretch forming, fluid forming, and drop hammer and electromagnetic forming. It also discusses the selection and use of die...
Abstract
This chapter describes sheet metal forming operations, including cutting, blanking, piercing, and bending as well as deep drawing, spinning, press-brake and stretch forming, fluid forming, and drop hammer and electromagnetic forming. It also discusses the selection and use of die materials and lubricants along with superplastic forming techniques.
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400005
EISBN: 978-1-62708-316-4
... of the process and a bullet-point list identifying relevant equipment, materials, variations, and applications. The chapter also discusses critical process variables, interactions, and components and the classification of sheet metal parts based on geometry. bending blank preparation deep drawing...
Abstract
This chapter provides a concise, design-oriented summary of more than 30 sheet forming processes within the categories of bending and flanging, stretch forming, deep drawing, blank preparation, and incremental and hybrid forming. Each summary includes a description and diagram of the process and a bullet-point list identifying relevant equipment, materials, variations, and applications. The chapter also discusses critical process variables, interactions, and components and the classification of sheet metal parts based on geometry.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480243
EISBN: 978-1-62708-318-8
... to achieve a desired radius. Spinning and Shear Forming Spinning and shear forming are processes for shaping sheet metal into seamless hollow parts using pressure on a rotating workpiece. Spinning involves only minor thickness changes in the sheet metal, whereas shear forming is an extension...
Abstract
This chapter describes the equipment and processes used to form titanium alloy parts. It discusses the advantages and disadvantages of hot and cold forming, the factors that influence formability, and the effect of forming temperature and lubricants. It describes common processes, including brake forming, stretch forming, deep drawing, and spin forming as well as roll forming, drop-hammer forming, tube bulging and bending, and superplastic forming. It also discusses dimpling and joggling and the use of hot sizing to correct springback.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060117
EISBN: 978-1-62708-261-7
... machining (EDM) NA A A A A A LC LC LC A LC Wire EDM NA A A A A A LC LC LC A LC Sheet metal forming NA A A A A A LC LC LC LC NA Metal spinning NA A LC A A A A LC LC LC LC (a) NA, not applicable; A, applicable and routinely done; LC, less common...
Abstract
This chapter describes the processes involved in the fabrication of wrought and cast metal products. It discusses deformation processes including bending and forming, material removal processes such as milling, cutting, and grinding, and joining methods including welding, soldering, and brazing. It also discusses powder consolidation, rolling, drawing and extrusion, and common forging methods.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390389
EISBN: 978-1-62708-459-8
... lubrication punch wear shearing sheet forming sheet metal lubricants spinning springback stretching wrinkling In Chapter 6 it was stated that by far the largest quantity of all metals (typically some 70 to 80%) is rolled into sheet and plate. Heavy plate is directly used after various...
Abstract
This chapter covers the mechanics and tribology of sheet metalworking processes, including shearing, bending, spinning, stretching, deep drawing, ironing, and hydroforming. It explains how to determine friction, wear, and lubrication needs based on process forces, temperatures, and strains and the effects of strain hardening on workpiece materials. It presents test methods for evaluating process tribology, describes lubrication and wear control approaches, and discusses the factors, such as surface roughness, lubricant breakdown, and adhesion, that can lead to galling and other forms of wear. It also provides best practices for selecting, evaluating, and applying lubricants for specific materials, including steels, stainless steels, and aluminum and magnesium alloys.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280091
EISBN: 978-1-62708-267-9
... fabricated to unique shapes. In the early days, superalloys, based on the cast cobalt dental alloy Vitallium, became the materials of choice for gas turbine engine airfoils. Some cobalt-base and nickel-base alloys became available as sheet to operate at temperatures then in effect. Gas turbines were...
