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Archive for February, 2009
Manganese Content
Posted by mani from houston, TX, US on February 27, 2009
Steve:
What is the typical or minimum manganese content in the jaw plate of rock crusher. Also, Mn content of rock crusher cones. Compared to autoshredder, do rock crushers usually contain higher manganese steel?
The minimum manganese content for jaws or cones is specified by each manufacturer. Columbia Steel’s minimum Mn contents for jaws & cones are 12%. Other elements are added to enhance the properties of Mn giving it better strength & ductility.
Bridging in Jaw
Posted by Dan from Pickering, ON, CA on February 10, 2009
We replaced the jaw dies in our 32 40 jaw with dies recommended by our supplier for recycling concrete. The stationary jaw has smooth sides. Material begins to bridge on the side and spreads across entire jaw untill jaw plugs. Any suggestions?
The problem described typically occurs when there is too large of a void between the edge of the jaw & the cheek plate. Usually when the void is filled in on the casting, it eliminates the situation described. In order to diagnose your problem correctly, I would need to visually see the situation you have described. Photos would be best. You can email photos to me at steve_dz@columbiasteel.com if you would like me to take a closer look.