雙相不銹鋼管
上游鋼(gang)(gang)坯價格(ge)(ge)(ge)在(zai)(zai)周末市場快(kuai)速(su)走低(di)(di)(di)以(yi)及(ji)寶鋼(gang)(gang)、沙(sha)鋼(gang)(gang)等(deng)鋼(gang)(gang)廠(chang)的(de)(de)(de)降價基調(diao)和期盤近來(lai)的(de)(de)(de)陰跌(die)壓制現貨繼(ji)續在(zai)(zai)今(jin)日陰跌(die)。其中雙(shuang)相(xiang)(xiang)不銹鋼(gang)(gang)管(guan)價格(ge)(ge)(ge)調(diao)幅(fu)較為明顯，各主要區域均(jun)現小幅(fu)走低(di)(di)(di)，板(ban)材市場跌(die)幅(fu)相(xiang)(xiang)對略小，熱軋(ya)卷板(ban)、中厚板(ban)市場僅敏感(gan)區域走低(di)(di)(di)。不過，受到(dao)國(guo)務院(yuan)發布資本市場新國(guo)九條的(de)(de)(de)利好提振，股(gu)市在(zai)(zai)今(jin)日大(da)幅(fu)崛起，“煤飛色舞”行情再現，股(gu)市的(de)(de)(de)大(da)幅(fu)走高(gao)也帶動(dong)了(le)雙(shuang)相(xiang)(xiang)不銹鋼(gang)(gang)管(guan)期貨和熱軋(ya)卷板(ban)期貨回升(sheng)，期螺放量收出“陽(yang)包陰”，顯示較短期內(nei)多空格(ge)(ge)(ge)局得到(dao)轉換，明日走強(qiang)的(de)(de)(de)預期較大(da)，而熱軋(ya)期貨也收出了(le)帶長下(xia)影線(xian)的(de)(de)(de)小陽(yang)線(xian)，短期內(nei)多頭(tou)勢頭(tou)也在(zai)(zai)增強(qiang)，也有回穩(wen)走強(qiang)的(de)(de)(de)預期，將對現貨鋼(gang)(gang)市信心(xin)形成一定的(de)(de)(de)鞏固，雙(shuang)相(xiang)(xiang)不銹鋼(gang)(gang)管(guan)的(de)(de)(de)陰跌(die)空間或不大(da)，明日跌(die)幅(fu)將縮小，重慶無縫鋼(gang)(gang)管(guan)廠(chang)部分或將維持走穩(wen)態(tai)勢。不過，能否就(jiu)此轉換市場格(ge)(ge)(ge)局，仍難定論。
雙(shuang)相(xiang)不(bu)(bu)(bu)(bu)銹鋼(gang)(gang)(gang)(gang)(gang)管(guan)知識擴(kuo)展： 雙(shuang)相(xiang)不(bu)(bu)(bu)(bu)銹鋼(gang)(gang)(gang)(gang)(gang)管(guan)冷成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)要(yao)(yao)求(qiu):由(you)于(yu)(yu)雙(shuang)相(xiang)不(bu)(bu)(bu)(bu)銹鋼(gang)(gang)(gang)(gang)(gang)管(guan)具有很高(gao)的(de)(de)(de)抗拉強(qiang)度(du)(du)(du)(du)(du)(du)(du)和(he)硬度(du)(du)(du)(du)(du)(du)(du)，其抵抗變(bian)(bian)形(xing)(xing)(xing)(xing)(xing)的(de)(de)(de)能(neng)(neng)(neng)力(li)(li)較高(gao)，在(zai)筒體(ti)(ti)(ti)、封頭冷成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)過程(cheng)(cheng)中(zhong)(zhong)需(xu)要(yao)(yao)的(de)(de)(de)彎曲作(zuo)用(yong)力(li)(li)就要(yao)(yao)大(da)(da)得(de)多；另外，冷塑性(xing)形(xing)(xing)(xing)(xing)(xing)變(bian)(bian)會(hui)(hui)惡(e)化雙(shuang)相(xiang)不(bu)(bu)(bu)(bu)銹鋼(gang)(gang)(gang)(gang)(gang)的(de)(de)(de)耐應(ying)(ying)(ying)力(li)(li)腐蝕(shi)性(xing)能(neng)(neng)(neng)，因(yin)(yin)(yin)(yin)(yin)此(ci)建(jian)議鋼(gang)(gang)(gang)(gang)(gang)板的(de)(de)(de)變(bian)(bian)形(xing)(xing)(xing)(xing)(xing)率(lv)超(chao)過１０％時(shi)，成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)后(hou)應(ying)(ying)(ying)對(dui)其進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)固(gu)(gu)溶(rong)處(chu)理(li)。鋼(gang)(gang)(gang)(gang)(gang)板變(bian)(bian)形(xing)(xing)(xing)(xing)(xing)率(lv)：ε＝１．５δ／２Ｒ（２）式中(zhong)(zhong) δ———鋼(gang)(gang)(gang)(gang)(gang)板的(de)(de)(de)名義厚度(du)(du)(du)(du)(du)(du)(du)，ｍｍ； Ｒ———鋼(gang)(gang)(gang)(gang)(gang)板彎曲變(bian)(bian)形(xing)(xing)(xing)(xing)(xing)后(hou)的(de)(de)(de)中(zhong)(zhong)性(xing)半徑，ｍｍ。固(gu)(gu)溶(rong)處(chu)理(li)后(hou)再進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)金(jin)(jin)相(xiang)檢驗(yan)，對(dui)于(yu)(yu)雙(shuang)相(xiang)不(bu)(bu)(bu)(bu)銹鋼(gang)(gang)(gang)(gang)(gang)管(guan)鐵(tie)(tie)素(su)(su)體(ti)(ti)(ti)含量５０％～５５％為最(zui)佳(jia)。