Double Glazing Heat Soak Tested Glass

• Shape: Flat
• Usage: Building, Furniture
• Transport Package: Wooden Case
• Trademark: yilin
• Origin: Suzhou City, China
• HS Code: 70072900
• Production Capacity: 2000sq. Ms Per Day

Product Description

What's the reason for Heat Soaking

To minimise the risk of spontaneous tempered glass breakage due to nickel sulphide inclusions within the glass installed in a building.

What is Nickel Sulphide (NiS) and how does it get into the glass?
NiS is a source of metallic nickel found to be largely from steel used in handling the processing of the float batch material(when the glass was being created from sand and other materials). Within the glass it is an inclusion which is barely visible to the human eye and can only generally be seen after the glass has broken (within a laminate panel makeup).

How does something so small break  big glass panel?

Nis only effects Tempered glass (not annealed). This is due to the tempering process of glass. During tempering the glass is heated to 1148F followed by rapid cooling. If there is NiS in the glass it actually shrinks at the high temperature but the cooling phase of tempering is too fast to allow the NiS to revert back to its normal state and "freezes" the NiS in an unstable state.

Over time the NiS reverts back or expands back to its stable state creating huge stress, without any load or at any time the glass can break. Tempered glass breaks at 3000mph due to the huge internal stresses of 10,000 lbs per square inch.

What is Heat Soak Testing

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.

It has been concluded that the incident of critical NiS inclusions is, on average:

1 inclusion in 11,000lbs of glass for ordinary tempered glass EN12150  (nearest equivalent ASTM C1048)

1 inclusion in 882,000lbs of glass for heat soak tempered glass to EN 14179.

Over the years, We have recognised the demand by the architectural community to heat soak test glass to ensure a quality glass product. For this reason we presently have 2 Heat soak ovens with another oven purchased and being installed by end of 2009/early 2011.

 

How to identify that  the glass is heat soaked ?
As an extra quality assurance at our factory, we also use a UV pen that we mark all glass destined for the heat soak process. On the corner of every unit beside the heat soak stamp the letters or code is hand written. During the heat soak process this mark is baked into the glass. It leaves a permanent invisible mark on the glass that can only be viewed under a black light.





For exaple, Heat Soak Testing Report    (we issued)        

Customer  PDS IMPORTS               Report  No. 11TC11/BWA 02      Order  No.  PDS 512  PDS516       
Testing Date      2011-5-2  18:25  ( start )       2011-5-3    7:25   ( end )
New panels hst  because of  broken panels
 

Drawing No.	PCS	H		W		Drawing No.	PCS	H	W
Drawing 1	1	1050		1072		Drawing 3	2	430	1317
	2	1050		1200			2	430	1272
	2	1050		1203			1	430	1124
	1	1050		1359			1	430	1187
	1	1050		1581			1	430	1207
Drawing 2	1		1050		270		1	430	1135

 Specifications of Heat Soak Tested Glass 

thickness	3mm,4mm,5mm,6mm,     8mm, 10mm, 12mm, 15mm
color	ultra clear, normal clear ,tinted etc.
flat toughened	Maximum size: 11000*3000mm(more than 10mmthick), Minimum size: 300*300mm
bent toughened	Maximum arc length: 3660(arc length)*3000mm(Height) Minimum size: 500*300mm, Thickness: from 6mm to 19 mm
glass type	laminated hst glass, double glazed hst glass,color painted hst glass etc.
special processing	hole drilling,cutout, heat soak tested
package	Strong wood cases or iron crate, or customized packing available
certificate	Chinese CCC, Australian certificate, CE certificate, U. S. A certificate

Double  glazing glass  is manufactured by fusing together 2 panes ,spaced by dry air or argon gas. It is with exellent solar heat insulation property which greatly reduces cooling or heating loads and make building looks colorful and beautiful. 
air spacer frame , 6mm.9mm,12mm,15mm,16mm,19mm,20mm,21mm,25mm

Various Types Available



Project Cases & Application





Overview of Factory & Workshop






FACTORY INTRODUCTION

Our glass factory was founded in 2000, now it is leading glass manufacturer in China. We have three workshops, and are specialized in manufacturing building glass, household appliances glass, with annual producing capability of 750, 000sq. Meters 

For Building Glass, they are toughened glass, laminated glass, insulated glass, acid itched glass, heat soak tested glass, silk-screen printed glass. They are used for swimming pool fence, shower screen, balustrade, balcony, winds, doors, glass wall, glass table, elevator and so on. 
For Household Appliance Glass, they are furniture glass for door, table, TV crack, microwave oven door glass, cooktop glass, range hood glass. 
We have complete and advanced equipments and machines for making glass. They are imported from USA, Italy Bottero, Finland Tamglass, South Korea Ekang etc. The products have been certificated and approved by AS/NZS 2208: 1996, ISO9002, SGCC: ANSI Z97.1 CPSC 16 CFR 1201, TNO: EN12150, CCC(3C), etc. With high-grade quality and good controlling system, the products have been exported to USA, Australia, New Zealand, U. K., Holland, Norway, Germany, Japan, South Africa and Singapore.