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Showing posts with the label Mechanical welding

Magnetically Impelled Arc Butt Welding Principles

Magnetically impelled arc butt (MIAB) welding (sometimes referred to as rotating arc welding) is a rapid, clean, and reliable arc welding process that employs forging to produce the finished weld. As such, it is classified as an electric arc welding process since that is the energy source for producing melting or fusion, even though pressure from forging is needed to complete the weld. It is

Gas Tungsten Arc Welding (GTAW)-TIG welding operations

Gas-tungsten arc welding (GTAW) uses a permanent, non-consumable tungsten electrode to create an arc to a workpiece. This electrode is shielded by an inert gas, such as argon or helium (or a mixture of the two), to prevent electrode degradation; hence the older, common names tungsten-inert gas (TIG) and heli-arc welding. As shown in Figure below, current from the power supply is passed to the

Aluminothemic Welding or Thermit Welding Principles

Aluminotherrnic welding is commonly known as Thermit welding. As a subset, these processes use the heat from highly exothermic chemical reactions of solid, particulate materials (or, occasionally, solid particles and a gas) to produce melting and joining, also called coalescence, between metals. Most often, the reactants employed are oxides with low heats of formation and metallic reducing

Miller TIG Welder - Dynasty Series Review and Classification

Miller Welders are one of the most famous manufacturers of TIG welding equipment. Performing TIG welding perfectly is an art. And for a clean, successful and accurate TIG weld we need efficient welders and efficient welding machine. Miller TIG welder always comes handy in achieving the desired weld. Miller manufactures two types TIG of welding equipment AC/DC all type metal welder (including

Different Miller TIG Welder Models

Welding is an art. There are different types of welding methods. TIG or Tungsten Inert Gas Welding is technique for great welded joints. TIG or Gas Metal Arc Welding (GMAW) needs some great craftsmanship to master. And for this reason we need some decent welding machine from a renowned company. Miller TIG Welder is great when it comes to weld an accurate and clean weld. Please Read : Miller

Miller BOBCAT 250 EFI Engine Drive Welder / Generator Review

Miller BOBCAT 250 EFI Rugged welder / generator is a very good equipment for Stick as well as Flux-Cored Welding. It can be used for construction and maintenance /repair operations. It is quitter. There is improvement on the sound level. So there is significant improvement in the jobsite communication as a result a safer and more efficient working environment is guaranteed. Miller bobcat 250

TIG Welding Basics

The History of TIG Welding Russel Meredith applied for a patent for TIG or GTAW in 1941. He is most credible for the invention of TIG welding. The main application of TIG or GTAW is found in effective welding of light aircraft. MIG welding of GMAW was invented before TIG welding but light aircrfat welding needed more reliable welding as well as more fusion power and TIG welding is very

Types Welding Electrodes explained – Non consumable-Consumable electrodes

The piece of wire or rod used to carry current for welding is known as an electrode or welding electrode. It may or may not have flux covering. The electrode produces arc at one end and other end is gripped by a electrode holder. In this article we will discuss the classification of welding electrode as well as explain different welding electrodes types. Please read about: Different types of

Advantages of TIG Aluminium Welding

Gas Metal Arc Welding (GMAW) and Gas Tungsten Arc Welding (GTAW) are suitable for aluminum welding. Aluminum alloy castings need the same technique applied to aluminum sheets and many different wrought products. Many castings are vulnerable to thermal strains because of delicate designs and varying cross sectional areas. Sometimes aluminum alloy castings need heat treatments before welding. TIG

Different Types of Welding Defects

In this article we will be - Identifying common welding defects Preventing and fixing problems with your welds If I could wave my magic filler rod and make it so that all your welds would be strong, clean, and sharp-looking, I’d certainly do it. But the last time I went to the welding supply shop and asked to buy a magic filler rod, they looked at me like I was nuts, so for now you just have to

Resistance Projection Welding (RPW) Advantages and Disadvantages

Working Principle of Resistance Projection Welding (RPW) In resistance projection welding (RPW), small projections are formed on one or both pieces of the base metal to obtain contact at a point which localize the current flow and concentrate the heat. Under pressure, the heated and softened projections collapse and a weld is formed. Projection on the upper component is pressed against the

Resistance Spot Welding (RSW) Working Principle and Advantages-disadvantages

Resistance Spot Welding (RSW) Working Principle Resistance Spot welding is comparatively modern welding process. It came in to the field of welding in between years 1900 - 1905. It is a most widely used resistance welding method. The main purpose of resistance spot welding method is to join two to four light gauge overlapping metal sheets (which can have thickness up to 3 mm) . At first

Resistance Seam Welding (RSEW) Advantages and Disadvantages

Resistance Seam Welding (RSEW) Working Principles The Resistance Seam Welding (RSEW) is very much similar to the Spot Welding (RSW) but here circular rotating electrodes are used. And here we get continuous weld which is air-tight (If the process is perfect). The seam-welding form of the resistance process is a series of overlapping welds. Two or more sheets of base metal are usually passed

Mild steel - Properties of Mild Steel (Mechanical Properties)

Mild steel is the most commonly used steel. It is used in the industries as well in the different everyday objects we use. Even the pans and spoons of the kitchen are sometimes made of mild steel. The main target of this article is to discuss about different mild steel properties. The mild steel is very important in the manufacturing of metal items. Almost 90% steel products of the world is made

Submerged Arc Welding (SAW) Principle and Uses

Submerged Arc Welding or SAW is one of the most occurring arc welding process. It needs a electrode which may be solid of tubular. The electrode should be used in a continuous approach. It should be fed continuously. Ohhh ... for your kind information tubular electrode is the one which is flux shielded. The main feature of this welding is that – The weld and the arc area is protected from

Gas Tungsten Arc Welding (GTAW) or Tungsten Inert Gas (TIG) Welding

Gas tungsten arc welding or GTAW is the same as tungsten inert gas or TIG welding. It is also an arc welding process. Here a non-consumable electrode is used. And most importantly - the electrode is made of tungsten. And this electrode helps to produce the weld. The weld area is protected from atmospheric contamination or oxidation by usually an inert gas. This shielding gas is generally

Flux shielded metal arc welding process principle

In the flux shielded metal arc welding process coalescence is produced from the electric arc. Here the electric arc is produced between the workpiece and the electrode. Here is to mention that the electrode is coated by flux to prevent oxide formation. In other other words the coating prevents contamination from the environment. This coating also helps in performing stability and weld metal

Advantages and Disadvantages of Submerged Arc Welding

Advantages of Submerged Arc Welding 1. Molten flux provides very suitable conditions for high current to flow. Great intensities of heat can be generated and kept concentrated to weld thicker sections with deep penetrations. 2. Because of high heat concentration, considerably higher welding speeds can be caused. 3. Because of high heat concentration and high welding speeds weld distortion is

Gas Metal Arc Welding (GMAW) or MIG Welding

Gas Metal Arc Welding is generally known as MIG (Metal Inert Gas) welding. Metal Inert Gas (MIG) welding is a commonly used high deposition rate welding process. Wire is continuously supplied from a spool. MIG welding is known to as a semiautomatic welding process. Principle of Operation Gas and water flow are checked again and again before catching the fire (igniting). Proper