1-20 of 52 Search Results for

flexible sheet-forming

Sort by
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006927
EISBN: 978-1-62708-395-9
... for thermoforming (including vacuum forming and pressure forming) is most often manufactured from aluminum or other high conductivity materials used to cool the softened sheet during the low-pressure forming process. For thick wall thermoforming, the process used for structural parts (not thin-wall packaging...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006935
EISBN: 978-1-62708-395-9
... Cold press … 40 … + to − 11.0 1.5 High Low (a) SMC, sheet molding compound; HMC, high-strength sheet molding compound; BMC, bulk molding compound; ZMC, Z molding compound Process Effects on Molecular Orientation Polymer molecules in the melt form flow in a non-Newtonian manner...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006925
EISBN: 978-1-62708-395-9
... AN ENGINEERING PLASTIC is defined as a synthetic polymer with mechanical properties that enable its use in the form of a load-bearing shape. Polymers, which constitute the major portion of an engineering plastic, are made up of extremely large molecules formed from polymerization of different monomers...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006915
EISBN: 978-1-62708-395-9
... of polyethylene (PE) is so flexible that crystallization occurs even when the polymer melt is quenched (cooled rapidly). A special case is provided by liquid crystalline polymers, which form randomly arranged rodlike bundles in the melt or, in a different type, have side chains that spontaneously associate...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006864
EISBN: 978-1-62708-395-9
... in heavy-gage operations. The sheet is heated by both convection and radiant heat transfer from electrical heating elements. Film/foil forming requires specialized conductive heating elements. Using conduction heating instead of radiative heating elements prevents the film from excessive heating...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001817
EISBN: 978-1-62708-180-1
... be inspected immediately before forming and welding and can be rejected if it does not meet quality requirements. Alignment and drilling of tube sheets and tube-support plates to reasonable tolerances will ease tube insertion and will minimize stresses induced during the fabrication of heat exchangers...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001812
EISBN: 978-1-62708-180-1
... Fasteners Blind fasteners are usually multiple-piece devices that can be installed in a joint that is accessible from only one side. When a blind fastener is being installed, a self-contained mechanism, an explosive, or other device forms an upset on the inaccessible side. Pin Fasteners Pin...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006913
EISBN: 978-1-62708-395-9
..., so did the need for alternative materials with the necessary electrical properties that could be economically produced. Many different formulations and curing methods have resulted in different overall properties of plastic products, and it is this flexibility that makes these materials superior...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006805
EISBN: 978-1-62708-329-4
... mechanism, an explosive, or other device forms an upset on the inaccessible side. Pin fasteners are one-piece fasteners, either solid or tubular, that are used in assemblies in which the load is primarily shear. A malleable collar is sometimes swaged or formed on the pin to secure the joint. Special-purpose...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006923
EISBN: 978-1-62708-395-9
.... Any T m given is for remaining crystalline portion or for crystalline version. (b) Degradation temperature ( T d ) = 500 °C (930 °F). R contains at least one aromatic ring. (c) Based on private communication, American Cyanamid Co. Source: Ref 1 – 3 and product information sheets...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003541
EISBN: 978-1-62708-180-1
... strong covalent bonds that form chains, which are also frequently linked by strong primary bonds (i.e., ionic, covalent, and metallic) and/or weaker secondary bonds (i.e., hydrogen and van der Waals). Polymers may also exhibit limited crystallinity, which occurs when the polymer chains arrange...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006868
EISBN: 978-1-62708-395-9
... molds are most often granulated and reused in the feed stream to the injection unit. Scrap from die-cut sheet forms, such as food storage bags, or thermoformed thin gauge articles, such as coffee cup tops, are again salvaged in-line and routed to granulators to be prepared for reintroduction in the feed...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006785
EISBN: 978-1-62708-295-2
... Abstract Stress-corrosion cracking (SCC) is a form of corrosion and produces wastage in that the stress-corrosion cracks penetrate the cross-sectional thickness of a component over time and deteriorate its mechanical strength. Although there are factors common among the different forms...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006865
EISBN: 978-1-62708-395-9
... monomer units exhibit strong primary covalent bonds that form chains, which are also frequently linked by weaker secondary bonds (i.e., hydrogen bonding and van der Waals force). Polymers may also exhibit limited crystallinity, which occurs when the polymer chains arrange themselves into an orderly...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.9781627083959
EISBN: 978-1-62708-395-9
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006871
EISBN: 978-1-62708-395-9
... black, can act as UV screeners. Therefore, an unpigmented material would seem to be most susceptible to UV degradation. However, the use of certain pigments, such as titanium dioxide (especially in its anatase form), can actually photosensitize some materials and accelerate UV degradation. Fig. 2...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003570
EISBN: 978-1-62708-180-1
.... Both forms of liquid-impact erosion are discussed in detail in Friction, Lubrication, and Wear Technology , Volume 18 of ASM Handbook ( Ref 1 , 2 ). Most of what is presented in those articles is not repeated here; instead, emphasis in this article is on manifestations of damage and on ways...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003501
EISBN: 978-1-62708-180-1
... process. Simply restated, the primary measure of a successful design process is foreseeing and avoiding failure. Design generally requires specific engineering expertise and is performed by a wide variety of engineering disciplines, such as: Civil engineers design large structural forms...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006800
EISBN: 978-1-62708-329-4
... process. Simply restated, the primary measure of a successful design process is foreseeing and avoiding failure. Design generally requires specific engineering expertise and is performed by a wide variety of engineering disciplines, such as: Civil engineers design large structural forms...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003509
EISBN: 978-1-62708-180-1
...-known example is the brittle failure of several World War II ships, which split in half while still at dockside ( Fig. 1 , Ref 2 ). The fractures originated at weld discontinuities and propagated through carbon-steel plate, which had coarse pearlite formed by furnace cooling. The existence of a coarse...