摘要：<span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <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;">西安不銹鋼管道拆除及施工方案</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <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;">西安不銹鋼管道拆除施工方案</span></span><span lang="EN-US"><br /> <span style="font-family:'Times New Roman';font-size:small;"> 1</span></span><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></span><span style="font-family:'Times New Roman';font-size:small;"> </span><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;;">不銹鋼管道舊管線的拆除，采用等離子切割機(jī)先將管道割斷，然后由人工將管道拆除，若口徑大于</span><span style="font-family:'Times New Roman';"><span lang="EN-US">DN200</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">的管道，可采用手拉葫蘆協(xié)助吊卸。</span></span><span lang="EN-US"><br /> <span style="font-family:'Times New Roman';font-size:small;"> 2</span></span><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></span><span style="font-family:'Times New Roman';font-size:small;"> </span><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;">拆卸下的管道，應(yīng)及時將其清理出場，否則，新管道將無場地進(jìn)行預(yù)制工作。</span></span><span lang="EN-US"><br /> <span style="font-family:'Times New Roman';font-size:small;"> 3</span></span><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></span><span style="font-family:'Times New Roman';font-size:small;"> </span><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;">新管道預(yù)制時，將管道在地面按原管線走向一字排開，預(yù)制時，應(yīng)根據(jù)現(xiàn)場實際情況定位。</span></span><span lang="EN-US"><br /> <span style="font-family:'Times New Roman';font-size:small;"> 4</span></span><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></span><span style="font-family:'Times New Roman';font-size:small;"> </span><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;">供安裝的不銹鋼管及管件應(yīng)具有制造廠的合格證書，化學(xué)成分和機(jī)械性能等資料，并經(jīng)熱處理和晶間腐蝕實驗。管子及管件在使用前進(jìn)行外觀檢查，表面不得有裂縫、重皮等缺陷。</span></span><span lang="EN-US"><br /> <span style="font-family:'Times New Roman';font-size:small;"> 5</span></span><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></span><span style="font-family:'Times New Roman';font-size:small;"> </span><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;">管子安裝前應(yīng)進(jìn)行一般清洗，除去油污及其他污物。</span></span><span lang="EN-US"><br /> <span style="font-family:'Times New Roman';font-size:small;"> 6</span></span><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></span><span style="font-family:'Times New Roman';font-size:small;"> </span><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;;">不銹鋼管嚴(yán)禁使用氧</span><span style="font-family:'Times New Roman';"><span lang="EN-US">-</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">乙炔割刀，應(yīng)采用鋸床、手鋸、砂輪切割機(jī)、等離子切割機(jī)等進(jìn)行管道切割，砂輪片應(yīng)選用專用砂輪片。</span></span><span lang="EN-US"><br /> <span style="font-family:'Times New Roman';font-size:small;"> 7</span></span><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 style="font-family:'Times New Roman';"><span lang="EN-US"> 18-8</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">不銹鋼管采用焊接連接，配件采用壓制件，由于</span><span style="font-family:'Times New Roman';"><span lang="EN-US">18-8</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">不銹鋼為奧氏體不銹鋼，采用的焊接方式為手工氬弧焊。選用的焊條及焊絲規(guī)格為：焊條牌號</span><span style="font-family:'Times New Roman';"><span lang="EN-US">A132</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">，焊絲鋼號</span></span><span style="font-family:'Times New Roman';"><span lang="EN-US"><span style="font-size:small;">H0Cr20Ni10Ti<br /> </span><span style="font-size:small;"> 8</span></span></span><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></span><span style="font-family:'Times New Roman';font-size:small;"> </span><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;">管道應(yīng)在支架固定好后安裝，管子不得與碳鋼支架直接接觸，應(yīng)在管道與支架之間墊入不銹鋼片、不含氯離子的塑料片和橡膠板。</span></span><span lang="EN-US"><br /> <span style="font-family:'Times New Roman';font-size:small;"> 9</span></span><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></span><span style="font-family:'Times New Roman';font-size:small;"> </span><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;;">根據(jù)輸送介質(zhì)和工作溫度的不同，法蘭墊片應(yīng)按規(guī)范要求選用非金屬墊片或金屬墊片，非金屬墊片的氯離子含量不得超過</span><span style="font-family:'Times New Roman';"><span lang="EN-US">50*10-6</span></span><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><span lang="EN-US"><br /> <span style="font-family:'Times New Roman';font-size:small;"> 10</span></span><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></span><span style="font-family:'Times New Roman';font-size:small;"> </span><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;">不銹鋼管道管路較長或輸送介質(zhì)溫度較高時，管路上應(yīng)設(shè)補(bǔ)償器。</span></span><span lang="EN-US"><br /> <span style="font-family:'Times New Roman';font-size:small;"> 11</span></span><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></span><span style="font-family:'Times New Roman';font-size:small;"> </span><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;;">管道安裝完畢后，應(yīng)按設(shè)計或規(guī)范要求進(jìn)行試壓，采取水壓試驗時水的氯離子含量不得超過</span><span style="font-family:'Times New Roman';"><span lang="EN-US">25*10-6</span></span><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 style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span lang="EN-US"><span style="font-family:'Times New Roman';font-size:small;">&nbsp;</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <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;">西安不銹鋼管施工方案</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">1</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、不銹鋼管子坡口可采用車床、電動坡口機(jī)、手動坡口機(jī)、角向砂輪機(jī)。