無縫鋼管生產工藝：
①熱軋無縫鋼管主要(yao)生產(chan)工序(△主要(yao)檢(jian)驗工序)：
管(guan)(guan)坯準(zhun)備及檢(jian)(jian)(jian)查△→管(guan)(guan)坯加熱→穿孔(kong)→軋管(guan)(guan)→鋼管(guan)(guan)再加熱→定(ding)(減)徑→熱處理△→成(cheng)品管(guan)(guan)矯直(zhi)→精整→檢(jian)(jian)(jian)驗△(無損、理化、臺檢(jian)(jian)(jian)) →入庫
②冷軋(拔)無縫鋼管主要生產工序：
坯(pi)料準備(bei)→酸洗潤滑→冷軋(拔)→熱處理→矯直→精(jing)整(zheng)→檢驗
一(yi)般(ban)的無縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)的生產工藝可以分為(wei)冷(leng)拔(ba)與(yu)熱(re)(re)軋兩(liang)種，冷(leng)軋無縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)的生產流程一(yi)般(ban)要(yao)(yao)比(bi)熱(re)(re)軋要(yao)(yao)復雜(za)，管(guan)(guan)坯首先要(yao)(yao)進行三輥連軋，擠壓后(hou)(hou)要(yao)(yao)進行定徑(jing)測試，如果(guo)表(biao)面沒(mei)(mei)有(you)(you)響應裂(lie)紋后(hou)(hou)圓管(guan)(guan)要(yao)(yao)經過割機(ji)進行切割，切割成(cheng)長度約一(yi)米的坯料(liao)。然(ran)后(hou)(hou)進入(ru)退火流程，退火要(yao)(yao)用酸(suan)(suan)性液體進行酸(suan)(suan)洗(xi)，酸(suan)(suan)洗(xi)時(shi)要(yao)(yao)注意表(biao)面是否有(you)(you)大(da)量(liang)的起(qi)泡產生，如果(guo)有(you)(you)大(da)量(liang)的起(qi)泡產生說(shuo)明鋼(gang)(gang)(gang)管(guan)(guan)的質量(liang)達(da)不到相應的標準(zhun)。外觀上冷(leng)軋無縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)要(yao)(yao)短(duan)于(yu)熱(re)(re)軋無縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)，冷(leng)軋無縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)的壁(bi)厚一(yi)般(ban)比(bi)熱(re)(re)軋無縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)要(yao)(yao)小，但(dan)是表(biao)面看起(qi)來(lai)比(bi)厚壁(bi)無縫(feng)(feng)鋼(gang)(gang)(gang)管(guan)(guan)更加(jia)明亮，表(biao)面沒(mei)(mei)有(you)(you)太多的粗糙(cao)，口徑(jing)也沒(mei)(mei)有(you)(you)太多的毛(mao)刺。
無縫鋼管分類
沿其橫截面的(de)周邊上無接縫(feng)的(de)鋼管(guan)(guan)(guan)。根據生產方法不(bu)同分為(wei)熱軋(ya)管(guan)(guan)(guan)、冷軋(ya)管(guan)(guan)(guan)、冷拔管(guan)(guan)(guan)、擠壓管(guan)(guan)(guan)、頂管(guan)(guan)(guan)等(deng)，均有各自(zi)工藝規(gui)定。材質(zhi)有普通和(he)優(you)質(zhi)碳素結構鋼(Q215-A～Q275-A和(he)10～50號鋼)、低合(he)金鋼(09MnV、16Mn等(deng))、合(he)金鋼、不(bu)銹耐酸(suan)鋼等(deng)。按用(yong)(yong)(yong)途(tu)分為(wei)一般(ban)用(yong)(yong)(yong)途(tu)的(de)(用(yong)(yong)(yong)于(yu)輸水、氣管(guan)(guan)(guan)道和(he)結構件、機械零件)和(he)專用(yong)(yong)(yong)的(de)(用(yong)(yong)(yong)于(yu)鍋爐、地(di)質(zhi)勘探、軸承、耐酸(suan)等(deng))兩(liang)類。
