1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58equipment Part 5: Plasma spraying in chambersThe European Standard EN 1395-5:2007 has the status of
2、 a British StandardICS 25.220.20Thermal spraying Acceptance inspection of thermal spraying BRITISH STANDARDBS EN 1395-5:2007BS EN 1395-5:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 February 2007 BSI 2007ISBN 978 0 580 50280 4Amendm
3、ents issued since publicationAmd. No. Date Commentssecretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.National forewordTh
4、is British Standard was published by BSI. It is the UK implementation of EN 1395-5:2007. This standard together with BS EN 1395-1, BS EN 1395-2, BS EN 1395-3, BS EN 1395-4, BS EN 1395-6 and BS EN 1395-7 supersedes BS EN 1395:1996.The UK participation in its preparation was entrusted to Technical Com
5、mittee STI/40, Thermally sprayed inorganic finishes.A list of organizations represented on STI/40 can be obtained on request to its EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 1395-5January 2007ICS 25.220.20 Supersedes EN 1395:1996 English VersionThermal spraying - Acceptance inspection of the
6、rmal sprayingequipment - Part 5: Plasma spraying in chambersProjection thermique - Contrle dacceptation du matrielde projection thermique - Partie 5: Projection plasma sousenceinteThermisches Spritzen - Abnahmeprfungen fr Anlagenzum thermischen Spritzen - Teil 5: Plasmaspritzen inKammernThis Europea
7、n Standard was approved by CEN on 23 December 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references conce
8、rning such nationalstandards may be obtained on application to the CEN 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 translationunder the responsibility of a CEN member into its own l
9、anguage and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, L
10、uxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rig
11、hts of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1395-5:2007: EEN 1395-5:2007 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Principles of acceptance inspection5 5 Procedure for acceptance inspectio
12、n of vacuum components5 6 Designation 7 7 Inspection report7 Annex A (informative) Inspection report for chamber and pump systems for plasma spraying in controlled atmosphere (initial test/retest).8 Bibliography 10 EN 1395-5:2007 (E) 3 Foreword This document (EN 1395-5:2007) has been prepared by Tec
13、hnical 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 national standard, either by publication of an identical text or by endorsement, at the latest by July 2007, and conflicting n
14、ational standards shall be withdrawn at the latest by July 2007. This document together with EN 1395-1, 1395-2, 1395-3, 1395-4, 1395-6 and 1395-7 supersedes EN 1395:1996. EN 1395 consists of the following Parts, under the general title Thermal spraying Acceptance inspection of thermal spraying equip
15、ment: 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: Manipulator systems; Part 7: Powder feed systems. According to the CEN/CENELEC Internal Regulations, the national standards organizat
16、ions of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romani
17、a, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 1395-5:2007 (E) 4 1 Scope This European Standard specifies requirements for the acceptance inspection of thermal spraying equipment, in this case the pressurised part only for low pressure and controlled atmosphere plasma spray
18、ing, used in spray jobs to produce 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. The plasma spraying system itself should be acceptance inspected according to EN 1395-4.
19、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 references, the latest edition of the referenced document (including any amendments) applies. EN 657:2005, Thermal spray
20、ing Terminology, classification 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 657:2005 and the following apply. 3.1 final pressure asymptotically approached value that the pressure reaches in a closed flanged vacuum pump system at usual operating co
21、nditions and without further gas inlet 3.2 degassing gaseous de-sorption which can be accelerated by physical processes, e.g. by evacuation, heating 3.3 vapour de-sorption spontaneous evaporation as the decreasing pressure depresses the boiling point to the ambient temperature 3.4 gas ballast of a v
22、acuum pump controlled admission of an amount of gas, in general into the compression room of a vacuum pump to avoid or minimise the condensate formation within the vacuum unit 3.5 gas load total p V/t flow that is applied to the vacuum system NOTE The unit is mbar l s1. 3.6 leaks leakiness within th
23、e system caused by material or processing faults or wrong handling of sealings NOTE A leak can occur in the camber or at joint elements. EN 1395-5:2007 (E) 5 3.7 leakage rate LR p V/t flow for gas by a leak NOTE LR depends on the pressure difference and the temperature. The unit is 1 Pa m3s1= 1 10 m
24、bar l s1. 3.8 suction power p V/t flow of the gas pumped out of the system NOTE The unit is 1 Pa m3s 1= 1 10 mbar l s1. 3.9 controlled atmosphere atmosphere inside the chamber used for thermal spraying where the pressure is kept constantly or in small tolerances 4 Principles of acceptance inspection
25、 4.1 General 5.1 to 5.4 reveal state of the art technology in thermal spraying equipment and the minimum requirements concerning a stable parameter setting and maintenance given in Annex A. 4.2 Typical components A low pressure plasma spraying system contains the following components: vacuum pumping
26、 unit; vacuum chamber; manipulator systems; plasma spraying equipment. 5 Procedure for acceptance inspection of vacuum components 5.1 General All values mentioned in the following clause are valid for a new and clean system only. For the acceptance test period the filter elements shall be taken out.
