Rotary disc type 8K mirror polishing machine for stainless steel sheet and coil: multiple rotating disc heads produce a non-directional No.8/8K mirror finish without visible grain.
Need other widths, thicknesses or finishes? Tell us about your project and we will propose the right configuration.
8K mirror finish, also known as No.8 finish, is the highest grade of mechanical polish applied to stainless steel. It produces a highly reflective, mirror-like surface with no visible grain direction — specified wherever a true mirror appearance is required, from elevator cabins to architectural feature panels.
Conventional wide-belt polishing lines create directional grain because the abrasive belt moves in a single linear direction. The rotary disc system developed by GLORY MACHINERY takes a different approach: multiple rotating disc heads fitted with abrasive media spin while traversing across the surface, producing overlapping polishing paths that eliminate directional grain and build a uniform mirror finish.
Compared with oscillating 8K systems — which move abrasive heads in a reciprocating linear motion — the rotary approach produces a non-directional mirror with fewer visible start-stop marks and more stable pressure control across the full width. Controlled disc pressure and rotation also improve process stability and reduce abrasive consumable cost compared with conventional mirror polishing methods.
A representative configuration is the 1300 type automatic sheet-to-sheet 8K mirror polishing line, designed for discrete-sheet production. GLORY MACHINERY also supplies coil-to-coil 8K mirror polishing lines for continuous processing of stainless steel coil. Final machine configuration, process capability and performance targets are project-specific.
Marked parameters are to be confirmed against the technical agreement of each project.
| Parameter | Value |
|---|---|
| Polishing action | Non-directional, multiple rotating disc heads |
| Final surface | No.8 / 8K mirror finish |
| Typical configuration | 1300 type automatic sheet-to-sheet 8K mirror polishing line |
| Also available as | Coil-to-coil 8K mirror polishing line for continuous coil processing |
Overlapping rotary polishing paths eliminate directional grain, producing the fully reflective No.8/8K surface.
Controlled disc pressure and rotation keep polishing consistent across the full width, improving surface uniformity.
The rotary disc system reduces abrasive consumable cost compared with conventional mirror polishing methods.
8K Mirror Polishing MachinesAutomatic sheet-to-sheet 8K mirror polishing line combining oscillating polishing and a rotary disc 8K machine, for sheets up to 1250 × 4000 mm at 60–70 pcs/hour.
8K Mirror Polishing MachinesContinuous coil-to-coil 8K mirror polishing line with a 31-group rotary disc polishing section, producing No.8/8K mirror stainless steel coil 600–1,550 mm wide at 5–20 m/min.
8K Mirror Polishing MachinesHigh-speed coil-to-coil 8K mirror polishing line running at 9.5 m/min, proven in real production at the Hongwang Holding Group project.
Send us your material, width, thickness and desired finish. We will reply with a technical proposal.