A process of electrically embedding carbon onto a steel surface in order to increase its roughness. Sometimes used on the cavities of clamp dies and clamp inserts to improve their grip on the tube without leaving the marks serrations or knurling do. The drawback is that this surface treatment degrades faster than serrations and is expensive to apply. “Surfalloy” and “Rocklinizing” are trade names for this process.
FREE Tube-Bending Guide Download:
A complete guide to the principles of the 4-Step set-up for tube-bending tools
This is a printable handbook showing how to implement in four standardized steps the “forward mandrel” set-up for rotary-draw tube-bending machines and establish process control over the so-called black art. The procedure is based upon the guiding principle that the tools make the bend and takes advantage of the inserted design of modern mandrel tooling.