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Objective classification of metal surfaces – METALsurf

Large costs and lead-time losses are created by returned aluminium products – to a great extent unnecessarily. Much of the metal product complaints are due to visual surface defects. The aim of the project is to develop knowledge and methods that can be used, wholly or partly, for the development of objective classification of visual requirements on product surfaces from profile to processed- and surface finished product.

Large costs and lead-time losses are created by returned aluminium products – to a great extent unnecessarily. Much of the metal product complaints are due to visual surface defects. Today, there are a number of industry and company classification systems that usually differ between different suppliers and customers, and between different industries. For example, different systems are used depending on whether the surface is to be exposed outdoors or not, what aesthetic requirements characterize the industry, what requirements the end customer is expected to have and so on.

The project intends, with the support of objective and ISO-based 3D surface measurement technology, and studies of users and customers' perceived quality to prepare general guidelines for a measurable and tolerance-based classification of visual objective as well as subjective requirements for extruded and press-moulded aluminium and rolled steel surfaces.

The aim of the project is to develop knowledge and methods that can be used, wholly or partly, for the development of objective classification of visual requirements on product surfaces from profile to processed and surface finished product. The project is expected to create the conditions for common national and, by extension, international standards for the classification of metal surfaces.

About the project

Project period

2019-11-01 till 2023-04-30

Financiers

The Strategic Innovation Programme Metallic Materials, a joint venture of Vinnova, the Swedish Governmental Agency for Innovation Systems, Formas and The Swedish Energy Agency

Project manager

Bengt-Göran Rosén, Professor, Halmstad University

Other participating researchers

Collaboration partners

  • Hydro Extrusion Sweden
  • Svenskt Aluminium
  • Ahlins i Habo
  • A-lackering
  • Profilgruppen
  • Klarvik
  • IKEA of Sweden
  • Hydal
  • Bodycote
  • Alutrade
  • Thule
  • Holsby Metall

More information

Vinnovas project page (in Swedish) External link, opens in new window.

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