1、BS EN ISO 19496-1:2017Vitreous and porcelain enamels TerminologyPart 1: Terms and definitions (ISO 19496-1:2017)BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN ISO 19496-1:2017 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of E
2、N ISO 19496-1:2017. It supersedes BS EN 15826:2009 which iswithdrawn.The UK participation in its preparation was entrusted to Technical Committee STI/36, Vitreous enamel coatings.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does n
3、ot purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2017.Published by BSI Standards Limited 2017ISBN 978 0 580 91307 5 ICS 01.040.25; 25.220.50 Compliance with a British Standard cannot confer immunity
4、 from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2017.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 19496-1 March 2017 ICS 01
5、.040.25; 25.220.50 Supersedes EN 15826:2009English Version Vitreous and porcelain enamels - Terminology - Part 1: Terms and definitions (ISO 19496-1:2017) Emaux vitrifis - Terminologie - Partie 1: Termes et dfinitions (ISO 19496-1:2017) Emails und Emaillierungen - Terminologie - Teil 1: Begriffe (IS
6、O 19496-1:2017) This European Standard was approved by CEN on 8 March 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and biblio
7、graphical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsi
8、bility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republ
9、ic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE
10、 NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 19496-1:2017 EBS EN ISO 19496-1:2017EN ISO 19496-1:2017 (E) 3 E
11、uropean foreword This document (EN ISO 19496-1:2017) has been prepared by Technical Committee ISO/TC 107 “Metallic and other inorganic coatings” in collaboration with Technical Committee CEN/TC 262 “Metallic and other inorganic coatings, including for corrosion protection and corrosion testing of me
12、tals and alloys” the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2017, and conflicting national standards shall be withdrawn at the latest by Sep
13、tember 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 15826:2009. According to the CEN-CENELEC Inte
14、rnal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, I
15、reland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 19496-1:2017 has been approved by CEN as EN ISO 19496-1:2017 without any modi
16、fication. BS EN ISO 19496-1:2017ISO 19496-1:2017(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 1Annex A (normative) Cross reference index of alternative terms.26 ISO 2017 All rights reserved iiiContents PageBS EN ISO 19496-1:2017ISO 19496-1:2017(E)ForewordISO (the Interna
17、tional Organization for Standardization) is a worldwide federation of national 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 be
18、en established has the right to be represented on that committee. International 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 stan
19、dardization. The procedures used to develop this document and those intended 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 accord
20、ance with the editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .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. Detai
21、ls of any patent rights identified during the development of the document will 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
22、endorsement. For an explanation on the voluntary nature of standards, the meaning 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 foll
23、owing URL: www .iso .org/ iso/ foreword .html.This document was prepared by Technical Committee ISO/TC 107, Metallic and other inorganic coatings.A list of all parts in the ISO 19496 series can be found on the ISO website.iv ISO 2017 All rights reservedBS EN ISO 19496-1:2017INTERNATIONAL STANDARD IS
24、O 19496-1:2017(E)Vitreous and porcelain enamels Terminology Part 1: Terms and definitions1 ScopeThis document defines a number of terms relating to vitreous and porcelain enamels and their technology. This list is not complete and only comprises those terms for which the definition is considered nec
25、essary for correct and adequate understanding in order to clarify these processes.The interpretations given are those corresponding to the practical usage in this field and they do not necessarily coincide with those used in other fields.For purposes of clarification, the term “vitreous enamel”, use
26、d throughout this document, is synonymous with “porcelain enamel”, the term favoured in the United States and some other countries.2 Normative referencesThere are no normative references in this document.3 Terms and definitionsISO and IEC maintain terminological databases for use in standardization
27、at the following addresses: IEC Electropedia: available at h t t p :/ www .electropedia .org/ ISO Online browsing platform: available at h t t p :/ www .iso .org/ obpNOTE Annex A lists alternative terms and cross refers to primary terms used below.3.1abrasive blastingprocess for cleaning (3.44) or f
28、inishing by means of an abrasive directed at high velocity against the work piece3.2abrasion resistancedegree of resistance of vitreous enamel (3.255) to be abraded by solid materials3.3acid resistancedegree of resistance of vitreous enamel (3.255) to attack by acidic corrosive chemicals3.4adherence
29、adhesiondegree of bonding between the fused vitreous enamel (3.255) and the metallic substrate3.5adherence of powderability of a vitreous enamel powder to remain attached by static attraction to a grounded substrate (3.242) before firing (3.111) ISO 2017 All rights reserved 1BS EN ISO 19496-1:2017IS
30、O 19496-1:2017(E)3.6ageingchange in properties of vitreous enamel slips, powders, reagents, or steel with the lapse of time3.7air sealair curtainflow of pressurized air across the entrance and exit of a continuous furnace (3.53) that prevents heat escaping from the furnace but allows ware to pass th
