In GTAW (Gas Tungsten Arc Welding) also known as TIG welding (Tungsten Inert Gas welding), a non consumable electrode (made up of Tungsten) is used. Tungsten is preferred due to high its high melting point (approximately 3,4100C) and high hardness. Either pure tungsten is used as electrode or it can be alloyed with other elements. […]
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This article is about different welding test positions used in Plate Welding, Pipe Welding & Stud Welding. Plate Welding Test Positions In plate welding, we have four different positions namely; Flat position (1G or 1F) Horizontal Position (2G or 2F) Vertical Position (3G or 3F) Overhead Position (4G or 4F) Note: 1. G Designates groove
What is Steel? Steel is an alloy of Iron (the concept of alloy is explained below) and the principal or main alloying element is Carbon. Hence, The main or base element in steel is: Iron Main (principal) alloying element in steel is: Carbon Other alloying elements in steel are: Manganese, Silicon, Nickel, Chromium,
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GMAW (MIG welding) electrodes are designated by some letters and numbers such as ER70S-6, ER90S-6 and E308L etc. I will explain the meaning of these symbols: FOR CARBON STEEL OR MILD STEEL (SUCH AS ER70S-6 OR ER70S-3) Where, ER – Designates electrode or filler rod XX – Designates the minimum tensile strength of the deposited
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MIG welding or Metal Inert Gas Welding is also known as Gas Metal Arc Welding (GMAW). In MIG welding process, consumable electrode is used in the form of filler wire and a shielding gas such as Argon, Helium, Carbon dioxide or a mixture of these gases are used. These gases shield the molten weld pool
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Shielded Metal Arc Welding (SMAW) is also known as Manual Metal Arc Welding (MMAW) or stick welding. It is a manual arc welding process that uses a consumable electrode (covered with flux). The electrode is connected with one terminal of the power source and the work is connected with the other terminal of the power
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Shielded Metal Arc Welding (SMAW) electrodes are designated by “E” followed by four (or five) digits for example: E7018, E6013 or E10018. I will explain the meaning of these symbols: IF THE ELECTRODE HAS “E” FOLLOWED BY FOUR DIGITS (FOR EX. E7018) E – Stands for electrode XX – First two digits designates the minimum
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Welding is a process of permanently joining two parts (permanent fusion) by the application of heat and (or) pressure. Filler metal may be added to the joint depending on the welding process and the type of joint. The American Welding Society (AWS) has recognized more than 50 different types of welding processes, some of them are
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Dye Penetrant Test (DPT) is one of the most inexpensive non-destructive test (NDT) methods, used to check the surface irregularities of any component. This test method is popular by many names, which are as follows; Liquid Penetrant Inspection (LPI) Liquid Penetrant testing or Liquid Penetrant test (LPT) Penetrant Test or Penetrant Testing (PT) The liquid
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Welder Performance Qualification (WPQ) also known as Welder Qualification Test (WQT) or Performance Qualification is a very basic but one of the most important steps before assigning a job to the welder. The welder qualification test (WQT) is performed to determine the skill of a welder, in other words, we can say that the welder
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