Galling prevention.
Mating surfaces.
Friction failures.
Galling and wear prevention reference. Adhesive wear at sliding interface. Material selection, surface treatment, lubrication strategies.
Key principles.
Different alloys
Mating dissimilar materials. Bronze + stainless OK. Stainless + stainless avoid.
One hard, one soft
Hardness difference reduces galling. Hardened steel + bronze.
Hard chrome, nitriding
Surface hardening reduces galling tendency.
Active or self-lubricating
Lubricate or use self-lubricating material.
Threaded fasteners
Anti-seize on stainless threads. Critical.
Smoother better
Smoother surfaces reduce galling. Polished or ground.
FAQ
What causes galling?
Adhesive wear at sliding interface. Microscopic peaks weld together. Common in stainless.
Stainless-on-stainless avoidance?
Avoid pairing. Use bronze, plated, or surface-treated mating part.
Anti-seize compound?
Apply on threads, sliding interfaces. Stainless particularly benefits. Standard for marine/chemical.
Surface treatments?
Hard chrome (67-72 HRC). Nitriding (case 60+ HRC). DLC (premium). Bronze plating.
Lubricant types?
Active oil/grease for sliding. Solid-film (PTFE, MoS2) for assembly. Self-lubricating bushing.
Cost considerations?
Galling failure expensive. Prevention small premium. Worth investment for critical sliding interfaces.
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