Copper and alloys derived from copper have unique properties that make them suitable for wide-ranging applications in the industry. Especially, the high electrical conductivity of copper makes it suitable for extensive usage in electrical applications. Welding copper is easy if just one understands its behavior. Some copper alloys have good corrosion resistance as well. In … Read more
Cast iron is an alloy of iron and carbon. The carbon content in cast iron varies from 1.7% to 4.5%. In this article, we shall see a few aspects of welding of cast iron. Types Of Cast Iron Gray cast iron is the most widely used type of cast iron. It has a high percentage … Read more
Titanium is a useful metal that is used in a wide variety of applications due to its’ excellent properties. It has low density, has good strength, has a lustrous silvery appearance, and has excellent resistance to corrosion. Welding titanium is considered a difficult prospect; however it can be done by following the requisite cleanliness guidelines. … Read more
Welding of pipes is commonplace. Pipes are used for transporting oil, water, gas, etc. The pressure inside the pipe may range from a vacuum pressure to gage pressure running into several hundreds of pounds per square inch. For such joints, mechanical joints such as rivets, threaded joints, etc. are not adequate for the purpose, hence … Read more
Welding arcs is a source of intense heat that is used to melt the base metal and filler metal to produce a weldment. Arc is where the real action happens, in the course of all arc welding processes. In this article, we shall discuss in brief about the function of welding arcs, and different kind of forces … Read more
Failure of a weld can have serious consequences. A weld failure in the backyard of house may not have much consequences. However, when the weld lies in a large sized pressure retaining equipment, weld failure can cost heavily on life and equipment. Such failures have to be analysed by an expert or a team of … Read more
Resistance welding is the name given to a group of welding processes in which coalescence between two metals is obtained by heat arising out of resistance posed by the work-piece to the flow of current. Pressure is generally applied to secure the joint firmly. The work-piece is a part of the electric circuit, through which … Read more
Flux-cored arc welding is a variation of gas metal arc welding (GMAW). In fact, the only feature that makes it distinct from the GMAW is the flux-cored wire that is used as the filler as well as electrode. As the name suggests, the flux-cored wire is cored with flux. It is a tubular electrode, with a … Read more
Oxyacetylene welding of cast iron is relatively easy if attention is paid to some simple aspects of it. Not just the aspects specific to cast iron, but aspects in general about oxyacetylene welding as well. This article contains some hands-on advice on the subject. The commonly used variety of cast iron is the grey cast iron. If … Read more
Oxyfuel welding is a welding process in which metals are joined by heat of the flame emanating from the tip of an oxyfuel welding torch. The pressure may or may not be applied and filler rod may or may not be used. As the name suggests, any oxy-fuel welding process involves two gases. One is … Read more