本文对热镀锌渣真空蒸馏回收金属锌的原理和工艺进行探讨，理论计算和工业试验均证实该法的可行性。
The theory and technics of recovering metal zinc from the hot galvanizing scrap by vacuum distillation are discussed. The calculation and industrial experiment show the feasibility of this method.
实验结果表明：采用辊涂法预处理液c 50可获得耐蚀性、涂装性及加工性均优的合金化热镀锌有机涂层钢板。
The results of study show that: if the rolling chemical pretreatment solution C50 is used, the products with both high corrosion resistance and good bonding can be obtained.
文中着重介绍了新工艺采用微氧化还原法的原理生产热镀锌钢管的方法、机理、试验情况等。
Emphasis is laid on applying the principle of "Slight oxidation-reduction method" to production of hot dip galvanized steel pipes. The manufacturing method, mechanism and test results are introduced.
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