What are the types and differences of stamping processes for metal hardware?

Stamping is a forming method that relies on punches and dies to apply pressure to sheets, strips, pipes and profiles to deform or separate them, thereby obtaining work pieces of the desired shape and size. The stamping and drawing process should be combined with the actual situation to select a reasonable process plan. There are different classification methods for stamping according to different process conditions. The following is a brief introduction to the differences between various stamping processes:

The difference between cold stamping and hot stamping

According to the temperature during stamping, there are two methods: cold stamping and hot stamping. This depends on the strength, plasticity, thickness, degree of deformation and equipment capacity of the material, etc., and the original heat treatment state and end-use conditions of the material should be considered.

Cold stamping is a process of manufacturing metal workpieces at room temperature. The advantages are that there is no need for heating, no oxide scale, good surface quality and low cost. The disadvantage is that there is a hardening phenomenon, and in severe cases, the metal loses its ability to further deform. Cold stamping requires that the thickness of the blank be uniform, the fluctuation range is small, and the surface is smooth without spots and scratches

Hot stamping is a stamping method that heats metal to a certain temperature range. The advantage is that it can eliminate internal stress to avoid hardening, increase the plasticity of the material, reduce the deformation resistance, and reduce the power consumption of the equipment.

The difference between copper and aluminum stamping and steel stamping

Commonly used steel sheets are carbon steel and stainless steel, and non-ferrous metal sheets include aluminum, copper and their alloys. They have high plasticity and low deformation resistance and are suitable for cold stamping.

Copper, aluminum and its alloys are widely used as components of electrical equipment because of their good ductility and excellent electrical conductivity.

The stamping process of carbon steel and stainless steel is often used to manufacture equipment shells, structural parts, boxes, etc., but due to their strong rigidity, stamping oil is usually used to improve the process.

The difference between simple stamping and continuous stamping

A die is a tool that separates or deforms the sheet metal, and it consists of an upper die and a lower die. According to the structure of the die, the process can basically be divided into two types: simple stamping and continuous stamping.

Simple stamping is a stamping process in which only one process is completed in one stroke of the punch, that is, a simple die for blanking or punching.

Continuous stamping means that in one stroke of the punching machine, several stamping processes are simultaneously completed on different parts of the mold, and the feeding distance of each time is controlled by the stopper pin.