As versatile a material as the copper-zinc alloy brass can be processed in just as diverse ways. Of course, it depends on the form in which it is present as a basic material and what should arise from it.
The processing of precision brass services
Among other things, the brass processing is possible in the following way:
Due to the material properties of brass, it is generally ideal for machining .
Precision brass services materials
1. Milling brass
Nowadays, brass milling often involves the use of a CNC milling machine , which offers very high flexibility and manufacturing precision in the production of milled parts made from this copper alloy. This is not least due to the coordinate-based computer control.
With multi-axis CNC milling, significantly more complex parts can be produced with almost all workpiece geometries than would ever be possible with conventional milling. From the machining of rotationally symmetric or parallelepiped workpieces over 3D free-form surfaces to the smallest components such as gears, almost every part of this type of brass machining can be realized.
2. Turn brass
Even when turning, ie the rotationally symmetrical machining of brass, CNC technology is often in demand. In contrast to milling, however, this moves the workpiece - it rotates longitudinally in the CNC lathe about an axis and thus performs the main cutting motion. By the feed movement of the tool slide firmly clamped turning tool along the workpiece, finally, the desired shape of the brass rotating part is formed. All movements in the lathe also run completely after programming. There are also different classifications within the turning process, whereby the most important according to DIN 8589 . These are the procedures:
In addition to CNC lathes, universal lathes are also used, especially for low quantities , small batches or individual parts. In so-called machining centers, both milling and turning brass are possible.
3. Turn brass
The bending behavior of brass depends essentially on the alloy composition and varies from brass to brass. Basically, the metal consists of copper and zinc and may contain other alloying additives such as lead or aluminum. With decreasing copper content, however, the brittleness of the material increases. So while one type of brass can reach a certain bending angle, another material will break or break at the same angle.
For brass pipes with small wall thicknesses and diameters, not too much force is required for bending. However, it is recommended to heat the brass beforehand . If you want to bend very tight radii, the brass should be annealed in a temperature range of about 450 ° C to about 600 ° C at the bending edge, about with a burner.
This annealing prevents material from cracking, but the workpiece remains relatively soft at the annealed location. This can be a disadvantage especially if the processed semi-finished product - such as a brass profile or a brass rod - should withstand loads. For brass pipes , this is usually not required.
4. Cut brass
Depending on the requirements for the final result, suitable methods for cutting brass have been laser cutting, water jet cutting or circular sawing or with a shearing device. With the latter, thin brass sheetcan be excellently cut.
5. Drill brass
Brass is generally a metal that develops chips very quickly during machining. If you want to drill brass, the drill should have steep flutes and the speed should be higher. The short shavings spray heavily when drilling - therefore, the wearing of goggles is absolutely necessary.