What is cold fittings?
Cold fittings are one variant of the metal metal shaping process, which includes the formation or shaping of the metal parts by the process of applying strong localized pressure forces. Cold fittings are done with a metal generally maintained or slightly above the temperature temperature with a temperature always maintained on or below three tenths of the recrystallization temperature of the metal shape. Cold -fitted pressure forces can be applied by hand by hammer or driven sources such as blacksmith machines. In most cases, metal is forced to death in the shape of a finished product or around open templates or preparations. Cold fittings offer several different advantages over fittings processes that include better finish, improved dimensional stability and lower production costs.
Fanging is one of the oldest metal shaping processes that are known to a person. The process of metal fittings includes hitting the workpiece through or to die, template or product forces metal to flow to the desired shape. KoIn general, it is divided into three types of processes based on the temperatures on which the metal is heated in front of the metal. It is hot, warm and cold fittings, with hot and warm processes using the workpiece temperatures in the range of several hundred degrees to more than 2,000 ° Fahrenheit. On the other hand, cold fittings see work steel heated to more than three tenths of the recrystallization temperature.
In many cases cold fittings are performed with steel workpiece at room temperature. This is particularly suitable for the production of small, high -volume pieces such as fasteners, including nails, screws and rivets. The process is therefore attractive as a low -cost fitting method, because the working cycle is eliminated by expensive heating devices. Cold steel parts can be flexed in shape, forced to Impliikression dies manual or driven by drop Hammers or drawn into a shape through a profiled matrix.
Another advantage of the cold fittings process is a high -quality surface made on final products. Cold forged parts require very little treatment after handling, as is the case with hot processes. However, softer metals such as aluminum can undergo secondary heating to relieve or solidify the material. Cold fittings are most often used to produce smaller objects, although the process can be applied to parts weighing several tons. Other advantages of the process include excellent dimensional stability with high death load during fittings and good stress load characteristics in the finished product.