Project leader: Christina
Project status: New project
GLASS BY MEANS OF WATER CUTTING TECHNOLOGY – CROSS-DICIPLINARY
COLLABORATION FOR SUSTAINABLE DEVELOPMENT
The aims are:
- to develop an environmentally friendly polishing technique that produces
the same finish as an acid-polished finish; for flat surfaces, cut edges
and holes both in float glass and in crystal glass
- to create a network within this field
- to appoint a person in the area of water cutting
- to produce a prototype glass polishing installation
Glass is increasingly being used as a building material and also for
decorative purposes. Where glass is used in structures, a commonly-employed
technique is to use holes that accommodate bolts. These holes can be
made stronger by polishing the edges. As yet there is no rational technique
for polishing small holes or recesses with sharp corners.
Within the art
glass manufacturing industry the only sufficiently effective method
available for polishing more complicated shapes such as holes and cut
edges is acid polishing. However, acid polishing is an expensive process
that involves some risk, and the industry is very keen to develop techniques
that can replace it.
shown that water jet technology can be used to polish glass to the same
level as can be achieved by acid polishing. However the technique has
not been used on art glass or developed for the industrial processing
of float glass. Water jet technology could be developed and adapted
to become an environmentally friendly alternative to acid polishing.
The first part of the project involves developing a polishing technique
that employs a water jet. Water cutting involves the use of high pressure
and sand. If this technique is used for polishing, it will probably
be necessary to substantially reduce the pressure of the jet. Sand cannot
be used to produce a surface of the same quality as is produced by acid
polishing, and so some other polishing medium must be used. The polishing
technique will then be applied to holes and cut edges.
It is not as yet
clear which analytical method is best for analysing and evaluating the
polished results. A suitable technique must be identified and used to
assess the quality of the result.
For holes, the
mechanical properties must also be evaluated and the effect of polishing
the holes will be determined.
We will have to
conduct a strategic sustainability analysis in order to investigate
the long-term potential of the various polishing methods. This is to
make sure that we develop an alternative polishing method that will
be commercialisable for the industry.
is run by:
Glafo in close cooperation with the Swedish Waterjet Laboratory.
Development Fund, Glafo, Region Blekinge, Regionförbundet i Kalmar
län, Swedish Waterjet Laboratory, Lunds universitet and Orrefors
Kosta Boda, Glasteknik i Emmaboda, Water Jet Sweden, KMT, Swede Matic