Dimensional change in A36 steel due to stress relieve
Dimensional change in A36 steel due to stress relieve
(OP)
Does stress relieving A36 steel cause any dimensional changes? If so, then how much? Thanks for your help!
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Dimensional change in A36 steel due to stress relieve
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RE: Dimensional change in A36 steel due to stress relieve
What type of tolerance are you talking about? +/-.0001 or +/-.001 or +/-.010? Anything less than +/-.001 I would plan on machining after heat treat.
What type of a stress relieve are you contemplating? Heat treat or vibratory? Relieving welding stress cause some movement of the parts.
Heating most metals into the stress relieving range reduces the strength of the material and if not held properly in the furnace may change shape. Atmosphere control must be used.
Heat treatment of gears and splines typically cause and external gear or spline to grow in size and depending on the repeatability of the heat treat process can be repetitive. All bets are off if you use differing heat treaters from batch to batch. The amount of growth is based on experience and usually is not calculated.
RE: Dimensional change in A36 steel due to stress relieve
These are weldments: base plates (with premachined holes) and risers, some with plates welded to the top of the risers. Stress relieving will be after welding, by heat treatment. My concern is with how it will affect the spacing between the holes. The fixtures are about 2' x 4' in size.
RE: Dimensional change in A36 steel due to stress relieve