Abstract
This chapter discusses the similarities and differences of forging and forming processes used in the production of wrought superalloy parts. Although forming is rarely concerned with microstructure, forging processes are often designed with microstructure in mind. Besides shaping, the objectives of forging may include grain refinement, control of second-phase morphology, controlled grain flow, and the achievement of specific microstructures and properties. The chapter explains how these objectives can be met by managing work energy via temperature and deformation control. It also discusses the forgeability of alloys, addresses problems and practical issues, and describes the forging of gas turbine disks. On the topic of forming, the chapter discusses the processes involved, the role of alloying elements, and the effect of alloy condition on formability. It addresses practical concerns such as forming speed, rolling direction, rerolling, and heat treating precipitation-hardened alloys. It presents several application examples involving carbide-hardened cobalt-base and other superalloys, and it concludes with a discussion on superplasticity and its adaptation to commercial forging and forming operations.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.tb.atia.t59340395
EISBN: 978-1-62708-427-7
... that approximately 60% of all cookware sold in the United States was produced from aluminum ( Ref 17.3 ). Forming Forming is simple for pizza pans and shallow frying pans. For saucepans, drawing may be required. Larger, deeper pots may require metal spinning , a forming process in which circles, typically O...
Abstract
This chapter details aluminum products most familiar to consumers including cookware, electronics and TVs, home interiors, luggage and briefcases, and outdoor furniture. Aluminum in art is also discussed.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ems.t53730051
EISBN: 978-1-62708-283-9
... temperature ). Ferromagnetic elements and Curie temperatures Table 5.1 Ferromagnetic elements and Curie temperatures Metal Curie temperature, °C (°F) Iron 1044 (1910) Cobalt 1121 (2050) Nickel 358 (675) Gadolinium 16 (60) Terbium –40 (–40) Dysprosium –181 (–295...
Abstract
This chapter is a review of magnetic materials and how they behave. It begins by discussing the significance of ferromagnetism and comparing the Curie temperature of several ferromagnetic elements. It then discusses the concept of magnetic domains and illustrates how flux paths, and magnetostatic energy, vary based on the size of the domain. It also discusses the process of magnetization and compares and contrasts hard and soft magnetic materials.
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230295
EISBN: 978-1-62708-298-3
... forming is completed, is needed only when forming relatively thick sheet metal or in severe forming. For some finish-formed parts, stress relieving has proved an effective means of counteracting “oil canning” or excessive warpage. When stress relieving is used, regardless of whether it is an intermediate...
Abstract
The vast majority of beryllium products are manufactured from blocks, forms, or billets of compacted powder that are machined or worked into shape. This chapter describes the metalworking processes used, including rolling, forming, forging, extrusion, drawing, and spinning. It covers the qualitative and quantitative aspects of each process and provides examples showing how they are implemented and the results that can be achieved. The chapter also discusses the issue of beryllium’s low formability and describes some of the advancements that have been made in near-net shape processing.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550193
EISBN: 978-1-62708-307-2
... joined by brazing. Fusion welding is not advisable in most situations, although beryllium can be fusion welded with aluminum filler metals with extreme care. Beryllium can be extruded into bar, rod, and tubing or rolled into sheet. The surface of beryllium can be polished to a very reflective mirror...
Abstract
Beryllium is an extraordinary metal with an unusual combination of physical and mechanical properties. It has low density, high stiffness, and excellent dimensional stability. It is also transparent to x-rays and can be machined to extremely close tolerances. This chapter discusses the properties, compositions, and processing characteristics of beryllium and its alloys. It provides information on powder production and consolidation, commercial designations and grades, wrought products, and forming processes. It also discusses the issue of corrosion, the use of protective treatments and coatings, and health and safety concerns.
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500273
EISBN: 978-1-62708-317-1
... with stretch forming ( Ref 13.18 ), as discussed in section 13.6, “Hybrid Process Variations,” in this chapter. 13.4 Multistage Forming Strategies The process limits of ISF have motivated research into multistage forming strategies. Inspired by the forming strategies used in sheet metal spinning...
Abstract
This chapter describes incremental sheet forming processes, including single-point, two-point, and kinematic (two tool) techniques. It provides information on the tooling and equipment used, work flow and forming parameters, process mechanics and forming limits. It also discusses multistage forming strategies, process modeling and simulation, and advanced hybrid forming processes.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.tb.atia.t59340001
EISBN: 978-1-62708-427-7
... with casthouse to supply metal to a hot and cold rolling complex capable of producing nearly 1 billion pounds of sheet per year. Warrick was designed for one purpose only: to produce can body and end stock at the lowest possible cost, even though the can market was in its infancy. Postwar Growth of Alcan...
