Demonstrating a CNC Four-Roll Plate Rolling Machine with Your Own Steel
Buyers should require a demonstration on their own steel and workpiece geometry, then verify pre-bending and rolling results against the machine's rated values before acceptance.
Ask the supplier to demonstrate the CNC four-roll plate rolling machine on your own steel, not on a polished sample. A practical buyer decision is whether the demonstration workpiece should match your production part's thickness, width, and target curvature, so the trial shows how the machine handles your material rather than a favorable substitute.
Use the demonstration to compare the machine's rated values with your part. The catalog reference lists 8 mm rolling thickness and 6 mm pre-bending thickness at a 245 MPa yield limit, a 2,500 mm bending width, and 5 m/min roll speed. Confirm that your steel's yield limit and part width fall within these reference values, and ask how the four-roll sequence affects pre-bending and final curvature on your geometry.
In the request for quotation, specify the trial material grade, thickness, width, and required radius, and ask for the measured results. During acceptance, check the rolled profile and pre-bent edge against your drawing, and record the settings used.
Before requesting a quote, confirm with the supplier which material and workpiece they will use for the demonstration, how results will be measured, and whether the trial reflects your actual steel and part dimensions.