在金相试样制备过程中，预磨是抛光前的前道工程，先将试样预磨光后，可提高试样制备的功效，为适应在多种材料预磨的需要，该机的磨盘直径大于国内同类产品，磨盘的转速也不同于国内同类产品，是试样预磨的优质设备。

During Metallurgical Sample preparation, pre-grinding is a necessary prevenient work of polishing. Pre-grinding the samples can improve preparation efficiency. To adjust to all kinds of material pre-grinding, the grinding wheel size of YM-2 is larger than the same products in china. The rotating speed is different from other products. YM-2 is the best choice for Metallurgical Sample pre-grinding.

主要参数/Technical Date

磨盘直径Grinding Wheel Diameter：双盘Dual wheels 250mm

砂纸直径：Grinding Disc Diameter：230mm