design of weld joint

8/16/2019 Design of Weld Joint

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Design of Weld Joint



TYPES OF Weld Joint AND WELDS

• Types of Joints

– Butt joint

– Cone joint – L!p joint

– Tee joint

– Ed"e joint

• Types of Welds

– Fillet #eld – $oo%e #eld

– Plu" !nd slot #elds

– Spot !nd Se!& #elds

– Fl!n"e !nd Suf!'in" #elds



-----T joint----



Butt welds : A (utt #eld is &!de (et#een t#o pie'es of &et!l usu!lly in

t)e s!&e pl!ne* t)e #eld &et!l &!int!inin" 'ontinuity (et#een t)e

se'tions+ #eld &et!l is "ene!lly 'ont!ined #it)in t)e pofiles of t)e #elded

ele&ents



Fillet welds : T)ese #elds !e ou")ly ti!n"ul! in 'oss se'tion !nd

(et#een t#o suf!'es not in t)e s!&e pl!ne !nd t)e #eld &et!l is

su(st!nti!lly pl!'ed !lon"side t)e 'o&ponents (ein" joined+ Deposited #eld

&et!l is e,ten!l to t)e pofile of t)e #elded ele&ents



-A./O0S

PA.TS

OF

WELDS



WELD JOINT PREPARATION+



Weld joint pep!!tion



Weld joint fit up (efoe #eldin"+ T)e #eld "oo%e #)i') is to

(e filled (y #eldin" '!n (e seen+



Weld joint fit up fo ! pipe to edu'e joint* t)e oot "!p is 'le!ly %isi(le+



Dou(le -ee Weld "oo%e fit up fo pl!tes (end in to pipes



Weldin" se1uen'e+

Welding se"uen#e :



Welding se"uen#e



Welded l!$es



%EAT AFFE&TED 'ONE%EAT AFFE&TED 'ONE

W)en t)e #eld pool is 'oolin"

!nd solidifyin"* t)e &!joity of t)e)e!t flo#s t)ou") t)e p!ent

&et!l !lon"side t)e joint+ T)e

steel is t)us su(je'ted to )e!tin"

!nd 'oolin" 'y'les si&il! to

t)ose e,peien'ed in )e!t

te!t&ent p!'ti'e+

As s)o#n in Fi"ue 2* t)e

stu'tue of t)e steel #ill (e

')!n"ed in t)is e"ion

3'!lled t)e )e!t !ffe'ted

4one* 5A67



%EAT AFFE&TED 'ONE

T)e stu'tue of t)e 5A6 #ill (e 'ontolled (y8

•t)e 'o&position of t)e steel 3'!(on e1ui%!lent7+•t)e 'oolin" !te in t)e 5A6+

/n tun t)e 'oolin" !te is dete&ined (y8•!' ene"y* i+e+ )e!t input to t)e joint+•type of joint+•t)i'9ness of steel+•te&pe!tue of steel pl!te o se'tion pio to

#eldin"* e+"+ pe)e!t

design of weld joint

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