charlesv842
ArboristSite Lurker
How do I know if I have it? What's the difference between that and worn chrome?
What does aluminum transfer look like?
- Thread starter charlesv842
- Start date
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That does not look like transfer. If nothing else, you can feel transfer. You'll know it when you see it.
What does it look like from where you are sitting?
Worn NiSi/Chrome. Not worn out, just worn.
OK here is the pic after I honed it. Now what did it look like?
This is what a worn out cylinder looks like!
This was mine. Piston was trashed.
Looks good to go.
Thankfully, with the price of a new OEM one.
southland1
ArboristSite Member
This is what mine looked like.
http://www.arboristsite.com/community/threads/stihl-ms390-locked-piston.298568/page-4
http://www.arboristsite.com/community/threads/stihl-ms390-locked-piston.298568/page-4
Stolen off wiki...
Galling is a form of wear caused by adhesion between sliding surfaces. When a material galls, some of it is pulled with the contacting surface, especially if there is a large amount of force compressing the surfaces together. Galling is caused by a combination of friction and adhesion between the surfaces, followed by slipping and tearing of crystal structure beneath the surface. This will generally leave some material stuck or even friction welded to the adjacent surface, whereas the galled material may appear gouged with balled-up or torn lumps of material stuck to its surface.
Galling is most commonly found in metal surfaces that are in sliding contact with each other. It is especially common where there is inadequate lubrication between the surfaces. However, certain metals will generally be more prone to galling, due to the atomic structure of their crystals. For example, aluminum is a metal that will gall very easily.
Galling is a form of wear caused by adhesion between sliding surfaces. When a material galls, some of it is pulled with the contacting surface, especially if there is a large amount of force compressing the surfaces together. Galling is caused by a combination of friction and adhesion between the surfaces, followed by slipping and tearing of crystal structure beneath the surface. This will generally leave some material stuck or even friction welded to the adjacent surface, whereas the galled material may appear gouged with balled-up or torn lumps of material stuck to its surface.
Galling is most commonly found in metal surfaces that are in sliding contact with each other. It is especially common where there is inadequate lubrication between the surfaces. However, certain metals will generally be more prone to galling, due to the atomic structure of their crystals. For example, aluminum is a metal that will gall very easily.
