1.

Explain the need of washing and drying of metallography samples before proceeding from one grinding or polishing operation to the next?

Answer»

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The surface of the specimen is first made flat by an abrasive belt or rotary disc machine. These machines are frequently equipped with COOLANT attachments to ensure cool cutting and to help wash abraded particles from the belt or disc. CARE should be taken to prevent OVERHEATING of the specimen during the ROUGH GRINDING stage.



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