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autoclaving

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Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003041
EISBN: 978-1-62708-200-6
...Abstract Abstract Autoclave molding is a process used to impart a controlled heat and pressure cycle cure to a layup. This article describes the materials used for preparing a layup, including peel ply, separator, bleeder, barrier, breather, dam, and vacuum bag. It describes the major elements...
Book Chapter

Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003412
EISBN: 978-1-62708-195-5
... for curing. It presents a discussion on the major elements of an autoclave system, namely, pressure vessel, gas stream heating and circulation sources, gas stream pressurizing systems, loading systems, and vacuum systems. The article describes a computerized approach to the simultaneous control of materials...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003425
EISBN: 978-1-62708-195-5
... stocks are stacked together and melt fused into sheet stock. Autoclave Material is laid to shape, vacuum bagged; autoclave heats TP to melt, applies pressure, and cools to consolidate. Continuous processes Pultrusion Slit tape stacks are pulled through a heated pressure die to generate...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001312
EISBN: 978-1-62708-170-2
... treatment processes, surface soil removal, blast cleaning, chemical descaling, pickling or etching, anodizing, autoclaving, polishing, buffing, vapor phase nitriding, and electroplating. Applications of these surface treatment processes are also reviewed. Selected References Selected References...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003036
EISBN: 978-1-62708-200-6
... molding, and autoclave molding - suited for making parts on open-faced molds using polyester and vinyl ester resins. The article also provides information on mechanically assisted lay-up which can be automated to alleviate some of the manual work. autoclave molding contact molding hand lay-up...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003459
EISBN: 978-1-62708-195-5
... for composites. The article concludes with a discussion on curing equipment such as portable repair systems, vacuum bags, and ovens and autoclaves. Selected References Selected References • Advances in Aircraft Composite Repair Symposium ( Farnborough, England ), 5–7 Sept 1994 , Society of Automotive...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003419
EISBN: 978-1-62708-195-5
... matched-die consolidation Fig. 4 Schematic of double-belt–press consolidation Fig. 6 Schematic of thermoplastic diaphragm forming in autoclave Fig. 5 Schematic of thermoplastic diaphragm forming in press Fig. 7 Schematic of thermoplastic compression molding...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003398
EISBN: 978-1-62708-195-5
... lay-up Yes (c) Yes (d) Yes No No No RTM Yes (c) Yes (d) Yes (d) No No No VARTM Yes (c) Yes (d) Yes (d) No No No Filament winding Yes (c) Yes (d) Yes (d) No No No Sheet molding No No Yes (d) Yes Yes Yes Press/autoclave molding No No Yes (d...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003404
EISBN: 978-1-62708-195-5
.../epoxy 25 1 202 444 1.6 Comparison of nickel, steel, and Invar autoclave molds Table 4 Comparison of nickel, steel, and Invar autoclave molds Face material Thickness Total weight Total cost Relative heat-up time mm in. kg lb Nickel 6 0.24 1093 2410 $39,400 1...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000629
EISBN: 978-1-62708-181-8
... epoxy resin. The composites were all fabricated by lay-up of prepreg tape and were autoclave cured 175 °C (350 °F) according to the manufacturer's recommendations. Specimens were then end-tabbed and cut in accordance with the ASTM D3039. The 0° and 90° tensile specimens were tested in accordance...
Book Chapter

By Te-Lin Yau
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003645
EISBN: 978-1-62708-182-5
... 7 Fig. 4 An autoclave drawing showing common components Abstract Abstract Immersion testing is the most frequently conducted test for evaluating corrosion of metals in aqueous solutions. This article focuses on the basic factors that are considered in different conditions...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003045
EISBN: 978-1-62708-200-6
... thermocouples within established limits. Autoclave air temperature, tool temperature, and part temperature, during various stages of processing, can vary by 55 °C (100 °F) or more during initial heating up to the processing temperature. A thermocouple that does not provide reliable data can cause the autoclave...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003695
EISBN: 978-1-62708-182-5
... to prolonged heating. For this reason, many synthetic rubber formulations display improved resistance to thermal exposure and heat aging. The four basic methods for vulcanizing or curing rubber linings are autoclave, internal steam, atmospheric steam, and ambient (chemical cure). Autoclave Cure Internal...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003476
EISBN: 978-1-62708-195-5
... and bottom duct halves are fabricated by hand lay-up of T300 carbon-PMR-15 preimidized fabric into external molds. The parts are then bagged and autoclave cured. Prior to production, the duct successfully underwent 2500 hours of ground testing and 700 hours of flight testing. By 2000, over 1000 composite...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003434
EISBN: 978-1-62708-195-5
... are sealed or covered with nonflaking, easily cleaned material, such as plastic, paint, or vinyl tile. Walls and ceilings are covered with a high gloss or semigloss enamel. Autoclaves, ovens, and vacuum system equipment are generally not in the controlled area, but if so the outlets from this equipment...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003039
EISBN: 978-1-62708-200-6
... by the curing operation, although some resin systems are room-temperature cured and do not require an oven. Several equipment options for oven curing are available. The most commonly used are ovens (gas-fired or electric), autoclaves, and microwave ovens. Most epoxy resin systems are cured in gas-fired...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003435
EISBN: 978-1-62708-195-5
... cracking is seen in the autoclave-processed laminate, resulting from outside-in solidification stresses. Fig. 2 Schematic of an equivalent circuit for a conducting polymer resin Fig. 10 Changes in ultrasonic signal velocity during processing of a compression molded carbon/ epoxy prepreg...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003368
EISBN: 978-1-62708-195-5
... of studies have shown that total manufacturing costs can be reduced 20 to 35% by use of automated material-placement machines. With thermoplastics, though, total savings from hot tape lay-up will be larger than with thermosets because compaction occurs during lay-up, and autoclave cure is not required...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001466
EISBN: 978-1-62708-173-3
... understood by a large number of materials and process engineers. However, far fewer people who actually control autoclaves are knowledgeable of adhesive chemistry or have real-time access to such information. With the help of a polymer chemistry expert, an experienced process engineer can identify the cause...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003403
EISBN: 978-1-62708-195-5
.... The model or pattern surface should not leak when subjected to vacuum or autoclave pressure or deform when heated. A pre-lay-up vacuum and/or pressure check is necessary prior to committing materials to the model surface. Appropriate draft angles should be designed into the model or pattern to ensure...