ISO 20657-2017 Glass in building - Heat soaked tempered soda lime silicate safety glass《建筑用玻璃 热浸钠钙硅酸盐钢化安全玻璃》.pdf
《ISO 20657-2017 Glass in building - Heat soaked tempered soda lime silicate safety glass《建筑用玻璃 热浸钠钙硅酸盐钢化安全玻璃》.pdf》由会员分享,可在线阅读,更多相关《ISO 20657-2017 Glass in building - Heat soaked tempered soda lime silicate safety glass《建筑用玻璃 热浸钠钙硅酸盐钢化安全玻璃》.pdf(58页珍藏版)》请在麦多课文档分享上搜索。
1、 ISO 2017 Glass in building Heat soaked tempered soda lime silicate safety glass Verre dans la construction Verre de scurit de silicate sodocalcique tremp et trait INTERNATIONAL STANDARD ISO 20657 First edition 2017-03 Reference number ISO 20657:2017(E) ISO 20657:2017(E)ii ISO 2017 All rights reserv
2、ed 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 intr
3、anet, 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 copyrightiso.o
4、rg www.iso.org ISO 20657:2017(E)Foreword v Introduction vi 1 Scope . 1 2 Normative references 1 3 T erms and definitions . 1 4 Glass products . 3 5 Manufacturing processes. 3 5.1 General . 3 5.2 Tempering process 3 5.3 Heat soak process cycles 4 5.3.1 Off-line process . 4 5.3.2 In-line process 7 6 F
5、racture characteristics 8 6.1 General . 8 6.2 Accidental human impact 8 6.3 Fragmentation . 8 7 Dimensions and tolerances . 9 7.1 Nominal thickness and thickness tolerances 9 7.2 Width and length (sizes) 9 7.2.1 General 9 7.2.2 Maximum and minimum sizes 10 7.2.3 Tolerances and squareness 10 7.2.4 Ed
6、ge deformation produced by vertical tempering .11 7.3 Flatness .11 7.3.1 General.11 7.3.2 Measurement of overall bow 13 7.3.3 Measurement of wave or roller wave distortion .14 7.3.4 Measurement of edge lift (only for heat soaked tempered safety glass which was horizontally tempered) .15 7.3.5 Measur
7、ement of perimeter deformation of glass produced by air cushion tempering process .16 7.3.6 Measurement of local distortion (only for heat soaked tempered safety glass which was vertically tempered) 16 7.3.7 Limitation on overall bow, roller waves and edge lift for heat soaked tempered safety glass
8、which was horizontally tempered .17 7.3.8 Limitation on overall bow, wave and perimeter deformation for heat soaked tempered safety glass manufactured by air cushion process .18 7.3.9 Limitation on overall bow and local distortion for heat soaked tempered safety glass which was vertically tempered 1
9、8 7.3.10 Other distortions 18 8 Edge work, holes, notches and cut-outs.19 8.1 General 19 8.2 Edge working of glass for tempering 19 8.3 Profiled edges20 8.4 Round holes 20 8.4.1 General.20 8.4.2 Diameter of holes .20 8.4.3 Limitations on position of holes 20 8.4.4 Tolerances on hole diameters 21 8.4
10、.5 Tolerances on position of holes 22 8.5 Holes/others 23 ISO 2017 All rights reserved iii Contents Page ISO 20657:2017(E)8.6 Notches and cut-outs 23 8.7 Shaped panes .23 9 Fragmentation test 23 9.1 General 23 9.2 Dimensions and number of test specimens 23 9.3 Test procedure 24 9.4 Assessment of fra
11、gmentation 24 9.5 Minimum values from the particle count 25 9.6 Selection of the longest particle 25 9.7 Maximum length of longest particle 25 9.8 Test Report 26 10 Other physical characteristics .26 10.1 Optical distortion .26 10.1.1 Heat soaked tempered safety glass produced by vertical tempering
12、26 10.1.2 Heat soaked tempered safety glass produced by horizontal tempering 26 10.2 Anisotropy (iridescence) .26 10.3 Thermal durability 26 10.4 Mechanical strength 27 10.5 Surface pre-stress 27 11 Marking .27 12 Packaging 28 Annex A (informative) Pendulum impact test methods 29 Annex B (informativ
13、e) Alternative method for the measurement of roller wave distortion 30 Annex C (informative) Example of particle count 32 Annex D (informative) Method for the measurement of the surface pre-stress of heat soaked tempered safety glass 34 Annex E (informative) In-line heat soak process control .36 Ann
14、ex F (informative) Heat soak process system calibration test .38 Bibliography .48 iv ISO 2017 All rights reserved ISO 20657:2017(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Inte
15、rnational 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. International organizations, governmental and non-governmental, in liaison wi
16、th 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 for its further maintenance are described in the ISO/IEC Directive
17、s, 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 .org/ directives). Attention is drawn to the possibility that som
18、e 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 will be in the Introduction and/or on the ISO list of patent declara
19、tions 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 meaning of ISO specific terms and expressions related to conformity
20、 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. This document was prepared by Technical Committee ISO/TC 160, Glass in building, Subcommi
21、ttee SC 1, Product considerations. ISO 2017 All rights reserved v ISO 20657:2017(E) Introduction Heat soaked tempered soda lime silicate safety glass has a safer breakage behaviour when compared with annealed glass. This behaviour is a direct result of the high surface pre-stress. It also has a know
22、n level of residual risk of spontaneous breakage arising from the possible presence of critical nickel sulfide (NiS) inclusions in the thermally toughened soda lime silicate glass. Heat soaked tempered soda lime silicate safety glass has a known behaviour under accident human impact together with kn
23、own mechanical and thermal stress resistance. Other requirements, not specified in this document, can apply to heat soaked tempered soda lime silicate safety glass which is incorporated into assemblies, e.g. laminated glass or insulating glass units, or undergo an additional treatment, e.g. coating.
24、 The additional requirements are specified in the appropriate glass product standard. Heat soaked tempered soda lime silicate safety glass, in this case, does not lose its mechanical or thermal characteristics. NOTE 1 ISO/TC 160/SC 2 is producing standards for the determination of the design strengt
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