切不銹鋼管
本(ben)周切不銹(xiu)(xiu)鋼(gang)(gang)(gang)(gang)管(guan)價格(ge)(ge)主穩個漲(zhang)(zhang)(zhang)，其中(zhong)(zhong)切不銹(xiu)(xiu)鋼(gang)(gang)(gang)(gang)管(guan)鋼(gang)(gang)(gang)(gang)廠上漲(zhang)(zhang)(zhang)100元/噸左(zuo)右(you)，哈爾濱地區切不銹(xiu)(xiu)鋼(gang)(gang)(gang)(gang)管(guan)價格(ge)(ge)也維(wei)持穩中(zhong)(zhong)上漲(zhang)(zhang)(zhang)趨(qu)勢，鋼(gang)(gang)(gang)(gang)廠到貨(huo)偏低，庫(ku)存仍處(chu)低位，以漲(zhang)(zhang)(zhang)價吸貨(huo)為主；市(shi)場方面，貿易商(shang)表(biao)示近期收貨(huo)轉好，主要還是(shi)因為價格(ge)(ge)合適。綜合來看，本(ben)周切不銹(xiu)(xiu)鋼(gang)(gang)(gang)(gang)管(guan)價格(ge)(ge)走勢強勁，期鋼(gang)(gang)(gang)(gang)表(biao)現突出，但(dan)由于終端需求(qiu)難釋放，成品材走勢仍趨(qu)于弱勢，預(yu)計下周切不銹(xiu)(xiu)鋼(gang)(gang)(gang)(gang)管(guan)市(shi)場以穩中(zhong)(zhong)向好運行為主。
切(qie)(qie)不(bu)(bu)(bu)(bu)(bu)銹(xiu)鋼(gang)(gang)(gang)管(guan)知識擴展： 切(qie)(qie)不(bu)(bu)(bu)(bu)(bu)銹(xiu)鋼(gang)(gang)(gang)管(guan)冷成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)(xing)要(yao)求:由(you)于切(qie)(qie)不(bu)(bu)(bu)(bu)(bu)銹(xiu)鋼(gang)(gang)(gang)管(guan)具有很高的(de)(de)(de)(de)(de)抗(kang)拉強度(du)(du)(du)(du)(du)和硬(ying)度(du)(du)(du)(du)(du)，其抵抗(kang)變形(xing)(xing)(xing)(xing)(xing)(xing)的(de)(de)(de)(de)(de)能力(li)(li)(li)較高，在(zai)(zai)(zai)筒體(ti)、封頭冷成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)(xing)過(guo)(guo)程中(zhong)(zhong)需要(yao)的(de)(de)(de)(de)(de)彎曲(qu)作(zuo)用力(li)(li)(li)就要(yao)大得多；另外，冷塑(su)性(xing)(xing)(xing)形(xing)(xing)(xing)(xing)(xing)(xing)變會(hui)惡(e)化(hua)(hua)(hua)雙相(xiang)(xiang)(xiang)不(bu)(bu)(bu)(bu)(bu)銹(xiu)鋼(gang)(gang)(gang)的(de)(de)(de)(de)(de)耐(nai)應(ying)力(li)(li)(li)腐(fu)(fu)蝕(shi)性(xing)(xing)(xing)能，因此(ci)(ci)建議鋼(gang)(gang)(gang)板的(de)(de)(de)(de)(de)變形(xing)(xing)(xing)(xing)(xing)(xing)率(lv)超過(guo)(guo)１０％時(shi)，成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)(xing)后(hou)(hou)應(ying)對(dui)(dui)其進(jin)(jin)行(xing)(xing)固溶(rong)處理(li)(li)。鋼(gang)(gang)(gang)板變形(xing)(xing)(xing)(xing)(xing)(xing)率(lv)：ε＝１．５δ／２Ｒ（２）式中(zhong)(zhong) δ———鋼(gang)(gang)(gang)板的(de)(de)(de)(de)(de)名義厚(hou)度(du)(du)(du)(du)(du)，ｍｍ； Ｒ———鋼(gang)(gang)(gang)板彎曲(qu)變形(xing)(xing)(xing)(xing)(xing)(xing)后(hou)(hou)的(de)(de)(de)(de)(de)中(zhong)(zhong)性(xing)(xing)(xing)半(ban)徑，ｍｍ。固溶(rong)處理(li)(li)后(hou)(hou)再(zai)進(jin)(jin)行(xing)(xing)金相(xiang)(xiang)(xiang)檢驗(yan)，對(dui)(dui)于切(qie)(qie)不(bu)(bu)(bu)(bu)(bu)銹(xiu)鋼(gang)(gang)(gang)管(guan)鐵(tie)(tie)素(su)(su)(su)體(ti)含量５０％～５５％為最佳。切(qie)(qie)不(bu)(bu)(bu)(bu)(bu)銹(xiu)鋼(gang)(gang)(gang)管(guan)強度(du)(du)(du)(du)(du)高，表面(mian)應(ying)力(li)(li)(li)大，成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)(xing)作(zuo)用力(li)(li)(li)大，表面(mian)缺陷容易誘(you)發(fa)(fa)開(kai)(kai)裂(lie)；因此(ci)(ci)材(cai)料(liao)表面(mian)應(ying)做表面(mian)檢測，并消除表面(mian)缺陷。