High-strength prestressing tool made by stripwinding. The inner core of the container is of hardened tool steel or tungsten carbide, and the steel strip material can withstand up to 200° C or 400° C depending on the choice of strip material. The outer steel ring is assembled to the stripwound section by heat shrinkage. The pressure pad and bottom ring screw for axial prestressing forging are both made of hardened tool steel.
The SC AXI-FIT container has about double the strength compared to a standard compression ring and offers a unique capability to optimize both the radial and axial prestressing of the forming die while remaining in a fully elastic state. Axial prestressing is applied by tightening the bottom ring screw while having the forming die under static pressure. This unique product feature offers three important merits: Higher service life of the forming die, preventing horizontal cracking or die split by axial prestressing, and a prestressing tool that can be reused numerous times at full capacity. Improved part tolerance can also be achieved if the inner core of the SC AXI-FIT container is made of tungsten carbide/i.e. E+ type. Specific calculations are required in each case.
The SC AXI-FIT container is mostly applied for cold and warm forming applications involving high or even extreme tool loads. The axial prestressing forging tools can be used on all types of press machines. Minimum diameter of the SC AXI-FIT container can be approx. ø50 mm.