Metals, in industries, like manufacturing, construction, aircraft and automotive play a critical role. A highly ductile form of metal is needed by these sectors for manufacturing of various necessary units like cars, transport and other important units. For this reason, forging has become an important process in extrusion of metals.
Forging is a technique which is done for forming or molding of metals. It's done through various techniques that are different for different metals and are used according to their temperature. Different lubricants are used for performing this process and commonest of them are MoS2, graphite, synthetics, and glass. Glass lubricants for forging process are used as they are very brittle even at higher temperatures. So, for this reason these glass lubricants are used in hot forging process which is carried at a temperature of 1300 degrees Celsius and is later reduced to 750 degrees Celsius.
Throughout this method, a forged glass coating is formed over metals which are water based and lead free. This glass coating is inculcated with high lubrication and heat insulation characteristics. So, they're used for forging of some certain alloys of metals like titanium, stainless steel, tungsten, and nickel. Some of the advantages that make this method crucial as a forging lubricant for aircraft industry are as follows:
- This process prevents oxidization of metals that has undergone forged process. So, it helps the structures made from these metals to remain in its initial shape and prevents their reaction with oxygen.
- This is an excellent lubricant as it takes the form of plastic at higher temperatures.
- Most significantly forged glass is the only lubricant that can bear so much high temperature without losing its scientific characteristics.
A common forging technique used in aerospace industry is seamless ring rolling forging. In this technique a hole is punched in thick, piece of metal which makes its shape like a donut. After this those pieces are drawn under rolling and squeezing process into a ring. The diameter of ring differs based on the quantity of metal to be forged.
These seamless rings rollers could be either flat or cylindrical in shape. The height of these configurations differs between half inches to 9 feet. All this are dependent on the instruments utilized and according to it wall thickness and height are proportioned. The ordinary ratio range is 1:16 at the bottom and 16:1 at the top, but this can vary in case of special processing's.
Forging method is vital for rising ductility and tangential strength of metals that make them suitable for parts that are resistant to pressure like engines for aircrafts, couplings, gears, rotor pacers, cases & sealed discs, pressure vessels, wheel bearings, valve bodies & flanges.




