The corner joint welding is used to join two members that are located at approximately right angle to each other in the form of a ‘L’. It is an easy to assemble joint, the edge-preparation for this joint is quite uncomplicated, and it can be used to produce joints in thin as well as thick … Read more
It is important to know different types of joints in welding, so that one can choose the right kind of joint for an application. In this article, we shall see in detail about ‘T’ joint welding, the kinds of edge preparation in welding of such joints, and some of the difficulties associated in welding of tee joints. … Read more
Magnesium is a very light weight metal. It has good machinability and corrosion resistance. When alloyed with small quantities of other metals such as aluminum, manganese, zinc, zirconium, etc., its’ properties can be further improved to sit a variety of applications. It also has a very low melting point. However, magnesium is a very reactive … Read more
Welding stresses are an unavoidable feature of any welding. Stresses inside a weldment may result in many undesirable consequences such as distortion, buckling, warping, lamellar tearing, cracking, brittle fracture, fatigue fracture etc. When weld metal is added to a joint, it is akin to cast metal. When the weld metal cools, it contracts. This is … 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