摘要：<p style="margin:0pt;"> <span style="font-family:宋體;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;">為什麼</span></span><span style="font-family:宋體;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;">不鏽鋼</span></span><span style="font-family:宋體;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;">激光切割</span></span><span style="font-family:宋體;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;">建議</span></span><span style="font-family:宋體;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;">用氮氣切？</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體;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;">激光切割機在切割鋼板或不鏽鋼等材料時(shí)，會(huì )用到鋪助氣體，比如使用氧氣作為鋪助氣體時(shí)，會(huì )產(chǎn)生放熱反應，在切割碳鋼時(shí)特彆明顯，這類(lèi)方案被廣泛認知。</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體;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;">在這一進(jìn)程中，氧氣用於金屬表麵的激光束投射點(diǎn)，使鋼板加熱，帶來(lái)放熱反應，使區域溫度到達熔點(diǎn)，融化的金屬被吹風(fēng)吹出去，與材料脫離，終究構成一個(gè)平滑，帶有氧化層的切割表麵。</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體;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;">但另外一方麵，切割不鏽鋼時(shí)，由於不鏽鋼有更高的熔點(diǎn)，其特性也不同，當切割質(zhì)量和光滑度都計入考核時(shí)，由於用氧化作鋪助氣體時(shí)會(huì )在金屬表麵構成殘留的氧化物，所以致使切割質(zhì)量度達不到較好的效果。</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體;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;">為了解決這個(gè)問(wèn)題，經(jīng)過(guò)激光專(zhuān)家反複研究，*後采取氮氣作為了鋪助氣體，由於氮氣是一個(gè)吸熱的進(jìn)程，本質(zhì)上是蒸發(fā)，消融的進(jìn)程，更高的壓力意味著(zhù)更高的運營(yíng)本錢(qián)。</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體;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;">噴嘴直徑對氣體消耗具有更大的影響，因此切割更厚的材料需要更大的噴嘴，所以切割不鏽鋼一般都采取氮氣作為輔助氣體。</span></span> </p>