31、rough3.8alkali degreasingremoval of oil, grease, lubricants, and loose debris from the surface of the metallic substrate by immersion or spraying with an aqueous alkali degreaser in preparation for vitreous enamelling (3.256)3.9alkali resistancedegree of resistance of vitreous enamel (3.255) to atta
32、ck by alkaline corrosive mediums3.10aluminium enamelvitreous enamel (3.255) specifically formulated for application on aluminium substrates3.11annealannealingthermal treatment of metals generally made by controlled heating and subsequent coolingNote 1 to entry: Raw castings are heated in the range f
33、rom 650 C to 950 C to relieve stresses and strains, burn off grease and in some cases to change the structure of the iron and in so doing improve the castings condition prior to coating with vitreous enamel.3.12anti-scale compoundagent that is applied to furnace tooling and other items to protect th
34、em from scaling (3.210) during firing (3.111)3.13back emissionback ionizationdefect often with the appearance of localized, very heavy orange peel (3.160), due to excessive charge build-up in the powder film resulting in electrical breakdown of air (i.e. back emission)Note 1 to entry: The effect of
35、the self-limiting characteristics of the electrostatic powder during application.3.14ball millceramic or ceramic-lined rotating cylinder in which vitreous enamel materials are either wet or dry ground, generally using alumina, porcelain or steatite balls as grinding media3.15batch smelterdiscontinuo
36、us smeltersmelter which is charged, fired, and discharged according to a predetermined periodic cycle3.16beaddefect resulting from accumulation of vitreous enamel (3.255) usually at the point where the enamel drains off the ware in dipping (3.78) (3.79)2 ISO 2017 All rights reservedBS EN ISO 19496-1
37、:2017ISO 19496-1:2017(E)3.17beadingrim enamellingapplication of ridge of vitreous enamel (3.255) along the edge or rim of ware3.18beading enamelrim enamelvitreous enamel (3.255) specifically formulated for beading (3.17)3.19biocideanti-bacterial agent used to inhibit fermentation of organic mill add
38、itions (3.150) such as gums3.20bisquedry unfired vitreous enamel coating3.21black specksdefect that appears as black particles at the surface of vitreous enamel coatingNote 1 to entry: See boiling (3.26) and carbon boil (3.34).Note 2 to entry: This can be the result of reaction with the substrate or
39、 with contamination on the substrate surface.3.22blanksized piece of untreated metal sheet that will be used in forming the finished article3.23blastingprocess whereby solid metallic, mineral, synthetic resin, vegetable particles or water are projected at high velocity against a work piece for the p
40、urpose of cleaning (3.44), abrading or shot peening the surface3.24blisterdefect that appears as a localized bubble under the surface of the fired vitreous enamel (3.255)3.25bloomvisual exudation or efflorescence on the vitreous enamel surfaceNote 1 to entry: See scumming (3.212).3.26boilingdefect r
41、esembling areas of ground-coat (3.135) pull-through, blisters (3.24) and pinholes (3.169), visible after first cover-coat fireNote 1 to entry: See carbon boil (3.34) and black specks (3.21).Note 2 to entry: This can be the result of excessive ground-coat activity during cover-coat fire, as the groun
42、d-coat boils up through the cover-coat it may be accompanied by a release of gases.3.27bolt-hole brushspecially-designed round brush used to remove vitreous enamel bisque from in and around small openings in the ware ISO 2017 All rights reserved 3BS EN ISO 19496-1:2017ISO 19496-1:2017(E)3.28box furn
43、acefurnace in which ware is fired according to a predetermined periodic cycle3.29break outdefect characterized by areas of blisters (3.24) having well-defined boundaries3.30bubble structuresize and spatial distribution of voids within the fired vitreous enamel layer3.31burn-offdefect that appears as
44、 a localized area of rough oxides erupting through the enamel coatingNote 1 to entry: This can be caused by too thin an application of enamel, allowing excessive oxidation of the metal substrate during firing, leading to super saturation of the enamel coating with metal oxides.3.32burning barburning
45、 pointburning tooltool used to suspend or support ware during firing operations3.33button testfusion button testcontrol test to determine the relative fusibility of vitreous enamel frit or powderNote 1 to entry: See fusion flow test (3.126).Note 2 to entry: The completed test specimen resembles a bu
46、tton.3.34carbon boildefect resembling areas of blisters (3.24), pinholes (3.169), or black specks (3.21), visible in fired vitreous enamel (3.255)Note 1 to entry: See boiling (3.26) and black specks (3.21).Note 2 to entry: Result of the oxidation of carbides and free carbon at or near the surface of
47、 the steel substrate during firing, resulting in evolution of gasses.3.35cascadingdefect that starts with a few particles of powder detaching themselves after application and as they cascade down the ware they gather more and more powder leaving a trail of thinner and thinner coatingNote 1 to entry:
48、 Excess powder, inadequate powder adhesion and vibration contribute to this defect.3.36cast iron enamelvitreous enamel (3.255) specifically formulated for application on cast iron substrate3.37cermetceramic-metal coatingmixture of one or more ceramic materials in combination with a metallic phase ap
49、plied to a metallic substrate4 ISO 2017 All rights reservedBS EN ISO 19496-1:2017ISO 19496-1:2017(E)3.38chalkboard enamelblackboard enamelspecial type of matt vitreous enamel used to provide a writing surface for chalk3.39chalky surfacesurface defect where the vitreous enamel surface has lost its gloss (3.131) and taken on a powdery appearanceNote 1 to entry: See scumming (3.212).3.40chemical resistancedegree of resistance of vitreous enamel (3.255) to attack by corrosive chemicals3.41chippingdefect characterized by fracturing and detachment of i