鐵(tie)(tie)素(su)(su)(su)體(ti)相(xiang)(xiang)(xiang)會(hui)使(shi)工件冷成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)(xing)仍具有方向性(xing)(xing)(xing)，成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)(xing)后(hou)(hou)直邊余量不(bu)(bu)(bu)(bu)(bu)等，建議下(xia)(xia)料(liao)尺寸應(ying)比不(bu)(bu)(bu)(bu)(bu)銹(xiu)鋼(gang)(gang)(gang)略大。 熱(re)(re)(re)(re)(re)(re)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)(xing)要(yao)求 切(qie)(qie)不(bu)(bu)(bu)(bu)(bu)銹(xiu)鋼(gang)(gang)(gang)管(guan)熱(re)(re)(re)(re)(re)(re)加工成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)(xing)過(guo)(guo)程中(zhong)(zhong)要(yao)控制好(hao)始壓溫(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)和終壓溫(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)，為了(le)避免(mian)產生脆(cui)化(hua)(hua)(hua)現象，如切(qie)(qie)不(bu)(bu)(bu)(bu)(bu)銹(xiu)鋼(gang)(gang)(gang)管(guan)應(ying)在(zai)(zai)(zai)１２３０～１０２５℃范圍(wei)內(nei)(nei)進(jin)(jin)行(xing)(xing)熱(re)(re)(re)(re)(re)(re)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)(xing)操(cao)作(zuo)，熱(re)(re)(re)(re)(re)(re)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)(xing)后(hou)(hou)立即進(jin)(jin)行(xing)(xing)固溶(rong)處理(li)(li)。如果熱(re)(re)(re)(re)(re)(re)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)(xing)的(de)(de)(de)(de)(de)溫(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)太低，變形(xing)(xing)(xing)(xing)(xing)(xing)就會(hui)聚集在(zai)(zai)(zai)較弱而(er)且(qie)塑(su)性(xing)(xing)(xing)較差(cha)的(de)(de)(de)(de)(de)鐵(tie)(tie)素(su)(su)(su)體(ti)，結果造(zao)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)鐵(tie)(tie)素(su)(su)(su)體(ti)在(zai)(zai)(zai)變形(xing)(xing)(xing)(xing)(xing)(xing)區的(de)(de)(de)(de)(de)嚴(yan)重開(kai)(kai)裂(lie)。如果熱(re)(re)(re)(re)(re)(re)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)(xing)的(de)(de)(de)(de)(de)溫(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)太高，則(ze)鐵(tie)(tie)素(su)(su)(su)體(ti)變得非常軟(ruan)且(qie)可(ke)能發(fa)(fa)生熱(re)(re)(re)(re)(re)(re)撕裂(lie)。實際的(de)(de)(de)(de)(de)熱(re)(re)(re)(re)(re)(re)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)(xing)應(ying)在(zai)(zai)(zai)給定的(de)(de)(de)(de)(de)溫(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)范圍(wei)進(jin)(jin)行(xing)(xing)，因為鐵(tie)(tie)素(su)(su)(su)體(ti)和奧氏(shi)體(ti)都有良好(hao)的(de)(de)(de)(de)(de)熱(re)(re)(re)(re)(re)(re)塑(su)性(xing)(xing)(xing)；因此(ci)(ci)熱(re)(re)(re)(re)(re)(re)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)(xing)工藝中(zhong)(zhong)控制溫(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)范圍(wei)及溫(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)均(jun)勻是一(yi)個(ge)難點。 ２５０７不(bu)(bu)(bu)(bu)(bu)銹(xiu)鋼(gang)(gang)(gang)熱(re)(re)(re)(re)(re)(re)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)(xing)操(cao)作(zuo)中(zhong)(zhong)應(ying)注意以(yi)下(xia)(xia)幾(ji)點： （１）由(you)于雙相(xiang)(xiang)(xiang)不(bu)(bu)(bu)(bu)(bu)銹(xiu)鋼(gang)(gang)(gang)室溫(wen)(wen)(wen)(wen)強度(du)(du)(du)(du)(du)高，扭(niu)曲(qu)變形(xing)(xing)(xing)(xing)(xing)(xing)的(de)(de)(de)(de)(de)產品再(zai)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)(xing)或矯直比奧氏(shi)體(ti)不(bu)(bu)(bu)(bu)(bu)銹(xiu)鋼(gang)(gang)(gang)困難，因此(ci)(ci)在(zai)(zai)(zai)固溶(rong)溫(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)下(xia)(xia)，對(dui)(dui)薄壁(bi)、大口徑工件設置足(zu)夠的(de)(de)(de)(de)(de)支(zhi)撐(cheng)十分必要(yao)。 （２）４７５℃脆(cui)化(hua)(hua)(hua)區一(yi)般會(hui)在(zai)(zai)(zai)３５０～５２５℃溫(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)范圍(wei)內(nei)(nei)出現，因此(ci)(ci)熱(re)(re)(re)(re)(re)(re)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)(xing)操(cao)作(zuo)中(zhong)(zhong)嚴(yan)格禁止在(zai)(zai)(zai)此(ci)(ci)溫(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)范圍(wei)內(nei)(nei)作(zuo)業(ye)。 （３）坯料(liao)加熱(re)(re)(re)(re)(re)(re)出爐后(hou)(hou)溫(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)下(xia)(xia)降迅速(su)，散(san)熱(re)(re)(re)(re)(re)(re)快，很快可(ke)達脆(cui)化(hua)(hua)(hua)區；因此(ci)(ci)出爐至(zhi)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)(xing)時(shi)間(jian)應(ying)盡量縮短，封頭成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)(xing)后(hou)(hou)脫模溫(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)不(bu)(bu)(bu)(bu)(bu)應(ying)低于９５０℃。熱(re)(re)(re)(re)(re)(re)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)(xing)過(guo)(guo)程中(zhong)(zhong)建議對(dui)(dui)溫(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)進(jin)(jin)行(xing)(xing)嚴(yan)格監(jian)控。 （４）坯料(liao)在(zai)(zai)(zai)加熱(re)(re)(re)(re)(re)(re)過(guo)(guo)程中(zhong)(zhong)，當(dang)溫(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)低于６００℃時(shi)可(ke)以(yi)適當(dang)減小(xiao)加熱(re)(re)(re)(re)(re)(re)速(su)率(lv)，溫(wen)(wen)(wen)(wen)度(du)(du)(du)(du)(du)升至(zhi)８００℃左右時(shi)加熱(re)(re)(re)(re)(re)(re)速(su)率(lv)可(ke)以(yi)適當(dang)提高。 （５）由(you)于熱(re)(re)(re)(re)(re)(re)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)(xing)會(hui)使(shi)材(cai)料(liao)金相(xiang)(xiang)(xiang)失去相(xiang)(xiang)(xiang)平衡，進(jin)(jin)而(er)影響(xiang)材(cai)料(liao)的(de)(de)(de)(de)(de)力(li)(li)(li)學性(xing)(xing)(xing)能和耐(nai)腐(fu)(fu)蝕(shi)性(xing)(xing)(xing)能。熱(re)(re)(re)(re)(re)(re)成(cheng)(cheng)(cheng)(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)(xing)(xing)后(hou)(hou)應(ying)立即進(jin)(jin)行(xing)(xing)固溶(rong)熱(re)(re)(re)(re)(re)(re)處理(li)(li)。
公司介紹：
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鄭重(zhong)承諾(nuo)，在(zai)同等的(de)(de)質(zhi)量下，保證以最(zui)低(di)的(de)(de)價(jia)格，最(zui)完善的(de)(de)服務，最(zui)高的(de)(de)信(xin)譽來答謝(xie)各界朋友的(de)(de)支持(chi)與厚(hou)愛。歡迎垂詢光臨！
切不銹鋼管價格整體上漲市場成交一般