Cover iron plate technical requirements

1.Flat end difference: (0.56 or 0.9)±0.03mm;
2. Cover iron plate flatness≤0.05mm;
3. Warp≤0.02mm;

Preparation work

1.Clean cover iron plate back, flat end and etc;
2.Check and record flatness of iron strip;
3.Flat-clothing should be placed in dry place to avoid rust and moisture after being opened;
4. Flat-clothing should be scrapped by scraper blade;