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vacuum-assisted resin injection

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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
... designs ( Fig. 15 ). Hollow profiles are injected with compressed air so that the hollows do not collapse. In addition, profiles with hollow sections are run through vacuum plates where air is evacuated, and the outer surface of the profile is “pulled” to the walls of the vacuum plate for final sizing...
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
.... The high pressures used in such processes as injection molding can both reduce some of the effects of shrinkage, by packing out the mold, and cause distortion of the product, by increasing internal stresses. With glass-fiber-reinforced materials, shrinkage of the resin away from the surface during molding...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006916
EISBN: 978-1-62708-395-9
... applications, two-part systems are used. For example, in resin transfer molding (RTM), reaction injection molding (RIM), and vacuum assisted resin transfer molding (VARTM), a meter mixer is used to precisely mix parts A and B prior to injecting it into the mold cavity. If the mix ratio is not carefully...
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.a0006927
EISBN: 978-1-62708-395-9
..., especially interior corners. Resin Casting Casting is one of the most basic low-pressure molding processes and utilizes hollow tools or molds, sometimes with a vacuum assist to ensure complete filling of the mold. The low molding pressures allow for the use of low-cost tools, but this can also result...
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
... with various regions of the viscosity curve. It discusses the concept of shear sensitivity, the nature of viscoelastic properties, and the electrical, chemical, and optical properties of different plastics. It also reviews plastic processing operations, including extrusion, injection molding, and thermoforming...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006943
EISBN: 978-1-62708-395-9
... filaments. Both types of the hexaboride-type emitters require better vacuum than tungsten filament. The field-emission types used in SEM instruments are the Schottky emitter and cold-cathode emitter, both manufactured with a sharp tip. The Schottky emitter is made of a tungsten single crystal (100) coated...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006924
EISBN: 978-1-62708-395-9
... Abstract This article discusses the most common thermal analysis methods for thermosetting resins. These include differential scanning calorimetry, thermomechanical analysis, thermogravimetric analysis, and dynamic mechanical analysis. The article also discusses the characterization of uncured...
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
... on the manufacturability of the final part, influencing the ultimate quality of the casting and thus reducing the likelihood of failure due to defective parts. The designer can effectively assist the foundry with an understanding of what sections of the casting are critical to the final application and the mechanical...
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
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
.... Terminology and Background Environmentally induced cracking (EIC) is the term used to describe those forms of corrosion for which the physical manifestation of corrosion is cracking. (Environmentally induced cracking is also known as environmentally assisted cracking and environmental cracking...
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
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006834
EISBN: 978-1-62708-329-4
...), cast and machined brass or bronze, as well as injected thermoplastics such as polyamides (PA66) with additions of glass fibers (PA66-GF25–35), polyetheretherketone (PEEK), or phenolic resins. Fig. 7 Examples of cage/separator structures and materials. (a) Left to right: pressed low-carbon steel...