摘要：<span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;"><span style="font-size:small;"><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;"><span> </span> <p> <span><span style="color:#333333;font-family:宋體;">西安不銹鋼管道坡口加工</span></span> </p> <p> <span><span style="color:#333333;font-family:宋體;">西安不銹鋼管道打坡口是主要為了焊接工件，保證焊接度</span><span style="color:#333333;font-family:Arial;">,</span><span style="color:#333333;font-family:宋體;">普通情況下用機加工方法加工出的型面，要求不高時也可以氣割（如果是一類焊縫，需超聲波探傷的，則只能用機加工方法），但需**氧化渣，根據(jù)需要，有</span><span style="color:#333333;font-family:Arial;">X</span><span style="color:#333333;font-family:宋體;">型坡口，有</span><span style="color:#333333;font-family:Arial;">U</span><span style="color:#333333;font-family:宋體;">型坡口等，但大多要求保留一定的鈍邊。</span></span> </p> <p> <span><span style="color:#333333;font-family:宋體;">西安不銹鋼管道坡口加工常用的辦法有：</span><span style="font-family:宋體;">風鏟加工，機械加工，氣割坡口，碳弧氣刨坡口。</span></span> </p> <span> </span> <p> <span style="font-family:宋體;"><span>根據(jù)設(shè)計或工藝的需要將焊件待焊部位加工成一定幾何形狀的溝槽稱為焊接坡口。</span></span><span><br /> </span><span style="font-family:宋體;"><span>西安不銹鋼管道坡口加工的目的是為了得到在焊件厚度上全部焊透的焊縫。</span></span> </p> <span> </span> <p> <span><span style="font-family:宋體;">根據(jù)設(shè)計或工藝需要，在焊件的待焊部位加工并裝配成的一定幾何形狀的溝槽，就叫坡口。坡口是主要為了焊接工件，保證焊接度</span><span><span>,</span></span><span style="font-family:宋體;">普通情況下用機加工方法加工出的型面，要求不高時也可以氣割（如果是一類焊縫，需超聲波探傷的，則只能用機加工方法），但需**氧化渣，根據(jù)需要，有</span><span><span>K</span></span><span style="font-family:宋體;">型坡口，</span><span><span>V</span></span><span style="font-family:宋體;">型坡口，</span><span><span>U</span></span><span style="font-family:宋體;">型坡口等，但大多要求保留一定的鈍邊．</span></span><span> </span><span><span style="font-family:宋體;">兩平板對接，一面開坡口時，板材的厚度在</span><span><span>3~6mm</span></span><span style="font-family:宋體;">，坡口的角度為</span><span><span>70°</span></span><span style="font-family:宋體;">；板材的厚度在</span><span><span>7~10mm</span></span><span style="font-family:宋體;">及</span><span><span>12~26mm</span></span><span style="font-family:宋體;">的偶數(shù)時，坡口的角度為</span><span><span>60°</span></span><span style="font-family:宋體;">；如果底面要貼一塊板時，坡口的角度為</span><span><span>50°</span></span><span style="font-family:宋體;">；如果是兩面開坡口時，坡口的角度為</span><span><span>60°</span></span><span style="font-family:宋體;">；直角焊接時，一側(cè)開坡口時，板材厚度在</span><span><span>4~6mm</span></span><span style="font-family:宋體;">時，坡口角度為</span><span><span>55°</span></span><span style="font-family:宋體;">；板材厚度大于</span><span><span>7~30mm</span></span><span style="font-family:宋體;">及直角焊接，兩側(cè)開坡口時，坡口的角度為</span><span><span>60°</span></span><span style="font-family:宋體;">。</span></span><span> </span><span><span style="font-family:宋體;">焊接坡口還與焊接工藝有關(guān)系，使用自動焊機一般</span><span><span>10</span></span><span style="font-family:宋體;">毫米以下的鋼板不開坡口，使用手工焊</span><span><span>3</span></span><span style="font-family:宋體;">毫米以上就需開坡口。坡口形式按板厚排序為直邊、</span><span><span>V</span></span><span style="font-family:宋體;">、</span><span><span>X</span></span><span style="font-family:宋體;">、單</span><span><span>U</span></span><span style="font-family:宋體;">和雙</span><span><span>U</span></span><span style="font-family:宋體;">等。</span></span><span> </span><span style="font-family:宋體;"><span> 欲知詳細的數(shù)據(jù)，可以查閱有關(guān)焊接的手冊。</span></span><span> </span><span><span style="font-family:宋體;">一般可根據(jù)這個確定《</span><span><span>GB.T985.1-2008_(</span></span><span style="font-family:宋體;">氣焊、焊條電弧焊、氣體保護焊和高能束焊的推薦坡口</span><span><span>)</span></span><span style="font-family:宋體;">》</span></span> </p> <span> </span> <p> <span style="font-family:宋體;"><span>主要是看甲方的焊接工藝圖</span></span><span> </span><span style="font-family:宋體;"><span>上面標記有打坡口的一般都要打！</span></span><span><br /> <span> </span></span><span><span style="font-family:宋體;">如果是承壓管道，例如蒸汽管道或者高壓油管或者水管管壁厚度大于</span><span><span>5</span></span><span style="font-family:宋體;">毫米的都應該打坡口</span></span><span><br /> <span> </span></span><span style="font-family:宋體;"><span>非承壓管道，例如電線套管等</span></span><span> </span><span style="font-family:宋體;"><span>薄的就直接對焊，厚的掉縫就可以了</span></span><span> </span><span style="font-family:宋體;"><span>焊透就行！</span></span> </p> <span> </span></span> <p style="margin:0cm 0cm 0pt;"> <br /> </p> </span> <p style="margin:0cm 0cm 0pt;"> <br /> </p> </span> <p style="margin:0cm 0cm 0pt;"> <br /> </p> <span style="font-family:宋體;font-size:small;"> </span>