1、 ISO 2017 Glass in building Basic soda lime silicate glass products Part 2: Float glass Verre dans la construction Verre de silicate sodocalcique Partie 2: Glace INTERNATIONAL STANDARD ISO 16293-2 First edition 2017-03 Reference number ISO 16293-2:2017(E) ISO 16293-2:2017(E)ii ISO 2017 All rights re
2、served COPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an
3、intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyrighti
4、so.org www.iso.org ISO 16293-2:2017(E)Foreword iv 1 Scope . 1 2 Normative references 1 3 T erms and definitions . 1 4 Dimensional requirements . 3 4.1 Thickness . 3 4.1.1 General 3 4.1.2 Tolerances 3 4.2 Length, width and squareness . 4 4.2.1 Jumbo and split sizes 4 4.2.2 Supplied and final cut size
5、s 4 5 Quality requirements 5 5.1 General . 5 5.2 Methods of observation and measurement . 5 5.2.1 Optical faults 5 5.2.2 Visual faults 6 5.2.3 Edge defects for final cut sizes . 7 5.3 Acceptance levels 8 5.3.1 Optical faults 8 5.3.2 Spot faults 8 5.3.3 Linear/extended faults . 8 5.3.4 Edge defects f
6、or final cut sizes . 9 6 Designation 9 Annex A (informative) Method for measuring the halo size of spot fault .10 Bibliography .12 ISO 2017 All rights reserved iii Contents Page ISO 16293-2:2017(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of nationa
7、l standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. Internation
8、al organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended
9、for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www .iso
10、 .org/ directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document wi
11、ll be in the Introduction and/or on the ISO list of patent declarations received (see www .iso .org/ patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement. For an explanation on the voluntary nature of standards, the m
12、eaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: w w w . i s o .org/ iso/ foreword .html. The committee responsib
13、le for this document is ISO/TC 160, Glass in building, Subcommittee SC 1, Product considerations. A list of all parts in the ISO 16293 series can be found on the ISO website.iv ISO 2017 All rights reserved INTERNATIONAL ST ANDARD ISO 16293-2:2017(E) Glass in building Basic soda lime silicate glass p
14、roducts Part 2: Float glass 1 Scope This document specifies dimensional and minimum quality requirements (in respect of optical and visual faults) for float glass for use in building, as defined in ISO 16293-1. This document applies to float glass supplied in stock sizes and final cut sizes. 2 Norma
15、tive references There are no normative references in this document. 3 T erms a nd definiti ons For the purposes of this document, the terms and definitions given in ISO 16293-1 and the following apply. ISO and IEC maintain terminological databases for use in standardization at the following addresse
16、s: IEC Electropedia: available at h t t p :/ www .electropedia .org/ ISO Online browsing platform: available at h t t p :/ www .iso .org/ obp 3.1 length H dimension of the straight edge of the glass parallel to the direction of draw of the glass ribbon Note 1 to entry: See Figure 1. SOURCE: ISO 1148
17、5-1:2011, 2.26, modified l H B Key l direction of draw H length B width Figure 1 Relationship between length, width and direction of draw ISO 2017 All rights reserved 1 ISO 16293-2:2017(E) 3.2 width B dimension of the edge of the glass perpendicular to the direction of the glass ribbon Note 1 to ent
18、ry: See Figure 1. 3.3 stock sizes glass sizes that are intended to be re-cut to obtain final cut sizes (3.7) Note 1 to entry: Stock sizes can be jumbo sizes, split sizes or supplied sizes. 3.4 jumbo sizes glass delivered in the following sizes:Nominal length H: 4 500 mm, 5 100 mm or 6 000 mm;Nominal
19、 width B: 3 210 mm Note 1 to entry: The usual width is 3 210 mm. Exceptional production requirements can cause this to be reduced, but the nominal width is never below 3 150 mm. Note 2 to entry: The usual maximum length is 6 000 mm. Oversize plates where the nominal length, H, is greater than 6 000
