Sheet metal is turned into functional parts and tools for a variety of industries through metal stamping. Recognizing and comprehending the complexity of this part formation method becomes a crucial component of choosing services for part creation because there are practically as many styles as industries that the process covers.
Coins served as the subject of the first metal stamping experiments. According to researchers, the Lydians, who lived in what is now Turkey, invented the first coins around the seventh century B.C. The Lydians made a die and used a large hammer to slice the metal to stamp the coins. Gold and silver were commonly used to make the coins.Before 1550, when a German silversmith by the name of Marx Schwab invented the screw process to stamp coins, this straightforward procedure remained substantially unchanged. To turn the screw press and apply adequate pressure to shape the metal, as many as 12 workers were required.
Steam power was used during the industrial revolution to imprint the desired picture on the coin instead of the manual screw-turning technique. Coins could be imprinted more quickly and with greater efficiency as this technology advanced.Metal stamping, however, wasn't used in industrial settings until the 1890s. Metal stamping was first used by a German bicycle manufacturer to create bicycle components. Metal stamping quickly gained popularity and efficiency as manufacturers discovered how quickly and cheaply it made fabrication possible.Metal stamping is a crucial procedure that is employed in various goods across numerous industries today.
The desired finished result determines the type of stamping that is employed. The three most popular stamping techniques are precision, hot metal, and progressive die.
Tight tolerances are produced in the finished product thanks to precision stamping, which also produces raised images or three-dimensional parts. Precision stamping is quicker since there are fewer material transfers between machines than with other types of stamping.
This stamping technique's high degrees of precision enable the creation of elaborate designs that must closely follow their specifications. Precision stamping can be used on components with length and roundness tolerances of 0.0005 to 0.001 inches and 0.001 to 0.002 inches, respectively. Precision metal stamping is frequently used to create prototypes, electronics, telecommunications equipment, engine parts, and aircraft components.
Micro-precision stamping is one of this procedure's variations. Using this technique, delicate pieces as thin as 0.002 to 0.005 inches can be produced for the electronics or medical industries.
Extreme heat is used during the hot metal stamping process to create metal. Over 1700 degrees Fahrenheit are reached during the heating and quenching of the metal, which is boron steel. A lightweight, high-strength steel component is the end result.One of the main benefits of a hot metal stamped item is its high tensile strength, which, after the process is complete, ranges from around 50 kilopounds per square inch (KSI) to about 200 KSI. Hot stamping additionally enables the simultaneous formation of complicated pieces, reducing the need for welding and other joining techniques. This process also prevents the springback and warping that other high-strength steel-formed parts commonly experience.Unfortunately, cutting the hardened component makes it challenging to trim and cut the post-formation part. For these processes, a strong laser is typically required.You require a variety of tools to execute hot metal stamping, including:
A heating system that can raise the metal's temperature to the required level
A sufficient cooling system
An automatic handling mechanism is needed since the completed item will be too hot to handle at first.
High thermal shock resistance in tooling materials
A press that is hydraulic, servo, and has a dwell time
Of course, your stamping press equipment needs to meet all safety criteria.
In cold stamping, we apply great pressure to mold metal sheets into the desired shape. You often require thicker pieces of metal so that you have more to apply pressure to because pressure, not heat, is the main method used to produce the new shape. Cold stamping is faster than hot stamping. Additionally, you must utilize cold stamping if you need to reformat your part or do out-of-the-box operations like drawings or flanging. Additionally, compared to hot stamping, which only offers the option of boron steel, cold stamping gives you the freedom to create parts from a number of metals. Cold stamping, however, may cause springback, which will cause your part to distort.
Hot stamping prevents this because of its great tensile strength and stress resistance. Additionally, you do not have as easy a time producing lightweight, intricate pieces as you do with hot stamping. Determining which technique is best for you requires understanding the differences between hot stamping and cold stamping. Contact us if you want to find out more about hot vs. cold stamping or if you have any questions!
Metal pieces are passed through several stations that each carry out a different operation on the metal during progressive stamping, also referred to as progressive die stamping. The metal item is nevertheless fastened to a lengthy strip of material throughout these several steps.The finished piece is cut from the metal strip by the final machine.
Progressive die stamping is a great option when choosing manufacturing techniques for long-run processes that demand high volume. Long-lasting dies and little waste are produced by the method.Use transfer die stamping when producing larger items that may require various presses. Only a few minor details of this procedure set it apart from progressive stamping. The component is transferred from machine to machine on a conveyor belt after being separated from the metal strip earlier.