What Is Exothermic Welding? Exothermic welding, also known as exothermic bonding, thermite welding (TW), and thermit welding, is a welding process that employs molten metal to permanently join the conductors. Exothermic welding is a process used for joining similar metals, such as copper

What is Direct Numerical Control? Direct numerical control (DNC), also known as distributed numerical control (also DNC), is a common manufacturing term for networking CNC machine tools. On some CNC machine controllers, the available memory is too small to contain the machining program (for

What is forging? Forging is a manufacturing process involving the shaping of metal through hammering, pressing, or rolling. These compressive forces are delivered with a hammer or die. Forging is often categorized according to the temperature at which it is performed cold, warm, or hot forgi

What is Jig Boring Machine? The jig borer is a type of machine tool invented at the end of World War I to enable the quick and precise location of hole centers. It was invented independently in Switzerland and the United States. It resembles a specialized species of milling machine that p

What is Aluminum Machining? Machining is a subtractive manufacturing process, meaning it removes material from a workpiece to create the desired part or product. It is highly versatile, accommodating a wide range of metal and non-metal substrates. One of the most common materials used in mac

What Is Honing? Honing is an abrasive machining process that produces a precision surface on a metal workpiece by scrubbing an abrasive grinding stone or grinding wheel against it along a controlled path. Honing is primarily used to improve the geometric form of a surface, but can also impro

What is Chip formation? Chip formation is part of the process of cutting materials by mechanical means, using tools such as saws, lathes, and milling cutters. An understanding of the theory and engineering of this formation is an important part of the development of such machines and their c

What are Power Hammers? Power hammers are mechanical forging hammers that use an electrical power source or steam to raise the hammer preparatory to striking and accelerate it onto the work being hammered. Also called “Open Die Power Forging Hammers.” They have been used by blacksmiths, blad

What is Gas Welding? Gas welding is a type of liquid state welding process in which fuel gas is burned to produce heat. This heat is also used to melt the interface of the welded plates that are held together to form the joint. Oxyacetylene gas is mainly used as fuel gas in this process.

What is Resistance Welding? Resistance welding is the joining of metals by applying pressure and passing current for a length of time through the metal area which is to be joined. The key advantage of resistance welding is that no other materials are needed to create the bond, which makes th

What is Laser Welding? Laser beam welding (LBW) is a welding technique used to join pieces of metal or thermoplastics through the use of a laser. The beam provides a concentrated heat source, allowing for narrow, deep welds and high welding rates. It is based on keyhole or penetration mode w

What is Rolling? In metalworking, rolling is a metal forming process in which metal stock is passed through one or more pairs of rolls to reduce the thickness, to make the thickness uniform, and/or to impart a desired mechanical property. The concept is similar to the rolling of dough. Ro

What is NC Machining? Numerical control (also computer numerical control, and commonly called CNC) is the automated control of machining tools (such as drills, lathes, mills, and 3D printers) by means of a computer. A CNC machine processes a piece of material (metal, plastic, wood, cerami

What is Sine Bar? A sine bar consists of a hardened, precision ground body with two precision ground cylinders fixed at the ends. The distance between the centers of the cylinders is precisely controlled, and the top of the bar is parallel to a line through the centers of the two rollers.

In mechanical engineering, tolerances set the allowable deviation from assigned dimensions. The use of tolerances helps to ensure that the final product is readily usable, especially if it is a part of a larger assembly. Not setting a tolerance in a critical area may render the part unusable

What is Extrusion? Extrusion is a process used to create objects of a fixed cross-sectional profile by pushing material through a die of the desired cross-section. Its two main advantages over other manufacturing processes are its ability to create very complex cross-sections; and to work ma

What is Electron Beam Welding? Electron-beam welding (EBW) is a fusion welding process in which a beam of high-velocity electrons is applied to two materials to be joined. The workpieces melt and flow together as the kinetic energy of the electrons is transformed into heat upon impact. EBW i

What is Molding Sand? Molding sand, also known as foundry sand, is sand that when moistened and compressed or oiled or heated tends to pack well and hold its shape. It is used in the process of sand casting for preparing the mold cavity. The principal raw material used in molding is moldi

Manufacturing companies use a variety of processes to remove unwanted material from workpieces. Some of these processes are relatively simple, such as cutting and drilling. Others, however, are more complex. Abrasive jet machining falls under the latter category. It involves blasting a workp

What is Chemical Machining? Chemical Machining is the clean removal of metal from pre-described areas without altering the integrity or properties of the metal by means of a photochemical process. This process is primarily used in creating small thin metal parts of the complex design with no