1、August 1997 DEUTSCHE NORM I I Fluxes for brazing English version of DIN EN 1045 Classification and technical delivery conditions DIN EN 1045 ICs 25.1 60.50 Descriptors: Brazing, fluxes. Hartlten - Flumittel zum Hartlten - Einteilung und technische Lieferbedingungen Supersedes DIN 851 1-1, July 1985
2、edition. European Standard EN 1045 : 1997 has the status of a DIN Standard. National foreword This standard has been prepared by CEN/TC 121. The German body involved in its preparation was the Normenausschu Schweitechnik (Welding Standards Committee), Technical Committee Lten. It should be noted tha
3、t a) types FH 12 and FH 20 fluxes have been specified in this standard over and above those specified in DIN 851 1-1; b) the brazed joint need not be protected against moisture or water in some cases (e.g. where type FL 20 flux is used for brazing heat exchangers). Amendments DIN 8511-1, July 1985 e
4、dition, has been superseded by the specifications of EN 1045. Previous editions DIN8511: 1963-01; DIN 8511-1: 1967-08, 1985-07; DIN8511-3: 1967-08. EN comprises 6 pages. Q No pari of this standard may be reproduced without the prior permission of DIN Deutsches Institut fr Normung e.V., Berlin. Beuth
5、 Verlag GmbH, Berlin, has the exclusive right of sale for German Standards (DIN-Normen). Ref, No. DIN EN 1045: 1997-08 Sales No. 1105 02.98 English price group 05 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1045 June 1997 ICs 25.160.50 Descriptors: Brazing, fluxes. English version Brazing F
6、luxes for brazing Classification and technical delivery conditions Brasage fort - Flux pour le brasage fort - Classification et conditions techniques de livraison bedingungen Hartlten - Flumittel zum Hartlten - Einteilung und technische Liefer- This European Standard was approved by CEN on 1997-05-0
7、1. CEN members are bound to comply with the CENKENELEC 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 bibliographical references concerning such national standards may be obtained on
8、 application to the Central Secretariat or to any CEN member. The European Standards exist 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
9、has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom.
10、CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-IO50 Brussels O 1997. CEN - All rights of exploitation in any form and by any means reserved worldwide for CEN national members. Ref. No. EN 1045:1997 E
11、 Page 2 EN 1045:1997 Contents Foreword 1 2 2.1 2.2 2.3 3 4 4.1 4.2 5 Scope Classification General Fluxes for brazing heavy metals (Class FH) Fluxes for brazing light metals (Class FL) Designation Technical delivery conditions Forms of delivery Packaging and marking Health and safety precautions Fore
12、word Page 2 3 5 6 6 6 6 This European Standard has been prepared by Technical Committee CEN/TC 121 “Welding“, the secretariat of which is held by DS. 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 b
13、y December 1997, and conflicting national standards shall be withdrawn at the latest by December 1997. According to the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, De
14、nmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Page 3 EN 1045:1997 1 Scope This standard specifies the classification of fluxes used for brazing metals and characterizes these fluxes on t
15、he basis of their properties and use, and gives technical delivery conditions and health and safety precautions. 2 Classification 2.1 General This standard covers two classes of AX, FH and FL. Class FI is used for the brazing of heavy metals (steels, stainless steels, copper and its alloys, nickel a
16、nd its alloys, precious metals, molybdenum and tungsten). Class FL is used for the brazing of aluminium and its alloys. 2.2 Fluxes for brazing heavy metals (Class FH) 2.2.1 General Class FH covers seven types of flux. The code for each type consists of the class letters FH followed by two digits. 2.
17、2.2 Type FH10 Fluxes with an effective temperature range from 550 OC up to about 800 OC. They contain boron compounds, simple and complex fluorides and are used at brazing temperatures above 600 OC. These are general purpose fluxes. The residues are usually corrosive and have to be removed by washin
18、g or pickling. 2.2.3 Type FH11 Fluxes with an effective temperature range from 550 OC up to about 800 OC. They contain boron compounds, simple and complex fluorides and chlorides and are used at brazing temperatures above 600 OC. These fluxes are mainly used for brazing copper-aluminium alloys. The
19、residues are usually corrosive and have to be removed by washing or pickling. Page 4 EN 1045:1997 2.2.4 Type FH12 Fluxes with an effective temperature range from 550 “C up to about 850 OC. They contain boron compounds, elemental boron and simple and complex fluorides and are used at brazing temperat
20、ures above 600 OC. These fluxes are mainly used for brazing stainless and other alloy steels and hard metals. The residues are usually corrosive and have to be removed by washing or pickling. 2.2.5 Type FH20 Fluxes with an effective temperature range from 700 “C up to about 1000 OC. They contain bor
21、on compounds and fluorides and are used at brazing temperatures above 750 “C. These are general purpose fluxes. The residues are usually corrosive and have to be removed by washing or pickling. 2.2.6 Type FH21 Fluxes with an effective temperature range from 750 “C up to about 1100 “C. They contain b
22、oron compounds and are used at brazing temperatures above 800 “C. These are general purpose fluxes. The residues are usually non-corrosive but can be removed mechanically or by pickling. 2.2.7 Type FH30 Fluxes with effective temperatures from 1000 “C upwards. They generally contain boron compounds,
23、phosphates and silicates and are intended mainly for use with copper and nickel brazing filler metals. The residues are usually non-corrosive but can be removed mechanically or by pickling. 2.2.8 Type FH40 Fluxes with an effective temperature range from 600 “C up to about 1000 “C. They generally con
24、tain chlorides and fluorides but are boron-free and are intended for applications where the presence of boron is not permitted. The residues are usually corrosive and have to be removed by washing or pickling. Page 5 EN 1045:1997 2.3 2.3.1 General Fluxes for brazing light metais (Class FI,) Class FL
25、 covers two types of flux. The code for each type consists of the class letters FL followed by two digits. These fluxes have effective temperatures from 550 “C upwards. 2.3.2 Type FLlO These fluxes contain hygroscopic chlorides and fluorides, primarily lithium compounds. The residues are corrosive a
26、nd have to be removed by washing or pickling. 2.3.3 Type FL20 These fluxes contain non-hygroscopic fluorides. The residues are generally non-corrosive and can be left on the work piece, but the joint has to be protected against water or humidity. 3 Designation Fluxes supplied in accordance with this
27、 standard shall always be designated by the number of this standard and the flux code detailed in clause 2. NOTE: However, for each flux code there are fluxes available commercially which behave significantly differently, e. g. in fluidity, resistance to overheating and outgassing. Therefore, in cer
28、tain cases, it may be necessary to specify a flux by the trade name as well as the code detailed in clause 2. EXAMPLE: Designation of a flux of class FH, type FH 20 in accordance with EN 1045: Flux EN1045 - FH20 Page 6 EN 1045:1997 4 Technical delivery conditions 4.1 Forms of delivery Powder, paste
29、or liquid, brazing alloy-flux mixtures (in the form of paste or powder). 4.2 Packaging and marking Fluxes and filler metal-flux mixtures supplied in accordance with this standard shall be packed in suitable containers resistant to the flux they contain and shall be labelled with: a) the suppliers na
30、me and address; b) the trade name; c) the designation in accordance with clause 3; d) the batch number; e) any hazard warning required by national or EU regulations. 5 Health and safety precautions When working with fluxes, the following points shall be noted: Contact with the skin, particularly if broken, shall be avoided. The workshop, or place where the work is carried out, should be adequately ventilated. Attention is drawn to the need to comply with any appropriate national legislation covering the transportation, storage, use and disposai of fluxes.