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">2</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、不銹鋼彎頭、三通等宜采用制成品，現(xiàn)場加工時，應(yīng)采用冷態(tài)加工工藝制成。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">3</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、不銹鋼管子的焊接可采用氬弧焊、手工電焊或采用氬弧焊打底，手工電弧焊蓋面，管內(nèi)充氬保護(hù)的焊接工藝。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">4</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、不銹鋼管焊接前。應(yīng)將坡口上的毛刺等用銼刀或砂紙**干凈，并用丙酮清洗坡口。采用手工電弧焊時，為防止焊接時的飛濺物落在管子上，焊接前應(yīng)在距焊口</span><span style="font-family:'Times New Roman';"><span lang="EN-US">4</span></span><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 style="font-family:'Times New Roman';"><span lang="EN-US">5mm</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">以外、</span><span style="font-family:'Times New Roman';"><span lang="EN-US">100mm</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">以內(nèi)涂上適當(dāng)稠度的石灰漿，待石灰漿干后開始焊接。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">5</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、不銹鋼管采用氬弧焊時，環(huán)境溫度應(yīng)不低于</span><span style="font-family:'Times New Roman';"><span lang="EN-US">-5</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">℃，溫度過低，應(yīng)采取預(yù)熱措施。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">6</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、不銹鋼管焊接時，管子應(yīng)擱置在帶滾輪的托架上，以方便焊接。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">7</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、不銹鋼管道在電焊焊接完成后，應(yīng)及時**焊縫表面熔渣及飛濺物，待無損探傷或檢驗合格后，應(yīng)根據(jù)設(shè)計要求及時對焊縫表面及周圍進(jìn)行酸洗、鈍化處理。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">8</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、不銹鋼主管上接支管時，如需在管子上開孔接支管，應(yīng)按下列規(guī)定執(zhí)行：</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <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;;">在主管上劃出與支管內(nèi)徑一致的圓圈線，并打好中心孔，用轉(zhuǎn)頭或銑刀預(yù)先在轉(zhuǎn)床上加工出來；如采用電弧焊碳鋼焊條切割，應(yīng)在割口邊緣削去</span><span style="font-family:'Times New Roman';"><span lang="EN-US">7</span></span><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 style="font-family:'Times New Roman';"><span lang="EN-US">8mm</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">；如用不銹鋼焊條切割，可只磨削光滑即可；等離子法切割的孔，應(yīng)用角向砂輪機(jī)將孔周圍磨掉</span><span style="font-family:'Times New Roman';"><span lang="EN-US">2</span></span><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 style="font-family:'Times New Roman';"><span lang="EN-US">3mm</span></span><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 style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <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;">必須清洗開孔時掉入管內(nèi)的切屑和熔渣；嚴(yán)禁用氣焊切割開孔。不銹鋼管部件如需熱加工，應(yīng)編制嚴(yán)格的加熱工藝，熱加工過程必須有溫度檢測儀表控制。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span style="font-size:small;"><span style="font-family:'Times New Roman';"><span lang="EN-US">9</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">、不銹鋼管的法蘭焊接方法與碳鋼管相同，當(dāng)設(shè)計允許將碳鋼法蘭、管件焊接在不銹鋼管上時，必須采用鉻鎳含量高的不銹鋼焊條，如</span><span style="font-family:'Times New Roman';"><span lang="EN-US">A302</span></span><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 style="font-family:'Times New Roman';"><span lang="EN-US">A307</span></span><span style="font-family:宋體;mso-ascii-font-family:&quot;Times New Roman&quot;;mso-hansi-font-family:&quot;Times New Roman&quot;;">，以減少炭鋼對不銹鋼合金成分的燒損。</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <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;">公司至成立以來，以“誠信、合作、雙贏、發(fā)展”為經(jīng)營宗旨，堅持“價格**、用戶、信譽(yù)”的營銷理念，在市場上獲得了良好的口碑。</span></span><span lang="EN-US"><br /> <span style="font-family:'Times New Roman';font-size:small;"> </span></span><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 style="font-family:'Times New Roman';"><span lang="EN-US">&nbsp;&nbsp; </span></span><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 style="font-family:'Times New Roman';"><span lang="EN-US">029</span></span><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><span style="font-family:'Times New Roman';"><span lang="EN-US"><span style="font-size:small;">88633755<br /> </span><span style="font-size:small;"> </span></span></span><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;;">詳情參考：</span><span lang="EN-US"><a href="http://www.yeyeyule.cn" target="_blank"><span style="color:#444444;font-family:'Times New Roman';">http://www.yeyeyule.cn</span></a></span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span lang="EN-US"><span style="font-family:'Times New Roman';font-size:small;">&nbsp;</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span> <p style="margin:0cm 0cm 0pt;"> <span lang="EN-US"><span style="font-family:'Times New Roman';font-size:small;">&nbsp;</span></span> </p> <span style="font-family:宋體;font-size:small;"> </span>