Corrosion Protection on Torsion Bar Springs
Corrosion Protection on Torsion Bar Springs
(OP)
I'm familiar with the usage of tape as a means of corrosion prevention on torsion bar springs but am curious as to what other options are currently used.
I'm familiar with the usage of PVC pressure sensitive adhesive, but have been having issues with corrosion pockets developing and tape degradation, leading to failures. Also, if using tape, what variables should be considered in choosing a proper tape and is PVC a viable option?
I'm familiar with the usage of PVC pressure sensitive adhesive, but have been having issues with corrosion pockets developing and tape degradation, leading to failures. Also, if using tape, what variables should be considered in choosing a proper tape and is PVC a viable option?





RE: Corrosion Protection on Torsion Bar Springs
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RE: Corrosion Protection on Torsion Bar Springs
Regards,
Cory
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RE: Corrosion Protection on Torsion Bar Springs
I've heard this rule of thumb from the old people in my factory, regarding suspension parts:
-Microphosphating + cathodic electrocoating if the part is not exposed to impacts from small particles at high speed (i.e. a seat component)
-Microphosphating + powder organic coating for exposed suspension parts, if the part needs to resist a "gravel test" (not sure how it is said in english) where they launch small particles into the part.
RE: Corrosion Protection on Torsion Bar Springs
For automotive springs, electrocoating is used for lower-cost applications. For higher performance applications, powder coating is used either as a thick single layer, or as a topcoat over an electrocoating basecoat.
Regards,
Cory
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RE: Corrosion Protection on Torsion Bar Springs
The application I'm concerned with it for more of a high-performance application in which the torsion bar is under quite high stresses. The fact that in the automotive industry a paint or primer is only needed leads me to believe that perhaps our torsion bar is under-designed. Currently we use the tape for both corrosion protection and also protection against impact of gravel and rock.
RE: Corrosion Protection on Torsion Bar Springs
This is quicker than tape but the bar must be off the car for it to be done.
For an assembly line it is far to expensive but for a limited production it may be viable.
Pete.