一、無縫不銹鋼管的原材料是什么

無縫不銹鋼管的原材料主(zhu)要(yao)包括不(bu)(bu)銹鋼型(xing)號、化學(xue)成(cheng)(cheng)分(fen)等。常用的不(bu)(bu)銹鋼型(xing)號有(you)(you) 304、304L、316、316L 等，不(bu)(bu)同型(xing)號的不(bu)(bu)銹鋼在化學(xue)成(cheng)(cheng)分(fen)上略(lve)有(you)(you)差別。以下是(shi)常見(jian)不(bu)(bu)銹鋼的化學(xue)成(cheng)(cheng)分(fen)含量表：

二、無縫不銹鋼管制作流程介紹

1、熱軋無縫不銹鋼管

熱(re)軋無縫管(guan)(guan)(guan)(guan)一般(ban)可分為(wei)中、低壓鍋爐鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)、一般(ban)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)、高(gao)壓鍋爐鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)、不(bu)銹(xiu)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)、合金鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)等。其(qi)生產工藝為(wei)：檢查(cha)準備(bei)管(guan)(guan)(guan)(guan)坯(pi)-加熱(re)管(guan)(guan)(guan)(guan)坯(pi)-穿(chuan)孔-亞冠-荒管(guan)(guan)(guan)(guan)加熱(re)-確定(ding)直(zhi)徑-熱(re)處理-矯(jiao)直(zhi)成(cheng)品(pin)管(guan)(guan)(guan)(guan)-精整－檢驗-入(ru)庫。無縫鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)的(de)(de)原料(liao)是圓管(guan)(guan)(guan)(guan)坯(pi)，需要通過切割(ge)(ge)機切割(ge)(ge)成(cheng)長約(yue)1m皮料(liao)，通過傳(chuan)動帶送入(ru)熔(rong)爐加熱(re)，其(qi)高(gao)溫(wen)度約(yue)為(wei)1250攝(she)氏(shi)度，解熱(re)管(guan)(guan)(guan)(guan)中的(de)(de)燃料(liao)大(da)多是乙炔或氡。管(guan)(guan)(guan)(guan)胚出爐后(hou)，還需要穿(chuan)孔，然(ran)后(hou)被(bei)連扎、三輥軋。定(ding)徑則是用錐形鉆頭高(gao)壓旋(xuan)轉打孔鋼(gang)(gang)(gang)坯(pi)，形成(cheng)鋼(gang)(gang)(gang)管(guan)(guan)(guan)(guan)。

2、冷加工無縫不銹鋼管

通常(chang)以(yi)冷(leng)(leng)軋(ya)為主，冷(leng)(leng)拔為輔(fu)。約65%的(de)無縫管需要(yao)通過(guo)冷(leng)(leng)加工(gong)(gong)(gong)(gong)制成成品(pin)，促進了(le)冷(leng)(leng)加工(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)藝(yi)設備的(de)發展。一般冷(leng)(leng)加工(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)藝(yi)有冷(leng)(leng)軋(ya)工(gong)(gong)(gong)(gong)藝(yi)、冷(leng)(leng)拔工(gong)(gong)(gong)(gong)藝(yi)和冷(leng)(leng)軋(ya)冷(leng)(leng)拔聯(lian)合工(gong)(gong)(gong)(gong)藝(yi)三種。國(guo)外(wai)更多(duo)采用冷(leng)(leng)拔冷(leng)(leng)軋(ya)聯(lian)合工(gong)(gong)(gong)(gong)藝(yi)生產無縫管。

冷加工冷拔(ba)生產(chan)無(wu)縫(feng)不銹鋼管(guan)的工藝流程(cheng)為：外構(gou)管(guan)坯(pi)-切斷-加熱-穿孔-定尺截(jie)斷-錘頭-酸(suan)洗-潤滑(hua)-拔(ba)制-退火-切頭-水壓-檢查(cha)-成品。冷拔(ba)無(wu)縫(feng)不銹鋼管(guan)具有生產(chan)效(xiao)率(lv)高、規(gui)格變更方(fang)便、靈(ling)活性強、設備和生產(chan)方(fang)法簡單等優(you)點。但(dan)它存在道次變量(liang)小、生產(chan)加工時間長、金屬消耗(hao)較多、表(biao)面(mian)光(guang)潔度(du)差等缺陷。

冷加(jia)工(gong)冷軋(ya)生產無(wu)縫不(bu)銹(xiu)鋼(gang)(gang)管(guan)的工(gong)藝流程為：煉(lian)鋼(gang)(gang)-圓(yuan)鋼(gang)(gang)軋(ya)制(zhi)-穿孔-冷拔-冷軋(ya)-退火光亮-拋(pao)光內(nei)表(biao)(biao)(biao)面(mian)-拋(pao)光外(wai)表(biao)(biao)(biao)面(mian)-驗收檢測-入庫包(bao)裝。冷軋(ya)工(gong)藝可(ke)以很好地改善(shan)無(wu)縫不(bu)銹(xiu)鋼(gang)(gang)管(guan)表(biao)(biao)(biao)面(mian)質(zhi)量，生產效(xiao)率(lv)較高。像采(cai)用國內(nei)主流鋼(gang)(gang)廠(chang)原(yuan)料，通過冷拔和精軋(ya)，熱處(chu)理酸洗工(gong)藝，最后(hou)經過320目(mu)表(biao)(biao)(biao)面(mian)拋(pao)光，具有表(biao)(biao)(biao)面(mian)光潔度(du)高，尺寸(cun)精密等特點，適用于(yu)高精度(du)卡套連接應用管(guan)路系統。

3、熱擠壓無縫不銹鋼管

國外常用的熱擠壓工(gong)藝是無(wu)縫不銹(xiu)(xiu)鋼管(guan)(guan)的熱加(jia)工(gong)生產工(gong)藝之一(yi)。與軋(ya)制生產相比，擠壓法(fa)使金屬在(zai)變(bian)形過(guo)程(cheng)中受到三向壓應力(li)。在(zai)最佳(jia)狀(zhuang)態(tai)下，不僅(jin)提(ti)高了(le)變(bian)形抗力(li)，而且(qie)提(ti)高了(le)熱塑性(xing)差的鋼管(guan)(guan)的內外表面質(zhi)量，更(geng)適合生產多規格、小(xiao)批量的無(wu)縫不銹(xiu)(xiu)鋼管(guan)(guan)，如斜軋(ya)穿(chuan)孔(kong)機(ji)無(wu)法(fa)加(jia)工(gong)的高合金管(guan)(guan)材等。其(qi)工(gong)藝流程(cheng)為：管(guan)(guan)坯(pi)剝皮-切(qie)(qie)斷-鉆孔(kong)-倒角-清洗坯(pi)料-加(jia)熱-擴孔(kong)-加(jia)熱-擠壓-矯直(zhi)鋼管(guan)(guan)-噴丸(wan)-切(qie)(qie)除頭(tou)尾(wei)-酸洗-檢驗-包裝入庫(ku)。