Welding Fabrication World

𝐅𝐞𝐫𝐫𝐢𝐭𝐞 𝐓𝐞𝐬𝐭𝐢𝐧𝐠 𝐨𝐟 𝐒𝐭𝐚𝐢𝐧𝐥𝐞𝐬𝐬 𝐒𝐭𝐞𝐞𝐥𝐬

Ferrite testing, also known as a ferritescope test, is a fast and non-destructive inspection technique used to measure delta ferrite levels in austenitic stainless steel and duplex stainless steel materials. Maintaining the correct ferrite content is crucial for ensuring corrosion resistance, durability, and preventing cracks in the material. Exceeding the maximum allowable ferrite content can […]

METAL JOINING: BRAZING VS WELDING

There are several methods available for joining metals, including welding, brazing and soldering. What is the difference between welding and brazing? What is the difference between brazing and soldering? Let’s explore the distinctions plus comparative advantages as well as common applications. This discussion will deepen your understanding of metal joining and help you identify the

Hardness Testing: Definition, How It Works, Types, and Benefits

Hardness refers to the resistance of a material to deformation, particularly when subjected to various forms of external forces like compression, indentation, scratching, or abrasion. It’s an essential mechanical property that indicates the material’s ability to withstand such forces without undergoing permanent deformation or damage. Hardness is influenced by factors such as the material’s composition,

Guide to Magnetic Particle Inspection (MPI)

Magnetic Particle Inspection (MPI) stands as a crucial nondestructive testing process utilized to detect surface and shallow subsurface discontinuities in ferromagnetic materials. These materials encompass iron, nickel, cobalt, and certain alloys susceptible to magnetization. The method involves establishing a magnetic field within the test object, achieved through direct or indirect magnetization. Direct magnetization passes electric

Submerged Arc Welding (SAW)

Submerged arc welding (SAW) is a proficient welding technique that employs a continuous feed of tubular electrode to fuse two metals by generating heat through the interaction between the electrode and the metal. To shield the arc and molten zone from atmospheric contaminants, the welding process submerges them beneath a protective layer of granular flux.

Effect of Alloying Elements on Steel

Steel, a fundamental material in modern industrial applications, owes its versatility and performance to the careful inclusion of various alloying elements. Alloying elements are introduced to steel to alter its properties, enhancing its strength, durability, corrosion resistance, and other crucial characteristics. Steels are manufactured by combining iron with carbon, a process integral to steelmaking. The

Nomenclature and Components of Butt and Fillet Welds

Welding, a fundamental process in metal fabrication and construction, involves joining metal components through the application of heat and pressure. Two common types of welds, butt and fillet welds, are integral in creating strong, durable joints. Understanding nomenclature and components of Butt and Fillet Welds is crucial for welders and engineers to ensure the integrity

Comparison of Rutile and Cellulosic Electrodes

“Varieties of Electrodes and Their Constituents” There is a wide array of manual metal arc (MMA) electrodes available, grouped into three categories based on their primary flux component: cellulosic, rutile, and basic. These electrodes typically consist of a core wire, usually 2.5–6mm in diameter, coated with flux. The core wire is commonly crafted from low-quality

Avoiding porosity in aluminium welding

Porosity formation within aluminium welding arises from the entrapment of gases in the molten weld pool, unable to escape before solidification. The chief concern is hydrogen, sourced from contaminants like hydrocarbons (e.g., grease, skin oils) or moisture, breaking down within the arc plasma to generate atomic hydrogen. Hydrogen readily dissolves in molten aluminium but exhibits

Gas Metal Arc Welding (GMAW): A Comprehensive Guide

Gas Metal Arc Welding (GMAW), commonly known as MIG (Metal Inert Gas) or MAG (Metal Active Gas) welding, is a versatile and widely used welding process in which an electric arc is established between a consumable wire electrode and the workpiece metal. This arc generates intense heat, causing the workpiece metal to melt and fuse