Crushers - 911 MetallurgistMay 24, 2017 . With the change-over to cast steel for the main components of these machines came the introduction of manganese steel for the crushing faces.metal laumontite crusher introduction,Different Types of Rock Crushers - - Crusher Rental & SalesThe rock crusher was first introduced in 1830, and it consisted of a drop hammer. . that uses impact to crush the rocks against the sides of the large metal cage.Jaw Crusher Information - Aggregate DesignsIntroduction to Jaw Crushers . Protecting the Jaw Crusher: the Toggle Plate. 8 . the inward facing side with dies made of manganese, an extremely hard metal.
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