Welding Electrical Circuit

In order to understand about the polarity in an arc welding circuit, it is first important to understand the construction of the arc welding circuit. This article discusses a few terms used in any electrical circuit such as EMF, current, and resistance. The later part of the article equates the welding electrical circuit to ordinary … Read more

AC Welding

This article discusses a few aspects related to welding with alternating current, that is – AC welding. The article begins with an introduction to alternating current, followed by features of arc welding with alternating current. Features of Alternating Current Alternating current, as the name suggests, alternates between a positive value and negative value, according to … Read more

Can Your Welding Machine TIG Weld Aluminum?

A considerable number of people ask about welding machine requirements in order to TIG weld aluminum with direct current. TIG weld Aluminum with Direct Current Electrode Positive (DCEP) or DC(+) Can you TIG weld aluminum without AC and a High-Frequency box? Yes, you can actually weld aluminum with a low-cost DC power supply. It doesn’t make it any … Read more

How to TIG Weld Stainless Steel Effectively: Preventing Carbide Precipitation

In order to effectively weld stainless steel with tungsten inert gas welding process, it is important to consider carbide precipitation. TIG Weld Stainless Steel : Carbide Precipitation What is Carbide Precipitation? Carbide precipitation occurs when the chrome and carbon in 300 series stainless steel are drawn out of the material and react with the atmosphere. It occurs … Read more

MIG Welding Advantages

Mas Metal Arc Welding (GMAW), or MIG welding, offers several advantages over other conventional processes such as shielded metal arc welding (SMAW), gas tungsten arc welding (GTAW), etc. Some of these advantages are as follows: The main advantage of metal inert gas welding or MIG welding is the high rate of weld metal deposition as compared to SMAW … Read more

Arc Welding With Constant Voltage

In welding – besides the current current power source, the second type of power source is the constant voltage (CV) machine or the constant potential (CP) machine. It has a relatively flat volt-ampere characteristic curve. In this article we shall discuss about arc welding with constant voltage. Features Of A Constant Voltage Machine The figure below shows … Read more

Wires For GMAW Welding

Electrodes used for gas metal arc welding process (or MIG Welding) are smaller than those used for other welding processes. This is because of the high current and speed at which the welding filler material is introduced into the weld puddle. The MIG welding wire comes in various sizes, and are available for most of … Read more

Arc Welding With Constant Current

The power source is the most important part of the arc welding equipment. In all arc welding processes, two kinds of power sources are generally used, from a voltage-ampere output characteristics point of view.    One is constant current type, the second is constant voltage type. This article details the constant current type power sources in … Read more

Arc Welding Aluminum: How to Stick Weld Aluminum

When aluminum is welded with shielded metal-arc welding (SMAW) process, the stick electrodes are heavy coated. The flux does the function of chemically reacting with the aluminium oxide layer, and removing it. Besides this, the flux also performs the function of shielding the arc from atmospheric gases, and forms a slag over the completed weld. The … Read more