雙(shuang)相(xiang)不(bu)(bu)(bu)(bu)銹鋼(gang)(gang)(gang)(gang)(gang)管(guan)強(qiang)度(du)(du)(du)(du)(du)(du)(du)高(gao)，表(biao)(biao)面應(ying)(ying)(ying)力(li)(li)大(da)(da)，成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)作(zuo)用(yong)力(li)(li)大(da)(da)，表(biao)(biao)面缺陷容易誘發開裂；因(yin)(yin)(yin)(yin)(yin)此(ci)材(cai)料表(biao)(biao)面應(ying)(ying)(ying)做表(biao)(biao)面檢測，并消(xiao)除表(biao)(biao)面缺陷。鐵(tie)(tie)素(su)(su)體(ti)(ti)(ti)相(xiang)會(hui)(hui)使工(gong)(gong)件冷成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)仍具有方向性(xing)，成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)后(hou)直(zhi)邊余量不(bu)(bu)(bu)(bu)等，建(jian)議下(xia)料尺寸應(ying)(ying)(ying)比不(bu)(bu)(bu)(bu)銹鋼(gang)(gang)(gang)(gang)(gang)略(lve)大(da)(da)。 熱(re)(re)(re)(re)(re)(re)(re)(re)成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)要(yao)(yao)求(qiu) 雙(shuang)相(xiang)不(bu)(bu)(bu)(bu)銹鋼(gang)(gang)(gang)(gang)(gang)管(guan)熱(re)(re)(re)(re)(re)(re)(re)(re)加(jia)工(gong)(gong)成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)過程(cheng)(cheng)中(zhong)(zhong)要(yao)(yao)控(kong)(kong)制好始壓(ya)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)(du)和(he)終壓(ya)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)(du)，為了避免產生(sheng)脆(cui)(cui)化現(xian)象(xiang)，如雙(shuang)相(xiang)不(bu)(bu)(bu)(bu)銹鋼(gang)(gang)(gang)(gang)(gang)管(guan)應(ying)(ying)(ying)在(zai)１２３０～１０２５℃范(fan)(fan)圍內(nei)進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)熱(re)(re)(re)(re)(re)(re)(re)(re)成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)操作(zuo)，熱(re)(re)(re)(re)(re)(re)(re)(re)成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)后(hou)立即(ji)進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)固(gu)(gu)溶(rong)處(chu)理(li)。如果(guo)熱(re)(re)(re)(re)(re)(re)(re)(re)成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)的(de)(de)(de)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)(du)太低(di)，變(bian)(bian)形(xing)(xing)(xing)(xing)(xing)就會(hui)(hui)聚集在(zai)較弱而且塑性(xing)較差的(de)(de)(de)鐵(tie)(tie)素(su)(su)體(ti)(ti)(ti)，結果(guo)造成(cheng)(cheng)(cheng)鐵(tie)(tie)素(su)(su)體(ti)(ti)(ti)在(zai)變(bian)(bian)形(xing)(xing)(xing)(xing)(xing)區(qu)(qu)的(de)(de)(de)嚴重(zhong)開裂。如果(guo)熱(re)(re)(re)(re)(re)(re)(re)(re)成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)的(de)(de)(de)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)(du)太高(gao)，則鐵(tie)(tie)素(su)(su)體(ti)(ti)(ti)變(bian)(bian)得(de)非常軟且可(ke)(ke)(ke)能(neng)(neng)(neng)發生(sheng)熱(re)(re)(re)(re)(re)(re)(re)(re)撕(si)裂。實(shi)際的(de)(de)(de)熱(re)(re)(re)(re)(re)(re)(re)(re)成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)應(ying)(ying)(ying)在(zai)給(gei)定的(de)(de)(de)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)(du)范(fan)(fan)圍進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)，因(yin)(yin)(yin)(yin)(yin)為鐵(tie)(tie)素(su)(su)體(ti)(ti)(ti)和(he)奧氏體(ti)(ti)(ti)都有良好的(de)(de)(de)熱(re)(re)(re)(re)(re)(re)(re)(re)塑性(xing)；因(yin)(yin)(yin)(yin)(yin)此(ci)熱(re)(re)(re)(re)(re)(re)(re)(re)成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)工(gong)(gong)藝中(zhong)(zhong)控(kong)(kong)制溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)(du)范(fan)(fan)圍及溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)(du)均(jun)勻是一(yi)個難(nan)點(dian)。 ２５０７不(bu)(bu)(bu)(bu)銹鋼(gang)(gang)(gang)(gang)(gang)熱(re)(re)(re)(re)(re)(re)(re)(re)成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)操作(zuo)中(zhong)(zhong)應(ying)(ying)(ying)注意(yi)以(yi)下(xia)幾點(dian)： （１）由(you)于(yu)(yu)雙(shuang)相(xiang)不(bu)(bu)(bu)(bu)銹鋼(gang)(gang)(gang)(gang)(gang)室溫(wen)(wen)(wen)(wen)(wen)強(qiang)度(du)(du)(du)(du)(du)(du)(du)高(gao)，扭曲變(bian)(bian)形(xing)(xing)(xing)(xing)(xing)的(de)(de)(de)產品再成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)或矯直(zhi)比奧氏體(ti)(ti)(ti)不(bu)(bu)(bu)(bu)銹鋼(gang)(gang)(gang)(gang)(gang)困(kun)難(nan)，因(yin)(yin)(yin)(yin)(yin)此(ci)在(zai)固(gu)(gu)溶(rong)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)(du)下(xia)，對(dui)薄壁(bi)、大(da)(da)口徑工(gong)(gong)件設置足夠的(de)(de)(de)支撐十分必要(yao)(yao)。 （２）４７５℃脆(cui)(cui)化區(qu)(qu)一(yi)般會(hui)(hui)在(zai)３５０～５２５℃溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)(du)范(fan)(fan)圍內(nei)出(chu)現(xian)，因(yin)(yin)(yin)(yin)(yin)此(ci)熱(re)(re)(re)(re)(re)(re)(re)(re)成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)操作(zuo)中(zhong)(zhong)嚴格禁止在(zai)此(ci)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)(du)范(fan)(fan)圍內(nei)作(zuo)業。 （３）坯(pi)料加(jia)熱(re)(re)(re)(re)(re)(re)(re)(re)出(chu)爐后(hou)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)(du)下(xia)降迅速，散熱(re)(re)(re)(re)(re)(re)(re)(re)快(kuai)，很快(kuai)可(ke)(ke)(ke)達脆(cui)(cui)化區(qu)(qu)；因(yin)(yin)(yin)(yin)(yin)此(ci)出(chu)爐至成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)時(shi)間應(ying)(ying)(ying)盡量縮短，封頭成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)后(hou)脫(tuo)模溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)(du)不(bu)(bu)(bu)(bu)應(ying)(ying)(ying)低(di)于(yu)(yu)９５０℃。熱(re)(re)(re)(re)(re)(re)(re)(re)成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)過程(cheng)(cheng)中(zhong)(zhong)建(jian)議對(dui)溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)(du)進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)嚴格監控(kong)(kong)。 （４）坯(pi)料在(zai)加(jia)熱(re)(re)(re)(re)(re)(re)(re)(re)過程(cheng)(cheng)中(zhong)(zhong)，當溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)(du)低(di)于(yu)(yu)６００℃時(shi)可(ke)(ke)(ke)以(yi)適(shi)當減(jian)小加(jia)熱(re)(re)(re)(re)(re)(re)(re)(re)速率(lv)，溫(wen)(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)(du)(du)升至８００℃左右(you)時(shi)加(jia)熱(re)(re)(re)(re)(re)(re)(re)(re)速率(lv)可(ke)(ke)(ke)以(yi)適(shi)當提高(gao)。 （５）由(you)于(yu)(yu)熱(re)(re)(re)(re)(re)(re)(re)(re)成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)會(hui)(hui)使材(cai)料金(jin)(jin)相(xiang)失去(qu)相(xiang)平(ping)衡(heng)，進(jin)(jin)(jin)(jin)而影響材(cai)料的(de)(de)(de)力(li)(li)學性(xing)能(neng)(neng)(neng)和(he)耐腐蝕(shi)性(xing)能(neng)(neng)(neng)。熱(re)(re)(re)(re)(re)(re)(re)(re)成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)后(hou)應(ying)(ying)(ying)立即(ji)進(jin)(jin)(jin)(jin)行(xing)(xing)(xing)固(gu)(gu)溶(rong)熱(re)(re)(re)(re)(re)(re)(re)(re)處(chu)理(li)。
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鄭重(zhong)承諾，在同(tong)等(deng)的(de)質量下，保(bao)證以最(zui)低的(de)價格，最(zui)完善的(de)服務(wu)，最(zui)高的(de)信譽來答謝各界朋友(you)的(de)支持(chi)與厚愛(ai)。歡迎(ying)垂詢光(guang)臨！
雙相不銹鋼管優惠價多少