论文部分内容阅读
为了研究不同的精炼方法对铝青铜中夹杂含量的影响,应用了(基洛夫工厂)的试验方法。其实质是用一种电解溶液,成分为:无水硫酸铜30克/升,浓磷酸25毫升/升,柠檬酸或柠檬酸钠30克/升,电流密度0.02安/厘米~2,此时的溶解速度为1克/小时。溶解的试样φ15毫米,高120毫米,从铸件的中间切取。试样表面用电解腐蚀、清洗和干燥,而后称重,精度为1/100克。为得到可靠结果,溶解金属量应<20克。非金属夹杂沉淀物收集在棉胶袋
In order to study the influence of different refining methods on the inclusions in aluminum bronze, a test method (Kirov Factory) was used. Its essence is to use an electrolytic solution, composition: anhydrous copper sulfate 30 g / l, concentrated phosphoric acid 25 ml / l, citric acid or sodium citrate 30 g / l, the current density of 0.02A / cm ~ 2, this time The dissolution rate was 1 g / hr. The dissolved sample φ15 mm, height 120 mm, cut from the middle of the casting. The surface of the sample is electrolytically etched, washed and dried before being weighed to an accuracy of 1/100 g. For reliable results, the amount of dissolved metal should be <20g. Non-metallic inclusions are collected in a cotton swab