Chapter One – What is Die Stamping?
Die stamping is a cold forming process that takes a sheet of metal, referred to as a blank or tool steel, and cuts and shapes it using a single or series of dies to create a desired shape or profile. The force that is applied to the blank modifies and changes its geometry, which creates stress that makes the workpiece suitable for bending or shaping into complex forms. The parts produced can be exceptionally small or extremely large depending on the application.To get more news about Stamping steel parts, you can visit tenral.com official website.
The die stamping process, also known as pressing, includes a number of techniques such as punching, blanking, piercing, coining, and several other operations. Designs are required to be precise so that each punch produces optimal quality.
The dies in die stamping are specialized tools that have been customized to create a specific design, which can be very simple common items or complex computer components. Dies can be designed to perform a single function or be part of a series of functions that happen in stages.Stamping dies perform two functions – cutting or forming with some dies doing a combination of those functions. Each type of operation is designed to cause separation or plasticizing, giving it the ability to be shaped like plastic.
Bending creates shapes that are similar to a L, U, or V. It is a plasticizing deformation that stresses the yield level but below tensile strength over a single axis.
Flanging is bending the workpiece along a curved axis. The two types are stretching and shrinking. Tension and compression are common in the flanging process, which is determined by the length of the tab. It can be produce curves or corners and requires a simple downward movement of the press.
Drawing is a metal flow process that displaces of the surface of the workpiece with another shape with the same surface area. The reshaped metal maintains its thickness. The direction of drawing is critical since it affects how the part can move, be cut, and ejected.
The surface area of the workpiece is increased by tension and thinning. It produces a very smooth surface for painting and finishing. Dies use high pressure binding to stop the flow of the metal. In most cases, stretched metals are dent resistant.
Ironing is like coining. Its purpose is to reduce the wall thickness of the workpiece by squeezing it at a depth that is 30% of the workpiece’s thickness. Ironing unifies wall thickness and increases its drawn vessel length.
Below is a description of cutting dies: Cutting is when a piece of metal is separated by applying force to cause the metal to fail and is referred to as shearing.
Blanking
Blanking removes a portion of a metal sheet along a specific contour line or shape. In very simple terms, it is cutting away one part of a sheet from another. The cutaway part is the workpiece while the remainder is scrap as seen in this diagram.
Piercing is similar to blanking. The difference between the two is that the piece punched out in blanking is the actual part. With piercing, the piece that is removed is scrap and what remains is the part. The punch dimensions determine the size of the removed part and the remaining hole. The diagram below is a simple presentation of the process.
