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Book Chapter

Welding in Space and Low-Gravity Environments

By Milo Nance, Jerald E. Jones

Book: Welding, Brazing, and Soldering

Series: ASM Handbook

Volume: 6

Publisher: ASM International

Published: 01 January 1993

DOI: 10.31399/asm.hb.v06.a0001465

EISBN: 978-1-62708-173-3

...-gravity environments and describes the unique aspects of the space environment. It compares the applicable welding processes, namely, electron-beam welding, laser-beam welding, and gas-tungsten arc welding and examines the metallurgy of low-gravity welds. Steps taken to ensure the continued development...

Abstract

Welding as an assembly process has become increasingly more attractive to designers of space structures because of its sufficient strength, endurance, reliability during their service lives, and ease of repair. This article reviews a variety of applications for welding in space and low-gravity environments and describes the unique aspects of the space environment. It compares the applicable welding processes, namely, electron-beam welding, laser-beam welding, and gas-tungsten arc welding and examines the metallurgy of low-gravity welds. Steps taken to ensure the continued development of welding technology in space are also discussed.

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Powder-feeding system: gravity- and vibration- based system

in Feedstock Material Considerations for Thermal Spray > Thermal Spray Technology

Published: 01 August 2013

Fig. 16 Powder-feeding system: gravity- and vibration- based system More

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Standard V-block set at an incline for gravity bonding of tensile specimens...

in Testing of Coatings > Thermal Spray Technology

Published: 01 August 2013

Fig. 4 Standard V-block set at an incline for gravity bonding of tensile specimens More

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Influence of specific gravity of petrolatum compound on film thickness for ...

in Rust-Preventive Compounds > Surface Engineering

Published: 01 January 1994

Fig. 3 Influence of specific gravity of petrolatum compound on film thickness for a specific weight of rust preventive applied to test panels. (a) Coating thicknesses up to 75 μm. (b) Coating thicknesses up to 750 μm More

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Operational principle of a gravity-feed powder spray gun

in Ceramic Coatings and Linings > Surface Engineering

Published: 01 January 1994

Fig. 4 Operational principle of a gravity-feed powder spray gun More

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Open evaporative cooling tower with gravity drain to holding tank indoors

in Water Cooling for Induction Systems > Induction Heating and Heat Treatment

Published: 09 June 2014

Fig. 8 Open evaporative cooling tower with gravity drain to holding tank indoors More

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Melting temperature versus specific gravity for 293 binary intermetallic co...

in Ordered Intermetallics > Properties and Selection: Nonferrous Alloys and Special-Purpose Materials

Published: 01 January 1990

Fig. 36 Melting temperature versus specific gravity for 293 binary intermetallic compounds. The solid line is an empirical approximate envelope to the data. Source: Ref 286 More

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(a) Close-up view (stereomicroscope) of dark gray stained area in a gravity...

in Common Defects in Various Casting Processes > Casting

Published: 01 December 2008

Fig. 11 (a) Close-up view (stereomicroscope) of dark gray stained area in a gravity permanent mold aluminum casting. (b) The occurrence of dendrites confirms the presence of shrink porosity in the stained area. Original magnification: 200× More

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Stress-number of cycles fatigue plot for a gravity die-cast automotive dies...

in Hot Isostatic Pressing of Castings > Casting

Published: 01 December 2008

Fig. 7 Stress-number of cycles fatigue plot for a gravity die-cast automotive diesel engine block. The alloy is AlSi7MgCu0.5. Fatigue life was determined using rotating beam equipment. At a given stress level, a three- to ten-fold increase in fatigue life is seen when HIP is used. The fatigue More

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Boundary condition for a gravity casting. ρ, melt density; g , acceleratio...

in Practical Issues in Computer Simulation of Casting Processes > Casting

Published: 01 December 2008

Fig. 3 Boundary condition for a gravity casting. ρ, melt density; g , acceleration of gravity More

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Gravity-fill pressure squeeze molding machine using match plate patterns

in Green Sand Molding > Casting

Published: 01 December 2008

Fig. 10 Gravity-fill pressure squeeze molding machine using match plate patterns More

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Copper-lead alloy liner (SAE 48), gravity cast against inner wall of cylind...

in Metallography and Microstructures of Lead and Its Alloys > Metallography and Microstructures

Published: 01 December 2004

Fig. 49 Copper-lead alloy liner (SAE 48), gravity cast against inner wall of cylindrical steel shell (bottom). Coarse copper dendrites, blunted by addition of silver, in a continuous matrix of lead. Compare with Fig. 50 . NH 4 OH + H 2 O 2 . Original magnification 100× More

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Copper-lead alloy liner (SAE 49), gravity cast against inside wall of cylin...

in Metallography and Microstructures of Lead and Its Alloys > Metallography and Microstructures

Published: 01 December 2004

Fig. 51 Copper-lead alloy liner (SAE 49), gravity cast against inside wall of cylindrical steel shell (bottom). Coarse copper dendrites (light) in a matrix of lead (dark). Compare with Fig. 52 . NH 4 OH + H 2 O 2 . Original magnification 100× More

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Relationship between yield strength and hardness for various gravity-cast a...

in Heat Treating of Magnesium Alloys > Heat Treating of Nonferrous Alloys

Published: 01 June 2016

Fig. 2 Relationship between yield strength and hardness for various gravity-cast and high-pressure die-cast (HPDC) alloys. Source: Gravity-cast alloy data, Ref 3 ; HPDC AZ91 data, Ref 2 , 4 ; various AE alloy data are original More

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