The Struers MD-CHEM 200 mm Magnetic Fixation Disc is the mounting base for the Struers MD-System, enabling rapid attachment and removal of grinding discs and polishing cloths. A permanent magnet embedded in an aluminum body with tinned steel foil provides secure holding during material preparation. The disc maintains flatness throughout its service life while supporting efficient metallography and materialography workflows with consistent, repeatable results.
Technical Specifications
• Disc Diameter: 200 mm (8 inches)
• System: Struers MD-System
• Mounting Method: Magnetic fixation
• Disc Body: Aluminum with permanent magnet and tinned steel foil
• Compatible Preparation Surfaces: MD-grinding discs and polishing cloths
The MD-CHEM polishing cloth—the primary preparation surface for this disc—features porous neoprene foam with open-cell construction. This medium-hard, spongy structure resists chemical attack from aggressive polishing media, including alkaline colloidal silica and acidic alumina suspensions. Open cells function as fluid reservoirs, creating a pumping action that ensures high contact between polishing fluid and specimen during final polishing of all materials.
– Key Features
• Magnetic attachment eliminates resilience loss common to non-magnetic methods
• Faster changeover of preparation surfaces versus mechanical fixation
• Flat disc geometry maintained over extended service life
• Compatible with segmented grinding disc designs that minimize buildup of abraded material and sustain high removal rates and optimal planeness
– Typical Applications
Final polishing in oxide polishing workflows with chemically active suspensions. Suited for oxide polishing protocols employing alkaline colloidal silica or acidic alumina media where chemical compatibility is critical.
– Compatibility & Integration
Works across the complete MD-System range: MD-Pan (fine grinding of soft metals, pre-polishing of hard/brittle materials), MD-Piano (plane and fine grinding >150 HV), MD-Primo (plane and fine grinding HV 40–250), MD-Molto (plane grinding aluminum alloys), and MD-Mezzo (plane grinding titanium alloys).
