How do you test a heat soak?
How do you test a heat soak?
Heat soak testing is a destructive test. Tempered Glass is put into a heat Soak Oven and brought to and held at a temperature of 555 degrees Farenheit for two hours. Most glass containing Nickel Sulphide will shatter during this process and thus be eliminated from the glass project.
What is heat soaked tempered glass?
Heat soaking is a process utilized to expose NiS inclusions in tempered glass before the glass reaches the field. It involves placing tempered glass inside a chamber and raising the temperature to approximately 290°C to accelerate the nickel sulfide expansion.
Why is glass heat soaked?
Why do we heat soak? Heat soaking helps to identify any impurities in the glass during the process. Panels containing nickel sulfide are more likely to break during this process.
Whats heat soak?
In vague terms heat soak simply refers to some part of the engine – or the engine as a whole – getting too hot. Combustion engines produce a lot of heat and that heat has to go somewhere. It soaks into metals and fluids.
Is all tempered glass heat soaked?
To mitigate the risk of breakage, fully tempered glass can be heat soak tested. This document outlines the process and benefits associated with heat soak testing. Fully tempered glass may break without warning due to the expansion of nickel sulfide inclusions present within float glass.
What is HST in glass?
HST (Heat Soak Testing) is a test developed to cause breakage of toughened glass in a test oven, reducing the risk of breakage in situ. The process puts the glass through a heat cycle to encourage the glass to break under test if it is at risk of critical inclusions.
Where can I use heat soaked glass?
Heat Soaked Glass can be specified for any installation of architectural glazing. However, it has more value in glass installations that may be difficult to access or replace once construction is completed.
How long does heat soak take?
As the coolant is no longer being circulated, the engine block and cylinder temperature increase for a period of approximately 3 to 10 minutes, depending on the engine design and additional components. During this time, the engine block radiates heat to the air surrounding the engine, which slowly cools the engine.
How long does it take to temper glass?
about 2-25 minutes
The temperatures changes depending on the thickness of the glass, color of the glass or even the temperature outside. The tempering process takes about 2-25 minutes.
Can you heat soak heat-strengthened glass?
Guardian offers SunGuard® coated glass products that can be safely heat soaked if it is determined the heat-soaking process is necessary. Heat-strengthened glass has a much lower potential incidence of spontaneous breakage than tempered glass.
Does toughened glass need to be heat soaked?
Heat soaking significantly reduces the risk of spontaneous breakage ‘in situ’ of thermally toughened safety glass, and is estimated to eliminate up to 98% of toughened glass panels from production that have potential for spontaneous breakages.
