This European Standard specifies the heat soak process system together with tolerances flatness, edgework, fragmentation and physical and mechanical characteristics of monolithic flat heat soaked thermally toughened alkaline earth silicate safety glass for use in buildings. Information on curved heat soak thermally toughened alkaline earth silicate safety glass is given in Annex B, but this product does not form part of this document.<\/p>\n
Other requirements, not specified in this document, can apply to heat soaked thermally toughened alkaline earth silicate safety glass which is incorporated into assemblies, e.g. laminated glass or insulating units, or undergo an additional treatment, e.g. coating. The additional requirements are specified in the appropriate product standard EN 15682-2. In this case, heat soaked thermally toughened alkaline earth silicate glass does not lose its mechanical or thermal characteristics.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 6<\/td>\n | Foreword <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | Introduction <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 4 Glass products 5 Manufacturing processes 5.1 General 5.2 Toughening process 5.3 Heat soak process cycle 5.3.1 General <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | Figure 1 \u2014 Heat soak process cycle 5.3.2 Heating phase 5.3.3 Holding phase 5.3.4 Cooling phase <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 6 Heat soak process system 6.1 General 6.2 Oven 6.3 Glass support 6.4 Glass separation <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | Figure 2 \u2014 Example of a vertical glass support Figure 3 \u2014 Recommend separation between glass <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 6.5 Calibration 7 Fracture characteristics 8 Dimensions and tolerances 8.1 Nominal thickness and thickness tolerances Table 1 \u2014 Nominal thicknesses and thickness tolerances 8.2 Width and length (sizes) 8.2.1 General <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | Figure 4 \u2014 Examples of width, B, and length, H, relative to the pane shape 8.2.2 Maximum and minimum sizes 8.2.3 Tolerances and squareness Figure 5 \u2014 Tolerance limits for dimensions of rectangular panes <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | Table 2 \u2014 Tolerances on width, B, and length, H 8.2.4 Edge deformation produced by vertical toughening Figure 6 \u2014 Tong mark deformation 8.3 Flatness 8.3.1 General <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 8.3.2 Measurement of overall bow Figure 7 \u2014 Representation of overall and local bow <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | Figure 8 \u2014 Support conditions for the measurement of overall bow 8.3.3 Measurement of local bow 8.3.4 Limitation on overall and local bow Table 3 \u2014 Maximum values for overall and local bow <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 9 Edge work, holes, notches and cut-outs 9.1 Warning 9.2 Edge working of glass for toughening Figure 9 \u2014 Arrissed edge (with blank spots) Figure 10 \u2014 Ground edge (with blank spots) Figure 11 \u2014 Smooth ground edge (no blank spots) Figure 12 \u2014 Polished edge 9.3 Profiled edges <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | 9.4 Round holes 9.4.1 General 9.4.2 Diameter of holes 9.4.3 Limitations on position of holes Figure 13 \u2014 Relationship between hole and edge of pane <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Figure 14 \u2014 Relationship between two holes Figure 15 \u2014 Relationship between hole and corner of pane 9.4.4 Tolerances on hole diameters Table 4 \u2014 Tolerances on hole diameters <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 9.4.5 Tolerances on position of holes Figure 16 \u2014 Examples of the positioning of holes relative to the datum point 9.5 Notches and cut-outs <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Figure 17 \u2014 Examples of notches and cut-outs 9.6 Shaped panes 10 Fragmentation test 10.1 General 10.2 Dimensions and number of test specimens 10.3 Test procedure <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | Figure 18 \u2014 Position of impact point 10.4 Assessment of fragmentation <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | Figure 19 \u2014 Area to be excluded from the particle count determination and largest particle measurement Figure 20 \u2014 Examples of crack-free particles and the assessment regarding the number 10.5 Minimum values from the particle count Table 5 \u2014 Minimum value of particle count <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 10.6 Selection of the longest particle 10.7 Maximum length of longest particle 11 Other physical characteristics 11.1 Optical distortion 11.1.1 Heat soaked thermally toughened alkaline earth silicate safety glass produced by vertical toughening 11.1.2 Heat soaked thermally toughened alkaline earth silicate safety glass produced by horizontal toughening 11.2 Anisotropy (iridescence) 11.3 Thermal durability 11.4 Mechanical strength <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | Table 6 \u2014 Minimum values for the mechanical strength of heat soaked thermally toughened alkaline earth silicate safety glass 11.5 Classification of performance under accidental human impact 12 Marking <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | Annex A (normative) Heat soak process system calibration test A.1 Calibration criteria Figure A.1 \u2014 Time\/temperature regime as calibration criteria A.2 Loading of oven and position for glass surface temperature measurement <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | A.3 Procedure <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | A.4 Records A.5 Interpretation of the calibration test <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | Figure A.3 \u2014 1st category \u2013 1 stillage \u2013 10 % load <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | Figure A.4 \u2014 2nd category \u2013 2 mono side stillages \u2013 full load <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | Figure A.5 \u2014 2nd category \u2013 2 mono side stillages \u2013 10 % load <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | Figure A.6 \u2014 2nd category \u2013 2 double sided stillages \u2013 full load <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | Figure A.7 \u2014 2nd category \u2013 2 double sided stillages \u2013 10 % load <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | Figure A.8 \u2014 3rd category \u2013 6 or 8 or 9 … stillages \u2013 full load <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | Figure A.9 \u2014 3rd category \u2013 6 or 8 or 9 … stillages \u2013 10 % load <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | Annex B (informative) Curved heat soaked thermally toughened alkaline earth silicate safety glass <\/td>\n<\/tr>\n | ||||||
| 39<\/td>\n | Annex C (informative) Examples of particle count Figure C.1 \u2014 Example of selecting the area of coarsest fracture <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | Figure C.2 \u2014 Example of marking and counting the perimeter fragments <\/td>\n<\/tr>\n | ||||||
| 41<\/td>\n | Figure C.3 \u2014 Example for marking and counting of overall particle count for the specimen <\/td>\n<\/tr>\n | ||||||
| 42<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Glass in building. Heat soaked thermally toughened alkaline earth silicate safety glass – Definition and description<\/b><\/p>\n |