Page 71 - ELORA-Tool_Catalogue_E95

1. Blanking
The starting material is high-grade ELORA chrome vanadium
31 CrV3/1.2208. The cropped blank for the spanner is cut from 02 02
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.
6.
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.
7.

8.

9.

info@elora.de www.elora.de 71