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为了测定结构钢的淬透性能,按照标准规定:一般应采用直径25毫米,长100毫米标准的圆柱形试样试验钢料(不适用于风淬合金钢)的淬透性能。我们知道,影响淬透性的因素较多,综合起来不外乎钢料本身(化学成分、奥氏体晶粒度和均匀度等)和外形因素(试样之大小、形状,表面状态和冷却剂等)两大类。因此,测定淬透性能时,最好试样是标准的,因为非标准的试样其冷却情况与标准的并不相同。这样,测定的结果不能与标准的比较。但在不可能制造标准
In order to determine the hardenability of structural steels, according to the standard, the hardenability of steel (not suitable for air quenched alloy steel) of cylindrical test specimens of 25 mm in diameter and 100 mm in length should generally be used. We know that there are many factors that affect the hardenability, which can not be combined with the steel itself (chemical composition, austenite grain size and evenness) and shape factors (size, shape, surface condition and cooling Agent, etc.) two categories. Therefore, the determination of hardenability, the best sample is standard, because the cooling of non-standard samples and standards are not the same. In this way, the result of the measurement can not be compared with the standard. But it’s impossible to make a standard