GALVANIZING SOLUTION, GALVANIZATION METHOD AND METHOD OF EVALUATING HYDROGEN EMBRITTLEMENT SENSITIVITY OF STEEL PRODUCT

摘要

PPROBLEM TO BE SOLVED: To provide a galvanizing solution used for galvanization applied on the surface of a steel product whose hydrogen embrittlement sensitivity is to be valuated, a galvanization method thereof and a method of evaluating the hydrogen brittlement sensitivity using a test piece in which high concentration diffusive hydrogen is sealed by the galvanization method. PSOLUTION: The diffusive hydrogen is sealed in the steel product by carrying out the galvanization applied on the surface of the steel product after the diffusive hydrogen is introduced using the galvanizing solution containing 20-70 g/l zinc chloride, 140-230 g/l ammonium chloride, 1-100 g/l boric acid, 0.1-20 g/l depolarizer, 0.001-20 g/l brightening agent and 0.01-50 g/l smoothing agent and after that, the hydrogen embrittlement sensitivity is evaluated. PCOPYRIGHT: (C)2008,JPO&INPIT