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

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

Casting is a very common manufacturing process to produce metal parts. It creates molds also called casting patterns where the manufacturers pour the molten metal next, and metal parts are finished after the cooling of shaped metal materials. During the casting process, the casting pattern i

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 Die in Manufacturing? A die is a specialized machine tool used in manufacturing industries to cut and/or form material to a desired shape or profile. Stamping dies are used with a press, as opposed to drawing dies (used in the manufacture of wire) and casting dies (used in molding) w

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 Protractor? A protractor is a measuring instrument, typically made of transparent plastic or glass, for measuring angles. Some protractors are simple half-discs. More advanced protractors, such as the bevel protractor, have one or two swinging arms, which can be used to help measure

Anodizing is an excellent aluminum finish till it is damaged. It is not an easy task to remove the old layer and polish it. It is an effective method to make a weather-resistant surface, and this layer will last for a long time and prevent tarnishing. But you have to replace and polish a surfac

What is Brazing? Brazing is a metal-joining process in which two or more metal items are joined together by melting and flowing a filler metal into the joint, with the filler metal having a lower melting point than the adjoining metal. Brazing differs from welding in that it does not involve

What is Gas Welding? Gas welding is a type of liquid state welding process in which fuel gases burn to generate heat. This heat is further used to melt interface surfaces of welding plates which are held together to form a joint. In this process, mostly oxy-acetylene gas is used as fuel gas.

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

Jigs or fixtures? The two terms are easy to confuse. You’ll often find them paired together and despite sharing similar functions, the two are not interchangeable. Let’s learn the subtle differences between these manufacturing tools by examining how they are used to improve manufacturing qualit

What is Electrical Discharge Machining (EDM)? Electrical discharge machining (EDM) is a non-traditional machining process based on removing material from a part by means of a series of repeated electrical discharges between tools, called electrodes, and the part being machined in the presenc