About Edge Breaking (Welded Sheet Metal parts)

Edge Breaking Standards

Model Examples	Feature Example	Standard Values
Model Examples	Feature Example	Light Edge Breaking	Heavy Edge Breaking
	①External Corner	None	External Corners chamfered C1mm. Corners less than 30° or greater than 170° are excluded. External Corner Chamfering
	②Sheet surface Edges	Remove burrs and flash and break edges to approx. R0.1	Remove burrs and flash and break edges to R0.2 or larger (approx. R0.3)
	③Narrow Slit Area	No burrs or flash of 0.1mm or larger	Finish burrs and flash and Break Edges to approx. R0.1
	④Narrow cutouts and small holes	No burrs or flash of 0.1mm or larger	Finish burrs and flash and Break Edges to approx. R0.1

There is a possibility of minor scratches on appearance surfaces from the double-sided deburring machine used to eliminate burrs.
The contact areas between plates that are not welded tend to be slightly more noticeable compared to parts without edge breaking (see photo on the left below).
In addition, areas without weld beads between fillet weld sections may have poor surface treatment adhesion (see photo on the right below).

Sheet surface edges are broken to R0.2 or larger using a double-sided deburring machine, and external corners are chamfered to C1 by laser cutting.
Fine scratches may occur on sheet surfaces when Edge Breaking sheet surface edges.