27、 The acceptance inspection of the low pressure system is divided into the acceptance test of the vacuum pumping unit and of the vacuum chamber. 5.2 Low pressure performance of the pump station For the acceptance test of the vacuum pumps the pump system is to be separated from the chamber mechanicall
28、y or locked by means of a vacuum slide valve. The evacuation time from atmospheric pressure to 1 mbar is regarded as an acceptance criteria. This time period for the separated pumping unit shall not exceed 5 min. Subsequently the final vacuum of the pumping EN 1395-5:2007 (E) 6 system is checked. Wi
29、th this, a value lower than 5 103mbar (0,005 mbar) shall be reached, depending on the set-up, within a period of 30 min if nothing else is specified among the contracting parties. 5.3 Low pressure performance of the chamber 5.3.1 Preparation The chamber volume has to be determined according to inter
30、nal geometrical dimensions. The complete system is consequently tested without the internal set-up inside the chamber (e.g. manipulator). In order to carry out the vacuum tests it is necessary to maintain the chamber in a condition that is free of dust and any contamination. Therefore, the system sh
31、ould be evacuated for a longer time period to minimise pollutions (e.g. removal of de-sorptions of steam and air molecules adsorpted on the chamber walls). Ventilation is recommended to flood the chamber with argon gas while pumping. Applying the evacuation tests the chamber should be opened for a t
32、ime period of max. 5 min to simulate charging of parts to be sprayed. Then, the chamber door sealing is to be cleaned and the system is to be evacuated. The time period for evacuating from atmospheric pressure onto 1 mbar should not exceed 15 min. This value is only valid to a chamber in the new con
33、dition. Any pollutants by spray material deposits can influence this value significantly. Subsequently the leakage rate of the complete system has to be determined. Identical preparations are to be applied as for the acceptance test of the pumping unit. 5.3.2 Leakage rate The chamber pressure should
34、 amount to at least 5 102mbar (0,05 mbar) after 30 min evacuation time. For determination of the leakage rate, the vacuum pump system has to be switched off and the pressure rise in the chamber, as well as in the pump system shall be measured. 5.3.3 Determination of the leakage rate (LR) For the det
35、ermination of the leakage rate for a comparable value without the influence of the rest of the gas pollutions and de-sorption, it is recommended to start the leakage rate determination not before 30 min after switch off the vacuum pumps. The time range of 1 h for the determination of the leakage rat
36、e is sufficient. The pressure drop should be observed and recorded by suitable means e.g. pressure gauge and stop watch (use of X/Y printer, PC control unit are recommended). LR = (p90p30) Cvol /T (1) where p30is the pressure after 30 min pump stopping; p90is the pressure after 90 min pump stopping;
37、 Cvolis the volume of chamber; T is the time range 60 min = 3 600 s. Subsequently, the complete system is tested, inclusive of all internal settings (e.g. manipulator, robot, gun), with regard to the evacuation times. The leakage rate for the complete system including the internal settings and with
38、the chamber locked from the pumping unit shall not exceed 6 103mbar l s 1(0,006 mbar l s1). EN 1395-5:2007 (E) 7 5.4 Function test For the function test of the complete system with the internal set-up inside the chamber (e.g. manipulator) it has to be evacuated to a pressure of 5 102mbar (0,05 mbar)
39、. This evacuation time shall not exceed 30 min. Subsequently, the plasma system is started with argon gas after ventilation with argon to a suitable plasma start pressure greater than 5 mbar. To check the requirements concerning controlled atmosphere conditions the constant pressure regulation under
40、 spraying conditions are to be determined for 50 mbar, 100 mbar, 150 mbar, 200 mbar and 250 mbar chamber pressure experimentally. The maximum deviation of the adjusted chamber pressure can be tolerated as follows: 10 mbar to 200 mbar: 5 mbar; 200 mbar to 500 mbar: 10 mbar. Applying acceptance inspec
41、tion of the automatic chamber pressure control the plasma gas flow through the gun is to vary specifically. 6 Designation Acceptance inspection of the thermal spraying equipment for plasma spraying in cambers shall be designated as follows: Acceptance inspection according to EN 1395-5. 7 Inspection
42、report An example for the inspection report is given in Annex A. EN 1395-5:2007 (E) 8 Annex A (informative) Inspection report for chamber and pump systems for plasma spraying in controlled atmosphere (initial test/retest) The initial test/retest fulfils the requirements of the acceptance inspection
43、according to EN 1395-5. User:. Manufacturer:. Year of manufacture: . Type of equipment: Type of spray gun: . Type of pump system: CE-documentation complete: yes / no Pressure Evaluation Item tested, where applicable value in mbar time in min measured time in min actual deviation in % passed failed L
44、ow pressure performance 1 5 pump station 0,005 30 chamber 0,05 30 Leakage rate (LR) 0,05 0 30 chamber pressure 90 pressure difference p90 p30 leakage rate (LR = (p90 p30) Cvol 3 60010,006 mbar l s1Pressure Evaluation Item tested, where applicable set point in mbar tolerance in mbar measured actual p
45、ressure in mbar actual deviation in % passed failed Functional test 50 5 100 5 150 5 200 5 250 10 chamber pressure 300 10 EN 1395-5:2007 (E) 9 Time needed for stabilisation: . Automatic energy shutdown: Lack of cooling water: yes / no Limits of error of measuring instruments: % of set point (max. 5
46、%) Class 2,5 1): yes / no Comments: . The chamber and pump system has been accepted: yes / no Date: Inspectors signature: Date: Customers signature: . Date: Suppliers signature: 1)Maximum permissible error expressed by percentage of measuring span. EN 1395-5:2007 (E) 10 Bibliography 1 EN 1395-1, The
47、rmal spraying Acceptance inspection of thermal spraying equipment Part 1: General requirements 2 EN 1395-4, Thermal spraying Acceptance inspection of thermal spraying equipment Part 4: Plasma spraying blankBS EN BSI389 Chiswick High RoadLondonW4 4AL1395-5:2007BSI British Standards InstitutionBSI is
48、the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter.RevisionsBritish Standards are updated by amendment or revision. Users of British Standards should make sure t
49、hat they possess the latest amendments or editions.It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel: +44 (0)20 8996 9000. Fax: +44 (0
