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compression molding

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001491
EISBN: 978-1-62708-217-4
... as opposed to the bias direction. Hoop stresses on the nozzles introduced during proof testing applied significant bias direction loading. In testing after the failures, the nozzles exhibited reduced mechanical properties including tension and compression in the bias direction as compared to nozzles which...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003525
EISBN: 978-1-62708-180-1
... , as illustrated in Fig. 11 . This expansion is associated with rapid expansion as the internal stresses are relieved. This stress relief is due to molecular reorientation on attaining sufficient thermal freedom. In the absence of molded-in stress, the sample would compress due to the loss of load-bearing...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001303
EISBN: 978-1-62708-215-0
... resulted in considerable deformation and ultimate failure. Possible avenues for improvement include use of a premium-strength aluminum alloy, such as C-355 heat treated to the T6 condition. Strength and ductility in the critical bolt circle area would be optimized by the use of chills in the mold...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001845
EISBN: 978-1-62708-241-9
... al. A copper–nickel–silicon–chromium alloy for mold tooling. Mold Making Technol . ( 2007 ) 10.1074/jbc.M700193200 2. Monzen R. , Watanabe C. , Microstructure and mechanical properties of Cu–Ni–Si alloys . Mater. Sci. Eng. A 483–484 , 117 – 119 ( 2008 ) 10.1016/j.msea...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003507
EISBN: 978-1-62708-180-1
... internal quality due to compressive deformation Grain refinement Uniform grain structure Elimination of casting porosity and breakup of macrosegregation patterns Beneficial grain-flow pattern for improved part performance Improved toughness and/or fatigue resistance due to grain flow...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.9781627083294
EISBN: 978-1-62708-329-4
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003550
EISBN: 978-1-62708-180-1
... be rather extreme when the solubility parameter difference between rubber and solvent is small. Highly swollen rubbers will exhibit a severe loss of strength and stiffness, a high creep rate, and a high rate of stress relaxation or compression set. This last phenomenon can have an extremely adverse effect...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003532
EISBN: 978-1-62708-180-1
... thermoplastic mounting resin. Both thermosetting and thermoplastic materials require heat and pressure during the molding cycle, but, after curing, mounts made of thermoplastic resins must be cooled under pressure to at least 70 °C (158 °F), while mounts made of thermosetting materials may be ejected from...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006818
EISBN: 978-1-62708-329-4
... at the spall. Original magnification: 2.5× Fig. 8 Microstructures associated with the spalled hole ( Fig. 7 ) caused by improper electrical discharge machining technique. Etched with 3% nital Fig. 9 Plastic-mold die made from AISI S7 tool steel that was found to be cracked before use...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001814
EISBN: 978-1-62708-180-1
..., and so on) and machining processes (drilling, turning, milling, and so on). Second, tools and dies are generally used at higher hardnesses than most other steel products; 58 to 68 HRC is a typical range. Dies for plastic molding or hot working are usually used at lower hardnesses, typically from 30 to 55...
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
... Static Repeated Impact Tension Compression Shear Low Room High Brittle fracture X X X X … … X X … Charpy V-notch transition temperature. Notch toughness. K Ic toughness measurements Ductile fracture (a) X … … X … X … X X Tensile strength. Shearing...
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
... be provided by an electric motor, a turbine powered by compressed gas, human-powered pedals, and many other alternatives. In the case of an automobile, the available alternative sources of power are very familiar. In a new, less-familiar product, however, the advantage of function-first decomposition...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006765
EISBN: 978-1-62708-295-2
..., and epoxy, while methyl methacrylate is the most commonly used thermoplastic mounting resin. Both thermosetting and thermoplastic materials require heat and pressure during the molding cycle, but, after curing, mounts made of thermoplastic resins must be cooled under pressure to at least 70 °C (158 °F...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006816
EISBN: 978-1-62708-329-4
...) Presence of scale or decarburization Grinding stresses Localized stresses If abusive, localized martensitic microstructures Surface tensile stress, with subsurface compressive component Shot and grit blasting Localized surface stresses Very shallow and compressive surface...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001051
EISBN: 978-1-62708-214-3
... oxidizing potential in solution. Although the relative importance of residual stresses in fatigue life has been argued extensively, it is generally accepted that fatigue strength increases when the specimens tested have compressive residual stresses. If a weld has received insufficient or inadequate...
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
... that propagate ideally along shear planes. Like crazes, shear-deformation bands, or slip lines, are traditionally thought to be the mechanism of irreversible tensile deformation in ductile amorphous polymers. Almost invariably, a compressive-stress state will cause shear deformation in polymers. Under monotonic...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006831
EISBN: 978-1-62708-329-4
... of fins with change in principal casting dimensions A 123 (a) Formation of fins in planes related to direction of mold assembly (precision casting with waste pattern); principal casting dimensions change Cracked or broken mold A 200 Massive projections A 210 Swells A 212...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003508
EISBN: 978-1-62708-180-1
... molds. It presents the international classification of common casting defects in a tabular form. austenitic steels cast aluminum alloys cast iron casting casting defects casting design castings centrifugal casting corrosion-resistant castings discontinuities ductile iron gravity die...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001760
EISBN: 978-1-62708-241-9
... Alloy Permanent Mold Casting Alloy Material Specification , Standard No. IK-150-11-1-0014 ( 2007 ) 3. Test Method for Brinell Hardness Test of Metallic Materials , Standard No. ASTM E10-06 ( 2006 ) 4. Properties and Selection: Nonferrous Alloys and Special-Purpose Materials , vol. 2 . ASM...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001781
EISBN: 978-1-62708-241-9
... spectrometer (MAXx LMM04, SPECTRO Analytical Instruments) was used to analyze the elemental breakdown of the alloy. The spectrometer uses the Spark Analyzer Vision Software and is well suited for applications like die cast or injection molding and for standard requirements in steel or non-ferrous foundries...