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在我厂的产品中,不锈钢零件很多,为了保证这些产品的质量,在检验时对被检零件必须作出明显标记,以区分合格与否的等级,分清职责,防止错检、漏检,急需配制一种印字药水。不锈钢材料的耐腐蚀性强,在常温时难溶于酸,而印字药水只能在常温条件下使用,所以除了有供显色的试剂外,还必须找到一种能在常温时对不锈钢有溶解腐蚀能力的溶解酸,才能使置换、还原反应得以在零件表面进行,在零件上显现出颜色来。经过试验,发现盐酸在其浓度为1:1
In my factory products, many stainless steel parts, in order to ensure the quality of these products, the inspection of the parts must be clearly marked in order to distinguish the level of qualified or not, to distinguish responsibilities, to prevent misjudgment, missed seizure, the urgent need to formulate A printing syrup. Strong corrosion resistance of stainless steel, insoluble in acid at room temperature, and printing syrup can only be used under normal temperature conditions, so in addition to reagents for color, you must also find a solution at room temperature can have a stainless steel Corrosion ability of the dissolved acid, in order to make replacement, the reduction reaction can be carried out on the surface of the part, the color appears on the parts. After testing, we found that hydrochloric acid at its concentration of 1: 1