1、- STD.BS1 BS EN IS0 L49LB-ENGL 2998 II LbZLtbbS 073Ll23 528 BRITISH STANDARD BS EN IS0 14918:1998 Thermal spraying - Approval testing of thermal sprayers The European Standard EN IS0 149181998 has the status of a British Standard ICs 25.220.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY
2、 COPYRIGHT LAW BS EN IS0 14918:1998 direction of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 16 November 1998 Amd. No. O BSI 1998 National foreword Date Text affected This British Standard is the English lang
3、uage version of EN IS0 149181998. It is identical with IS0 149181998. The UK participation in its preparation was entrusted to Technical Committee SW40, Thermally sprayed inorganic fmishes, which has the responsibility to: - aid enquirers to understand the text; - present to the responsible inkrnati
4、onal/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed - monitor related intedonal and European developments and proinulgate them in the UK. A iist of organizations represented on this committee can be obtained on request to its secre
5、tary. Cross-references Attention is dram to the fact that CEN and CENELEC Standards normally include an annex which lists nonnative references to international publications with their corresponding European publications. The British Standarch which implement internationai or European publications re
6、ferred to in this document may be found in the BSI Standards Catalogue under the section entitied “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of
7、a contract Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside nont cover, the EN IS0 title page, pages 2 to 23 and a
8、back cover. ISBN O 680 30443 4 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IS0 1491 8 October 1998 ICs 25.220.20 Descriptors: thermal spraying, qualification, personnel, generalities, certification, verification, tests, acceptability, designation English version Thermal spraying - Approval
9、testing of thermal sprayers (IS0 1491 8: 1 998) Projection thermique - Qualification des agents en projection thermique (IS0 14918:1998) Thermisches Spritzen - Prfung von thermischen Spritzern (IS0 14918:1998) This European Standard was approved by CEN on 2 August 1998. CEN members are bound to comp
10、ly with the CEWCENELEC Intemal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secre
11、tariat 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 responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the offic
12、ial - 111 - versions. _I II e - CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. * m * EUROPEAN COMMITTEE FO
13、R STANDARDIZATION COMITE EUROPEEN DE NORMALISATION EUROPISCHES KOMITEE FUR NORMUNG Central Secretariat: rue de Stassart, 36 8-1050 Brussels Q 1998 CEN All rights of exploitation in any form and by any means resewed worldwide for CEN national Members. Ref. No. EN IC0 14918:1998 E STD-BSI BS EN IS0 LL
14、iSL8-ENGL L778 LbZLibbS 073842b 237 Page 2 EN IS0 14918:1998 Contents Page Foreword . 3 introduction 4 1 scope 4 2 Normative references 4 3 Definitions 5 3.1 Thermal sprayer 5 5 3.4 Test piece . 5 3.6 Test . 5 . 3.2 Examiner or examining body 3.3 Specific acceptance criteria . 5 3.5 Testspecimen 5 4
15、 4.1 4.2 4.3 Essential requirements for approval testing . 5 General . 5 Equipmentoperation 5 Masking procedure . 5 4.4 Surface preparation 4.5 Environmental conditions 0 4.6 Application equipment . 6 5 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 Rangeofapproval 6 General . 6 Qualificationscope . 7 Test methods
16、 . 7 7 Thermal spraying processes 6 Supervision 7 Shapes and dimensions of test pieces . 7 Acceptance requirements for test pieces . 7 Spray materials for tests . 6 Examinationandtesting 7 6.1 Job knowledgetest 7 6.2 Practical test . 7 7 Retests 8 7.1 General . 8 7.2 Additionaltests . 8 8 Periodofva
17、lidity 0 8 8.3 Requirements 8 8.4 Scheduling . 8 9 Certification . 8 9.1 Finalapproval 8 9.2 Records . 8 10 Designation . 9 8.1 Initialapproval 8.2 Prolongation . 8.5 Thermal sprayers with expired or cancelled qualification status . 8 Annex A (normative) Job knowledge . 10 Annex B (normative) Specif
18、ic acceptance criteria 12 Annex C (informative) Thermal Sprayer Approval Test Certificate . 21 Annex ZA (normative) Normative references to international publications with their relevant European publications . . . 23 STD-BSI BS EN IS0 14918-ENGL 1778 I Lb24bb 0738427 173 Page 3 EN IS0 14918:1998 Fo
19、reword The text of EN IS0 14918:1998 has been prepared by Technical Committee CEN/TC 240 “Thermal spraying and thermally sprayed coatings“, the secretariat of which is held by DIN, in collaboration with Technical Committee ISO/TC 107 “Metallic and other inorganic coatings“. This European Standard sh
