Everything you need to know about metal stamping

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Since Die Center, company specializing in industrial assemblieswe want to share with you all the keys about metal stamping and their types so that you can choose the one that best suits your needs and objectives.

What is metal stamping?

Metal stamping is a technique that allows manufacture or shape metal parts from the transformation of a sheet of metal. That is, it is the process by which metal parts are molded in order to give them the necessary shape to later be used in different sectors and industries.

Furthermore, this technique is highly effective for the production of parts in series saving time and resources and without losing quality.

To stamp the metals and give them the desired shape, the piece is subjected to a great force or pressure with the help of two molds and to apply this pressure are used hydraulic or eccentric presses, which are fundamental machines in any process or operation that requires exerting pressure on the sheets, such as stamping or cutting metal sheets.

Regarding the differences between both types of presses, it should be noted that the presses hydraulic have a less complex mechanism but a higher pressing power so they are ideal for working very thick and resistant materials while the eccentric presses They are very useful precisely to stamp and cut metal sheets thanks to its two main elements: punch and die. With the punch the desired shape is given to the sheet and with the die it is cut.

However, apart from the press used, in metal stamping it charges temperature is especially important. Since subjecting the material to work at a specific temperature is what will allow it to become malleable and moldable. Hence, there are two major types of metal stamping: hot stamping and cold stamping.

Types of metal stamping

As we mentioned, depending on the temperature to which the materials are subjected, we can distinguish between two types of metal stamping: if the temperature applied is greater than that of recrystallization we will talk about hot stamping and, on the contrary, if it is lower, we will talk about stamping in cold.

Here it is important to note that the recrystallization temperature It is not a single or fixed temperature, but rather depends on the characteristics of each metal, as, for example, its melting temperature.

Therefore, the hot stamping consists in raising the temperature of the metal above its recrystallization temperature until it becomes malleable and allows us to print the desired shape. While in the cold stamping the material one works lower temperature to that of recrystallization.

But how are they different? Roughly speaking, it could be said that the difference between cold or hot stamping lies in the final score. Since the hot stamping allows to form pieces of lower dimensional accuracy and instead the stamping cold is capable of altering the properties of the metal (elasticity and ductility) giving rise to a stronger, lighter and more precise end piece.

In Die Center we are specialists in cold metal stamping. Do not doubt contact with us. We have the best professionals and machinery and our processes are backed by the ISO 9001 quality certificate.

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