The Distance Scale is placed next to the profile.
The viewing distance is determined by the table “Evaluation of error type”. For example, if you have a rub mark on a surface marked as surface 3, you reverse until you cannot read the top line but can still read the bottom line at B3 on the Distance scale. The profile surface is then viewed for 5 seconds. If you cannot detect the deviation, the surface is approved.
OTHER
If there are other, customer-specific requirements for the appearance of the surface, this must be controlled via equals or equivalent. This may, for example, apply to brushed surfaces.
| Class | Definition of | Production of | Useful alloys | Viewing distance and time |
|---|---|---|---|---|
| 1 | Scratches, rub marks or other physical damage must not be visible during inspection according to B1 – 5 sec. | Individual handling at all stages. Only small part of profile may be classified as surface 1. Exit surface must have lower surface requirements. Visible surfaces are protected during packing. Dielines are not accepted. | AND AW-6060 AND AW-6063 AND AW-6101 | B1 – 5 sec. |
| Weld zones and heat zones for anodized profiles. | Individual handling at all stages. Only small part of profile may be classified as surface 1. Exit surface must have lower surface requirements. Visible surfaces are protected during packing. Dielines are not accepted. | AND AW-6060 AND AW-6063 AND AW-6101 | B2 – 5 sec. | |
| 2 | Scratches, rub marks or other physical damage must not be visible during inspection according to B2 – 5 sec. | Individual handling at all stages. Delivery area must have lower surface requirements. Visible surfaces are protected during packing. Dielines are not accepted. | AND AW-6060 AND AW-6063 AND AW-6101 | B2 – 5 sec. |
| 3 | Scratches, rub marks or other physical damage shall not be visible during inspection according to B3 – 5 sec. | If production so requires, visible surfaces can be added together. Visible surfaces are protected during packing. Dielines are generally not accepted, evaluated on a case by case basis. | EN AW-6060 EN AW-6063 EN AW-6101 (EN AW-6005) | B3 – 5 sec. |
| Weld zones and heat zones for anodized profiles. | Visible surfaces can be added together when packing if they are anodized. Dielines are generally not accepted, evaluated on a case by case basis. | EN AW-6060 EN AW-6063 EN AW-6101 (EN AW-6005) | B4 – 5 sec. | |
| 4 | Scratches, dielines, rub marks or other physical damage must not be visible during inspection according to B4 – 5 sec. | Profiles can be added together at all stages. Dielines may occur. | Profiles can be added together at all stages. Dielines may occur. | B4 – 5 sec. |
| Weld zones and heat zones for anodized profiles. | Profiles can be added together at all stages. Dielines may occur. | AND AW-6060 AND AW-6063 AND AW-6101 AND AW-6005 AND AW-6351 AND AW-6082 | B5 – 5 sec. | |
| 5 | Dimensional and strength requirements only. | There are no requirements on the appearance of the surface. However, any defects must not be of such a nature that personal injury may occur. | AND AW-6060 AND AW-6063 AND AW-6101 AND AW-6005 AND AW-6351 AND AW-6082 |
