ELORA TOOL CATALOGUE

info@elora.de    www.elora.de 02 1. Blanking The starting material is high-grade ELORA chrome vanadium 31 CrV3/1.2208. The cropped blank for the spanner is cut from the rough blank. The characteristic shape is recognisable even at this early stage. 2. Hot forging & flash removal a. The cropped blank is heated in a furnace to the correct forging temperature and then drop forged in this hot state using high press forces. b. Following this, the flash is then removed using flash-removal presses. 3. Hole punching In the next step, the hole at the ring-end of the spanner is punched. 4. Grinding & vibro-deburring The subsequent grinding process ensures the tool has a smooth outside surface. Any sharp edges and flash still remaining are then removed by vibro-deburring. 5. Ring and jaw broaching The purpose of the broaching operation is to ensure the ring and jaw ends have exactly the right dimensions. 6. Profile punching The individual marking that identifies our spanners around the world is added during the profile punching operation. 7. Hardening and tempering This special heat treatment ensures our spanners enjoy the longest possible service lifetimes. The tool’s tensile strength is provided by precise hardening and the high level of ductility by the tempering process. 8. Sand blasting & head polishing To make sure the spanner has a matt, non-slip surface, we sand-blast it. The jaw end is then also polished to give it a smooth finish. 9. Chrome-plating Finally, the spanner is nickel-plated and chrome-plated in an electroplating process. The final product now boasts effective surface protection and a specially high-grade appearance. Typically ELORA. 79 7. 9. 8.