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为了解决金相观察问题,我们利用硬度计的读数显微镜标尺,复制成目镜测微标尺,制法如下: 1.底片的处理:取一小块X光底片(最好是新底片),浸入20%氢氧化钾及2%高锰酸钾混合液中,数分钟后取出,移入水中用毛刷刷去褐色胶膜,反复操作至底片呈透明无色,阴干备用。若略带淡黄色,可于亚硫酸中处理数秒钟。 2.标尺的处理:取下读数显微镜的标尺,用石墨粉轻轻抹入标尺的刻痕,除去多余的石墨粉后,于放大镜下仔细检查,以确保标尺的清晰。 3.复印:标尺平放在橡皮板上(刻痕朝上),滴加3～5滴三氯甲烷,迅速将底片复盖在标尺上,上压橡
In order to solve the problem of metallographic observation, we use the hardness of the reading microscope ruler, copied into the eyepiece micrometer, as follows: 1 negative film processing: Take a small piece of X-ray film (preferably a new film), immersed in 20 % Potassium hydroxide and 2% potassium permanganate mixture, remove a few minutes later, into the water with a brush to brown film, repeated until the film was transparent and colorless, dry reserve. Slightly yellowish, can be treated with sulfite for a few seconds. 2. Ruler processing: remove the reading microscope ruler, gently wipe the graphite ruler scored marks, remove excess graphite, carefully under the magnifying glass to ensure that the ruler clear. 3. Copy: Scale flat on the rubber plate (indentation up), dropping 3 to 5 drops of chloroform, the film quickly covered in the ruler, the pressure on the rubber