What is Sheet To Sheet NO.4 Finished Grinding Line

A Sheet-to-Sheet No.4 Finished Grinding Line is a surface finishing production line used to process individual metal sheets, especially stainless steel sheets, one by one. It uses abrasive belt grinding and brushing technology to create a uniform No.4 satin brushed finish on the sheet surface.

Unlike a coil-to-coil line, this machine is designed for cut sheets, not continuous coils. The sheet is fed into the line, ground and brushed by abrasive belts, then cleaned, dried and optionally covered with protective film.

Product Overview

The LEBON Sheet-to-Sheet No.4 Finished Grinding Line is designed for automatic grinding, brushing and finishing of individual stainless steel sheets. It uses abrasive belt grinding technology to produce a fine, uniform and decorative No.4 satin brushed surface, widely used in elevator panels, kitchen equipment, home appliance panels, architectural decoration and stainless steel decorative sheets.

This production line is suitable for cut sheet processing and can be configured with feeding, grinding, brushing, cleaning, drying and protective film laminating systems. Compared with manual brushing, the line provides more stable surface texture, straight grain direction, higher production efficiency and consistent finished sheet quality.

With adjustable grinding pressure, variable feeding speed, stable sheet conveying and flexible abrasive belt selection, the machine can meet different material thicknesses, working widths and surface finish requirements. It is an ideal solution for stainless steel service centers, decorative sheet manufacturers and metal processing factories that require reliable No.4 sheet finishing production.

Production process

1. Sheet Feeding

Individual stainless steel sheets are placed on the feeding table and automatically conveyed into the grinding line. Stable feeding helps ensure smooth processing and straight grain direction.

2. Surface Grinding

The sheet surface is processed by high-speed abrasive belts to remove minor scratches, oxide marks and surface defects. This step prepares the surface for a uniform No.4 finish.

3. No.4 Brushing

The abrasive belt creates a fine and consistent No.4 satin brushed texture on the stainless steel surface. Grinding pressure, belt grit and feeding speed can be adjusted according to the required finish.

4. Cleaning

After grinding and brushing, the sheet surface is cleaned to remove grinding dust, oil, abrasive residue and metal particles.

5. Drying

The cleaned sheet passes through the drying section to remove moisture and prevent water marks on the finished surface.

6. Film Laminating

If required, a protective film is applied to the finished No.4 surface to prevent scratches during handling, cutting, transportation and further processing.

7. Sheet Output

The finished stainless steel sheet is discharged from the line with a uniform No.4 satin brushed surface, ready for inspection, packaging or further production.

Simple flow:
Sheet Feeding → Surface Grinding → No.4 Brushing → Cleaning → Drying → Film Laminating → Finished Sheet Output

Key features

• Produces uniform No.4 satin brushed finish on individual stainless steel sheets

• Designed for sheet-to-sheet processing, suitable for cut sheets rather than coils

• High-speed abrasive belt grinding system for efficient surface finishing

• Stable sheet feeding and conveying system for straight grain direction

• Adjustable grinding pressure for different sheet thicknesses and surface requirements

• Variable feeding speed for flexible production control

• Multiple abrasive belt grit options for No.3 coarse grinding and No.4 fine brushing

• Wet grinding system available to reduce heat, dust and surface burning marks

• Grinding liquid filtration and recycling system for cleaner and more economical operation

• Cleaning and drying section to remove oil, dust, residue and water marks

• Optional protective film laminating system after grinding

• PLC and inverter control system for easy operation and stable speed adjustment

• Heavy-duty machine frame for stable long-term production

• Easy abrasive belt replacement and convenient maintenance design

• Customizable working width, thickness range, grinding heads and line layout

• Suitable for decorative stainless steel sheets, elevator panels, kitchen equipment, home appliance panels and architectural metal products

Surface Quality 

• Produces a fine and uniform No.4 satin brushed surface with straight, continuous and directional grain texture

• Typical abrasive belt for No.4 finish: G180 or above, depending on customer surface requirements

• No.3 coarse grinding can use abrasive grit around G60–G150, while No.4 fine brushing usually uses finer abrasive belts

• Typical No.4 surface roughness reference: around Ra 0.4–0.8 μm, depending on material condition, belt grit, grinding pressure and line speed

• Common processing thickness range: 0.5–3 mm, customizable according to customer requirements

• Common working width options: 1250 mm / 1550 mm, wider models can be customized

• Common feeding speed range: 5–15 m/min, adjustable according to required finish and material condition

• Surface texture can be controlled by abrasive belt grit, grinding pressure, belt speed, conveyor speed and wet/dry processing method

• Stable sheet feeding helps maintain straight grain direction across the full sheet length

• Accurate belt tracking helps prevent belt deviation marks, diagonal brushing lines and uneven surface patterns

• Uniform grinding pressure helps reduce deep belt marks, edge difference and inconsistent surface texture

• Wet grinding configuration helps reduce heat, dust and surface burning marks, improving surface smoothness and finish stability

• Cleaning and drying sections help remove grinding residue, oil, dust and water marks from the finished sheet

• The finished sheet should be free from visible deep scratches, vibration marks, patchy areas, burning marks, roller marks, oil stains and water stains

• Full-width surface consistency should be checked from the center area to both sheet edges

• Optional protective film laminating helps prevent secondary scratches during handling, cutting, transportation and storage

• Final surface quality can be inspected by visual checking, roughness testing, grain direction checking and comparison with the customer’s approved sample

Application

• Decorative stainless steel sheets

• Elevator panels and cabin interiors

• Kitchen equipment panels

• Home appliance panels

• Architectural wall panels

• Ceiling panels and interior decoration

• Stainless steel doors and frames

• Cabinets, worktops and countertops

• Restaurant and hotel equipment

• Escalator side panels

• Metal furniture and display fixtures

• Appliance shell panels

• Building decoration materials

• Stainless steel service center processing

• Pre-treatment before coating, laminating or further fabrication

Short description