一九七○年我在山东省黄河位山工程局工作时,与广大工人一起,实验成功了采用含有碳酸钙的石头代替铝、锌制造熟硝镪水,并广泛应用于电话线路的焊接,现介绍如下: 1、制造方法首先将含有60%以上碳酸钙的石头加工成尺寸适当的小石块(大的如小杏,小的如豆粒),然后放入生硝镪水(强硝酸)中,配料比例为石块占生硝镪水的2～5%。两者 In 1970, when I was working in the Engineering Bureau of the Yellow River in Shandong Province, I worked with a large number of workers and successfully experimented with the use of calcium carbonate-containing stones instead of aluminum and zinc to make cooked-nitrate water. It was widely used in the welding of telephone lines, Here are the introduction: 1, the manufacturing method First of all, the stone containing more than 60% calcium carbonate into the appropriate size of small stones (large, such as apricot, small, such as beans), and then into the raw nitrate water (strong nitric acid) In the proportion of ingredients for the stones accounted for 2% to 5% of raw nitrate. Both