Spontaneous breakage of tempered glass

We have porbelm with spontaneous breakage of tempered glass in our products.
I am looking for any IQC method to assure that no "possible condenders" will go into assy of the product.
Also what must be done in the production of the glass itself to assure that no spontaneous breakage will occur? How it is possible to check this during glass production.
We are NOT glass manufacturer, but using at least 100000 a year of the cut tempered glass in our products.

Guest User
Fri, 10/05/2002 - 13:11

If there are no defects, such as stones and streaks and the glass was tempered uniformly, you should not have a problem with spontaneous breakage.

Guest User
Wed, 15/05/2002 - 20:38

I wonder if you can tell me what kind of glass products you are using. Perhaps I can give you more details about how to avoid the breakage.

AMC Hornet
Fri, 17/05/2002 - 03:33

Reply to [B]mikros[/B]:

Isn't spontaneous breakage of tempered glass usually the result of NiS contaminates in the glass? If Nickel Sulfide is the cause, you can either greatly reduce the contamination, or if you can't get it down to an acceptable level, heat soaking is another answer. But for most commercial tempered glass production, spontaneous breakage is pretty rare. The degree of risk would depend on where the tempered glass is being used.

AMC Hornet
Fri, 17/05/2002 - 18:00

There is a GOW article today on NiS breakage:


There appear to be additional links with the article.

Guest User
Tue, 16/07/2002 - 11:04

GTS have significant experience with Nickel Sulphide inclusion problems in tempered glass. We have the capability to carry out fracture analysis to determine if such a defect is presnet as an origin of the failure, which is backed by analysis to prove or disprove the presence of the NiS inclusion.
This service is part of our UKAS accredited suite of services.

Please look at our website, www.glass-ts.com or contact us.

Guest User
Wed, 24/11/2004 - 14:09

The back window of our new Toyota Sequoia recently broke in the middle of the night -- not a result of a break in, just spontaneously shattered. Is there a test we can do to prove there was a manufacturer defect?

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