论文部分内容阅读
为了增加钢铁管的防腐性能，一般是将钢管的内外壁镀上锌层加以保护。进口镀锌管的检验项目中规定，镀锌层内伴生元素（如锑、镉等）各有其最高限量。以前对镀锌层重量加以分析（ｇ／ｍ２）［１］，这只能在表观上检验镀锌层的厚度是否达到要求，而对镀锌层内的杂质元素的分析
In order to increase the corrosion resistance of steel pipe, the inner and outer walls of the pipe are generally coated with zinc to protect it. Imported galvanized pipe inspection program provides that the associated elements within the galvanized layer (such as antimony, cadmium, etc.) have their own maximum amount. In the past, the weight of galvanized coating was analyzed (g / m2) [1]. This only verifies whether the thickness of galvanized coating meets the requirements, while the analysis of the impurity elements in galvanized coating