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In order to control the roll production defects, improve quality and process, it is necessary to cut sampling and do metallographic analysis. For more than 300 mm diameter roller, using the traditional single-wheel cutting machine will cause the specimen overheating, over-burning, and the authenticity of the microstructure is poor, can neither maintain the original state of organization, nor meet the requirements of higher quality products. In this paper, a dual grinding wheel cutting machine is proposed, which can greatly shorten the processing time of large-sized metal sample with diameter over 300mm, and reduce the heat generation and get the best metal organization. It also studies the cutting process parameters and analyzed theoretically and experimentally. This paper also introduced the power adaptive adjustment method and process, and the influencing factors of cutting ability were analyzed and summarized.

Adaptive Power Control of Dual Grinding Wheels Metallographic Cutting Machine