BS EN 1045-1997 Brazing - Fluxes for brazing - Classification and technical delivery conditions《钎焊 钎焊用熔剂 分类和交付技术状态》.pdf

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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 1045 : 1997 The Eur

2、opean Standard EN 1045 : 1997 has the status of a British Standard ICS 25.160.50 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Brazing Fluxes for brazing Classification and technical delivery conditionsThis British Standard, having been prepared under the direction of the Se

3、ctor Board for Engineering, was published under the authority of the Standards Board and comes into effect on 15 September 1997 BSI 1997 ISBN 0 580 28353 4 BS EN 1045 : 1997 Amendments issued since publication Amd. No. Date Text affected National foreword This British Standard is the English languag

4、e version of EN 1045 : 1997. The UK participation in its preparation was entrusted to Technical Committee WEE/19, Brazing and braze welding, which has the responsibility to: aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or pr

5、oposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement int

6、ernational or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled International Standards Correspondence Index, or by using the Find facility of the BSI Standards Electronic Catalogue. Compliance with a British Standard does not o

7、f itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 4, an inside back cover and a back cover.CEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu

8、 r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1997 All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1045 : 1997 E EUROPEAN STANDARD EN 1045 NORME EUROPE ENNE EUROPA ISCHE NORM June 1997 ICS 25.160.50 Descriptors: W

9、elding, brazing-and soldering, brazing, soldering fluxes, classifications, designations, delivery English version Brazing Fluxes for brazing Classification and technical delivery conditions Brasage fort Flux pour le brasage fort Classification et conditions techniques de livraison Hartlo ten Flumitt

10、el zum Hartlo ten Einteilung und technische Lieferbedingungen This European Standard was approved by CEN on 1997-07-01. 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

11、 any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made

12、 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 official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland,

13、Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.Page 2 EN 1045 : 1997 BSI 1997 Foreword 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 b

14、e given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 1997, and conflicting national standards shall be withdrawn at the latest by December 1997. According to the CEN/CENELEC Internal Regulations, the national standards org

15、anizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword 2 1

16、Scope 3 2 Classification 3 2.1 General 3 2.2 Fluxes for brazing heavy metals (Class FH) 3 2.3 Fluxes for brazing light metals (Class FL) 3 3 Designation 3 4 Technical delivery conditions 4 4.1 Forms of delivery 4 4.2 Packaging and marking 4 5 Health and safety precautions 4Page 3 EN 1045 : 1997 BSI

17、1997 1 Scope This standard specifies the classification of fluxes used for brazing metals and characterizes these fluxes on the 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

18、of flux, FH and FL. Class FH is used for the brazing of heavy metals (steels, stainless steels, copper and its alloys, nickel and 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

19、General Class FH covers seven types of flux. The code for each type consists of the class letters FH followed by two digits. 2.2.2 Type FH10 Fluxes with an effective temperature range from 550 C up to about 800 C. They contain boron compounds, simple and complex fluorides and are used at brazing tem

20、peratures above 600 C. These are general purpose fluxes. The residues are usually corrosive and have to be removed by washing or pickling. 2.2.3 Type FH11 Fluxes with an effective temperature range from 500 C up to about 800 C. They contain boron compounds, simple and complex fluorides and chlorides

21、 and are used at brazing temperatures above 600 C. These fluxes are mainly used for brazing copperaluminium alloys. The residues are usually corrosive and have to be removed by washing or pickling. 2.2.4 Type FH12 Fluxes with an effective temperature range from 550 C up to about 850 C. They contain

22、boron compounds, elemental boron and simple and complex fluorides and are used at brazing temperatures above 600 C. 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

23、FH20 Fluxes with an effective temperature range from 700 C up to about 1000 C. They contain boron 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 F

24、H21 Fluxes with an effective temperature range from 750 C up to about 1100 C. They contain boron 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

25、 with effective temperatures from 1000 C upwards. They generally contain boron compounds, 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 Flux

26、es with an effective temperature range from 600 C up to about 1000 C. They generally contain 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. 2.

27、3 Fluxes for brazing light metals (Class FL) 2.3.1 General Class FL 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 FL10 These fluxes contain hygroscopic chlorides and fl

28、uorides, primarily lithium compounds. The residues are corrosive and 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

29、or humidity. 3 Designation Fluxes supplied in accordance with this 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 flui

30、dity, resistance to overheating and outgassing. Therefore, in certain cases, it may be necessary to specify a flux by the trade name as well as the code details in clause 2. Example: Designation of a flux of class FH, type FH 20 in accordance with EN 1045: Flux EN 1045 FH 20.Page 4 EN 1045 : 1997 BS

31、I 1997 4 Technical delivery conditions 4.1 Forms of delivery Powder, paste 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 resista

32、nt to the flux they contain and shall be labelled with: a) the suppliers name 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, t

33、he 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,

34、storage, use and disposal of fluxes.blankBSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |

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