【摘 要】
：
在金相检验工作中,钢材脱碳层深度的测定属于一般性检验工作,但有时也会碰到一些困难,如我们在测定冷拉钢丝的脱碳层深度时,就很难确定。被检钢丝为直径2.5毫米的65Si_2MnWA
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在金相检验工作中,钢材脱碳层深度的测定属于一般性检验工作,但有时也会碰到一些困难,如我们在测定冷拉钢丝的脱碳层深度时,就很难确定。被检钢丝为直径2.5毫米的65Si_2MnWA冷拉钢丝,其显微组织为粒状珠光体(图1)。在这种情况下,很难正确测定脱碳层的真实深度。为此,我们做了一些试验。将试样镀铜后进行退火处理。镀铜前,截取试样
In the metallographic examination work, the determination of the depth of steel decarburized layer belongs to the general inspection work, but sometimes also encounter some difficulties, such as when we determine the depth of decarburization of cold-drawn steel wire, it is difficult to determine. The seized steel wire is a 65Si2MnWA cold-drawn steel wire with a diameter of 2.5 mm, and the microstructure is granular pearlite (FIG. 1). In this case, it is difficult to correctly determine the true depth of the decarburized layer. To this end, we have done some experiments. The sample is annealed after copper plating. Before copper plating, intercept the sample
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