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compression forming

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003019
EISBN: 978-1-62708-200-6
... compression molding is currently used in automobiles to form low-cost semistructural components such as bumper backup beams, seats, and load floors. Other commercial applications range from office seating to large machinery housings. Commercially available materials include wood-filled polypropylene (PP) and...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009009
EISBN: 978-1-62708-185-6
... instabilities can develop in the compression test. Finally, metals become much more strain-rate sensitive at elevated temperature ( Ref 1 ). This makes strain-rate control in testing very important. Three forms of compression tests are discussed in this article: The cylindrical compression test, or hot...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004017
EISBN: 978-1-62708-185-6
... tests, such as the tension test, ring compression test, plane-strain compression test, bend test, indentation test, and forgeability test. It concludes with information on the role of the finite-element modeling software used in workability analysis. bend test bulk forming processes cracking...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003178
EISBN: 978-1-62708-199-3
... coils of varying diameters Fig. 13 Effect of distance between supports on straightness readings for round bars Abstract This article discusses the mechanics, surface preparation and principles of metal forming operations such as drawing, bending (draw bending, compression bending...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009004
EISBN: 978-1-62708-185-6
... compression. It should be possible, then, to predict fracture in bar rolling from compression tests on the alloy of interest. This is pertinent in current attempts to roll ingots of high alloy content into bar form. The complete workability study of bar rolling includes physical modeling of bar rolling to...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004028
EISBN: 978-1-62708-185-6
... complex forming operations, through the use of the finite element method, are also presented. axial deformation body centered-cubic sheets deformation texture finite element method forming plastic deformation rolled face-centered-cubic zirconium METALS are polycrystalline aggregates, that...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003177
EISBN: 978-1-62708-199-3
... information on the various drive systems and the auxiliary equipment. It describes the selection of die materials and lubricants for sheet metal forming and provides information on the lubrication mechanisms and selection with a list of lubricant types for forming of specific sheet materials of ferrous or...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004014
EISBN: 978-1-62708-185-6
... assembly and the material flow are in opposite directions ( Fig. 8b ). The cross section behind the rollers is stress free, but if the part has long, thin longitudinal cross section, it may fail due to compressive plastic instability if it is flow formed in the backward direction ( Ref 1 ). Selection...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.9781627081863
EISBN: 978-1-62708-186-3
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004001
EISBN: 978-1-62708-185-6
... aluminide alloys, are also discussed. aluminide alloy bulk deformation bulk forming cold-hearth melting conventional hot forging extrusion gamma titanium aluminide alloy intermetallic alloy isothermal forging microstructure silicide intermetallic alloy thermomechanical processing vacuum...
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
... reduction combination cannot maintain compressive axial stresses in the drawn component, the center portion will be stretched, and the tensile stress may increase to a level where bursting occurs ( Fig. 48 ). In the first forming operation for a component, the stresses in the component may be high, but the...
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
...) 0.16 5052-O 210 (30) 0.13 6061-O 205 (29.7) 0.20 6061-T6 410 (59) 0.05 7075-O 400 (58) 0.17 Source: Ref 16 The inherent compressive state of stress in roll forming, which is similar to incremental extrusion, allows large strains to be imparted on materials without...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003053
EISBN: 978-1-62708-200-6
... flow and fragmentation Bulk compression Springback Wet-bag isostatic pressing was the process developed first and is the most popular type of isostatic pressing. It is frequently used for the production of experimental or prototype parts, because parts can be formed to a rough...
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
... compressive loading. In sheet forming, on the other hand, a piece of sheet metal is plastically deformed by tensile loads into a three-dimensional shape, often without significant changes in sheet thickness or surface characteristic. Processes that fall under the category of bulk forming have the following...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005238
EISBN: 978-1-62708-187-0
... profile through the solidifying shell is almost linear. Because the interior cools relative to the fixed surface temperature, its shrinkage generates internal tensile stress, which induces compressive stress at the surface. With no applied external pressure, the average stress through the thickness must...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005950
EISBN: 978-1-62708-166-5
... higher CO 2 emissions as compared to conventional manufacturing methods such as forming and machining. Thus, the demand for sustainable and green manufacturing also compels manufacturers to think more on the improvement of the efficiency of heat treatment. In the last three decades, the computer...
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
...-sectional area or otherwise changing the shape of bars, tubes, or wires by repeated radial blows with two or more dies. The work is elongated as the cross-sectional area is reduced. The workpiece (starting blank) is usually round, square, or otherwise symmetrical in cross section, although other forms, such...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004005
EISBN: 978-1-62708-185-6
... Abstract Cold extrusion is a push-through compressive forming process with the starting material (billet/slug) at room temperature. This article provides information on the different types of steels that can be cold extruded. Mechanical presses and hydraulic presses that are specifically...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006783
EISBN: 978-1-62708-295-2
... Abstract Corrosion is the electrochemical reaction of a material and its environment. This article addresses those forms of corrosion that contribute directly to the failure of metal parts or that render them susceptible to failure by some other mechanism. Various forms of corrosion covered are...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003032
EISBN: 978-1-62708-200-6
... conventional processing methods, a few that are representative of the common, high-volume types as well as a few of the more specialized types. These materials are identified and briefly described, and their properties are presented in graphic and tabular form. This collection of data is not intended to be...