貴陽(yang)GB3087低中壓鍋爐(lu)管價格

　　低(di)中(zhong)壓鍋爐(lu)管(guan)(guan)(guan)：用(yong)(yong)于制造各種低(di)中(zhong)壓鍋爐(lu)、過熱(re)(re)蒸汽管(guan)(guan)(guan)、沸水管(guan)(guan)(guan)、水冷(leng)壁管(guan)(guan)(guan)及(ji)機(ji)車鍋爐(lu)用(yong)(yong)過熱(re)(re)蒸汽管(guan)(guan)(guan)、大煙(yan)管(guan)(guan)(guan)、小煙(yan)管(guan)(guan)(guan)和拱(gong)磚管(guan)(guan)(guan)等(deng)。用(yong)(yong)優質碳素結構鋼(gang)(gang)熱(re)(re)軋或冷(leng)軋(撥)無縫鋼(gang)(gang)管(guan)(guan)(guan)。主(zhu)要用(yong)(yong)10、20號鋼(gang)(gang)制造，除保(bao)證化學成分和機(ji)械性(xing)能外要做水壓試驗(yan)，卷邊、擴口、壓扁等(deng)試驗(yan)。熱(re)(re)軋以熱(re)(re)軋狀態交(jiao)貨、冷(leng)軋(撥)以熱(re)(re)處理狀態交(jiao)貨。

　　低中壓(ya)鍋爐管力學性能： 　抗(kang)拉強(qiang)度 σb (MPa)：≥410(42)屈服強(qiang)度 σs (MPa)：≥245(25)伸長率 δ5 (%)：≥25斷(duan)面收縮率 ψ (%)：≥5，硬度 ：未熱(re)處(chu)理(li)(li),≤156HB，試樣尺寸(cun)：試樣尺寸(cun)25mm 　熱(re)處(chu)理(li)(li)規范(fan)及(ji)金相(xiang)組(zu)織(zhi)(zhi)： 　熱(re)處(chu)理(li)(li)規范(fan)：正火,910℃,空冷(leng)。金相(xiang)組(zu)織(zhi)(zhi)：鐵素體+珠光體。

　　軋(ya)制無縫管(guan)的(de)(de)(de)原料(liao)(liao)是圓(yuan)管(guan)坯(pi)，圓(yuan)管(guan)胚要經(jing)過(guo)切割機的(de)(de)(de)切割加工(gong)成(cheng)長度(du)約為1米的(de)(de)(de)坯(pi)料(liao)(liao)，并經(jing)傳送(song)(song)帶(dai)送(song)(song)到(dao)熔(rong)(rong)爐(lu)內(nei)加熱。鋼(gang)坯(pi)被送(song)(song)入熔(rong)(rong)爐(lu)內(nei)加熱，溫(wen)度(du)大約為1200℃。燃料(liao)(liao)為氫氣(qi)或(huo)乙炔。爐(lu)內(nei)溫(wen)度(du)控制是關鍵性的(de)(de)(de)問題.圓(yuan)管(guan)坯(pi)出爐(lu)后(hou)(hou)要經(jing)過(guo)壓(ya)力穿(chuan)(chuan)孔(kong)機進(jin)行穿(chuan)(chuan)空。一般較常見的(de)(de)(de)穿(chuan)(chuan)孔(kong)機是錐(zhui)形輥(gun)穿(chuan)(chuan)孔(kong)機，這種(zhong)穿(chuan)(chuan)孔(kong)機生產效率高，產品質(zhi)量好，穿(chuan)(chuan)孔(kong)擴徑(jing)(jing)量大，可(ke)穿(chuan)(chuan)多(duo)種(zhong)鋼(gang)種(zhong)。穿(chuan)(chuan)孔(kong)后(hou)(hou)，圓(yuan)管(guan)坯(pi)就先后(hou)(hou)被三(san)輥(gun)斜軋(ya)、連軋(ya)或(huo)擠(ji)壓(ya)。擠(ji)壓(ya)后(hou)(hou)要脫管(guan)定(ding)徑(jing)(jing)。定(ding)徑(jing)(jing)機通(tong)過(guo)錐(zhui)形鉆(zhan)頭高速旋轉入鋼(gang)胚打(da)孔(kong)，形成(cheng)鋼(gang)管(guan)。鋼(gang)管(guan)內(nei)徑(jing)(jing)由(you)定(ding)徑(jing)(jing)機鉆(zhan)頭的(de)(de)(de)外徑(jing)(jing)長度(du)來確定(ding)。鋼(gang)管(guan)經(jing)定(ding)徑(jing)(jing)后(hou)(hou)，進(jin)入冷卻塔中，通(tong)過(guo)噴水(shui)冷卻，鋼(gang)管(guan)經(jing)冷卻后(hou)(hou)，就要被矯直(zhi)。鋼(gang)管(guan)經(jing)矯直(zhi)后(hou)(hou)由(you)傳送(song)(song)帶(dai)送(song)(song)至金屬探傷機(或(huo)水(shui)壓(ya)實驗)進(jin)行內(nei)部探傷。若鋼(gang)管(guan)內(nei)部有裂紋，氣(qi)泡等問題，將被探測出。鋼(gang)管(guan)質(zhi)檢后(hou)(hou)還要通(tong)過(guo)嚴格的(de)(de)(de)手工(gong)挑選。鋼(gang)管(guan)質(zhi)檢后(hou)(hou)，用(yong)油漆噴上(shang)編號、規格、生產批(pi)號等。并由(you)吊(diao)車(che)吊(diao)入倉庫(ku)中。