During hot rolling, hardening, tempering, and subsequent strip-processing operations, defects such as oxide scale, roll marks, scratches, and surface irregularities may develop. These defects can transfer to processing rolls and repeatedly damage the strip surface, resulting in quality rejection and higher finishing costs.
VALGRO’s dry strip grinding system removes the affected surface layer using controlled abrasive grinding. It helps produce a consistent surface texture, improves strip appearance, and prepares the material for the next stage of manufacturing.
The machine can be configured with multiple grinding heads, strip-guiding arrangements, dust-extraction equipment, and process automation, depending on the strip material, width, thickness, line speed, and required finish.
For cladding applications, the grinding process can also roughen and mechanically activate the surfaces of steel or aluminum strip before roll bonding. The system is designed for stable operation without coolant or process water. This positioning aligns with the existing product-page description while presenting the application more clearly
- Continuous dry grinding of coil and strip material
- Removes oxide scale, scratches, roll marks and surface defects
- Produces a uniform and reproducible grinding pattern
- Controlled surface roughening for coating and cladding preparation
- Suitable for hardened and tempered steel strips
- Customisable single-head or multiple-head configuration
- Precise grinding-pressure and material-removal control
- Stable strip guiding for consistent processing
- Helps prevent strip deformation and camber
- Vibration-controlled construction for uniform finishing
- Consistent results from the beginning to the end of the coil
- Integrated dust extraction and filtration
- No grinding coolant or wastewater treatment required
- Reduced dependence on manual polishing
- Lower rework, rejection and finishing costs
- Compatible with automated coil-to-coil production lines
- Dry abrasive-belt grinding technology
- Heavy-duty fabricated machine structure
- Single-side or both-side grinding configuration
- Single-head or multiple-head arrangement
- Adjustable grinding-head pressure
- Variable strip-feed speed
- Automatic abrasive-belt tracking
- Pneumatic abrasive-belt tensioning
- Strip support and guiding system
- Thickness-adjustment mechanism
- Digital operating controls
- PLC and HMI-based automation option
- Motor-load monitoring option
- Centralised dust-extraction connection
- Spark and dust-management provisions
- Safety enclosure with access interlocks
- Emergency-stop system
- Coil-to-coil line integration capability
- Custom working width and processing capacity
- Abrasive selection based on material and required finish
Important: Exact strip width, thickness range, line speed, motor power, abrasive-belt size and number of grinding heads should be stated only after confirming the final machine configuration.
- Hardened and tempered steel strips
- High-carbon steel strips
- Spring-steel strips
- Tool-steel strips
- Stainless-steel strips
- Cold-rolled steel strips
- Aluminium strips
- Copper and non-ferrous strips
- Saw-blade strip preparation
- Doctor blades and industrial blades
- Measuring-tape strips
- Automotive component strips
- Electrical and electronic component strips
- Bearing and bimetal cladding preparation
- Roll-bonding surface activation
- Coating and lamination preparation
- Removal of rolling and heat-treatment defects
