Oil-wet coil-to-coil polishing and grinding line with eight No.4 polishing units and a four-head hairline machine, processing steel coil 0.3–3.0 mm thick at up to 60 m/min.
Need other widths, thicknesses or finishes? Tell us about your project and we will propose the right configuration.
The MJD1600 is an oil-wet coil-to-coil polishing and grinding line for continuous steel-coil surface processing. The documented process integrates coil loading, powered decoiling, strip feeding and leveling, crop shearing, No.4 abrasive-belt polishing, four-head hairline finishing, cleaning and drying, protective-film application, post-tensioning, EPC-guided recoiling and auxiliary coil handling in one production sequence.
The No.4 section uses a dual-side configuration of eight polishing units — three for the back side and five for the top side — producing a uniform short-grain directional pattern. Downstream, a dedicated four-head hairline machine creates the continuous long linear grain of a hairline finish. The process sequence (No.4 only, hairline only, or No.4 + hairline) is selected per order.
Coil handling is fully powered: hydraulic loading and unloading trolleys, support arms, powered mandrels and pinch rolls move coils of up to 25 MT through the line. The recoiler uses an EPC system — detection lens, light source, control module, servo valve and feedback sensor — to correct winding position, and the finished strip is protected by brush cleaning, high-pressure air drying and double-sided protective-film application.
Documented parameters include a coil thickness range of 0.3–3.0 mm, a maximum line speed of 60 m/min, an approximate total installed capacity of 800 kW and a line footprint of about 37,000 × 8,000 mm. The source document contains different width limits for the complete line and individual machines, so the approved working width is confirmed for each project.
Marked parameters are to be confirmed against the technical agreement of each project.
| Parameter | Value |
|---|---|
| Material | Steel coil |
| Coil thickness | 0.3–3.0 mm |
| Working width | 650–1,550 mm (line overview; decoiler and entry equipment up to 1,600 mm) |
| Maximum coil OD | 1,800 mm |
| Maximum coil weight | 25 MT (entry and exit) |
| Maximum line speed | 60 m/min |
| No.4 polishing units | 8 units (3 back-side + 5 top-side) |
| Hairline machine | 4 grinding heads |
| Total installed power | Approx. 800 kW |
| Line footprint | Approx. 37,000 × 8,000 mm |
| Control system | PLC with industrial touchscreen |
| Recoiling alignment | EPC correction system |
Coil loading, decoiling, strip preparation, polishing, hairline finishing, cleaning, film application and recoiling run in one production sequence, reducing intermediate coil transfers.
Three back-side and five top-side No.4 polishing units process both faces of the strip in a single pass.
A separate four-head hairline machine adds continuous long-grain hairline finishing after the No.4 stages.
Optical detection, servo-valve actuation and position feedback keep winding alignment under control for finished coils up to 25 MT.
Brush cleaning, air drying and double-sided film application protect the finished surface before recoiling.
Stainless Steel Coil Polishing LinesContinuous 1600mm coil-to-coil polishing line producing No.4, Scotch-Brite and hairline finishes on stainless steel coil, with a uniform surface across the full coil width.
Stainless Steel Coil Polishing Lines1300mm coil-to-coil polishing line running at up to 60 m/min, delivering No.4, Scotch-Brite and hairline finishes on stainless steel coil in a single pass.
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Send us your material, width, thickness and desired finish. We will reply with a technical proposal.