An apparatus and method for computerized interactive control, measurement and documentation of are welding utilizing a single power source that facilitates continuous precision welding Operational interactivity between the welding operations and the workpiece operations, in connection with predetermined optimum welding operational parameters, provides contemporaneous feedback of critical welding operational parameters to the welding operator, producing an alarm if welding is attempted outside a first predetermined range of deviation from optimum welding operational parameters and temporarily interrupting power to the welding operation if welding is attempted outside of a second predetermined range of deviation from the optimum welding operation parameters A complete log of the welding operational parameters is stored for subsequent retrieval and display, providing training and evaluation of welding operators as well as verification of compliance with required welding practices and procedures Methods of performing continuous precision welding, facilitating temperbead welding, training and qualifying welders for such operations and verifying practice and procedure compliance are available utilizing the above-described apparatus

Apparatus and method for computerized interactive control, measurement and documentation of arc welding

An article includes turbulation material bonded to a surface of a substrate via a bonding agent, such as a braze alloy. In an embodiment, the turbulation material includes a particulate phase of discrete metal alloy particles having an average particle size within a range of about 125 microns to about 4000 microns. Other embodiments include methods for applying turbulation and articles for forming turbulation.

Article having turbulation and method of providing turbulation on an article

An article made of a nickel-base superalloy having a nil-ductility range from the solidus temperature of the alloy to about 600° F. below the solidus temperature is welded, as for example in the weld repair of surface cracks, by removing foreign matter from the area to be welded, first stress relieving the article, adjusting the temperature of the article to a welding temperature of from about 1800° F. to about 2100° F., welding a preselected area in an inert atmosphere at the welding temperature, and second stress relieving the article. Welding is preferably accomplished by striking an arc in the preselected area so as to locally melt the alloy in the preselected area, providing a filler metal having the same composition as the nickel-based superalloy of the article, and feeding the filler metal into the arc so that the filler metal is melted and fused with the article to form a weldment upon solidification.

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Welding of nickel-base superalloys having a nil-ductility range

A process is provided for welding a nickel or cobalt based superalloy article to minimize cracking by preheating the entire weld area to a maximum ductility temperature range, maintaining such temperature during welding and solidification of the weld, raising the temperature for stress relief of the superalloy, then cooling at a rate effective to minimize gamma prime precipitation.

Welding superalloy articles

A method and system for system for welding a workpiece is disclosed. The workpiece is preheated while the weld is being performed. The preheating is performed fast enough that it can be done on-the fly-immediately in advance of the weld. The preheating is preferably accomplished with an induction heating system. The induction coil is mounted with the welding torch such that as the torch is moved along the weld path, the coil precedes it, preheating the weld path.

Method and apparatus for inductive preheating and welding along a weld path

Apparatus for the deposition welding or the joint welding of a workpiece made of a superalloy by an arc welding process in which the workpiece is supported in a protective-gas container into which is placed a welding electrode and an induction coil for preheating the workpiece. Material of the same type of the workpiece is applied to the surface of the workpiece or to a welding joint thereof by arc welding produced by the welding electrode. The apparatus and associated method are particularly suitable for repairing age-hardened superalloys of engine blades.

Method and apparatus for welding workpieces made of superalloys

Verfahren und vorrichtung zum schweissen von werkstuecken aus superlegierungen

a) Procede et dispositif pour souder des pieces en alliages speciaux, par soudage a l'arc sous gaz protecteur avec prechauffage; b) Procede caracterise en ce qu'on chauffe tout d'abord la piece (7) a une temperature de prechauffage dans la zone d'action thermique du point de soudage (16) par chauffage par induction constituant la source d'energie complementaire puis on applique a la surface de la piece (7) ou a la jonction de soudage, par apport ou introduction, un materiau de meme type par soudage a l'arc.

Birner Wolf

Papers

Method and apparatus for welding workpieces made of superalloys

Verfahren und vorrichtung zum schweissen von werkstuecken aus superlegierungen

Procede et dispositif pour souder des pieces en alliages speciaux, par soudage a l'arc sous gaz protecteur avec prechauffage.