20、all be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 1999, and conflicting national standards shall be withdrawn at the latest by April 1999. For relationship with EU Directive(s), see informative Annex ZA, which is an i
21、ntegral pari of this standard. According to the CENKENELEC Internai Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxemb
22、ourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. * * Kn STD*BSI BS EN IS0 LqSLB-ENGL 1778 W lb24bb7 0738428 OOT Page 4 EN IS0 14918:1998 Introduction This standard covers the principles of the approval testing of sprayer performance for thermal spraying. The qu
23、ality of work involved in thermal spraying depends on the skill and job knowledge of the thermal sprayer. The ability of the thermal sprayer to follow verbal and written instructions and testing of his skill are therefore important factors in ensuring the quality of the thermally sprayed product. Th
24、is standard is intended to provide the basis for the mutual recognition by examining bodies for approval relating to thermal sprayers competence in the various fields of application. Tests shall be carried out in accordance with this standard unless more severe tests are specified by the relevant ap
25、plication standards when these shall be applied. The thermal sprayets skill and job knowledge continue to be approved only if the thermal sprayer is working with reasonable continuity on thermal spraying work within the extent of approval. All new approvals are to be in accordance with this standard
26、 from the date of this issue. 1 Scope This standard gives procedural instructions for approval testing of thermal sprayers. It defines essential require- ments, ranges of approval, test conditions, acceptance requirements and certification for approval testing of thermal spray performance. During th
27、e approval test the thermal sprayer shall be required to show adequate practical experience and 1,- knowledge of thermal spraying processes, materials and safety requirements for which he is to be approved; information on these aspects is given in Annex A. This standard shall be used when the therma
28、l sprayers approval is required by the standard, the purchaser, by inspection authorities or by other organisations. The thermal spraying processes referred to in this standard include those spraying processes which are designated as manual or mechanized. Due to the variety and specialisation of aut
29、omatic systems for thermal spraying where the thermal sprayer has no direct influence on the spraying process, this standard is not applicable in those circumstances. The certificate of approval testing is issued under the sole responsibility of the examiner or test body. 2 Normative references This
30、 European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publica
31、tions apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 582 EN 657 EN 1274 EN 1395 EN 22063 Testing of thermally sprayed coatings - Determination of adhesive tensile strength The
32、rmal spraying - Terminology, classification Powders for thermal spraying - Composition - Technical supply conditions Acceptance inspection of thermal spraying equipment Metallic and other inorganic coatings - Thermal spraying - Zinc, aluminium and their alloys Metallic materials - Hardness test - Vi
33、ckers test - Pari 1 : HV 5 to HV 1 O0 Metallic materials - Hardness tests - Rockwell test (scales A - 6 - C - D - E - F - G - H - K) IS0 6507-1 IS0 6508 Page 5 EN IS0 14918:1998 term gun movement workpiece movement IS0 8501-1 Preparation of steel substrates before application of paints and related p
34、roducts - Visual assessment of surface cleanliness - Part 1: Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previous coatings workpiece loading/ unloadina 3 Definitions For the purpose of this standard the definitions in EN 657 and th
35、e following apply. 3.1 thermal sprayer: a person who performs thermal spraying with a manual or mechanized system. 3.1.1 manual thermal spraying: where the spraying gun or torch is manipulated by hand. 3.1.2 mechanized thermal spraying: where some aspects of the process are mechanized, with the gun/
36、torch not manipulated by hand. 3.1.3 automatic thermal spraying: all operations typical of the spraying process are fully mechanized including all handling, e.g. workpiece loading and unloading, and are integrated in a programmed system. The terms of manual, mechanized and automatic thermal spraying
37、 are summarized in table 1. 1 1 manual manual I manuaVmechanited I manuaVmechanized I I l l I mechanized mechanized mechanized manual I I I I I automatic mechanized mechanized mechanized I 3.2 examiner or examining body: a person or organisation who verifies compliance with the application standard.
