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常规磨制金相试样,采用粗细不同的金相砂纸,手工先粗后细依次磨光,但这种方法不能适应我厂大批量制样要求.经试验,采用一盘贴有两种粗细不同的水砂纸磨制试样,效果良好,现介绍如下.将280~#和400~#的水砂纸分别剪成(?)200mm和(?)80mm圆片,用黄油贴于金相抛光机磨盘上,见附图.磨制试样时,先将试样置于磨盘边缘的粗砂纸上顺着一个方向,先轻后重,然后转90°方向磨,磨好后再将试样置于磨盘中心细砂纸上,用同样的办法磨制,同时边磨边滴水.用此法磨一只试样只需1～2min,试样磨好用水冲洗后即可进行抛光.此种方法,因抛光盘转速约1300 r/min,离心力很大,细磨在中心,粗磨在边缘,加之水力冲洗,砂粒
Conventional grinding of metallographic samples, the use of different thickness of metallographic sandpaper, hand rough first after fine polishing, but this method can not adapt to my factory sample preparation requirements in large quantities.Through the test, using a plate affixed with two kinds of thickness Different water sandpaper grinding samples, the effect is good, are described below.Will be 280 ~ # and 400 ~ # of water sandpaper were cut into (?) 200mm and (?) 80mm wafer with butter affixed to the metallographic polishing machine Grinding disc, see the picture. Grinding the sample, the first sample placed on the edge of the disc sandpaper along a direction, light and heavy, and then rotated 90 ° direction, grinding and then the sample set Grinding on the fine sandpaper center disc, using the same method of grinding, grinding while dripping edge with this method to wear a sample only 1 ~ 2min, the sample is washed with water after polishing can be polished .This method , Due to the polishing disc speed of about 1300 r / min, a large centrifugal force, fine grinding in the center, rough grinding at the edge, combined with hydraulic processing, sand