Quantcast
Channel: SGP – Specialist Glass Products
Viewing all articles
Browse latest Browse all 37

Heat Soak Testing

0
0

Toughened glass is a hugely popular product and SGP supply it in all forms, flat, toughened and laminated and it is used for many applications including Balustrade, canopies and partitioning.

Toughened laminated beams and roof panels External glass balustrade Curved canopy glass

On rare occasions toughened glass can break spontaneously, without any applied load, due to small Nickel Sulphide inclusions that may be present in all float glasses. These breakages can occur months or even years after installation.

When Nickel sulphide inclusions (NiS) are present, the standard toughening process changes the state of the inclusion and due to the fast cooling it cannot return back to its original form.  Over time, NiS may slowly convert to its pre-toughened form but with an increase in volume.  That increase in size can cause breakage.

Breakage in toughened glass Spontaneous breakage of toughened laminated panel Toughened glass breakage

Due to the impossibility of finding such very small inclusions, no float glass manufacturer can guarantee the complete absence of NiS inclusions in glass. As such, any breakages are not warrantied and therefore SGP recommend Heat Soak testing to BSEN 14179.

Heat Soaking is a destructive process where toughened glass is placed inside an oven and heated to 295°-300° and it remains at this temperature for 4hrs, this is to accelerate the expansion of any inclusions and cause breakage within the oven therefore reducing the risk of breakage when on site at a later date.

Here at Specialist Glass we currently have 2 Heat Soaking ovens to service our customers’ requirements. We can Heat Soak any thickness of glass in curved or flat form.

Heat soaking flat toughened glass Heat soaking oven Loading the heat soaking oven Heat soaked Curved Toughened Glass

For more information please do not hesitate to contact one of our sales team.


Viewing all articles
Browse latest Browse all 37

Latest Images

Trending Articles





Latest Images