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直读光谱仪测定钢材中的超低碳
<p style="margin: 0pt; line-height: 1.75em;"><span style="color: rgb(0, 0, 0);"><span style="line-height: 150%; font-family: Calibri; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;"><span style="font-family: 宋体;">超低碳钢作为一种金属材料在电力及家电等行业中广泛应用</span>,&nbsp; <span style="font-family: 宋体;">各钢铁企业纷纷将其列为重要产品类目之中,超低碳钢的生产水平是一个企业冶炼水平的重要体现。作为钢中的重要合金元素之一</span></span><span style="line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri;">,</span><span style="line-height: 150%; font-family: Calibri; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;"><span style="font-family: 宋体;">碳含量的大小对于钢的性能有着直接的影响。因此</span>, <span style="font-family: 宋体;">对于超低碳钢中碳含量的测定就显得十分重要,下面小编将和大家讨论一下直读光谱仪在分析碳钢中超低碳含量时的应用。</span></span></span></p><p style="margin: 0pt; text-align: center; line-height: 1.75em;"><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri;">&nbsp;<img title="1622770986824865.png" alt="图片1.png" src="/uploads/image/20210604/1622770986824865.png"/></span></p><p style="margin: 0pt; line-height: 1.75em;"><span style="color: rgb(0, 0, 0);"><strong><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; font-weight: bold; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">一、试验部分</span></strong></span></p><p style="margin: 0pt; line-height: 1.75em;"><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: Calibri; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">1<span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">、仪器设备</span></span></p><p style="margin: 0pt; line-height: 1.75em;"><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: Calibri; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;"><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">光谱仪应用的是</span>JB-750<span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">光电直读光谱仪</span></span></p><p style="margin: 0pt; line-height: 1.75em;"><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: Calibri; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">2<span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">、设备工作条件</span></span></p><p style="margin: 0pt; line-height: 1.75em;"><span style="color: rgb(0, 0, 0);"><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">实验过程中</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri;">,</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: Calibri; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;"><span style="color: rgb(0, 0, 0); font-family: 宋体;">实验环境的温度保持在</span>19℃<span style="color: rgb(0, 0, 0); font-family: 宋体;">~</span><span style="color: rgb(0, 0, 0); font-family: Calibri;">25℃</span><span style="color: rgb(0, 0, 0); font-family: 宋体;">之间</span></span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri;">,</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: Calibri; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;"><span style="color: rgb(0, 0, 0); font-family: 宋体;">湿度保持在</span>30%<span style="color: rgb(0, 0, 0); font-family: 宋体;">~</span><span style="color: rgb(0, 0, 0); font-family: Calibri;">50%</span><span style="color: rgb(0, 0, 0); font-family: 宋体;">的范围内</span></span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri;">,</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: Calibri; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;"><span style="color: rgb(0, 0, 0); font-family: 宋体;">选用氩气作为实验气体,光谱波段为</span>120nm<span style="color: rgb(0, 0, 0); font-family: 宋体;">~</span><span style="color: rgb(0, 0, 0); font-family: Calibri;">800nm</span><span style="color: rgb(0, 0, 0); font-family: 宋体;">。</span></span></span></p><p style="margin: 0pt; line-height: 1.75em;"><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: Calibri; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">3<span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">、试验方法</span></span></p><p style="margin: 0pt; line-height: 1.75em;"><span style="color: rgb(0, 0, 0);"><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">样品采用磨样机或砂轮机打磨</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri;">,</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: Calibri; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;"><span style="color: rgb(0, 0, 0); font-family: 宋体;">标准物质和样品按</span>GB/T4336<span style="color: rgb(0, 0, 0); font-family: 宋体;">进行预处理</span><span style="color: rgb(0, 0, 0); font-family: Calibri;">, </span><span style="color: rgb(0, 0, 0); font-family: 宋体;">扫描,修正谱线漂移;在设备自检通过时</span></span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri;">,</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: Calibri; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;"><span style="color: rgb(0, 0, 0); font-family: 宋体;">合理选取分析程序</span>, <span style="color: rgb(0, 0, 0); font-family: 宋体;">确保物质的局部得以标准化</span></span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri;">,</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">然后校正待测样品</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri;">,</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">获得校正系数。然后对待测样品展开实验检测</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri;">,</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">并详细记录实验数据。