| 摘要 |
PROBLEM TO BE SOLVED: To provide a crusher which has a liner fixed to the inner face a crushing chamber and shows a low rate of liner wear contributing to the reduced number of times of replacing the liner and thereby increasing the production efficiency. SOLUTION: This crusher, having a raw material supply aperture 3 formed on one end and a product delivery aperture 4 on the other end, comprises a crushing chamber 2 through which a rotary shaft 5 passes in the center, rotors 6, 7 which are fixed to the rotary shaft 5 and have blades 6a, 7a at the tip respectively and a liner 8 which is applied, in a freely detachable manner, to the inner area of the crushing chamber 2 and opposite to the outside of the blades 6a, 7a. A tungsten coating film 8a is formed on the surface of the liner 8 opposite to the blades 6a, 7a by means of flame spray coating.
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