不鏽鋼加工特點及要點

摘要：<span style="font-family:宋體;">不鏽鋼加工特點及要點</span> <p> <span style="font-family:宋體;">西安華達不鏽鋼有限公司是知名的不鏽鋼加工廠家</span><span>,</span><span style="font-family:宋體;">並且在生產不鏽鋼的領域有著較高的聲譽和信譽</span><span>,</span><span style="font-family:宋體;">產品質量高</span><span>,</span><span style="font-family:宋體;">價格合理</span><span>,</span><span style="font-family:宋體;">廣受顧客朋友的好評</span><span>.</span><span style="font-family:宋體;">下麵介紹一下不鏽鋼加工特點及要點：</span> </p> <p> <span style="font-family:宋體;">1、</span><span style="font-family:宋體;">加工硬化嚴重</span><span>:</span><span style="font-family:宋體;">在不鏽鋼中</span><span>,</span><span style="font-family:宋體;">以奧氏體和雙相</span><span>(</span><span style="font-family:宋體;">奧氏體</span><span>+</span><span style="font-family:宋體;">鐵素體</span><span>)</span><span style="font-family:宋體;">不鏽鋼的加工硬化現象*為突出</span><span>.</span><span style="font-family:宋體;">因為不鏽鋼的塑性大</span><span>,</span><span style="font-family:宋體;">塑性變形時晶格歪扭</span><span>,</span><span style="font-family:宋體;">強化係數很大</span><span>;</span><span style="font-family:宋體;">且奧氏體不夠穩定</span><span>,</span><span style="font-family:宋體;">在切削應力的作用下</span><span>,</span><span style="font-family:宋體;">部分奧氏體會轉變為馬氏體</span><span>;</span><span style="font-family:宋體;">再加上化合物雜質在切削熱的作用下</span><span>,</span><span style="font-family:宋體;">易於分解呈彌散分布</span><span>,</span><span style="font-family:宋體;">使切削加工時產生硬化層</span><span>.</span> </p> <p> <span style="font-family:宋體;">2、</span><span style="font-family:宋體;">切削力大</span><span>:</span><span style="font-family:宋體;">不鏽鋼在切削過程中塑性變形大</span><span>,</span><span style="font-family:宋體;">尤其是奧氏體不鏽鋼</span><span>(</span><span style="font-family:宋體;">其伸長率超過</span><span>45</span><span style="font-family:宋體;">號鋼的</span><span>1.5</span><span style="font-family:宋體;">倍以上</span><span>),</span><span style="font-family:宋體;">使切削力增加</span><span>.<span style="font-family:宋體;">不鏽鋼加工特點及要點，</span></span><span style="font-family:宋體;">同時</span><span>,</span><span style="font-family:宋體;">不鏽鋼的加工硬化嚴重</span><span>,</span><span style="font-family:宋體;">熱強度高</span><span>,</span><span style="font-family:宋體;">進一步增大了切削抗力</span><span>,</span><span style="font-family:宋體;">切屑的卷曲折斷也比較困難</span><span>.</span> </p> <p> <span style="font-family:宋體;">3、</span><span style="font-family:宋體;">切削溫度高</span><span>:</span><span style="font-family:宋體;">切削時塑性變形及與刀具間的摩擦都很大</span><span>,</span><span style="font-family:宋體;">產生的切削熱多</span><span>;</span><span style="font-family:宋體;">大量切削熱都集中在切削區和刀削接觸的界麵上</span><span>,</span><span style="font-family:宋體;">散熱條件差</span><span>.<span style="font-family:宋體;">不鏽鋼加工特點及要點，</span></span><span style="font-family:宋體;">在相同的條件下切削溫度比</span><span>45</span><span style="font-family:宋體;">號鋼高</span><span>200</span><span style="font-family:宋體;">℃</span><span style="font-family:宋體;">左右</span><span>.</span> </p> <p> <span style="font-family:宋體;">4、</span><span style="font-family:宋體;">切削不易折斷、易粘結</span><span>:</span><span style="font-family:宋體;">不鏽鋼的塑性、韌性都很大</span><span>,</span><span style="font-family:宋體;">在高溫、高壓下</span><span>,</span><span style="font-family:宋體;">不鏽鋼與其他金屬的親和性強</span><span>,</span><span style="font-family:宋體;">易產生粘附現象</span><span>,<span style="font-family:宋體;">不鏽鋼加工特點及要點，</span></span><span style="font-family:宋體;">並形成積削瘤</span><span>,</span><span style="font-family:宋體;">既加劇刀具磨損</span><span>,</span><span style="font-family:宋體;">又會出現撕扯現象而使已加工表麵惡化</span><span>.</span><span style="font-family:宋體;">含碳量較低的馬氏體不鏽鋼的這一特點更為明顯</span><span>.</span> </p> <p> <span style="font-family:宋體;">5、</span><span style="font-family:宋體;">刀具易磨損</span><span>:</span><span style="font-family:宋體;">切削不鏽鋼過程中的親和作用</span><span>,</span><span style="font-family:宋體;">使刀削間產生粘結、擴散</span><span>,</span><span style="font-family:宋體;">從而使刀具產生粘結磨損、擴散磨損</span><span>,</span><span style="font-family:宋體;">致使刀具前刀麵產生月牙窪</span><span>,</span><span style="font-family:宋體;">切削刃還會形成微小的剝落和缺口</span><span>;</span><span style="font-family:宋體;">加上不鏽鋼中的碳化物</span><span>(</span><span style="font-family:宋體;">如</span><span>TiC)</span><span style="font-family:宋體;">微粒硬度很高</span><span>,</span><span style="font-family:宋體;">切削時直接與刀具接觸、摩擦</span><span>,</span><span style="font-family:宋體;">擦傷刀具</span><span>,</span><span style="font-family:宋體;">還有加工硬化現象</span><span>,</span><span style="font-family:宋體;">均會使刀具磨損加劇</span><span>.</span> </p> <p> <span style="font-family:宋體;">　</span> </p>