Abstract
This introduction presents an overview of the discovery of aluminum, the origins of the aluminum industry, and the evolution of the industry.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ems.t53730081
EISBN: 978-1-62708-283-9
..., and the strain rate to produce 10% deformation over 750 years correspond to a viscosity less than could reasonably be expected by extrapolation to 20 °C (70 °F). The true explanation is that the glass varied in thickness when it was installed. Until the 19th century, sheets of glass were made by spinning hot...
Abstract
This chapter discusses the composition, properties, and uses of crystalline ceramics, glasses, clay, and concrete mixes. It also discusses the carbon structure of diamond, graphite, fullerenes, and nanotubes.
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ems.9781627082839
EISBN: 978-1-62708-283-9
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290207
EISBN: 978-1-62708-306-5
... material is soft enough to be cut or formed. Similar screws for wood are both self-drilling and self-tapping so that even a pilot hole is not necessary. Self-tapping screws are widely used in the assembly of sheet-metal components in which the thread-cutting action results in a good fit and is resistant...
Abstract
This chapter presents a comprehensive coverage of mechanical fastening methods. It begins with a discussion on the advantages and disadvantages of mechanical fastening followed by sections providing information on mechanically fastened joints and the selection of the correct fastener system. The chapter then describes important structural fasteners, namely bolts, screws, pins, collar fasteners, rivets, blind fasteners, machine pins, and spring clip fasteners. The following sections describe the process involved in presses, shrink fits, hole generation, and fastener installation. The chapter ends with information on miscellaneous mechanical fastening methods.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.tb.atia.t59340165
EISBN: 978-1-62708-427-7
... the metal into a closed die to form the depth of the wheel rim. At this stage, the forging looks like a big cup with a thick bottom. (Alternatively, the rim of the wheel could be formed by spinning to form the rim.) The forged pieces are loaded into baskets and passed through a continuous heat-treatment...
Abstract
Forged aluminum products vary widely in their production methods and applications. The forging process allows for control of microstructure and directional properties, and their fatigue and fracture resistance are superior to shape castings. This chapter presents the types, equipment, process steps, alloys, and products of aluminum forging.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310173
EISBN: 978-1-62708-286-0
... 0 + 2 r 45 + r 90 4 where R is the average strain ratio, r 0 is the strain ratio in the longitudinal direction, r 45 is the strain ratio measured at 45° to the rolling direction (of the sheet metal-forming operation), and r 90 is the strain ratio...
Abstract
The various types of stainless steel have very different deformation characteristics in terms of strain hardening and anisotropy. It is important to understand and exploit these characteristics to optimize forming of stainless steels. This chapter discusses the various deformation processes involved in sheet-forming techniques, namely stretch forming and deep drawing. In addition, it provides information on some of the factors pertinent to cold-heading and hot forming of stainless long products.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.tb.atia.t59340413
EISBN: 978-1-62708-427-7
... to a concrete base or connected to a light metal frame that can be moved as needed ALUMINUM, in the same way that it helped transform architecture and household life, its replacement of other metals created more efficient durable products for the power grid and transportation infrastructure. The impact...
Abstract
This chapter presents examples of aluminum infrastructure applications and their benefits to society. Infrastructure applications covered within this chapter include: electrical conductors; roads and bridges; highway signs, traffic signals, and license plates; railroad and highway crossings; solar energy generation; and agriculture and industrial applications.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.tb.atia.t59340211
EISBN: 978-1-62708-427-7
.... The customer, most of all, wants to put an aluminum coil or pallet of cut sheets on the fabrication line and run it at top speed without interruption or adjustments. Although the aluminum base metal price is important, forming can also be a major part of the manufacturing cost. Forming of aluminum requires...
Abstract
This chapter provides basic concepts and background for customer-related manufacturing processes applied to aluminum products including forming, joining and welding, surface treatments, and machinability. It reviews the selection criteria, key testing regimes, and original equipment manufacturer (OEM) requirements. The chapter also presents examples that demonstrate the importance of choosing the correct alloy and temper to successfully meet the OEM fabrication criteria.
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