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用于仪表的某种合金,经过淬火热处理后,需要进行酸洗,洗去表层氧化皮,故要摸索一种酸洗液,使之既能很容易地将氧化皮从材料本身上剥落,又不损害材料本身。对这种酸洗液,在两年多的时间内,曾摸索过二次。第一次毫无经验,试以硝酸作为酸洗液的主要成份,再加入适量盐酸和硫酸。酸洗液是配成了,但是酸洗质量很差,酸洗之后,要用尼龙刷用力刷洗,才能刷去表层氧化皮,而且材料本身遭受严重腐蚀。第二次酸洗液配方的摸索,根据有关资料,试在硝酸液中加入氢氟酸,若配一升酸洗液,令硝酸的加入量在0～500毫升之间变化,当取定一硝酸加入量后,让氢氟酸一滴一滴地加入酸洗液中,观察合金酸洗质量,如此
Some alloys used in instrumentation, after quenching and heat treatment, the need for pickling, wash away the surface scale, it is necessary to explore a pickling solution, so that it can not only the oxide scale from the material itself flaking, and Do not damage the material itself. This pickling solution, in more than two years time, had groped twice. The first time inexperienced, try nitric acid as the main component of pickling, then add the appropriate amount of hydrochloric acid and sulfuric acid. Pickling liquid is made up, but the pickling quality is very poor, pickling, brushing with a nylon brush to brush to the surface oxide, and the material itself suffered serious corrosion. The second pickling solution to explore, according to the relevant information, try to add hydrofluoric acid in nitric acid solution, if with a liter of pickling solution, so that the amount of nitric acid added in the range of 0 to 500 ml, After the nitric acid is added, the hydrofluoric acid is added drop by drop to the pickling liquid to observe the pickling quality of the alloy, and the like