What Does Galling Mean?


Answer:
Galling is a process that causes friction when metal parts like nuts and bolts are rubbed together among the high spots on the surface. The friction within turn generates heat and causes the asperities or elevated points to weld together. It is not the same as cold welding. This is common surrounded by metals like steel, where the stainless steel oxide surface breaks down due to direct metal contact. It in consequence lead to solid-phase welding.

Galling causes surface damage and seize as well as freezing up of the equipment. Galling occurs due to the pressure building up between the thread surfaces of the bolts and nuts in cross-examine. Thus it refers to the damage caused to the surfaces of metals due to the sliding contact with respectively other. Apart from steel this phenomenon is also seen in metals like aluminium alloys and titanium. Galling cause clumps of one part to stick to the other part and break away from the original surface.

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