文章(zhang)來(lai)源:天津大無縫鋼(gang)管廠| 時間:2017/5/20 16:36:51
大口(kou)(kou)徑(jing)(jing)(jing)(jing)厚(hou)(hou)壁無(wu)縫(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)是(shi)(shi)(shi)用鋼(gang)(gang)(gang)(gang)錠或(huo)實心管(guan)(guan)(guan)(guan)(guan)坯(pi)(pi)(pi)經(jing)穿(chuan)(chuan)(chuan)孔(kong)制(zhi)(zhi)成毛管(guan)(guan)(guan)(guan)(guan),然(ran)后(hou)(hou)(hou)(hou)經(jing)熱(re)軋(ya)制(zhi)(zhi)成。大口(kou)(kou)徑(jing)(jing)(jing)(jing)厚(hou)(hou)壁無(wu)縫(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)在(zai)我(wo)國鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)業中(zhong)具有(you)重要的(de)地位。據不完全(quan)統計,我(wo)國現有(you)無(wu)縫(feng)(feng)(feng)管(guan)(guan)(guan)(guan)(guan)生產(chan)企業約240多家(jia),大口(kou)(kou)徑(jing)(jing)(jing)(jing)厚(hou)(hou)壁無(wu)縫(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)機(ji)(ji)(ji)(ji)組約250多套,大口(kou)(kou)徑(jing)(jing)(jing)(jing)的(de)厚(hou)(hou)壁無(wu)縫(feng)(feng)(feng)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)主要是(shi)(shi)(shi)以(yi)(yi)它的(de)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)的(de)外部(bu)口(kou)(kou)徑(jing)(jing)(jing)(jing)來說的(de),一(yi)(yi)般(ban)(ban)外徑(jing)(jing)(jing)(jing)在(zai)325毫米以(yi)(yi)上的(de)我(wo)們都(dou)稱為(wei)大口(kou)(kou)徑(jing)(jing)(jing)(jing)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan),厚(hou)(hou)壁呢,一(yi)(yi)般(ban)(ban)壁厚(hou)(hou)在(zai)20毫米以(yi)(yi)上的(de)就(jiu)可以(yi)(yi)了(le), 以(yi)(yi)下是(shi)(shi)(shi)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)的(de)制(zhi)(zhi)造過(guo)程:鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)的(de)原料是(shi)(shi)(shi)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)坯(pi)(pi)(pi)料,管(guan)(guan)(guan)(guan)(guan)坯(pi)(pi)(pi)要經(jing)過(guo)切割(ge)機(ji)(ji)(ji)(ji)的(de)切割(ge)加(jia)(jia)(jia)工成長度(du)(du)約為(wei)1米的(de)坯(pi)(pi)(pi)料,并經(jing)傳(chuan)送(song)(song)帶送(song)(song)到熔(rong)爐內(nei)(nei)加(jia)(jia)(jia)熱(re)。鋼(gang)(gang)(gang)(gang)坯(pi)(pi)(pi)被(bei)送(song)(song)入熔(rong)爐內(nei)(nei)加(jia)(jia)(jia)熱(re),溫(wen)度(du)(du)大約為(wei)1200℃。燃(ran)料為(wei)氫氣(qi)或(huo)乙炔。爐內(nei)(nei)溫(wen)度(du)(du)控(kong)制(zhi)(zhi)是(shi)(shi)(shi)關鍵性的(de)問題·圓管(guan)(guan)(guan)(guan)(guan)坯(pi)(pi)(pi)出爐后(hou)(hou)(hou)(hou)要經(jing)過(guo)壓力(li)穿(chuan)(chuan)(chuan)孔(kong)機(ji)(ji)(ji)(ji)進行穿(chuan)(chuan)(chuan)空。一(yi)(yi)般(ban)(ban)較常見(jian)的(de)穿(chuan)(chuan)(chuan)孔(kong)機(ji)(ji)(ji)(ji)是(shi)(shi)(shi)錐形(xing)(xing)輥穿(chuan)(chuan)(chuan)孔(kong)機(ji)(ji)(ji)(ji),這種穿(chuan)(chuan)(chuan)孔(kong)機(ji)(ji)(ji)(ji)生產(chan)效率高(gao),產(chan)品(pin)質(zhi)量好,穿(chuan)(chuan)(chuan)孔(kong)擴徑(jing)(jing)(jing)(jing)量大,可穿(chuan)(chuan)(chuan)多種鋼(gang)(gang)(gang)(gang)種。穿(chuan)(chuan)(chuan)孔(kong)后(hou)(hou)(hou)(hou),圓管(guan)(guan)(guan)(guan)(guan)坯(pi)(pi)(pi)就(jiu)先后(hou)(hou)(hou)(hou)被(bei)三輥斜軋(ya)、連軋(ya)或(huo)擠壓。擠壓后(hou)(hou)(hou)(hou)要脫管(guan)(guan)(guan)(guan)(guan)定徑(jing)(jing)(jing)(jing)。定徑(jing)(jing)(jing)(jing)機(ji)(ji)(ji)(ji)通過(guo)錐形(xing)(xing)鉆頭(tou)高(gao)速旋轉入鋼(gang)(gang)(gang)(gang)胚打孔(kong),形(xing)(xing)成鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)。鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)內(nei)(nei)徑(jing)(jing)(jing)(jing)由(you)定徑(jing)(jing)(jing)(jing)機(ji)(ji)(ji)(ji)鉆頭(tou)的(de)外徑(jing)(jing)(jing)(jing)長度(du)(du)來確(que)定。鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)經(jing)定徑(jing)(jing)(jing)(jing)后(hou)(hou)(hou)(hou),進入冷卻塔中(zhong),通過(guo)噴水(shui)冷卻,鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)經(jing)冷卻后(hou)(hou)(hou)(hou),就(jiu)要被(bei)矯(jiao)直(zhi)(zhi)(其實現在(zai)很多的(de)廠家(jia)已經(jing)不用再(zai)矯(jiao)直(zhi)(zhi)機(ji)(ji)(ji)(ji)矯(jiao)直(zhi)(zhi)了(le),而是(shi)(shi)(shi)在(zai)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)通過(guo)軋(ya)機(ji)(ji)(ji)(ji)就(jiu)直(zhi)(zhi)接達到了(le)它的(de)鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)本(ben)身(shen)的(de)直(zhi)(zhi)度(du)(du)了(le))。鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)經(jing)矯(jiao)直(zhi)(zhi)后(hou)(hou)(hou)(hou)由(you)傳(chuan)送(song)(song)帶送(song)(song)至金屬(shu)探(tan)(tan)(tan)傷機(ji)(ji)(ji)(ji)(或(huo)水(shui)壓實驗)進行內(nei)(nei)部(bu)探(tan)(tan)(tan)傷。若鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)內(nei)(nei)部(bu)有(you)裂(lie)紋,氣(qi)泡(pao)等問題,將被(bei)探(tan)(tan)(tan)測出。鋼(gang)(gang)(gang)(gang)管(guan)(guan)(guan)(guan)(guan)質(zhi)檢(jian)后(hou)(hou)(hou)(hou)還(huan)要通過(guo)嚴(yan)格的(de)手工挑選(現在(zai)都(dou)有(you)激光(guang)探(tan)(tan)(tan)測檢(jian)驗)。