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Heat Soak Tested Tempered glass are of self-explosion proof/spontaneous broken ,perfectly for high safety pool fence ,balustrade, ceilling ,floor ,building wall screen etc.
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.
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.
Specification
| Thickness | 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 15mm, 19mm,22mm,25mm. |
| Color | clear, ultra clear, tinted grey/ blue/green/ bronze |
| Glass type | reflective glass, low-e glass, tinted glass, acid etched glass, silk-screen printed glass, patterned glass |
| Flat tempered | maximum size: 11000*3000mm(more than 10mmthick), Minimum size: 150*100mm |
| Bent tempered | max.size 3300*6000,Radius >400mm |
| Edge work | polishing ege: flat /pencil /bevel/ogee , conrner: safe/round /cut C corner are available |
| Acurate processing | hole,cutout,carve by water jet or CNC, size and location tolerance less than 0.5mm |
| Package | strong wood cases suitable for sea and land transportation |
| Quality standard and certificate | Chinese CCC, Australian certificate, CE certificate, U. S. A certificate |
| Application | Building: window door /balcony/ balustrade/ floor/ ceiling /stair/curtain wall/swimming pool etc. |
Main producing machines and equipments advanced tempering machines
Advance ege polished machine
Who We Are?
Our glass factory was founded in 1985, 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
Our Glass Types
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.
Our Producing Machines
We have complete and advanced equipments and machines for making glass.They are imported from USA, Italy Bottero,
Finland Tamglass, South Korea Ekang etc.
Our Quality Standard
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.
Our Markets
With high-grade quality and good controlling system, the products have been exported to USA, Australia, New Zealand,
U. K., EU countries(Holland, Norway, Germany, UK etc.),Japan, South Africa and Singapore,Middle East
Our Service
Our sales team is always offering excellent service for our customers. Every detail must receive our full attention.
Every personalized requirement must receive our utmost efforts. Every confusion and difficulty must receive our corresponding solution.
Our Aim
With professional production and service, we are dedicated to have all your business and purchasing much more smooth , easy and make big money.
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