Fatigue properties of welded steering shafts
Fatigue properties of welded steering shafts
(OP)
WE have one appliocation for steering shaft for material handling equipment. Due to difficulties observed in shaping blind splines in 4140 shaft ( H/T to 28/32 HRC) we are changing it to broaching one end ( 3 inch long) and welding it to the other long end ( about 13 inches long).
My main concern is the fatigue properties of this welded joint. I do not have any information about the torque and no of life cycles.
Does any body has any information about the fatigue properties of such an application when a welded joint is used?
My main concern is the fatigue properties of this welded joint. I do not have any information about the torque and no of life cycles.
Does any body has any information about the fatigue properties of such an application when a welded joint is used?





RE: Fatigue properties of welded steering shafts
Cheers
Greg Locock
RE: Fatigue properties of welded steering shafts
But the suggestion to put a bolt thru will definitely help in strengthening the joint.
Greg Thanks for the help.
RE: Fatigue properties of welded steering shafts
Your shaft in socket engagement is a bit short, I'd really try and get enough length in there so the joint is operating in torsion, not combined torsion and bending
Cheers
Greg Locock
RE: Fatigue properties of welded steering shafts
Is there any website or technical reference book where I could find more information about steering gears design, manufacturing and problems etc. ?
I would try to see if we can provide more length by changing the design.