A stainless steel sheet polishing machine finishes discrete panels one by one, bringing each to No.4, hairline or SB without edge marking. Unlike a coil line, it is built for mixed sizes and small batches — the configuration fabricators and architectural processors actually need.
How It Works
Panels are fed piece by piece on a rigid bed. Grinding or polishing heads are staggered across the width so the cut is spread and the finish stays even out to the edges. The sequence runs coarse to fine, then to buffing where a reflective finish is specified.
- Loading and alignment — panel positioned with edge protection so the corners are not marked.
- Grinding — coarse belt removes scale and roll marks.
- Refinement — finer belts even the grain.
- Buffing — compound wheels produce hairline or SB appearance.
- Cleaning, drying and inspection — surface prepared for film lamination or packing.
Key Features
- Panel-by-panel flexibility — small batches and mixed sizes run as easily as long production runs.
- Staggered head layout — cutting distributed across the width keeps the finish even to the edges.
- PLC control with recipe storage — parameters recalled per grade and finish.
- Wet grinding option — heat control for thin sheet and high-volume work.
- Automatic feeding and unloading — reduces handling and therefore handling marks.
- Adjustable brush pressure and conveyor speed — different finishes from the same machine.
Selecting the Finish and Abrasives
For No.4, an abrasive belt around 120–180 grit establishes the directional grain, refined at 240–320 grit. For hairline, finer belts plus a compound-loaded brush. For SB, rotating disc brushes with soft pads give the non-directional matte surface. Belt grain must run strictly parallel across every stage — crossing it destroys the pattern.
Typical Operating Conditions
- Grades — 200 / 300 / 400 series; 201, 304, 316, 430
- Thickness — 0.3–3.0 mm standard; up to 4.0 mm customised
- Width — 600–1550 mm
- Panel size — 1250×2500 mm and 1550×3000 mm typical
- Production speed — 0–30 m/min
- Automation — fully automatic
Common Defects and How to Prevent Them
- Edge marking — panels not correctly seated, or edge protection worn. Check location pins and pad condition.
- Uneven finish across the panel width — head coverage insufficient for the working width; add heads.
- Wavy stripes — belt oscillation out of adjustment: 15–20 mm sweep at 15–25 cycles per minute.
- Heat marks on thin panel — enable wet grinding and reduce pressure below 0.5 mm.
Typical Applications
Elevator panels, architectural cladding, kitchen sinks and worktops, commercial food equipment, home appliances, and precision fabricated components where appearance is the deciding factor.
Packing & Delivery
Foam edge protection, transparent film wrapping, iron rope securing in container. Each section tested before shipment, with engineers responsible for their section through to dispatch.
FAQ
Sheet-to-sheet or coil-to-coil?
Sheet-to-sheet for discrete panels, mixed sizes and made-to-order work. Coil-to-coil if material arrives and leaves as coil at high tonnage. Running coil through a sheet line loses most of the throughput advantage.
Can this machine produce 8K mirror?
With a grinding stage ahead of the buffing stage and enough heads, yes. 8K needs staged grit progression plus wet grinding before any reflective buffing — it is not achievable on a buffing-only machine.
What edge finish quality can I expect?
Edge marking usually comes from loading rather than from the machine. With correct seating and maintained edge protection, panels come out visually consistent across the full batch.
