Patent
Welding apparatus method for depositing wear surfacing material and a substrate having a weld bead thereon
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TLDR
In this paper, the welding method is used to lay down weld beads on metallic substrates with a narrow width of 0.125 inch and less, and the powdered metal which is delivered is laid down in a series of overlapping weld deposits which solidify very rapidly and produce a fine grain structure.Abstract:
The welding method may be used to lay down weld beads on metallic substrates with a narrow width of 0.125 inch and less. The process employs a plasma transferred arc and pulses the current delivered to the arc such that a wave form having at least a main amplitude and a lower auxiliary amplitude is provided. The powdered metal which is delivered is laid down in a series of overlapping weld deposits which solidify very rapidly and produce a fine grain structure.read more
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Gilbert E. Flowers,Earl Leroy Kelly,Warren Davis Grossklaus,James D. Barber,Gray W. Grubbs,Levi Williams +5 more
TL;DR: In this article, a nickel-base superalloy article is first heated to a welding temperature of from about 1650° F to about 2000° F in an inert atmosphere, and a damaged area of the article is weld repaired using a plasma-transferred arc welder which vaporizes a filler metal in a plasma arc and deposited the vaporized metal onto the article to form a weld overlay.
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Method of depositing metal
Manz August F,Saenger Jr John F +1 more
TL;DR: In this paper, a CVD (chemical vapor deposition) process is indicated to provide a method for depositing a source metal on a receiving metal joined to a ceramic substrate, where an iodine source is used, and at least one kind of inert separating material is in contact with the surface of the receiving metal.
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Pulsed coaxial thermal plasma sprayer
John H. W. Lau,C. James Margerum +1 more
TL;DR: In this paper, an elongated conductive tube is used for thermal spraying powdered material onto a substrate, an electrode is positioned coaxially within one end of the tube and a high energy pulse is applied between the electrode and the conductive tubes to produce current sheets which move from one end to the other forming a high temperature and velocity plasma for melting and discharging the powdered material at a high velocity from the other end.
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Method of arc welding and building up of parts
TL;DR: In this article, the duration and magnitude of the pulses are given which relate to the control of certain stated welding characteristics such as weld penetration, rate of melting of the electrodes and metal transfer drop size.