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軋(ya)制(zhi)無縫(feng)管(guan)(guan)(guan)的(de)(de)原料是圓(yuan)管(guan)(guan)(guan)坯(pi)(pi)(pi),圓(yuan)管(guan)(guan)(guan)胚(pei)要經(jing)過(guo)切(qie)(qie)割機(ji)的(de)(de)切(qie)(qie)割加工成長度(du)(du)約(yue)為1米的(de)(de)坯(pi)(pi)(pi)料,并經(jing)傳(chuan)送(song)(song)(song)帶送(song)(song)(song)到熔爐(lu)內(nei)(nei)(nei)加熱(re)。鋼(gang)坯(pi)(pi)(pi)被送(song)(song)(song)入(ru)(ru)熔爐(lu)內(nei)(nei)(nei)加熱(re),溫度(du)(du)大(da)約(yue)為1200攝氏度(du)(du)。燃料為氫氣(qi)或(huo)乙炔。爐(lu)內(nei)(nei)(nei)溫度(du)(du)控制(zhi)是關鍵性的(de)(de)問題.圓(yuan)管(guan)(guan)(guan)坯(pi)(pi)(pi)出(chu)爐(lu)后(hou)要經(jing)過(guo)壓(ya)(ya)力穿孔(kong)機(ji)進(jin)(jin)行穿空。一般較常(chang)見的(de)(de)穿孔(kong)機(ji)是錐(zhui)形(xing)輥(gun)穿孔(kong)機(ji),這種穿孔(kong)機(ji)生產效(xiao)率(lv)高(gao),產品質(zhi)量好,穿孔(kong)擴(kuo)徑(jing)(jing)量大(da),可(ke)穿多種鋼(gang)種。穿孔(kong)后(hou),圓(yuan)管(guan)(guan)(guan)坯(pi)(pi)(pi)就先后(hou)被三輥(gun)斜軋(ya)、連軋(ya)或(huo)擠壓(ya)(ya)。擠壓(ya)(ya)后(hou)要脫(tuo)管(guan)(guan)(guan)定(ding)(ding)徑(jing)(jing)。定(ding)(ding)徑(jing)(jing)機(ji)通(tong)過(guo)錐(zhui)形(xing)鉆頭(tou)高(gao)速旋轉入(ru)(ru)鋼(gang)胚(pei)打(da)孔(kong),形(xing)成鋼(gang)管(guan)(guan)(guan)。鋼(gang)管(guan)(guan)(guan)內(nei)(nei)(nei)徑(jing)(jing)由定(ding)(ding)徑(jing)(jing)機(ji)鉆頭(tou)的(de)(de)外徑(jing)(jing)長度(du)(du)來確定(ding)(ding)。鋼(gang)管(guan)(guan)(guan)經(jing)定(ding)(ding)徑(jing)(jing)后(hou),進(jin)(jin)入(ru)(ru)冷(leng)卻塔中,通(tong)過(guo)噴水(shui)冷(leng)卻,鋼(gang)管(guan)(guan)(guan)經(jing)冷(leng)卻后(hou),就要被矯直。鋼(gang)管(guan)(guan)(guan)經(jing)矯直后(hou)由傳(chuan)送(song)(song)(song)帶送(song)(song)(song)至金屬探(tan)傷(shang)機(ji)(或(huo)水(shui)壓(ya)(ya)實(shi)驗)進(jin)(jin)行內(nei)(nei)(nei)部(bu)探(tan)傷(shang)。若鋼(gang)管(guan)(guan)(guan)內(nei)(nei)(nei)部(bu)有裂紋,氣(qi)泡等問題,將被探(tan)測出(chu)。鋼(gang)管(guan)(guan)(guan)質(zhi)檢后(hou)還(huan)要通(tong)過(guo)嚴格的(de)(de)手工挑選。鋼(gang)管(guan)(guan)(guan)質(zhi)檢后(hou),用油漆噴上編號、規格、生產批號等。并由吊車(che)吊入(ru)(ru)倉庫中。


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