20、mm, can be produced to special order. 3.5 split sizes glass delivered in the following size ranges:Nominal length H: 1 000 mm to 2 550 mm;Nominal width B: 3 210 mm Note 1 to entry: The usual width is 3 210 mm. Exceptional production requirements can cause this to be reduced, but the nominal width is
21、 never below 3 150 mm. 3.6 supplied size pane of glass that has been supplied as raw material for cutting down to a size for installation, delivered in the following size ranges:Nominal length H: any;Nominal width B: 3 210 mm Note 1 to entry: In some cases, nominal width can be B 3 810 mm 3.7 f i n
22、a l c u t s i z e pane of glass that has been cut down to the dimensions being required either for installation or processing into a final product, e.g. insulating glass units, thermally toughened safety glass, of those dimensions Note 1 to entry: The minimum final cut size shall have dimensions H o
23、r B not less than 100 mm and a minimum surface area of not less than 0,05m 2 . 3.8 optical faults faults which lead to distortions in the appearance of objects observed through the glass2 ISO 2017 All rights reserved ISO 16293-2:2017(E) 3.9 visual faults faults which alter the visual quality of the
24、glass Note 1 to entry: Visual faults include spot faults and linear/extended faults. 3.10 spot fault defect in the glass having a limited size and being composed of a nucleus, which can be accompanied by a halo (3.11) of distorted glass 3.11 halo area of glass locally distorted, generally around a n
25、ucleus 3.12 linear/extended faults faults which can be on or in the glass, in the form of deposits, marks or scratches that occupy an extended length or area 3.13 edge defect defect which can occur on the edge of a glass sheet in the form of entrant and emergent faults and/or bevels 4 Dimensional re
26、quirements 4.1 Thickness 4.1.1 General The actual thickness shall be the average of four measurements, taken to the nearest 0,01 mm, one taken at the centre of each side. Measurement shall be by means of an instrument of the calliper micrometre type. 4.1.2 Tolerances All four measurements, rounded t
27、o the nearest 0,1 mm, shall not vary from the nominal thickness by more than the tolerances shown in Table 1. NOTE For the thicknesses not described in Table 1, the tolerance of the nominal thickness immediately lower shall apply. For nominal thickness 2 mm, the tolerance is 0,1 mm. ISO 2017 All rig
28、hts reserved 3 ISO 16293-2:2017(E) Table 1 Tolerances on nominal thickness Nominal thickness (mm) Tolerances (mm) 2 0,2 3 0,3 4 0,3 5 0,3 6 0,3 8 0,6 10 0,6 12 0,8 15 0,8 19 1,2 22 1,2 25 1,2 4.2 Length, width and squareness 4.2.1 Jumbo and split sizes The tolerances on nominal dimensions length, H,
29、 and width, B, for jumbo and split sizes are 5 mm. The limits of squareness are described by the difference between diagonals. Limits are given in Table 2. Table 2 Limit on the difference between diagonals for jumbo and split sizes Dimensions in millimetres Nominal thickness Limit on the difference
30、between diagonals Jumbo sizes Split sizes (H, B) 1500 1500 3000 2, 2,5, 2,7, 3, 4, 5, 6 10 3 4 5 8, 10, 12 10 4 5 6 15, 19, 22, 25 10 5 6 8 4.2.2 Supplied and final cut sizes The tolerances on nominal dimensions length, H, and width, B, for supplied and final cut sizes are given in Table 3. The limi
31、ts of squareness are described by the difference between diagonals. Limits are given in Table 4.4 ISO 2017 All rights reserved ISO 16293-2:2017(E) Table 3 Tolerance, t , o n t h e n o minal dim e nsi o ns l e ng t h an d w i dt h fo r su p p li ed an d f inal cut sizes Dimensions in millimetres Nomi
32、nal thickness Tolerance, t Supplied size Final cut sizes (H, B) 3 000 (H, B) 3 000 2, 2,5, 2,7, 3, 4, 5, 6 4 2 3 8, 10 4 3 4 12, 15 4 3 4 19, 22, 25 5 5 5 T a b l e 4 L i m i t o n t h e d i f f e r e n c e b e t w e e n d i a g o n a l s f o r s u p p l i e d a n d f i n a l c u t s i z e s Dimensi
33、ons in millimetres Nominal thickness Limit on the difference between diagonals S u p p l ie d a nd f i n a l c u t s i z e s (H, B) 1 500 1500 3 000 2, 2,5, 2,7, 3, 4, 5, 6 3 4 5 8, 10, 12 4 5 6 15, 19, 22, 25 5 6 8 5 Quality requirements 5.1 General One quality level is considered in this document.
