一、無縫不銹鋼管的原材料是什么

無縫不銹鋼管的(de)原(yuan)材料主(zhu)要(yao)包括不銹鋼型號、化(hua)學成(cheng)分(fen)等。常(chang)用(yong)的(de)不銹鋼型號有 304、304L、316、316L 等，不同型號的(de)不銹鋼在化(hua)學成(cheng)分(fen)上(shang)略(lve)有差別。以下是常(chang)見不銹鋼的(de)化(hua)學成(cheng)分(fen)含量表(biao)：

二、無縫不銹鋼管制作流程介紹

1、熱軋無縫不銹鋼管

熱軋無縫(feng)管(guan)(guan)(guan)一(yi)般可分為中(zhong)、低(di)壓(ya)鍋爐鋼(gang)(gang)管(guan)(guan)(guan)、一(yi)般鋼(gang)(gang)管(guan)(guan)(guan)、高壓(ya)鍋爐鋼(gang)(gang)管(guan)(guan)(guan)、不銹鋼(gang)(gang)管(guan)(guan)(guan)、合(he)金(jin)鋼(gang)(gang)管(guan)(guan)(guan)等。其生產工藝為：檢查準備管(guan)(guan)(guan)坯-加熱管(guan)(guan)(guan)坯-穿孔-亞冠-荒管(guan)(guan)(guan)加熱-確(que)定直徑-熱處理-矯(jiao)直成品管(guan)(guan)(guan)-精整－檢驗(yan)-入庫。無縫(feng)鋼(gang)(gang)管(guan)(guan)(guan)的原料(liao)是圓管(guan)(guan)(guan)坯，需(xu)(xu)要通過切(qie)割(ge)機切(qie)割(ge)成長(chang)約1m皮料(liao)，通過傳動(dong)帶送入熔爐加熱，其高溫度約為1250攝氏度，解(jie)熱管(guan)(guan)(guan)中(zhong)的燃(ran)料(liao)大多是乙炔或氡。管(guan)(guan)(guan)胚出爐后，還需(xu)(xu)要穿孔，然后被連扎、三輥(gun)軋。定徑則是用錐形鉆頭高壓(ya)旋轉打孔鋼(gang)(gang)坯，形成鋼(gang)(gang)管(guan)(guan)(guan)。

2、冷加工無縫不銹鋼管

通(tong)(tong)常(chang)以(yi)冷(leng)軋(ya)為(wei)主(zhu)，冷(leng)拔為(wei)輔。約65%的無縫管(guan)需要通(tong)(tong)過冷(leng)加工(gong)(gong)制成(cheng)成(cheng)品，促進了冷(leng)加工(gong)(gong)工(gong)(gong)藝(yi)設(she)備的發展(zhan)。一般(ban)冷(leng)加工(gong)(gong)工(gong)(gong)藝(yi)有冷(leng)軋(ya)工(gong)(gong)藝(yi)、冷(leng)拔工(gong)(gong)藝(yi)和冷(leng)軋(ya)冷(leng)拔聯合工(gong)(gong)藝(yi)三種。國外更多采(cai)用(yong)冷(leng)拔冷(leng)軋(ya)聯合工(gong)(gong)藝(yi)生產(chan)無縫管(guan)。

冷加(jia)工(gong)(gong)冷拔(ba)生(sheng)(sheng)產(chan)無(wu)縫(feng)不銹鋼(gang)管(guan)(guan)的工(gong)(gong)藝(yi)流(liu)程為(wei)：外(wai)構(gou)管(guan)(guan)坯-切(qie)斷-加(jia)熱-穿孔-定尺截斷-錘(chui)頭(tou)-酸(suan)洗-潤滑-拔(ba)制-退火-切(qie)頭(tou)-水壓-檢查-成品。冷拔(ba)無(wu)縫(feng)不銹鋼(gang)管(guan)(guan)具(ju)有生(sheng)(sheng)產(chan)效(xiao)率(lv)高、規格變(bian)更(geng)方便、靈活性(xing)強(qiang)、設備和生(sheng)(sheng)產(chan)方法簡單等(deng)優點。但它存在(zai)道次變(bian)量小、生(sheng)(sheng)產(chan)加(jia)工(gong)(gong)時間長、金屬消耗較多、表面光潔度差等(deng)缺(que)陷。

冷(leng)(leng)加工冷(leng)(leng)軋(ya)生產無縫不(bu)銹鋼(gang)(gang)(gang)管(guan)的工藝流程為(wei)：煉鋼(gang)(gang)(gang)-圓鋼(gang)(gang)(gang)軋(ya)制-穿孔(kong)-冷(leng)(leng)拔-冷(leng)(leng)軋(ya)-退火(huo)光(guang)亮-拋(pao)光(guang)內表(biao)(biao)面(mian)-拋(pao)光(guang)外表(biao)(biao)面(mian)-驗(yan)收檢測-入庫包裝(zhuang)。冷(leng)(leng)軋(ya)工藝可(ke)以(yi)很好地改善無縫不(bu)銹鋼(gang)(gang)(gang)管(guan)表(biao)(biao)面(mian)質量，生產效(xiao)率較高。像(xiang)采用(yong)國內主流鋼(gang)(gang)(gang)廠(chang)原(yuan)料(liao)，通過冷(leng)(leng)拔和精軋(ya)，熱處(chu)理酸洗工藝，最(zui)后經過320目表(biao)(biao)面(mian)拋(pao)光(guang)，具有表(biao)(biao)面(mian)光(guang)潔度高，尺寸精密等特點，適用(yong)于高精度卡套連(lian)接(jie)應用(yong)管(guan)路系統。

3、熱擠壓無縫不銹鋼管

國(guo)外(wai)常用的(de)(de)熱(re)擠壓工(gong)(gong)藝是無(wu)縫(feng)不銹(xiu)鋼管的(de)(de)熱(re)加(jia)工(gong)(gong)生(sheng)(sheng)產(chan)工(gong)(gong)藝之一。與軋(ya)制生(sheng)(sheng)產(chan)相比，擠壓法使(shi)金屬在變(bian)形(xing)過程中(zhong)受(shou)到三向壓應力。在最佳(jia)狀態下，不僅提高了變(bian)形(xing)抗(kang)力，而(er)且提高了熱(re)塑性差的(de)(de)鋼管的(de)(de)內外(wai)表面質量，更適合生(sheng)(sheng)產(chan)多(duo)規格、小批量的(de)(de)無(wu)縫(feng)不銹(xiu)鋼管，如(ru)斜(xie)軋(ya)穿孔(kong)機無(wu)法加(jia)工(gong)(gong)的(de)(de)高合金管材等。其工(gong)(gong)藝流(liu)程為：管坯剝(bo)皮-切斷(duan)-鉆孔(kong)-倒角-清洗坯料-加(jia)熱(re)-擴孔(kong)-加(jia)熱(re)-擠壓-矯直(zhi)鋼管-噴(pen)丸-切除頭尾-酸洗-檢驗-包裝(zhuang)入庫。