Embed Size (px)
Citation preview
welding qualification according to ISO 5817
level B
(cooling channel welds)
Part 1
!"#$%&'()*'+&%)&,'-.$",/'-'0&12,3$/345*'6%47"%'83&9'4:'/;&'"11%<='3#$&,:&2/345'(!>'[email protected].@AB='&C2&1138&')31/4,/345'"5)'3#$&,:&2/345'(!>'[email protected].?B-='1/,"<'",2'>,3D35"%'#"D53:32"/345*'EF-'C'1"51'24"C3"%'
!"#$%&'()*'+&%)&,'-.$",/'-'0&12,3$/345*'0&/"3%'4:'4$$413/&'9&%)'7&")1='3#$&,:&2/345'(!>'[email protected]='1;,35G"D&'2"83/<'"/'/;&',44/'4:'/;&'9&%)'>,3D35"%'#"D53:32"/345*'@BFB'C'1"51'24"C3"%'
•distortion is not specified in norm,
•stray arc and small cavity do not fulfil the norm.
Part 1(left), welder 1
!"#$%&'()*'+&%)&,'-.$",/'-'0&12,3$/345*'6%47"%'83&9'4:'/;&'"11%<='3#$&,:&2/345'(!>'[email protected].@AB='&C2&1138&')31/4,/345'"5)'3#$&,:&2/345'(!>'[email protected].?B-='1/,"<'",2'>,3D35"%'#"D53:32"/345*'EF-'C'1"51'24"C3"%'
!"#$%&'()*'+&%)&,'-.$",/'-'0&12,3$/345*'0&/"3%'4:'4$$413/&'9&%)'7&")1='54'83137%&'3#$&,:&2/345'>,3D35"%'#"D53:32"/345*'@BFB'C'1"51'24"C3"%'
•distortion is not specified in norm,
•stray arc does not fulfil the norm.
Part 1(right), welder 1
7+89,)(:2;(!"#$"%&'()*%+&,&&'+/16<65+*631;(56.6&/&0*10&23*/4*#&&=+*);(,5.6-.'6,6&&=)45.69*631;(D"+*4#&3;&;4##"+&:"#$?&4=)"%;"2+431&@AB&C5'6(,('6'?&0<%41E*F"&*+&+<"&%33+&3;&+<"&:"#$&&
7+89,)(:2;(!"#$"%&'()*%+&,&&'+/16<65+*631;(56.6&/&0*10&23*/4*#&&=+*);(,5.6-.'6,6&&=)45.69*631;(D"+*4#&3;&3))304+"&:"#$&8"*$0?&13&94048#"&4=)"%;"2+431&
7+89,)(:2;(!"#$"%&'()*%+&,&&'+/16<65+*631;(-.,&/&0*10&23*/4*#&&=+*);(,5.6-.'6,6&&=)45.69*631;(7#38*#&94":&3;&+<"&*00"=8#>?&4=)"%;"2+431&@AB&C5'6(,(5'6?&"/2"0049"&$40+3%+431&*1$&4=)"%;"2+431&@AB&C5'6(,(C6,?&0+%*>&*%2&&
Part 1(left), welder 1I
Part 1(right), welder 1I
7+89,)(:2;(!"#$"%&'()*%+&,&&'+/16<65+*631;(56.6&/&0*10&23*/4*#&&=+*);(,5.6-.'6,6&&=)45.69*631;(D"+*4#&3;&3))304+"&:"#$&8"*$0?&4=)"%;"2+431&@AB&C5'6(,('6'?&0<%41E*F"&*+&+<"&%33+&3;&+<"&:"#$&&
7+89,)(:2;(!"#$"%&'()*%+&,&&'+/16<65+*631;(56.6&/&0*10&23*/4*#&&=+*);(,5.6-.'6,6&&=)45.69*631;(D"+*4#&3;&;4##"+&:"#$?&13&94048#"&4=)"%;"2+431&
7+89,)(:2;(!"#$"%&'()*%+&,&&'+/16<65+*631;(-.,&/&0*10&23*/4*#&&=+*);(,5.6-.'6,6&&=)45.69*631;(7#38*#&94":&3;&+<"&*00"=8#>?&4=)"%;"2+431&@AB&C5'6(,(5'6?&"/2"0049"&$40+3%+431&&
Part 1I
!"#$%&'()*'+&%)&,'-.$",/'0'1&23,4$/456*'7%58"%'94&:';,4<46"%'#"<64=43"/456*'->?>'@'2"62'35"@4"%'
Part 1I(left), welder 1
!"#$%&'()*'+&%)&,'-.$",/'0'1&23,4$/456*'1&/"4%'5='466&,'/A8&':"%%B'$,58"8%&'$,&2&63&'5='#",/&624/&';,4<46"%'#"<64=43"/456*'->>?>'@'2"62'35"@4"%'
• martensite probably formed because tube was held in position by an inner pin, when the weld cooled down, and the material was subject to plastic deformation,
• only a problem for cryogenic temperatures or if magnetism is critical.
