快活视频

　　熱軋無縫鋼管與冷拔無縫鋼管是什么?有什么特點?這些知識對于我們來講，需要深入了解。今天無縫鋼管廠就來給大家分享一下。

　　一、熱軋無縫鋼管與冷拔無縫鋼管是什么?

　　熱軋(擠壓無縫鋼管)：

　　圓(yuan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)坯→加熱(re)→穿(chuan)孔(kong)→三輥(gun)斜軋(ya)(ya)(ya)(ya)、連軋(ya)(ya)(ya)(ya)或擠壓(ya)→脫管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)→定徑(或減徑)→冷(leng)(leng)(leng)卻→矯直(zhi)→水壓(ya)試驗(或探(tan)傷)→標(biao)記→入庫 無(wu)(wu)縫鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)是用鋼(gang)(gang)(gang)(gang)(gang)錠或實心管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)坯經穿(chuan)孔(kong)制成(cheng)毛(mao)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)，然后經熱(re)軋(ya)(ya)(ya)(ya)、冷(leng)(leng)(leng)軋(ya)(ya)(ya)(ya)或冷(leng)(leng)(leng)撥(bo)制成(cheng)。無(wu)(wu)縫鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)規格用外徑*壁(bi)厚毫(hao)米數表(biao)示。無(wu)(wu)縫鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)分熱(re)軋(ya)(ya)(ya)(ya)和冷(leng)(leng)(leng)軋(ya)(ya)(ya)(ya)(撥(bo))無(wu)(wu)縫鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)兩類。 熱(re)軋(ya)(ya)(ya)(ya)無(wu)(wu)縫鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)分一般(ban)(ban)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)，低、中壓(ya)鍋爐鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)，高壓(ya)鍋爐鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、合金鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、不銹鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、石(shi)油裂化(hua)(hua)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、地(di)質鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)和其(qi)它(ta)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)等(deng)。冷(leng)(leng)(leng)軋(ya)(ya)(ya)(ya)(撥(bo))無(wu)(wu)縫鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)除分一般(ban)(ban)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、低中壓(ya)鍋爐鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、高壓(ya)鍋爐鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、合金鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、不銹鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、石(shi)油裂化(hua)(hua)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、其(qi)它(ta)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)外，還包括碳素(su)薄(bo)壁(bi)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、合金薄(bo)壁(bi)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、不銹薄(bo)壁(bi)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、異型(xing)鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)。熱(re)軋(ya)(ya)(ya)(ya)無(wu)(wu)縫管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)外徑一般(ban)(ban)大于32mm，壁(bi)厚2.5-75mm，冷(leng)(leng)(leng)軋(ya)(ya)(ya)(ya)無(wu)(wu)縫鋼(gang)(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)處徑可以到(dao)6mm，壁(bi)厚可到(dao)0.25mm，薄(bo)壁(bi)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)外徑可到(dao)5mm壁(bi)厚小于0.25mm，冷(leng)(leng)(leng)軋(ya)(ya)(ya)(ya)比熱(re)軋(ya)(ya)(ya)(ya)尺寸(cun)精度高。

　　一般用(yong)(yong)(yong)無(wu)(wu)縫(feng)(feng)鋼(gang)管(guan)是用(yong)(yong)(yong)10、20、30、35、45等優質碳(tan)結(jie)鋼(gang)16Mn、5MnV等低合金結(jie)構鋼(gang)或(huo)40Cr、30CrMnSi、45Mn2、40MnB等合結(jie)鋼(gang)熱(re)(re)軋(ya)或(huo)冷軋(ya)制成的(de)(de)。10、20等低碳(tan)鋼(gang)制造的(de)(de)無(wu)(wu)縫(feng)(feng)管(guan)主要用(yong)(yong)(yong)于(yu)流體輸送(song)管(guan)道。45、40Cr等中碳(tan)鋼(gang)制成的(de)(de)無(wu)(wu)縫(feng)(feng)管(guan)用(yong)(yong)(yong)來制造機械零(ling)件，如(ru)汽車(che)、拖拉機的(de)(de)受力零(ling)件。一般用(yong)(yong)(yong)無(wu)(wu)縫(feng)(feng)鋼(gang)管(guan)要保證強度和壓扁試驗。熱(re)(re)軋(ya)鋼(gang)管(guan)以(yi)熱(re)(re)軋(ya)狀態或(huo)熱(re)(re)處理狀態交貨;冷軋(ya)以(yi)熱(re)(re)以(yi)熱(re)(re)處理狀態交貨。

　　熱軋(ya)(ya)(ya)，顧名思義，軋(ya)(ya)(ya)件的溫(wen)度(du)高，因此變形抗力小，可以實(shi)現大的變形量。以鋼板(ban)的軋(ya)(ya)(ya)制(zhi)為(wei)例，一般連鑄(zhu)坯厚(hou)度(du)在230mm左右，而(er)經過粗軋(ya)(ya)(ya)和精(jing)(jing)軋(ya)(ya)(ya)，最終厚(hou)度(du)為(wei)1~20mm。同(tong)時，由(you)于鋼板(ban)的寬厚(hou)比小，尺(chi)寸精(jing)(jing)度(du)要求相對(dui)低，不容易出現板(ban)形問題，以控制(zhi)凸度(du)為(wei)主。對(dui)于組織有要求的，一般通(tong)過控軋(ya)(ya)(ya)控冷來(lai)實(shi)現，即控制(zhi)精(jing)(jing)軋(ya)(ya)(ya)的開軋(ya)(ya)(ya)溫(wen)度(du)、終軋(ya)(ya)(ya)溫(wen)度(du)

