我们使用的铰刀,常常因磨损而报废。如果把磨损了的铰刀进行一次低温液体氰化,可以使铰刀磨损部分的尺寸增大(一般涨大0.02～0.04毫米),再重复使用。具体作法如下: 1.在氰化钠50%和氰化钾50%的氰盐中,在温度560℃时,把铰刀的刃部全放入,并保持30～50分钟。2.取出后在空气中冷却。3.中和,采用10%亚硫酸铁的水溶液,温度60℃,10～15分钟。 The reamers we use are often scrapped due to wear and tear. If the worn reamer cyanidation of a liquid at low temperature, you can make reamer wear part of the size increases (generally increased 0.02 ~ 0.04 mm), and then reused. The specific practices are as follows: 1. In sodium cyanide 50% and potassium cyanide 50% of the cyanide, at a temperature of 560 ℃, the reamer blade into the whole, and maintain 30 to 50 minutes. 2. Remove and cool in air. 3. Neutralization, using 10% aqueous solution of ferrous sulphate, temperature 60 ℃, 10 to 15 minutes.