SANS 51395-7-2009 Thermal spraying - Acceptance inspection of thermal spraying equipment Part 7 Powder feed systems《热喷涂法-热喷涂设备的验收检测 第7部分 粉末加料系统》.pdf

1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA

2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any

3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-22407-3 SANS 51395-7:2009 Edition 1 EN 1395-7:2007 Edition 1SOUTH AFRICAN NATIONAL STANDARD Thermal spraying Acceptance inspection of ther

4、mal spraying equipment Part 7: Powder feed systems This national standard is the identical implementation of EN 1395-7:2007 and is adopted with the permission of CEN, rue de Strassart 36, B-1050 Brussels. WARNING Can only be used in conjunction with SANS 51395-1. Published by SABS Standards Division

5、 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001 Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS This standard may only be used and printed by approved subscription and freemailing clients of the SABS.SANS 51395-7:2009 Edition 1 EN 1395-7:2007 Edition 1 Table of changes Cha

6、nge No. Date Scope National foreword This South African standard was approved by National Committee SABS TC 107, Metallic and other inorganic coatings, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SANS document was published

7、in April 2009. This standard may only be used and printed by approved subscription and freemailing clients of the SABS.EUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN13957 January2007 ICS25.220.20 SupersedesEN1395:1996 EnglishVersion ThermalsprayingAcceptanceinspectionofthermalspraying equipmentPa

8、rt7:Powderfeedsystems ProjectionthermiqueContrledacceptationdumatriel deprojectionthermiquePartie7:Systmesdalimentation enpoudre ThermischesSpritzenAbnahmeprfungenfrAnlagen zumthermischenSpritzenTeil7:Pulverfrdersysteme ThisEuropeanStandardwasapprovedbyCENon23December2006. CENmembersareboundtocomply

9、withtheCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropean Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcerningsuchnational standardsmaybeobtainedonapplicationtotheCENManagementCentreortoanyCENmember. ThisEuropeanStan

10、dardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytranslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCENManagementCentrehasthesamestatusasthe officialversions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Bulgaria,Cyprus

11、,CzechRepublic,Denmark,Estonia,Finland, France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Romania,Slovakia,Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPI

12、SCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2007CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN13957:2007:EThis standard may only be used and printed by approved subscription and freemailing clients of the SABS.EN 1395-7:20

13、07 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Conditions of acceptance inspection4 5 Procedure of acceptance inspection.5 6 Designation 5 7 Inspection report5 Annex A (informative) Inspection report for a powder feed unit (initial test/retest).6 A.1

14、 Function test 6 A.2 Set value on the spraying equipment when testing the powder feed unit: .6 A.3 Mass flow inspection test .6 A.4 Powder de-mixing test Particle size distribution.7 A.5 Measuring equipment capability7 Bibliography 8 This standard may only be used and printed by approved subscriptio

15、n and freemailing clients of the SABS.EN 1395-7:2007 (E) 3 Foreword This document (EN 1395-7:2007) has been prepared by Technical Committee CEN/TC 240 “Thermal spraying and thermally sprayed coatings”, the secretariat of which is held by DIN. This European Standard shall be given the status of a nat

16、ional standard, either by publication of an identical text or by endorsement, at the latest by July 2007, and conflicting national standards shall be withdrawn at the latest by July 2007. This document together with EN 1395-1, 1395-2, 1395-3, 1395-4, 1395-5 and 1395-6 supersedes EN 1395:1996. EN 139

17、5 consists of the following Parts, under the general title Thermal spraying Acceptance inspection of thermal spraying equipment: Part 1: General requirements; Part 2: Flame spraying including HVOF; Part 3: Arc spraying; Part 4: Plasma spraying; Part 5: Plasma spraying in chambers; Part 6: Manipulato

18、r systems; Part 7: Powder feed systems. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Gr

19、eece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. This standard may only be used and printed by approved subscription and freemailing clients of the SABS. Th

20、is standard may only be used and printed by approved subscription and freemailing clients of the SABS.EN 1395-7:2007 (E) 4 1 Scope This European Standard specifies requirements for the acceptance inspection of thermal spraying equipment in the case of powder feed units used in spray jobs to produce

21、thermally sprayed coatings of reproducible quality. This part should be used in conjunction with EN 1395-1, which includes general requirements and explanations of procedures. This part should be used in addition to EN 1395-2 when carrying out acceptance inspection for flame and/or HVOF (high veloci

22、ty oxygen-fuel) spraying equipment, or EN 1395-4 when carrying out acceptance inspection for plasma spraying equipment. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated

23、references, the latest edition of the referenced document (including any amendments) applies. EN 657:2005, Thermal spraying Terminology, classification EN 1274:2004, Thermal spraying Powders Composition, technical supply conditions 3 Terms and definitions For the purposes of this document, the terms

24、 and definitions given in EN 657:2005 apply. 4 Conditions of acceptance inspection 4.1 General Clause 4 and clause 5 specify state of the art technology in thermal spraying equipment and the minimum requirements concerning stable parameter settings and maintenance according to the classes given in A

25、nnex A. 4.2 Powder feed unit 4.2.1 General The powder feed unit shall be suitable for operation with the spraying equipment to be tested. This means the carrier gas pressure and flow shall operate under the specific condition of the spraying process, e.g. in the low pressure atmosphere in the chambe

26、r or against the high pressure in the combustion chamber of the burner. The class of the powder feed unit has to correlate with the class of the spraying equipment itself. The unit shall permit uniform processing of the spraying powder for which it is designed. It shall be possible to adjust the pow

