一、無縫不銹鋼管的原材料是什么

無縫不銹鋼管的原材料(liao)主要包括不(bu)(bu)銹鋼(gang)(gang)型(xing)號(hao)、化(hua)學(xue)成分等(deng)。常用(yong)的不(bu)(bu)銹鋼(gang)(gang)型(xing)號(hao)有(you) 304、304L、316、316L 等(deng)，不(bu)(bu)同型(xing)號(hao)的不(bu)(bu)銹鋼(gang)(gang)在(zai)化(hua)學(xue)成分上(shang)略有(you)差別。以下是(shi)常見(jian)不(bu)(bu)銹鋼(gang)(gang)的化(hua)學(xue)成分含(han)量表(biao)：

二、無縫不銹鋼管制作流程介紹

1、熱軋無縫不銹鋼管

熱(re)軋無(wu)縫(feng)管(guan)(guan)一般(ban)可(ke)分為中、低壓(ya)鍋爐(lu)鋼管(guan)(guan)、一般(ban)鋼管(guan)(guan)、高壓(ya)鍋爐(lu)鋼管(guan)(guan)、不(bu)銹(xiu)鋼管(guan)(guan)、合金鋼管(guan)(guan)等。其(qi)生(sheng)產工藝為：檢查準備(bei)管(guan)(guan)坯-加(jia)熱(re)管(guan)(guan)坯-穿孔(kong)-亞冠-荒管(guan)(guan)加(jia)熱(re)-確(que)定直(zhi)徑-熱(re)處(chu)理-矯直(zhi)成(cheng)(cheng)品管(guan)(guan)-精整－檢驗(yan)-入庫(ku)。無(wu)縫(feng)鋼管(guan)(guan)的原料(liao)是圓管(guan)(guan)坯，需要通(tong)過切割(ge)機切割(ge)成(cheng)(cheng)長(chang)約(yue)1m皮料(liao)，通(tong)過傳動(dong)帶送入熔爐(lu)加(jia)熱(re)，其(qi)高溫(wen)度約(yue)為1250攝氏(shi)度，解熱(re)管(guan)(guan)中的燃料(liao)大多是乙(yi)炔或氡(dong)。管(guan)(guan)胚出爐(lu)后(hou)，還需要穿孔(kong)，然后(hou)被連扎、三輥軋。定徑則是用錐形鉆頭高壓(ya)旋(xuan)轉(zhuan)打(da)孔(kong)鋼坯，形成(cheng)(cheng)鋼管(guan)(guan)。

2、冷加工無縫不銹鋼管

通常以冷(leng)(leng)(leng)軋(ya)(ya)為(wei)(wei)主，冷(leng)(leng)(leng)拔(ba)為(wei)(wei)輔。約(yue)65%的無縫管需(xu)要通過冷(leng)(leng)(leng)加(jia)工(gong)(gong)制(zhi)成成品，促進了(le)冷(leng)(leng)(leng)加(jia)工(gong)(gong)工(gong)(gong)藝設(she)備的發展。一般冷(leng)(leng)(leng)加(jia)工(gong)(gong)工(gong)(gong)藝有冷(leng)(leng)(leng)軋(ya)(ya)工(gong)(gong)藝、冷(leng)(leng)(leng)拔(ba)工(gong)(gong)藝和冷(leng)(leng)(leng)軋(ya)(ya)冷(leng)(leng)(leng)拔(ba)聯合工(gong)(gong)藝三種。國外更多采用冷(leng)(leng)(leng)拔(ba)冷(leng)(leng)(leng)軋(ya)(ya)聯合工(gong)(gong)藝生產(chan)無縫管。

冷(leng)加(jia)工(gong)(gong)冷(leng)拔生(sheng)產無縫不銹鋼管的工(gong)(gong)藝(yi)流程為：外構(gou)管坯-切(qie)(qie)斷-加(jia)熱-穿孔-定尺截(jie)斷-錘頭-酸洗-潤滑-拔制-退火-切(qie)(qie)頭-水壓-檢查-成品(pin)。冷(leng)拔無縫不銹鋼管具有(you)生(sheng)產效率(lv)高、規格變更方便、靈(ling)活性強、設備和生(sheng)產方法(fa)簡單等優點。但它存在道(dao)次變量小、生(sheng)產加(jia)工(gong)(gong)時(shi)間長、金(jin)屬消耗(hao)較(jiao)多、表(biao)面光潔度差等缺陷(xian)。

冷(leng)加工(gong)冷(leng)軋生產無縫不銹鋼(gang)管的工(gong)藝流程為(wei)：煉(lian)鋼(gang)-圓鋼(gang)軋制-穿孔-冷(leng)拔(ba)-冷(leng)軋-退(tui)火光亮-拋(pao)光內表(biao)(biao)面(mian)-拋(pao)光外(wai)表(biao)(biao)面(mian)-驗收(shou)檢測-入庫包裝。冷(leng)軋工(gong)藝可以很(hen)好(hao)地改善無縫不銹鋼(gang)管表(biao)(biao)面(mian)質量(liang)，生產效率(lv)較(jiao)高。像采用國內主流鋼(gang)廠原料，通(tong)過冷(leng)拔(ba)和精(jing)軋，熱處理(li)酸洗工(gong)藝，最(zui)后經過320目(mu)表(biao)(biao)面(mian)拋(pao)光，具有(you)表(biao)(biao)面(mian)光潔(jie)度高，尺寸精(jing)密(mi)等特點(dian)，適用于高精(jing)度卡套連接(jie)應用管路系統。

3、熱擠壓無縫不銹鋼管

國外常用的(de)熱擠(ji)壓工(gong)(gong)藝是(shi)無縫不銹鋼管(guan)(guan)的(de)熱加(jia)(jia)工(gong)(gong)生產(chan)工(gong)(gong)藝之(zhi)一(yi)。與軋制(zhi)生產(chan)相比(bi)，擠(ji)壓法使金(jin)屬在變(bian)形過程中(zhong)受到三向壓應力。在最佳狀態下，不僅提高了(le)(le)變(bian)形抗力，而且提高了(le)(le)熱塑性(xing)差的(de)鋼管(guan)(guan)的(de)內外表面質量(liang)，更適合(he)生產(chan)多規格(ge)、小批量(liang)的(de)無縫不銹鋼管(guan)(guan)，如(ru)斜軋穿(chuan)孔(kong)機無法加(jia)(jia)工(gong)(gong)的(de)高合(he)金(jin)管(guan)(guan)材等。其工(gong)(gong)藝流程為：管(guan)(guan)坯(pi)剝皮-切斷(duan)-鉆孔(kong)-倒(dao)角-清洗坯(pi)料-加(jia)(jia)熱-擴孔(kong)-加(jia)(jia)熱-擠(ji)壓-矯直鋼管(guan)(guan)-噴丸-切除頭尾-酸洗-檢(jian)驗(yan)-包裝入庫。