Hot and Cold Forming Machines

Hot forming machines form metal that has been preheated. Cold forming machines form metal that has not been preheated. There are many types of hot forming machines according to the type of wok they do. Examples include a hot stamp machine or hot stamping machine, hot wire machine, hot foil stamping machine and a hot press machine. In a hot stamp machine or hot stamping machine, the metal is hot worked by localized compressive forces exerted by manual or power hammers, or presses. A hot wire machine is used to draw out sections of a bar stock, reducing diameter and increasing the length. A hot wire machine can also perform the opposite action. A hot foil stamping machine is used to squeeze the metal into very thin foils. A hot press machine employs a slow squeezing action to deform the metal to be formed. Like hot forming machines, there are also several types of cold forming machines. Examples include a cold roll forming machine and a cold heading machine. Sheets, strip, bars, and rods are cold-rolled by a cold roll forming machine to produce products which have smooth surfaces and accurate dimensions. A cold heading machine combines upsetting and extruding operations to form large-head, small-shank parts. Hot forming machines are extensively used for hot working processes as they drastically alter the shape of the metals without causing them to rupture. Cold forming machines are used for cold working processes that are carried out at room temperature.

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