by Graham Fry | Feb 27, 2018 | Articles, Job Knowledge, Welding
Introduction When welding procedures or welding performances (welders) are qualified, test pieces are prepared using a specific combination of parent material and consumables. To reduce the number of welding procedures to be qualified for production applications,...
by Graham Fry | Feb 27, 2018 | Articles, Job Knowledge, Welding
Induction heating is the process of heating an electrically conducting object (usually a metal) by electromagnetic induction, through heat generated in the object by eddy currents. An induction heater consists of an electromagnet, and an electronic oscillator that...
by Graham Fry | Nov 27, 2017 | Arc Welding, Articles, Welding
Information and Guidance to FCAW Flux core arc welding (FCAW) was introduced in the 1950’s as an alternative to shielded metal arc welding (SMAW). The advantage of FCAW over SMAW is that the use of the stick electrodes used in SMAW is unnecessary. This helped FCAW to...
by Graham Fry | Nov 27, 2017 | Articles, Job Knowledge, Welding
Shielded metal arc welding (SMAW), also known as manual metal arc welding (MMA or MMAW), or regularly as stick welding is a manual arc welding process that uses a consumable electrode covered with a flux to produce the weld. An electric current, in the form of either...
by Graham Fry | Sep 25, 2017 | Job Knowledge, Welding
Types of electrodes and their compositions Many types of manual metal arc (MMA) electrodes are available on the market. Depending on the main constituent of their flux, they are grouped into three categories: cellulosic, rutile and basic. All electrodes consist of a...
by Graham Fry | Jan 1, 2017 | Job Knowledge, Welding
Distortion – Types and causes This article covers several key issues on distortion in arc welded fabrications, especially basic types of and factors affecting the degree of distortion. What causes distortion? Because welding involves highly localised heating of...
