03/09/2026
Inline memory wire finishing without acid baths or offline bottlenecks.
A Nitinol stent navigates coronary arteries. A guidewire carries a hydrophilic coating that has to bond first time. Both depend on the surface condition of the wire long before it becomes a device.
Heat treatment scale and oxide contamination do more than affect appearance. They shorten fatigue life, reduce corrosion resistance and raise nickel ion release at the surface, which is the defining biocompatibility risk in any implantable memory wire component.
The established finishing routes each carry a limitation that process optimisation alone cannot solve:
- Chemical pickling removes oxide, but the hydrofluoric and nitric acid mixtures required for shape memory alloys alter surface topography and create fatigue crack nucleation sites. It runs offline, in acid baths, with its own waste treatment and compliance burden.
- Electropolishing produces a bright surface but retains the inclusions where corrosion initiates in service. It remains a batch process.
- Dry blasting does not achieve complete oxide removal from shape-set wire, as SEM analysis confirms.
The Vapormatt Profelis solves the problem inline. It wet blasts, rinses and blows off continuous wire at line speed, from 1mm up to 54mm diameter, using water-cushioned abrasive that removes scale and residue without introducing the surface stress of dry blasting and without altering wire dimensions or transformation behaviour. Every parameter is set at qualification, stored as a named recipe on the HMI and recalled at the touch of a button, so batch one matches batch one thousand.
No acid baths. No airborne particulate. No offline bottleneck.
We brought wet blasting to the world, and we remain the only wet blasting company to have engineered a dedicated machine for continuous wire and cable. For manufacturers supplying to ASTM F2063 within ISO 13485 frameworks, that level of repeatability is a compliance requirement rather than a commercial advantage.
Learn more: https://eu1.hubs.ly/H0y1m-50