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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003229
EISBN: 978-1-62708-199-3
... Abstract Leak testing is used to determine the rate at which a liquid or gas penetrates from inside a component or assembly to the outside, or vice versa. This article discusses the type of leaks, namely real leaks, and virtual leaks. It describes the leak testing of fluid systems at pressure...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005758
EISBN: 978-1-62708-171-9
... the following: Hydrogen is a very flammable gas. Hydrogen gas in the air is extremely flammable in nearly any concentration. Any leak, no matter how small, must be addressed immediately. A hydrogen flame is virtually invisible either in an explosion or a deflagration. A flame from a leaky valve or fitting...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006336
EISBN: 978-1-62708-179-5
..., and leak testing. The technique, strengths, and weaknesses of each of the nondestructive methods are also discussed. cast iron dimensional inspection eddy-current inspection leak testing liquid penetrant inspection magnetic-particle inspection nondestructive inspection radiographic inspection...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005344
EISBN: 978-1-62708-187-0
... discontinuities defective surfaces incomplete casting incorrect dimension shrinkage cold shut THE FUNCTIONALITY OF CASTINGS is strongly dependent on casting soundness. Thus, castings need to be virtually free of defects that can result in premature failure of castings, broken machine tools, or poor...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003845
EISBN: 978-1-62708-183-2
... on these documents, as well as papers describing leak detection systems for FRP equipment, can be found in the Selected References of this article. Resins and Their Resistance to Various Environments Corrosion-resistant thermosetting resins can be categorized by families of resins and their associated types...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006438
EISBN: 978-1-62708-190-0
..., ultrasound, radiography, penetrant test, magnetic particle test, leak test, eddy current tests, potential drop tests, flash and vibro thermography, shearography, acoustic emissions, and many other methods. This article provides discussion on general NDE science and considerations for specific technique...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001269
EISBN: 978-1-62708-170-2
... to a reducing or radiant-tube furnace. The large volume of combustion products that is produced in the direct-fired furnace acts as either a barrier or a seal to pressurize the rest of the reducing furnace, which minimizes the consequences of small furnace leaks. Direct-fired furnaces usually have zones...
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
... composite tools are virtually the same as that required for other composite manufacturing. This makes it possible for most composite component manufacturers to make their own tool laminates in-house. A substantial cost savings can be realized. Another advantage of composite tooling is the relative ease...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003414
EISBN: 978-1-62708-195-5
... for vacuum infusion has been in large products that are made in small quantities. The major disadvantage of using vacuum is the sensitivity to leakage. A leak will result in air flowing into the mold. This often results in void-rich areas in the cured part. In RTM (with a pressurized resin tank and an outlet...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005276
EISBN: 978-1-62708-187-0
... vacuum die casting removes air and gases from the die casting die, improves the fill of the part, reduces dissolved gases in the molten metal, enhances leak tightness, allows T6 heat treating of aluminum and welding of the parts, addresses surface finish and coating issues, and can increase the burst...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005839
EISBN: 978-1-62708-167-2
... a part and presenting it to the inductor during the initial inductor design. The article provides information on coil leads/busswork and contacts that mechanically and electrically connect the induction coil head to the power supply. It concludes with a discussion on flux and oxide removal, leak and flow...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006663
EISBN: 978-1-62708-213-6
... leaks (typically air) into a sample or a slow leak out of a pressurized sample and the presence of internal “virtualleaks (tight internal volumes that only slowly transfer gas to/from the bulk sample). Cross contamination should also be considered if reusing sample containers. If a sample container...
Series: ASM Handbook
Volume: 24A
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.hb.v24A.a0006960
EISBN: 978-1-62708-439-0
... of these products must be considered as potential for leaks, spills, emissions, and undesired contacts with the employees using them or the AM equipment. Then, the process itself contains generally two sources of concern: energy used to transform the material, such as a laser beam (class 4, requiring...
Series: ASM Handbook
Volume: 2B
Publisher: ASM International
Published: 15 June 2019
DOI: 10.31399/asm.hb.v02b.a0006580
EISBN: 978-1-62708-210-5
... B443.0 can be cast into thin and intricate sections with ease. It is especially suited for pressure-tight, leak-proof castings. Castings in sand or chill mold exhibit virtually complete freedom from hot-tearing. Melting temperature for sand and permanent mold castings is 675–815 °C (1250–1500 °F...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003199
EISBN: 978-1-62708-199-3
... Applications Endothermic atmospheres can be used in virtually all furnace processes that operate about 760 °C (1400 °F) and require strong reducing conditions. The most common use is as carrier gases in gas carburizing and carbonitriding applications. Exothermic-Base Atmospheres Exothermic gases...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001282
EISBN: 978-1-62708-170-2
... of materials that can be used to make a coating. Virtually any material that melts without decomposing can be used. A second major advantage is the ability of most of the thermal spray processes to apply a coating to a substrate without significantly heating it. Thus, materials with very high melting points...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003554
EISBN: 978-1-62708-180-1
... specimens or components is virtually instantaneous, once a sufficient stress is present. In SMIE, smooth or notched specimens or components, under static loads, exhibit increasing time to failure with decreasing stress and a minimum stress for failure (i.e., a threshold). It has been proposed...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005955
EISBN: 978-1-62708-166-5
... of any gas needed for successful processing. Vacuum furnaces employ a special vacuum pump to remove most of the atmospheric air, before and during the heating of the work. In a leak-proof vacuum furnace, less than 0.001% of the original air remains when operating at a vacuum of about 0.13 Pa (10 −3...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006812
EISBN: 978-1-62708-329-4
... steel, causing intergranular cracks via liquid metal embrittlement. The piping was distorted and leaked at some of the welds. The locations and depths of the cracks were related to the welding parameters, including heat input. Excessive welding heat had caused dimpling (distortion) of the stainless...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001477
EISBN: 978-1-62708-173-3
... to a detectable size, the component is virtually at the end of its useful life and would normally be withdrawn from service. In the case of welded joints, there is practically no crack-initiation period, because of the presence of weld-toe discontinuities, which behave as preexisting cracks. As a result, the bulk...