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一、淬火剂的配制:先将45%的水玻璃(40°Be′)加水稀释至20°Be′,然后加入8%的苛性钠(NaOH).最后将浓度调整为25°Be′使用温度20°～50℃。
First, the preparation of quenching agent: first 45% of the water glass (40 ° Be ’) diluted with water to 20 ° Be’, then add 8% caustic soda (NaOH) Finally adjusted to a concentration of 25 ° Be ’ 20 ° ~ 50 ℃.