27、der feed rate. The set values shall be constant and reproducible, a precondition for this being adequate flow and constant carrier gas pressure or actuating air pressure, as appropriate. 4.2.2 Stand-alone powder feed unit This type of powder feed unit uses a carrier gas. A change in the primary gas

28、flow of the spraying equipment, as indicated on the control panel, shall not affect the carrier gas flow. This standard may only be used and printed by approved subscription and freemailing clients of the SABS.EN 1395-7:2007 (E) 5 4.2.3 Integrated powder feed unit in flame spraying equipment This ty

29、pe of powder feed unit uses a part of the main gas stream, e.g. part of oxygen flow inside the burner of the flame spraying equipment for the powder supply. This method of powder supply will mainly be used for manual spraying applications but can also be applied for mechanised ones. 5 Procedure of a

30、cceptance inspection 5.1 General A powder feed unit shall be deemed to have been properly supplied for all suitable applications when using a spraying powder according to EN 1274, agreed between contracting parties, if it complies with the requirements in 5.2 to 5.4. 5.2 Testing of function The powd

31、er feed unit shall comply with the requirements of its specification and/or with the contract confirmation of the supplier. 5.3 Testing the mass flow In order to determine the mass of powder fed over a given period, the system shall be operated in the “cold run“ mode using the carrier gas flow speci

32、fied by the manufacturer of the device, but without the burner or arc operated for at least 1 min. During this process, which is to be repeated twice more, the variation in the mass of powder fed shall not exceed 5 % in Class A or 10 % in Class B. In order to check reproducibility, the same feed rat

33、e and deviation shall be achieved after shut-down of the equipment for at least 3 h and recharge using the same amount of the test powder. 5.4 Testing the de-mixing Testing the de-mixing the powder container shall be filled with approximately 1 000 g of the agreed upon spraying powder. After feeding

34、 through approximately 900 g with the equipment in the “cold run“ mode, in accordance with the manufacturers operating instructions, the remaining quantity of about 10 % shall be analysed for its particle size distribution (PSD) according to EN 1274:2004, 3.3. The maximum deviation caused by de-mixi

35、ng the powder shall be agreed between the contracting parties. 6 Designation Acceptance inspection of the powder feed system shall be designated as follows: Acceptance inspection according to EN 1395-7. 7 Inspection report An example for the inspection report is given in Annex A. This standard may o

36、nly be used and printed by approved subscription and freemailing clients of the SABS.EN 1395-7:2007 (E) 6 Annex A (informative) Inspection report for a powder feed unit (initial test/retest) The initial test/retest fulfils the requirements of the acceptance inspection according to EN 1395-7. User:.

37、Manufacturer Year of manufacture: . Type of powder feed unit: Type of spraying equipment: . Class of spraying equipment: Type of spraying gun, if applicable: . CE-documentation complete: yes / no A.1 Function test The function complies with the specification or contract confirmation, respectively: y

38、es / no A.2 Set value on the spraying equipment when testing the powder feed unit: Carrier gas: pressure bar; flow Nl/min 1)A.3 Mass flow inspection test Spraying powder used for testing: _ Particle size: _ according to EN 1274 Feed time: _ min Limit deviations in % Evaluation Powder feed unit Set v

39、alue 1 stTest 2 ndTest 3 rdTest Class A Class B Actual deviation in % Passed Failed Mass of powder fed in g/min 5 10 1)Referred to temperature 0 C and normal pressure (1 013,25 hPa). This standard may only be used and printed by approved subscription and freemailing clients of the SABS.EN 1395-7:200

40、7 (E) 7 A.4 Powder de-mixing test Particle size distribution Measuring the particle size distribution is carried out by: _ method Particle size range Initial mass Residual mass De-mixing Evaluation m g % g % Limit deviation in % Actual deviation in % passed failed A.5 Measuring equipment capability

41、Limits of error of measuring instruments: _ % of set value (max. 5 %) Class 2.5 2) : yes / no Comments: . The powder feed unit has been accepted as a: Class A equipment: yes / no Class B equipment: yes / no Date: Inspectors signature: Date: Customers/ signature: Date: Suppliers signature: 2)Maximum

42、permissible error expressed by percentage of measuring span.This standard may only be used and printed by approved subscription and freemailing clients of the SABS.EN 1395-7:2007 (E) 8 Bibliography 1 EN 1395-1, Thermal spraying Acceptance inspection of thermal spraying equipment Part 1: General requ

43、irements 2 EN 1395-2, Thermal spraying Acceptance inspection of thermal spraying equipment Part 2: Flame spraying including HVOF 3 EN 1395-4, Thermal spraying Acceptance inspection of thermal spraying equipment Part 4: Plasma spraying SABSThis standard may only be used and printed by approved subscr

44、iption and freemailing clients of the SABS. This page has been left blank intentionally This standard may only be used and printed by approved subscription and freemailing clients of the SABS. SABS Standards Division The objective of the SABS Standards Division is to develop, promote and maintain So

45、uth African National Standards. This objective is incorporated in the Standards Act, 2008 (Act No. 8 of 2008). Amendments and Revisions South African National Standards are updated by amendment or revision. Users of South African National Standards should ensure that they possess the latest amendmen

46、ts or editions. The SABS continuously strives to improve the quality of its products and services and would therefore be grateful if anyone finding an inaccuracy or ambiguity while using this standard would inform the secretary of the technical committee responsible, the identity of which can be fou

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