The core approach is “tool isolation + standardized operation + surface protection,” considering the susceptibility of the passive film:
1. Tool selection and modification
Use blunted or coated tools, e.g., rubber-handled wrenches, plastic-coated pliers, copper or nylon hammers instead of carbon steel sharp tools.
Wrap sharp tools in tape, rubber sleeves, or plastic caps if contact with plates is necessary.
Avoid steel brushes or sandpaper; use soft cloth or sponge for cleaning.

2. Surface pre-protection
Cover areas likely to contact tools with PE film, kraft paper, or protective film; add rubber corner guards.
Use anti-slip mats, wood, or fabric on the work platform to avoid direct contact with metal surfaces.
When stacking plates, place moisture-proof anti-slip pads between layers.

3. Operation norms
Wear clean cotton or rubber gloves to avoid scratches from fingernails or rings.
Handle plates gently; move them by sliding rather than dragging.
When tightening bolts or tapping, place thin rubber or wood pads between tool and plate.

4. Site control
Remove metal debris or sharp objects from the work area.
Organize tools; keep sharp tools separate in toolboxes.
Do not place tools or components directly on plate surfaces; if necessary, use soft padding.