為(wèi)什么不锈钢激光切割建议用(yòng)氮气切？

摘要：<p style="margin:0pt;"> <span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋體(tǐ);">為(wèi)什么</span></span><span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋體(tǐ);">不锈钢</span></span><span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋體(tǐ);">激光切割</span></span><span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋體(tǐ);">建议</span></span><span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋體(tǐ);">用(yòng)氮气切？</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋體(tǐ);">激光切割机在切割钢板或不锈钢等材料时，会用(yòng)到铺助气體(tǐ)，比如使用(yòng)氧气作為(wèi)铺助气體(tǐ)时，会产生放热反应，在切割碳钢时特别明显，这类方案被广泛认知。</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋體(tǐ);">在这一进程中，氧气用(yòng)于金属表面的激光束投射点，使钢板加热，带来放热反应，使區(qū)域温度到达熔点，融化的金属被吹风吹出去，与材料脱离，终究构成一个平滑，带有(yǒu)氧化层的切割表面。</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋體(tǐ);">但另外一方面，切割不锈钢时，由于不锈钢有(yǒu)更高的熔点，其特性也不同，当切割质量和光滑度都计入考核时，由于用(yòng)氧化作铺助气體(tǐ)时会在金属表面构成残留的氧化物(wù)，所以致使切割质量度达不到较好的效果。</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋體(tǐ);">為(wèi)了解决这个问题，经过激光专家反复研究，*后采取氮气作為(wèi)了铺助气體(tǐ)，由于氮气是一个吸热的进程，本质上是蒸发，消融的进程，更高的压力意味着更高的运营本钱。</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體(tǐ);font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋體(tǐ);">喷嘴直径对气體(tǐ)消耗具有(yǒu)更大的影响，因此切割更厚的材料需要更大的喷嘴，所以切割不锈钢一般都采取氮气作為(wèi)辅助气體(tǐ)。</span></span> </p>