Filler metal

About: Filler metal is a research topic. Over the lifetime, 11152 publications have been published within this topic receiving 86590 citations.

Pipe welding and heat-treating process and means

Abstract: This invention relates to a method or process of joining metallic members together, such as pipes, rails and the like, and involves, in most cases, steps of preheating, arc welding and normalizing or stress-relieving. In welding certain structures and materials, stresses are set up therein...

Prediction and optimization of weld bead geometry in gas metal arc welding process using RSM and fmincon

Abstract: Cladding is a surface modification process in which a specially designed alloy is surface welded in order to enhance corrosion resistant properties. Common cladding techniques include Gas Tungsten Arc Welding (GTAW), submerged arc welding (SAW) and gas metal arc welding (GMAW). Because of high reliability, easiness in operation, high penetration good surface finish and high productivity gas metal arc welding became a natural choice for fabrication industries. This paper presents central composite rotatable design with full replication techniques to predict four critical dimensions of bead geometry. The second order regression method was developed to study the correlations. The developed models have been checked for adequacy and significance. The main and interaction effects of process variables and bead geometry were presented in graphical form. Using fmincon function the process parameters were optimized. Key words: Gas metal arc welding (GMAW), weld bead geometry, mathematical model.

Welding and Cutting

Abstract: The article contains sections titled: 1. Definitions 2. Fundamental Principles 2.1. Weldability 2.2. Details of Welding and Cutting Processes 2.3. Influence of Physical and Chemical Properties 2.3.1. Material Properties 2.3.2. Design of Welded Components 3. Welding Processes 3.1. Fusion Welding 3.1.1. Manual Gas Welding (Autogenic Welding) 3.1.2. Arc Welding 3.1.3. Electroslag Welding 3.1.4. Electron Beam Welding 3.1.5. Laser Beam Welding 3.1.6. Aluminothermic Welding 3.2. Pressure Welding 3.2.1. Resistance Welding 3.2.2. Arc Pressure Welding 3.2.3. Induction Welding 3.3. Special Welding Processes 4. Fusion Cutting Processes 4.1. Flame Cutting (Autogenic Cutting) 4.2. Plasma Cutting 4.3. Laser Cutting 5. Welding of Various Materials 5.1. Plain Carbon Steels 5.2. Alloy Steels 5.3. Cast Steel 5.4. Cast Iron 5.5. Nickel and its Alloys 5.6. Copper and its Alloys 5.7. Aluminum and its Alloys 5.8. Titanium and its Alloys 5.9. Thermoplastic Materials 6. Testing and Control Methods 7. Health Protection and Safety 7.1. Health Protection 7.2. Safety 8. Economic Importance

Intermetallic alloy welding wires and method for fabricating the same

Abstract: Welding wires for welding together intermetallic alloys of nickel aluminides, nickel-iron aluminides, iron aluminides, or titanium aluminides, and preferably including additional alloying constituents are fabricated as two-component, clad structures in which one component contains the primary alloying constituent(s) except for aluminum and the other component contains the aluminum constituent. This two-component approach for fabricating the welding wire overcomes the difficulties associated with mechanically forming welding wires from intermetallic alloys which possess high strength and limited ductilities at elevated temperatures normally employed in conventional metal working processes. The composition of the clad welding wires is readily tailored so that the welding wire composition when melted will form an alloy defined by the weld deposit which substantially corresponds to the composition of the intermetallic alloy being joined.

Weld/brazing of light metal alloys

Abstract: Method of resistance brazing of light metal alloys to form a corrosion resistant structural assembly, comprising: positioning a patch (thickness of about 0.05-0.25 mm and an aspect ratio of about one) of brazing filler metal between and in contact with superimposed light metal (i.e., aluminum, titanium) alloy structural workpieces to define a joining spot, said filler metal consisting of 7-13% silicon, substantial absence of magnesium and copper for aluminum workpieces, and the balance said light metal; while applying high pressure to force the workpieces together at the joining spot to achieve a structural joint, resistively heating the patch to melting without softening the workpieces, except at interfaces with the filler metal, by flowing an electrical current through the patch and aligned portions of the workpieces under ambient conditions and in the absence of flux, the heating and pressure being sufficient to mechanically break up and eliminate any oxides in the workpieces at the joining spot.