一、無縫不銹鋼管的原材料是什么

無縫不銹鋼管的原(yuan)材料主要包(bao)括不銹(xiu)鋼型號、化學(xue)成(cheng)(cheng)分等。常(chang)用的不銹(xiu)鋼型號有 304、304L、316、316L 等，不同型號的不銹(xiu)鋼在化學(xue)成(cheng)(cheng)分上略(lve)有差別(bie)。以下是常(chang)見不銹(xiu)鋼的化學(xue)成(cheng)(cheng)分含量表：

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)一般可分為(wei)(wei)中(zhong)、低壓鍋爐(lu)(lu)鋼(gang)管(guan)(guan)(guan)(guan)、一般鋼(gang)管(guan)(guan)(guan)(guan)、高壓鍋爐(lu)(lu)鋼(gang)管(guan)(guan)(guan)(guan)、不銹(xiu)鋼(gang)管(guan)(guan)(guan)(guan)、合金(jin)鋼(gang)管(guan)(guan)(guan)(guan)等。其(qi)生產工(gong)藝(yi)為(wei)(wei)：檢查準備管(guan)(guan)(guan)(guan)坯(pi)-加(jia)熱(re)管(guan)(guan)(guan)(guan)坯(pi)-穿(chuan)孔(kong)-亞冠(guan)-荒管(guan)(guan)(guan)(guan)加(jia)熱(re)-確定(ding)直(zhi)徑-熱(re)處理-矯直(zhi)成品管(guan)(guan)(guan)(guan)-精整－檢驗-入庫。無縫鋼(gang)管(guan)(guan)(guan)(guan)的原料是(shi)圓管(guan)(guan)(guan)(guan)坯(pi)，需(xu)(xu)要通(tong)過(guo)切割(ge)機切割(ge)成長約1m皮(pi)料，通(tong)過(guo)傳動帶送入熔爐(lu)(lu)加(jia)熱(re)，其(qi)高溫度約為(wei)(wei)1250攝氏度，解熱(re)管(guan)(guan)(guan)(guan)中(zhong)的燃料大多是(shi)乙(yi)炔或氡。管(guan)(guan)(guan)(guan)胚出爐(lu)(lu)后，還(huan)需(xu)(xu)要穿(chuan)孔(kong)，然后被(bei)連扎、三輥軋。定(ding)徑則(ze)是(shi)用錐形鉆頭高壓旋轉(zhuan)打孔(kong)鋼(gang)坯(pi)，形成鋼(gang)管(guan)(guan)(guan)(guan)。

2、冷加工無縫不銹鋼管

通常以冷(leng)軋(ya)(ya)為主，冷(leng)拔為輔。約65%的無縫管(guan)需要通過冷(leng)加工(gong)(gong)制成成品，促(cu)進(jin)了冷(leng)加工(gong)(gong)工(gong)(gong)藝設備(bei)的發展。一般(ban)冷(leng)加工(gong)(gong)工(gong)(gong)藝有(you)冷(leng)軋(ya)(ya)工(gong)(gong)藝、冷(leng)拔工(gong)(gong)藝和冷(leng)軋(ya)(ya)冷(leng)拔聯合(he)工(gong)(gong)藝三種。國外更多采用冷(leng)拔冷(leng)軋(ya)(ya)聯合(he)工(gong)(gong)藝生產無縫管(guan)。

冷(leng)加工冷(leng)拔生產(chan)無縫(feng)不(bu)(bu)銹(xiu)鋼管的工藝(yi)流程為：外(wai)構管坯(pi)-切(qie)斷(duan)-加熱-穿孔-定尺截斷(duan)-錘頭-酸洗(xi)-潤滑-拔制(zhi)-退火-切(qie)頭-水壓-檢查-成(cheng)品。冷(leng)拔無縫(feng)不(bu)(bu)銹(xiu)鋼管具有生產(chan)效率(lv)高、規格(ge)變更(geng)方(fang)(fang)便、靈(ling)活性(xing)強、設備和生產(chan)方(fang)(fang)法簡單等優點。但它存在道(dao)次變量(liang)小、生產(chan)加工時(shi)間長、金(jin)屬消耗(hao)較多、表面光潔(jie)度差等缺陷。

冷(leng)加工(gong)冷(leng)軋(ya)(ya)(ya)生產(chan)無縫(feng)不(bu)銹鋼管的工(gong)藝流程為：煉鋼-圓鋼軋(ya)(ya)(ya)制(zhi)-穿孔-冷(leng)拔-冷(leng)軋(ya)(ya)(ya)-退火光(guang)亮(liang)-拋(pao)光(guang)內表(biao)面(mian)(mian)-拋(pao)光(guang)外(wai)表(biao)面(mian)(mian)-驗收檢測-入庫包(bao)裝。冷(leng)軋(ya)(ya)(ya)工(gong)藝可(ke)以(yi)很好地改善(shan)無縫(feng)不(bu)銹鋼管表(biao)面(mian)(mian)質量，生產(chan)效率較高。像采用國內主(zhu)流鋼廠原料(liao)，通過冷(leng)拔和精軋(ya)(ya)(ya)，熱處理酸洗工(gong)藝，最(zui)后經過320目表(biao)面(mian)(mian)拋(pao)光(guang)，具有表(biao)面(mian)(mian)光(guang)潔度高，尺寸精密等特點，適用于高精度卡(ka)套連接應用管路系(xi)統(tong)。

3、熱擠壓無縫不銹鋼管

國外(wai)常用(yong)的熱(re)擠(ji)壓工藝是無(wu)縫(feng)不銹(xiu)鋼(gang)(gang)管(guan)的熱(re)加(jia)(jia)工生產工藝之一。與軋制生產相比，擠(ji)壓法使金屬在變形(xing)過程(cheng)(cheng)中受到(dao)三向壓應(ying)力(li)。在最佳狀態下(xia)，不僅提(ti)高了變形(xing)抗力(li)，而(er)且提(ti)高了熱(re)塑性差的鋼(gang)(gang)管(guan)的內外(wai)表面質量，更(geng)適(shi)合生產多規格、小批量的無(wu)縫(feng)不銹(xiu)鋼(gang)(gang)管(guan)，如斜軋穿(chuan)孔機無(wu)法加(jia)(jia)工的高合金管(guan)材等。其(qi)工藝流(liu)程(cheng)(cheng)為：管(guan)坯剝皮-切(qie)斷-鉆孔-倒角-清洗(xi)坯料-加(jia)(jia)熱(re)-擴孔-加(jia)(jia)熱(re)-擠(ji)壓-矯直鋼(gang)(gang)管(guan)-噴(pen)丸-切(qie)除頭尾-酸洗(xi)-檢(jian)驗-包裝入庫。