The difference between hot metal and cold metal stamping

The metal stamping process includes cold metal and hot metal stamping, each presenting different features. It is essential to understand the difference between hot metal and cold metal stamping processes before you decide which operation you need for your part.

The metal stamping process

First of all, let’s take an overall look at the metal stamping process. With metal stamping, the sheet metal is transformed into different shapes using dies and stamping presses. It is commonly used by industries that need to produce a high volume of identical metal components as it is a low-cost and high-speed manufacturing process. The industries use three different metal stamping presses, including mechanical, hydraulic, and mechanical servo. Metal stamping offers two different approaches; hot metal stamping and cold metal stamping. These two processes are further divided into the progressive die, transfer-die, four-slide, and fine blanking stamping. Now that you have a general understanding of metal stamping let’s review hot metal stamping and cold metal stamping.

Hot metal stamping

Hot metal stamping involves the heating of steel blanks to a point when they can be formed. The desired shape is given to these blanks using special dies. The material is then cooled rapidly to lock in the design of the part. It is a process that is best suited for creating lightweight pieces. It is an expensive process as compared to the cold metal stamping process and does not allow for the reforming of a part.

Cold metal stamping

Instead of utilizing heat to shape the part, cold metal stamping uses intense pressure. As compared to hot metal stamping, it is a faster and less costly manufacturing process. It is suitable for a variety of materials. However, it may cause warping in your part. This issue is not a concern in hot metal stamping as it offers high tensile strength and stress resistance.

The process you choose depends on the requirement of your desired product. You must consider the features of both these techniques before you make your final decision. Since 1948, Bopp Busch has worked to meet the exact specifications and requirements of our customers. To learn more about Bopp Busch and our capabilities, contact us today.