38、 3.3 specific acceptance criteria: a document providing in detail the criteria by which a thermal sprayer can be tested to be approved for a particular spraying technique or application area. 3.4 test piece: in the sense of this standard, the themial spray workpiece used for the approval test. 3.5 t
39、est specimen: in the sense of this standard, a portion cut from the test piece in order to perform a specified analytical test. 3.6 test: in the sense of this standard, a series of operations which will include the making of a thermally sprayed test piece and subsequent non-destructive and/or destru
40、ctive testing and reporting of results. 4 4.1 General The criteria specified in this clause shall be examined in order to identify the ability of the thermal sprayer in these areas. The thermal sprayets approval test shall be carried out on test pieces and is independent of the type of construction.
41、 For all thermal spraying processes and operations there exists basic job knowledge and specific knowledge related to the process, on which the thermal sprayer shall be tested, see Annex A. Essential requirements for approval testing 4.2 Equipment operation The thermal sprayer shall be tested to det
42、ermine his knowledge of the equipment. Further details see A.4.3. 4.3 Masking procedure The thermal sprayer shall be tested to determine his knowledge of proper masking procedures for both surface preparation and spraying. STD-BSI BS EN IS0 LiSLB-ENGL 1798 1b2ibbS 073BLi30 7bB = Page 6 EN IC0 14918:
43、1998 4.4 Surface preparation The thermal sprayer shall approve the surface of the thermal spray test piece which are used for qualification. He should also maintain a properly prepared surface during the qualification testing. 4.5 Environmental conditions The thermal sprayer shall approve the enviro
44、nmental conditions such as temperature, humidity, dew point, as being suitable for spraying the test pieces. 4.6 Application equipment Test results, gained from test pieces sprayed with actual production equipment, or equipment similar to it in the view of the certifying examining body and represent
45、ative of said equipments quality, shall be utilised for thermal sprayer qualification. 5 Range of approval 5.1 General Thermal sprayers shall be qualified for thermal spraying to a specific coating process and method of application. The qualification shall only be valid for that specific coating pro
46、cess and method of application. The thermal spraying processes and methods of application covered by this standard are identified in 5.2. 5.2 Thermal spraying processes 5.2.1 This standard covers the following thermal spraying processes according to EN 657: Grouping of thermal spraying processes - f
47、lame spraying; - arc spraying; - plasma spraying; - high velocity flame spraying; - powder spraying; - wire spraying /rods/cords. 5.2.2 Application method - manual - mechanized 5.2.3 Materials The materials given in Annex B are the specific materials to be used in the approval test. The following ma
48、terials are given only for information to show which material is appropriate for each process. Appropriate materials for various processes: Flame spravina : Dowder. wire or rods : I Arc sDrav ing - Metals and alloys (for engineering purposes) - Zinc and aluminium and their alloys (for corrosion prot
49、ection) Flame sorav ina: DOWde r. w ire or rods: - Self-fluxing alloys Plasma srav ing - Metals and alloys - Ceramics - Metal based carbideskarbides STD-BSI BS EN IS0 34738-ENGL 3778 81 LL2iibb7 0738433 bT4 = Page 7 EN IS0 14918:1998 Hiah velociiy flame sp ravina: - Metals and alloys - Metal based carbides 5.3. Qualification scope The requirements for initial thermal sprayer qualification will be different for each of the classifications in 5.2 above. Qualification in one categoy (process and application method) would not imply any ability or experience in practising
