Filler rods for braze welding Determination of conventional bond strength on steel, cast iron and other metals Métaux d''''apport de soudobrasage Détermination de la résistance d''''accrochage conventionnel[.]
Fi l l er rods for braze wel d i n g - Determ i n ati on of ven ti on al bon d strength on steel , cast i ron and oth er metals Métaux d'apport de soudobrasage - Détermination de la résistance d'accrochage conventionnelle sur acier, fonte e t autres métaux Fi rst ed i ti o n I n tern ati o n al Org an i z ati o n fo r S tan d ard i z ati o n - 75 - - 698-7 I - 5390 FOREWORD I S (th e I n tern ati on al Organization fo r Stan dardi zati on ) i s a worl d wi d e federati on i n sti tu tes ( I S Member Bodies) The work of developing I n tern ati on al Standards i s carri ed o u t th rou gh I S Technical Committees Every of n ati on al standards Member Body interested i n a subject fo r wh i ch a Technical Com m i ttee has been s e t u p has th e ri g h t t o be represented on th at Committee I n tern ati on al organizations, governmental and non-governmental, i n l i son wi th ISO, also take part i n th e work D raft I n tern ati on al Standards adopted by th e Technical Committees are ci rcu l ated to the Member Bodies fo r approval before th ei r acceptance as I n tern ati on al Standards by th e I S Council Pri or t o 972, the results of th e work o f the Technical Committees were published as IS0 Recommendations; these tran sform ed Committee i n to I n tern ati on al i S O /rC 4 documents are Standards has reviewed IS0 tech n i cal l y suitable fo r tran sform ati on As n ow part of in th e th i s process o f process, being Technical Recommendation R 698 and fou n d i t I n tern ati on al Standard IS 698 th erefore replaces I S Recommendation R 698-1 968 t o wh i ch i t i s tech n i cal l y i den ti cal I S Recommendation R 698 was approved by th e Member Bodies o f th e fo l l o wi n g countries : The Australia I n di a Romania Au stri a I rel an d Spain Brazil Israel Sweden Canada I tal y Swi tzerl an d Chile Japan U n i ted Ki n gdom Denmark Netherlands U.S.S R Egypt, Arab Rep o f New Zealand Yugoslav i a France Portu ga I Member Bodies of th e fo l l o wi n g countries expressed disapproval of th e Recommendation on technical grounds : Belgium Germany South Africa, Rep of U.S.A The Member Body of th e fo l l owi n g cou n try disapproved th e tran sform ati on of ISO/R 698 i n t o an I n tern ati on al Standard : Germany O I n tern ati on al ü rg an l za tío n fo r Stan d ard i zati on , 975 Printed in Swi tzerl an d I n tern ati o n al Org an i z ati o n fo r S tan d ard i z ati o n O07 INTERNATIONAL STANDARD IS 4853903 678-75 698-1 975 (E) 0070253 - ~~ ~ ~ Filler rods for braze welding Determination of conventional bond strength on steel, cast iron and other metals - O INTRODUCTION This I n tern ati on al Filler rods for Standard braze a companion is - welding to IS0 688, Determination of 4.1.1.2 bevel, The plates shall be o f m i l d s t e e l The faces of the cleaned of oxi de and oth er degreased before assembly SCOPE AND FIELD OF APPLICATION 4.1.2 This 4.1 2.1 I n tern ati on al Standard specifies methods o f t e s t fo r as the immediately su rrou n di n g areas (over a wi d th o f t o m m ) , shall be characteristics of deposited metal fi l l er rods fo r braze welding, t o determine the ven ti on al as well which shall be smooth, surface tam i n ati on and Operatingconditions The thickness of the plates and the operating di ti ons s h a l l be as specified i n table , according t o the bon d strength on diameter o f the fi l l er rod? ) - ste el , - c a s t iron, - oth er metals and alloys TABLE Diameter of filler ?i ro d , rnrn REFERENCE IS0 82, Steel - Tensile testing Thickness, e, of plates, mrn Acetylene consumption 150 150 200 50 31 blowpipe, I/h* Number runs to The operator should ensure that the acetylene consumption his blowpipe corresponds as closely as possible to the value shown of GENERAL of The ven ti on al bon d strength of a braze welding fi l l er metal on a parent metal i s determined by means of a tensile test in which the stress is applied to the normal cross-sectional area o f the t e s t piece DETERMINATION STRENGTH ON STEEL OF CONVENTIONAL BOND The assembly welding shall upward, be the i n cl i n ed posi ti on (approxi m atel y of made by the plates being i n 30?) a l eftward sl i g h tl y As the straightening th e plates after welding i s forbidden, precautions shall be The bl owpi pe shall be fed wi th correctl y pu ri fi ed acetylene 98% The the manufacturer o f the fi l l e r rod The nature of the flame, Type o f assembly and choice o f parent metal whether In order to determine the bu tt j oi n t assembly wi th o u t a gap, conventional on bon d s t e e l , a single Vee as shown i n fi gu re , neutral o r oxi di zi n g, shall be stated i n the t e s t report 4.1.2.3 I f a cleaning fl u x i s necessary, the fl u x appropriate t o the fi l l er rod being tested shall be applied shall be braze welded 2) method, and wi t h oxygen having a m i n i m u m pu ri ty of strength o f braze welding fi l l e r metals ) 4.1.2.2 flame shall be neutral,Z) unless otherwise recommended by 4.1.1.1 of taken t o keep th e assembly as fl at as possible 4.1 Assembly 