34、 This is determined by evaluation of the optical and visual faults. The manufacturer(s) should be consulted if higher levels of quality are required. 5.2 Methods of observation and measurement 5.2.1 Optical faults A screen bearing an assembly of black and white stripes (zebra) is observed through th
35、e glass to be examined. The usual size of screen is between 1 500 mm 1 150 mm and 2 500 mm 2 000 mm. It consists of a translucent white background with parallel black stripes, 25 mm wide and 25 mm apart, inclined at 45. The screen is uniformly lit from behind with white daylight fluorescent tubes. T
36、he illuminance of the screen measured 1 m from it shall be between 400 lux and 1 200 lux. The measurement shall be taken at a point on a line normal to the centre of the screen. The walls of the test room should be painted with a dark non-reflective paint having a diffuse reflection 0,10. The glass
37、to be examined shall be held vertically in a support frame. The centre of the glass shall be at a distance of 4,5 m from the screen and on a line normal to the centre of the screen. The glass shall be capable of being rotated around a vertical axis. The glass shall be held with the direction of draw
38、 of the glass vertical. Appropriate critical viewing angles, , formed by the glass and the screen should be indicated (see Figure 2). The observer stands still at a distance of 9 m from the centre of the screen on a line passing through the axis of rotation. The glass being examined is rotated from
39、an angle = 90 until there is no longer any distortions of the lines on the screen. The angle, (see Figure 2), at which this occurred is noted. ISO 2017 All rights reserved 5 ISO 16293-2:2017(E) For stock sizes, the glass samples are obtained by splitting the full width of the pane into pieces with a
40、 width, B, of about 800 mm, and a length, H, between 300 mm and 500 mm. The distortion is measured in the areas D and d as shown in Figure 3. The distortion of the final cut sizes shall use the data of stock sizes. However, when the data does not exist, the sample shall be evaluated by the method of
41、 Figure 2. B A C Key A screen B glass sample C observer Figure 2 Plan view showing set up of zebra test B D d d Key B width (approximately 800 mm) d measurement zone D measurement zone Figure 3 Zones for the measurement of optical distortion 5.2.2 Visual faults 5.2.2.1 Spot faults Conditions of obse
42、rvation of spot faults are described in Annex A. The categories of spot faults are defined by the maximum dimension (diameter or length) of the halo or of the nucleus. The nucleus dimensions are measured with a micrometre with graduations in tenths of a millimetre, and the halo dimension is measured
43、 according to the method defined in Annex A. Note the number of spot faults and the biggest dimension of the halo or of the nucleus and relate to the four categories of spot faults as shown in Table 5.6 ISO 2017 All rights reserved ISO 16293-2:2017(E) Table 5 Categories of spot faults Nucleus dimens
44、ion Halo dimension 1,0 mm 3,0 mm 1,0 mm and 2,0 mm 3,0 mm and 6,0 mm 2,0 mm and 3,0 mm 6,0 mm and 9,0 mm 3,0 mm 9,0 mm NOTE In some circumstances, if not possible to measure the halo, then only the nucleus size has to be measured. 5.2.2.2 Linear/extended faults The glass pane to be examined is illum
45、inated in conditions approximating to diffuse daylight and is observed in front of a matt black screen (reflection coefficient between 0,2 and 0,4). Place the pane of glass to be examined vertically in front of the screen and parallel to it. Arrange the point of observation 2 m from the glass, keepi
46、ng the direction of observation normal to the glass surface. View the pane of glass, and note the presence of visually disturbing faults. 5.2.3 E dge defects for final cut sizes 5.2.3.1 Entrant and emergent faults These faults are shown in Figures 4 and 5. The dimensions h 1 , h 2and p and the glass
47、 thickness, e, are measured. h h h Figure 4 Entrant and emergent faults (surface view) p e h Figure 5 Entrant faults (edge view) ISO 2017 All rights reserved 7 ISO 16293-2:2017(E) 5.2.3.2 Bevel This fault is shown in Figure 6. The dimension, d, and the glass thickness, e, are measured. e d e d Figur
48、e 6 Bevel (edge view) 5.3 Acceptance levels 5.3.1 Optical faults When viewed under the conditions of observation as described in 5.2.1, the angle, , at which there is no disturbing distortion shall be not less than the appropriate critical viewing angle given in Table 6. Table 6 Critical viewing ang
49、les Nominal thickness in mm Angle, , in zone, D, in degrees Angle, , in zone, d, in degrees 1,9, 2, 2,5, 2,7 40 40 3 45 40 4 50 45 5.3.2 Spot faults The allowable numbers for each of the categories of faults (see Table 5) for stock sizes and final cut sizes are shown in Table 7, using the nucleus or the halo dimension as acceptance criteria. T a b l e 7 A l l o w a b l e n u m b e r s o f f a u l t s f o r s t o c k s i z e s a n d f i n a l c u t
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