　　冷拔(軋)無縫鋼管：

　　圓管坯(pi)→加熱→穿孔→打頭→退火→酸洗(xi)→涂油(鍍銅)→多道(dao)次冷拔(冷軋)→坯(pi)管→熱處理→矯直(zhi)→水壓(ya)試(shi)驗(探傷)→標記→入庫

　　二、熱軋無縫鋼管與冷拔精密鋼管的特點

　　熱軋無縫鋼管的特點：

　　熱(re)軋是(shi)相對于(yu)冷軋而(er)(er)言的(de)(de)，冷軋是(shi)在(zai)(zai)再結晶溫(wen)度以(yi)下進(jin)(jin)行(xing)的(de)(de)軋制，而(er)(er)熱(re)軋就是(shi)在(zai)(zai)再結晶溫(wen)度以(yi)上(shang)進(jin)(jin)行(xing)的(de)(de)軋制。熱(re)軋能夠損壞鋼(gang)錠的(de)(de)鍛(duan)造安(an)排，細(xi)化鋼(gang)材(cai)的(de)(de)晶粒，并消除顯微安(an)排的(de)(de)缺(que)點，從而(er)(er)使鋼(gang)材(cai)安(an)排密(mi)實，力學性(xing)能得到改進(jin)(jin)。這種改進(jin)(jin)主要體(ti)現在(zai)(zai)沿軋制方(fang)向(xiang)上(shang)，從而(er)(er)使鋼(gang)材(cai)在(zai)(zai)必(bi)定程度上(shang)不再是(shi)各向(xiang)同性(xing)體(ti);澆注(zhu)時(shi)構成的(de)(de)氣泡、裂紋和疏松，也可(ke)在(zai)(zai)高溫(wen)文壓力效果(guo)下被焊合。

　　熱軋無縫(feng)鋼管分一般鋼管，低(di)、中壓鍋爐鋼管，高壓鍋爐鋼管、合金鋼管、不(bu)銹鋼管、石油裂化管、地質鋼管和其它鋼管等。

　　冷拔精密鋼管的特點 ：

　　1.外(wai)徑更小。

　　2.精度高可做小批量生

　　3.冷(leng)拔(ba)成品精度(du)高(gao)，表面質量好。

　　4.鋼管橫面積更(geng)復雜。

　　5.鋼(gang)管性能更優越，金屬比(bi)較密。

　　熱軋精密鋼管后的區別 ：

　　熱(re)(re)(re)(re)軋(ya)(ya)精(jing)密鋼(gang)(gang)管(guan)用連(lian)鑄圓管(guan)坯(pi)(pi)板(ban)(ban)坯(pi)(pi)或(huo)初軋(ya)(ya)板(ban)(ban)坯(pi)(pi)作原(yuan)料，經(jing)(jing)步進(jin)(jin)式加熱(re)(re)(re)(re)爐加熱(re)(re)(re)(re)，高壓水除鱗后進(jin)(jin)入粗軋(ya)(ya)機(ji)(ji)，粗軋(ya)(ya)料經(jing)(jing)切(qie)頭、尾(wei)(wei)、再(zai)進(jin)(jin)入精(jing)軋(ya)(ya)機(ji)(ji)，實施計(ji)算機(ji)(ji)控制(zhi)軋(ya)(ya)制(zhi)，終軋(ya)(ya)后即經(jing)(jing)過層流冷卻和卷(juan)(juan)(juan)(juan)取機(ji)(ji)卷(juan)(juan)(juan)(juan)取、成(cheng)為(wei)直(zhi)(zhi)發(fa)卷(juan)(juan)(juan)(juan)。直(zhi)(zhi)發(fa)卷(juan)(juan)(juan)(juan)的(de)頭、尾(wei)(wei)往往呈舌狀及魚(yu)尾(wei)(wei)狀，厚度(du)、寬度(du)精(jing)度(du)較差，邊部常存在(zai)浪(lang)形、折邊、塔形等缺陷。其卷(juan)(juan)(juan)(juan)重(zhong)較重(zhong)、鋼(gang)(gang)卷(juan)(juan)(juan)(juan)內(nei)徑為(wei)760mm。將直(zhi)(zhi)發(fa)卷(juan)(juan)(juan)(juan)經(jing)(jing)切(qie)頭、切(qie)尾(wei)(wei)、切(qie)邊及多道次的(de)矯直(zhi)(zhi)、平(ping)整(zheng)(zheng)等精(jing)整(zheng)(zheng)線處(chu)理后，再(zai)切(qie)板(ban)(ban)或(huo)重(zhong)卷(juan)(juan)(juan)(juan)，即成(cheng)為(wei)：熱(re)(re)(re)(re)軋(ya)(ya)鋼(gang)(gang)板(ban)(ban)、平(ping)整(zheng)(zheng)熱(re)(re)(re)(re)軋(ya)(ya)鋼(gang)(gang)卷(juan)(juan)(juan)(juan)、縱切(qie)帶(dai)等產品。熱(re)(re)(re)(re)軋(ya)(ya)精(jing)整(zheng)(zheng)卷(juan)(juan)(juan)(juan)若(ruo)經(jing)(jing)酸洗去除氧化皮(pi)并涂油后即成(cheng)熱(re)(re)(re)(re)軋(ya)(ya)酸洗板(ban)(ban)卷(juan)(juan)(juan)(juan)。

　　三、熱軋無縫鋼管每米重量表