4.1 I * Care should be taken to ensure a level joint assembly A flame is said to be neutral when the ratio oxygen to acetylene is nearly equal to I I n tern ati o n al Org an i z ati o n fo r S tan d ard i z ati o n of IS 698-1 975 ( E ) 4.2 Tensile t e s t s 4.2,l Preparation of tensile test pieces 4,2.1.1 Operating conditions 5.1.2 5.1.2.1 The operati ng d i ti on s shall be as specified i n table Six t e s t pieces shall be taken as shown i n figure TAB LE 4.2.1.2 After removal of th e excess m etal by m ach i ni ng t wo faces, the rectangular tensile t e s t pieces shall from the be machined as shown in figure The edges shall be parallel and rou nded t o a radius n o t machined rectilinear, exceeding mm The I Tensile test requirements 4.2.2 tests shall be made a t Di am eter o f fi l l er rod, mm 3,1 Acetyl en e su m pti on of t o , accord i n g t o bl owpi pe, I / h * d i am eter o f fi l l er ro d I N u m b er o f runs I see Th e operator should ensure th at th e acetyl en e su m pti on o f am bi ent temperature, unless his b l o wp i pe corresponds as closely as possible to 5.1.2.2 by th e value sh own otherwise specified, and i n accordance wi th I S 82 4.3 Expression of results Wherever th e break occurs, the venti onal bond strength, expressed in newtons The assembly shall be made the l eftward method, the bars being h ori zon tal per square m i l l i m etre, shall be obtai ned by d i vi d i n g the total breaki n g load, expressed i n newtons, by the i n i ti al cross-sectional area of th e t e s t piece, expressed i n square m i l l i m etres The posi ti on o f the break shall be stated i n the t e s t report The bl owpi pe shall be fed wi t h correctl y pu ri fi ed acetylene and wi th oxygen h.aving a m i n i m u m pu ri ty o f 98 % The flame shall be neutral,' unless otherwise recommended by th e m anu factu rer of the fi l l er rod The n atu re of the flame, whether n eu tral or oxi d i zi n g , shall be stated i n the t e s t report, 5.1.2.3 I f a cleaning fl u x i s necessary, the fl u x appropri ate t o the fi l l er rod being tested shall be applied D E TE R M I N ATI ON OF C ON VE N TI ON AL BON D 5.1 STRENGTH ON CAST I R O N Operatingprocedure Th.e operati n g procedure shall be as fol l ows : 5.1 Assembly 5.1 ,I Type of assembly and choice of parent metal 5.1.1.1 In order to determ i n e the conven ti on al bond Vee b u t t j o i n t assembly wi t h a gap made between bevelled i ron bars, as shown i n figure 4, a ro o t ru n shall be made; - the assembly shall be tu rn ed over and a ro o t ru n shall be made on the opposite side; strength o f braze weldi n g fi l l e r metals on ca s t i ron , a dou ble grey cast - shall be braze welded - each face o f the bevels shall be "bu ttered"; - one bevel shall be fi l l ed t o h al f i t s depth; - after tu rn i n g - 5.1.1.2 The bars shall be of grey ca s t i ron having a tensile strength of abou t 250 N /m m * 5.1 The faces o f the bevel, as wel l as the i m m edi ately carefu l l y machined or fi l ed , bu t 1) not ground, after tu rn i n g 5.2.1 - again, the fi rst Preparation tensile test pieces of and then Three t e s t pieces shall be taken A fl am e i s said t o be n eu tral wh en th e r a t i o o f oxyg en to acetyl en e i s n earl y eq u al t o I n tern ati o n al Org an i z ati o n fo r S tan d ard i z ati o n over Tensile t e s t s 5.2.1.1 degreased before assembly th e second bevel shall be fi l l ed com pl etel y fi l l ed 5.2 su rrou ndi n g areas (over a wi d th of t o m m ) , shall be over, com pl etel y by one or t wo runs; bevel shall be Th e in fi g u re 5.2 The ten si l e t e s t pieces sh all be m ach i n ed as sh own sh al l be oth erwi se speci fi ed, 6.1 at made and in I n am bi en t te m p e ratu re , accordance w i t h IS0 82 ord er to wel d i n g i ro n and a) I I expressed th e n ewton s o btai n e d by d i vi d i n g n ewton s, by th e expressed sh al l be I n tern ati o n al Org an i z ati o n fo r S tan d ard i z ati o n in square stated th e' i n i ti al i n th e th e co n ve n ti o n al Der sauare to tal bre aki n g l oad, cross-secti on al area m i l l i m e tre s te s t re po rt Th e bo n d m i l l i m e tre o f sh al l expressed th e po s i ti o n stren g th , of t e s t th e b) be in fi l l e r BON D and s te e l , th e rods co n ven ti on al on on pare n t bo n d metals al l oys, two stren g th oth er cases th an of cas t m u st be : Wrought (see break occu rs, in d eterm i n e braze Expression of results Wherever CON VEN TI ON AL Principle si d ered 5.3 OF D E TE R M I N ATI O N STREN G TH O N OTH ER M ETALS Tensile test requirements tests metals : proceed i n d i cate d as fo r steel cast i ro n clause ) ; Cast metals: proceed as i n d i cated fo r (see clause ) Assembly pi e ce , bre ak For sh al l each be type those of paren t m etal , appro pri ate t o th at th e operati n g proced u res m etal FI G U RE - Preparati on of assembly FI G U RE c - for braze-wel d i n g (steel ) Posi ti on o f test pieces (steel) 400 FI G U RE - Di mensi ons of prepared test pi ece (steel ) aoo 00 FI G U RE - I n tern ati o n al Org an i z ati o n fo r S tan d ard i z ati o n Preparati on of assembly for b razewel d i n g (cast i ro n ) FI G U RE - Di mensi ons of prepared test pi ece (cast i ro n )