</span></span></p><p style="margin: 0pt; line-height: 1.75em;"><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: Calibri; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">&nbsp;</span></p><p style="margin: 0pt; line-height: 1.75em;"><span style="color: rgb(0, 0, 0);"><strong><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; font-weight: bold; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">二、结果和讨论</span></strong></span></p><p style="margin: 0pt; line-height: 1.75em;"><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: Calibri; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">1<span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">、样品制备方式对结果的影响</span></span></p><p style="margin: 0pt; line-height: 1.75em;"><span style="color: rgb(0, 0, 0);"><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">直读光谱仪分析时</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri;">,</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">样品制备的好坏直接影响分析结果的精度和准确度</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri;">,</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">特别是在分析超低碳钢时所产生的影响更加明显。在低碳程序下处理的样品</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri;">,</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">样品的表面平整</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri;">,</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">没有夹渣、裂痕及氧化皮等情况,并确保样品不受污染或者变质影响。</span></span></p><p style="margin: 0pt; line-height: 1.75em;"><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: Calibri; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">2<span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">、氩气纯度对结果的影晌</span></span></p><p style="margin: 0pt; line-height: 1.75em;"><span style="color: rgb(0, 0, 0);"><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">作为直读光谱仪的分析条件</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri;">,</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">氩气的纯度在很大程度上影响到检测结果的准确性和精准度</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri;">,</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: Calibri; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;"><span style="color: rgb(0, 0, 0); font-family: 宋体;">直读光谱仪所使用的氩气纯度要求为</span>99.999%, <span style="color: rgb(0, 0, 0); font-family: 宋体;">准度不够的氩气会增加激发过程的不确定性</span></span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri;">,</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">譬如跳闸或者激发光源不激发等情况</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri;">,</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">从而导致分析数据不准确。</span></span></p><p style="margin: 0pt; line-height: 1.75em;"><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: Calibri; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">3<span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">、检测精密度的分析</span></span></p><p style="margin: 0pt; line-height: 1.75em;"><span style="color: rgb(0, 0, 0);"><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: Calibri; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;"><span style="color: rgb(0, 0, 0); font-family: 宋体;">对于检测的精密度的校正</span>, <span style="color: rgb(0, 0, 0); font-family: 宋体;">可以合理运用平均偏差、标准偏差、方差等一系列数据的平均值来和测定值进行比对研判。由于在实验过程中</span></span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri;">,</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: Calibri; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;"><span style="color: rgb(0, 0, 0); font-family: 宋体;">仪器设备的稳定性</span>, <span style="color: rgb(0, 0, 0); font-family: 宋体;">实验样品的均匀程度等均会对最终的精密度检测结果产生影响</span></span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri;">,</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: Calibri; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;"><span style="color: rgb(0, 0, 0); font-family: 宋体;">因此务必要开展精密度度量作业。一般至少需要测试</span>30<span style="color: rgb(0, 0, 0); font-family: 宋体;">次以上。然后优选均匀性较好的样品来开展精密度试验</span></span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri;">,</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: Calibri; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;"><span style="color: rgb(0, 0, 0); font-family: 宋体;">并在相同条件下分别测试</span>10<span style="color: rgb(0, 0, 0); font-family: 宋体;">次。</span></span></span></p><p style="margin: 0pt; line-height: 1.75em;"><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: Calibri; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">&nbsp;</span></p><p style="margin: 0pt; line-height: 1.75em;"><span style="color: rgb(0, 0, 0);"><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">总结:样品制作工程中,样品表面不能过高</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri;">,</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">防止被氧化</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri;">,</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">确保分析结果的准确度与精确度;在光谱仪进行分析时</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri;">,</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: Calibri; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;"><span style="color: rgb(0, 0, 0); font-family: 宋体;">氩气的纯度要求</span>99.999%<span style="color: rgb(0, 0, 0); font-family: 宋体;">,直读光谱仪可以快速准确的对超低碳钢中的碳含量进行测定</span></span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri;">,</span><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: 宋体; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">可以满足生产要求。</span></span></p><p style="margin: 0pt; line-height: 1.75em;"><span style="color: rgb(0, 0, 0); line-height: 150%; font-family: Calibri; font-size: 11pt; mso-spacerun: &quot;yes&quot;; mso-fareast-font-family: 宋体; mso-bidi-font-family: &quot;Times New Roman&quot;; mso-font-kerning: 1.0000pt;">&nbsp;</span></p><p></p>
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