There are no translations available.

 

Miroiterie à vendre

Localisation : grande ville côte d'azur.

Miroiterie traditionnelle avec activité menuiserie Aluminium et PVC.

Miroiterie structurée bien connue et existant depuis plusieurs dizaines d'années

Parc machines important (rectiligne, table de coupe, perceuse, sableuse...)

Cause de la cession : départ en retraite du dirigeant.

Contacter info@comascotec.com

BAVELLONI SPA SIGNED AN AGREEMENT FOR THE ACQUISITION OF GLASTON MEXICO

On October 31, 2019 Bavelloni SpA finalized the acquisition of all (100%) of the shares of Glaston Mexico S.A. de C.V., a company of the Glaston Group.

 

Glaston Mexico, whose company name will become Bavelloni Mexico, is a business based in Guadalajara (Mexico) specializing in the sales and service of Bavelloni products and in the sales of Glaston HT machines.

The Company has been operating for more than 25 years, installing over 1000 machines in Mexico and other Central American countries.

 

 

 

The purchase of the Mexican subsidiary represents a milestone in Bavelloni's strategic plan, as it will allow the direct management of both commercial and after-sales activities in a very important area of the world.

Bavelloni Mexico will continue to be managed by Matteo Gherseni who successfully ran the subsidiary over the last ten years.

 

At the same time as the acquisition, an agency contract was also finalized enabling Bavelloni Mexico to continue promoting Glaston HT products in Mexico and Central America as the Official Agent for the Finnish brand.

 

The collaboration between Glaston and Bavelloni will continue unchanged also in Italy, where Bavelloni SpA is Glaston Official Agent, as well as in Brazil and Singapore, where Glaston operates as Bavelloni Official Distributor.

 

There are no translations available.

Nouveau four de trempe pour Emaver

Le miroitier de La Garde vient de recevoir son nouveau four de trempe Italien.

There are no translations available.

Activité miroiterie à racheter

Localisation : Bretagne, mais possibilité de déménager l'activité facilement dans une autre ville

Le dirigeant d'une entreprise spécialisée dans la commercialisation et l'installation de miroirs pour des activités sportives souhaite céder son entreprise.

Descriptif plus détaillé de l'entreprise

L'entreprise est rentable et assure un chantier d'installation par semaine (50 chantiers sur 2018) sur l'ensemble du territoire national.

Ses principaux marchés sont les salles de danse, les salles de sports, le médical.

 

Nous contacter sur glass@comascotec.com ou au 06 64 73 63 77 Merci

 

Banner
Banner
Banner

Glass chemical tempering

 

1/Reasons and advantages for glass chemical tempering

The chemical tempering is used when the thermal tempering meets limits.

Small glass thickness

Even if some suppliers offer now machines able to temper 2 mm thickness glass, the chemical tempering in this case give better results.

 

Curved glass

The chemical tempering is done with a temperature around 400°C which don’t change the glass geometrical shape

This is particularly important when the curved glass has to be laminated after tempering.

The optical quality

Chemical tempering gives better result than thermal tempering when a high optical quality is required.

 

When a more important hardness is required than the one the thermal tempering can supply.

With the chemical tempering it is possible to increase with a factor 4 the hardness in touch with the thermal tempering.

No surface distorsions

With chemical tempering you do not have surface distortion

Processing after tempering

One of the advantages for chemical tempering is that you can process the glass (drilling, edging, polishing, sandblasting, cutting…) after tempering. This is not possible for thermal tempering.

On another side with chemical tempering it is more difficult or even impossible to temper very large glasses, because the maximum furnaces dimensions (around 3200x2200).

More important in case the glass breaks, they remain very dangerous large glass pieces. For this reason, only glasses coming from thermal tempering can be accepted as “safety glasses”

2/Glass thermal tempering characteristics

The idea for chemical tempering (like for thermal tempering) is to put the glass surface under compression to increase strongly the hardness. In the chemical tempering case it is obtained by the migration at the glass surface (between 20 and 100 micrometers) of big potassium cations which take the cations sodium place. Sodium and calcium having similar chemical characteristics this change does not modify the glass properties.

This change is done dropping the glass inside a potassium salt bath between 12 and 20 hours. The salt bath temperature is around 400° Celcius.

Chemical tempering salt bath

 

3/Comparison between thermal and chemical tempering

 

 

Thermal tempering

Chemical tempering

Thickness (mm)

3 à 19

0.5 à 19

Surface compression ( N/mq)

30/70

300/400

Thickness for the compressed area

20% from the glass total thickness

20 to 120 microns

Flexion resistance           ( N/mq)

120/200

250/600

Pieces dimensions when glass breaks

Small pieces

Large pieces

Processing after tempering

 

No

 

Yes (cutting, drilling, edging, polishing, sandblasting…)

 

 

 

4/The main chemical markets

The cost for chemical tempering is much more important than the one for thermal tempering. So the main markets for chemical tempering are where the thermal tempering meets limits or problems.

-Small thickness

-Quality (distortion, optical quality, hardness..)

The markets for chemical tempering is in aviation, space and naval industry, automotive industry, luxury, architectural (bending) and in general when you need nos distortion.

 

5/Conclusion

Chemical tempering is another way to glass tempering, mainly when thermal tempering can bring a proper solution. But to be able to reach the quality required chemical tempering must be done in automatized furnaces and with security and checking systems to supply with productivity the high quality level required.