- 21 December 2024
Aluminum stamping is the process of deforming a given workpiece using a stamping press. In the stamping process, the material is cut along the edge between the die and the punch. And the punch and die itself must be made of materials whose hardness far exceeds that of the workpiece.
The process of stamping aluminum, the thickness of which does not exceed 10 millimeters, is usually carried out without preheating. If the thickness of the material is greater, it is recommended to preheat the workpiece. Stamping processes produce blanks with complex contours. The minimum and maximum size depends solely on the equipment used. Normally, an aluminum profile stamping plant is able to make a product with high accuracy. The final accuracy is also determined by the quality of the die. It should be noted that during stamping a high roughness of the cut surface is maintained. However, this can be reduced by using various technological processes, such as accurate stamping of aluminum profiles. Sheet metal stamping techniques are actively used in mechanical engineering, as well as in the aerospace and electronics industries.
Aluminum press shops in Poland offer services for forming three-dimensional products from sheets. This is achieved through significant plastic deformation. Stamping and drawing of sheet metal includes operations not only for bending, but also for drawing materials with a change in their initial thickness. At present, aluminum stamping plants in Poland offer their services equally to domestic manufacturers and to the EU market.
Before drawing stamping, sheet metal is usually punched to obtain a contoured flat surface. In this regard, the average aluminum stamping plant can boast high productivity. Equipped with modern equipment, an aluminum stamping plant is capable of processing up to several hundred parts per minute. Therefore, sheet metal stamping has found active application in mass and mass production in the manufacture of body parts, metal utensils, ammunition.
The process of aluminum stamping with the use of liquid is that the crystallization of the metal takes place under conditions of increased pressure. Thanks to this feature, the heat transfer coefficient and the cooling rate of the parts are increased. The material gains a fine-grained structure, which improves the performance and properties of the manufactured products. Stamping aluminum with subsequent deformation almost completely eliminates the formation of shrinkage cavities and the appearance of gas holes.
However, this technology requires strict adherence to production processes, as well as the use of special molds for pouring and pressing the metal.
Liquid metal stamping is considered the optimal casting technique. With it, the manufacturer is not forced to process the material. This reduces the process time, especially when it comes to producing a large number of parts. In fact, liquid stamping combines the advantages of metal injection molding and hot molding to create high-density castings with properties that cannot be achieved by other casting methods. The result is products with high strength, tightness, correct geometric contour and minimal surface roughness.
Stamping of aluminum in this way is carried out according to the following scheme. Molten aluminum is poured into a mold and pre-compacted with its own mass. The pressure of the punch then ensures the formation of the desired contour. Keeping the material under pressure is done until the metal is completely hardened. The workpiece is then removed from the punch and subjected to the next stages of mechanical or thermal processing. This technology is characterized by the following advantages:
- Product quality. The resulting workpieces are characterized by increased density.
- Elimination of errors.
- Lower cost of raw materials
- Simplicity. No need to create measured blanks
The technology is suitable for creating flanges, blocks, rollers, wheels, any parts.
