Weld shrinkage
Weld shrinkage
(OP)
When welding a series of carbon steel cylinders together,
is there any "rule of thumb" for the expected weld shrinkage?
is there any "rule of thumb" for the expected weld shrinkage?
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RE: Weld shrinkage
No. Weld shrinkage is based on several factors (weld size, orientation, deposit sequence, size of the component, filler metal stregnth, preheat, base metal strength......) As you can see predicting weld shrinkage is complex.
RE: Weld shrinkage
Regards,
Mike
RE: Weld shrinkage
Are you sure about these values? Stainless and carbon steel have different COE, strength values, and I find it hard to believe these numbers.
RE: Weld shrinkage
BobfromOH
RE: Weld shrinkage
My current company doesn't seem to account for shrinkage at all, you just go off nominals.
Its just blacksmithing.
Regards,
Mike
RE: Weld shrinkage
Rod
RE: Weld shrinkage
RE: Weld shrinkage
Regards,
Mike
RE: Weld shrinkage
From a book called "principles of welding technology"
ISBN 0 7131 3402 X
longitudinal shrinkage:-
L1 = Lo * (1-?*?T)
Lo= original length
?= coeff of linear expansion
?T= temperature change after welding (ie melting to solid)
transverse shrinkage:-
transverse shrinkage= k*A/t
k=empirical factor between 0.1 and 1.17
A= cross sectional area of weld
t= thickness of plate
These are for butt welds and are only approximate, maybe if you do some experimental work for your product you can establish some data and combined with the above determine
the "k" factor and hence get a better approximation of the weld shrinkage.
regards
desertfox