20th International Forgemasters Meeting - IFM 2017

Continuous development in materials, processing and joining technology opens up new possibilities for the application and optimization of forged parts with more complex structures. In particular, extrusion processes and the use of higher-alloyed, or micro-alloyed steels, which are becoming increasingly important in the production of high-quality forgings, present challenges for the established descaling processes. Even high forming rates and the close to finish shaping requires a clean surface of the forging before the first upsetting. Therefore, the number of installed high-end descaling systems in forging is steadily increasing - even in applications for which hydraulic descaling has not yet been established, for example for the descaling of small forging in the automotive industry with extremely short cycle times. These systems not only achieve clean part surfaces, moreover they offer new possibilities for the efficient production of high-quality forgings with low water requirements, minimum temperature drops and low energy requirements. Modern high-end descaling systems make it possible to keep the temperature control constant within narrow limits during the process and achieve a temperature drop of only 5 to 10 ° C during descaling - an effect which is of decisive importance for the production of high-quality forging products. The increased adhesion of the scale of modern alloys also places high demands on descaling systems. Hydraulic high-end systems meet them with the precise control of the individual process parameters when applying the force of the water. Apart from the actual descaling process, also the individual parts and process handlings are often the focus. The Presentation " High end descaling in forging "provides an insight into the process of hydraulic descaling, and represents the state of the art. In addition to current methods for the high-end descaling of medium heavy and heavy forging blocks, the newly developed MicrolineDescaling System is used for lighter automotive applications. . It significantly reduces the time for descaling and is also used in processes where hydraulic descaling had not been established.