METHOD FOR PREVENTING CORROSION BETWEEN TWO WORKPIECES
First Claim
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1. A method for treating joined workpieces, comprising the steps of:
- joining an end fitting into a driveshaft tube resulting in a gap between said end fitting and said tube;
cleaning said gap of said joined end fitting and said driveshaft tube;
drying said gap of said joined end fitting and said driveshaft tube;
rotating said joined end fitting and tube together;
applying a urethane coating to said gap with a dispensing head located adjacent said rotating joined end fitting and tube, said coating penetrating into said gap and extending laterally beyond said gap; and
curing said coating with an ultraviolet light source.
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Abstract
A method for protecting joined workpieces from salt or other environmental hazards is described. The method may include joining an end fitting into a driveshaft tube which results in a gap between the two. The gap may be cleaned and dried before a moisture protecting urethane coating is applied. A urethane coating may be sprayed on as the joined end fitting and tube are rotated together. The coating penetrates into the gap and extends laterally beyond the gap and is subsequently cured with an ultraviolet light source.
8 Citations
14 Claims
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1. A method for treating joined workpieces, comprising the steps of:
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joining an end fitting into a driveshaft tube resulting in a gap between said end fitting and said tube; cleaning said gap of said joined end fitting and said driveshaft tube; drying said gap of said joined end fitting and said driveshaft tube; rotating said joined end fitting and tube together; applying a urethane coating to said gap with a dispensing head located adjacent said rotating joined end fitting and tube, said coating penetrating into said gap and extending laterally beyond said gap; and curing said coating with an ultraviolet light source. - View Dependent Claims (2, 3, 4, 5, 6, 13)
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7. A method for treating joined workpieces, comprising the steps of:
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locating an end fitting into a driveshaft tube resulting in a circumferential interface between said end fitting and said tube, said interface subject is to a torsional load; applying a first continuous urethane coating into and laterally beyond said interface to create a moisture seal about said interface; curing said first continuous urethane coating with an ultraviolet light source; applying at least a second continuous coating on top of said first coating; and
curing said second coating. - View Dependent Claims (8, 9, 10, 11, 14)
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12. A driveshaft assembly with a urethane coating applied over a gap, wherein the gap is formed at a welding interface after magnetic pulse welding.
Specification