Part 1I(right), welder 1
!"#$%&'()*'+&%)&,'-.$",/'0'1&23,4$/456*'7%58"%'94&:';,4<46"%'#"<64=43"/456*'->?>'@'2"62'35"@4"%'
!"#$%&'()*'+&%)&,'-.$",/'0'1&23,4$/456*'1&/"4%'5='466&,'/A8&':"%%B'$,58"8%&'$,&2&63&'5='#",/&624/&';,4<46"%'#"<64=43"/456*'->>?>'@'2"62'35"@4"%'
•same as for left side,
Part 1I(left), welder 1I
!"#$%&'()*'+&%)&,'-.$",/'-'0&12,3$/345*'6%47"%'83&9':,3;35"%'#";53<32"/345*'=>?>'@'1"51'24"@3"%'
!"#$%&'()*'+&%)&,'-.$",/'-'0&12,3$/345*'0&/"3%',44/'4<'/A&'9&%)B'3#$&,<&2/345'(!:'CD->.=.->-B'1A,35E";&'"/'/A&',44/'4<'/A&'9&%)':,3;35"%'#";53<32"/345*'D>?>'@'1"51'24"@3"%'
•does not fulfil the norm,•but is not significant.
Part 1I(right), welder 1I
!"#$%&'()*'+&%)&,'-.$",/'-'0&12,3$/345*'6%47"%'83&9':,3;35"%'#";53<32"/345*'=>?>'@'1"51'24"@3"%'
!"#$%&'()*'+&%)&,'-.$",/'-'0&12,3$/345*'0&/"3%'<A%%'$&5&/,"/345B'3#$&,<&2/345'(!:'CD->.=.D=CB',44/'$4,413/E':,3;35"%'#";53<32"/345*'D>?>'@'1"51'24"@3"%'
•does not fulfil the norm,•but is not significant.
Part III
Part III (left + right), welder 1:perfect welds!
!"#$%&'()*'+&%)&,'-.$",/'0'1&23,4$/456*'7%58"%'94&:;'65'94248%&'4#$&,<&3/456;'$&6&/,"/456'5<'=>=-'##'?,4@46"%'#"@64<43"/456*'=A>A'B'2"62'35"B4"%'
!"#$%&'()*'+&%)&,'-.$",/'0'1&23,4$/456*'7%58"%'94&:;'65'94248%&'4#$&,<&3/456;'$&6&/,"/456'5<'->CD'##'?,4@46"%'#"@64<43"/456*'=A>A'B'2"62'35"B4"%'
!"#$%&'()*'+&%)&,'-.$",/'0'1&23,4$/456*'7%58"%'94&:'65'94248%&'4#$&,;&3/456<'$&6&/,"/456'5;'-=>?'##'@,4A46"%'#"A64;43"/456*'-B=B'C'2"62'35"C4"%'
!"#$%&'()*'+&%)&,'-.$",/'0'1&23,4$/456*'7%58"%'94&:<'65'94248%&'4#$&,;&3/456<'$&6&/,"/456'5;'-=?'##'@,4A46"%'#"A64;43"/456*'-B=B'C'2"62'35"C4"%'
Part III (left + right), welder 1I:perfect welds!
Part IV
!"#$%&'()*'+&%)&,'-.$",/'0'1&23,4$/456*'7%58"%'94&:;'$&6&/,"/456'5<'=>?@'##'A,4B46"%'#"B64<43"/456*'-?>C'D'2"62'35"D4"%'
!"#$%&'()*'+&%)&,'-.$",/'0'1&23,4$/456*'1&/"4%',55/'5<'/E&':&%);'4#$&,<&3/456'(!A'?F=C.-.F-?;',55/'$5,524/G'A,4B46"%'#"B64<43"/456*'FC>C'D'2"62'35"D4"%'
Part 1V(left), welder 1
•probably not critical,•but could be improved ,
Part 1V(right), welder 1
!"#$%&'()*'+&%)&,'-.$",/'0'1&23,4$/456*'7%58"%'94&:;'$&6&/,"/456'5<'=>??'##'@,4A46"%'#"A64<43"/456*'-B>C'D'2"62'35"D4"%'
!"#$%&'()*'+&%)&,'-.$",/'0'1&23,4$/456*'1&/"4%',55/'5<'/E&':&%);'4#$&,<&3/456'(!@'B?=C.-.0CC;'%"3F'5<'<G2456'@,4A46"%'#"A64<43"/456*'?C>C'D'2"62'35"D4"%'
•probably not critical,•but could be improved,
Part IV (left + right), welder 1I:perfect welds!
!"#$%&'()*'+&%)&,'-.$",/'0'1&23,4$/456*'7%58"%'94&:;'65'94248%&'4#$&,<&3/456;'$&6&/,"/456'5<'-=>?'##'@,4A46"%'#"A64<43"/456*'BC=D'E'2"62'35"E4"%'
!"#$%&'()*'+&%)&,'-.$",/'0'1&23,4$/456*'7%58"%'94&:;'65'94248%&'4#$&,<&3/456;'$&6&/,"/456'5<'F=B'##'@,4A46"%'#"A64<43"/456*'BC=D'E'2"62'35"E4"%'
Welder 1I:•Part 1: Excessive distortion
+ stray arc + shrinkage cavity could be observed•Part 2: Full penetration on
inner tube, root oxidation could be observed.•Part 3: Penetration between
2.1 mm and 2.4 mm •Part 4: Penetration between
2.9 mm and 3.1 mm
Welder 1:•Part 1: Excessive distortion
+ stray arc + shrinkage cavity could be observed.•Part 2: No weld
imperfection could be observed, probable presence of martensite.•Part 3: Penetration between
1.8 mm and 2.2 mm.•Part 4: Penetration of 2.6
mm, root oxidation + lack of fusion could be observed.
Summary
Root oxidation (“backfilling” with protective gas?) and lack of fusion are not permitted according to level B of ISO 5817
