無縫鋼管生產工藝:
①熱軋無縫鋼管主要(yao)生產工序(△主要(yao)檢驗工序):
管(guan)坯準備及檢(jian)查△→管(guan)坯加(jia)(jia)熱(re)→穿孔→軋管(guan)→鋼管(guan)再加(jia)(jia)熱(re)→定(ding)(減(jian))徑→熱(re)處(chu)理△→成(cheng)品管(guan)矯直→精整→檢(jian)驗(yan)△(無損、理化、臺檢(jian)) →入(ru)庫
②冷軋(拔)無縫鋼管主要生產工序:
坯料準備→酸(suan)洗潤滑→冷軋(拔)→熱處理→矯直→精整(zheng)→檢(jian)驗
一般的(de)(de)(de)無(wu)縫(feng)(feng)鋼(gang)(gang)管(guan)(guan)的(de)(de)(de)生(sheng)產(chan)(chan)工藝(yi)可(ke)以分(fen)為冷(leng)(leng)拔(ba)與熱(re)(re)軋(ya)兩種(zhong),冷(leng)(leng)軋(ya)無(wu)縫(feng)(feng)鋼(gang)(gang)管(guan)(guan)的(de)(de)(de)生(sheng)產(chan)(chan)流程一般要(yao)(yao)(yao)比熱(re)(re)軋(ya)要(yao)(yao)(yao)復(fu)雜,管(guan)(guan)坯首先要(yao)(yao)(yao)進行(xing)三輥(gun)連(lian)軋(ya),擠壓后(hou)要(yao)(yao)(yao)進行(xing)定徑測試(shi),如果表(biao)(biao)面(mian)沒(mei)有(you)響應(ying)裂紋后(hou)圓管(guan)(guan)要(yao)(yao)(yao)經過割(ge)機進行(xing)切割(ge),切割(ge)成長(chang)度約一米的(de)(de)(de)坯料。然后(hou)進入(ru)退火(huo)流程,退火(huo)要(yao)(yao)(yao)用酸性液體進行(xing)酸洗,酸洗時要(yao)(yao)(yao)注(zhu)意表(biao)(biao)面(mian)是否有(you)大量的(de)(de)(de)起泡產(chan)(chan)生(sheng),如果有(you)大量的(de)(de)(de)起泡產(chan)(chan)生(sheng)說明(ming)鋼(gang)(gang)管(guan)(guan)的(de)(de)(de)質量達不到相應(ying)的(de)(de)(de)標準。外觀(guan)上冷(leng)(leng)軋(ya)無(wu)縫(feng)(feng)鋼(gang)(gang)管(guan)(guan)要(yao)(yao)(yao)短于熱(re)(re)軋(ya)無(wu)縫(feng)(feng)鋼(gang)(gang)管(guan)(guan),冷(leng)(leng)軋(ya)無(wu)縫(feng)(feng)鋼(gang)(gang)管(guan)(guan)的(de)(de)(de)壁厚(hou)一般比熱(re)(re)軋(ya)無(wu)縫(feng)(feng)鋼(gang)(gang)管(guan)(guan)要(yao)(yao)(yao)小,但(dan)是表(biao)(biao)面(mian)看(kan)起來(lai)比厚(hou)壁無(wu)縫(feng)(feng)鋼(gang)(gang)管(guan)(guan)更加明(ming)亮,表(biao)(biao)面(mian)沒(mei)有(you)太多的(de)(de)(de)粗(cu)糙,口徑也(ye)沒(mei)有(you)太多的(de)(de)(de)毛(mao)刺。
無縫鋼管分類
沿其橫截面的(de)周邊上無接縫的(de)鋼(gang)管(guan)。根據生產方(fang)法不同(tong)分(fen)為熱(re)軋(ya)管(guan)、冷軋(ya)管(guan)、冷拔管(guan)、擠壓管(guan)、頂(ding)管(guan)等,均(jun)有(you)各自工藝規定。材(cai)質有(you)普(pu)通和(he)(he)優質碳素(su)結(jie)構(gou)鋼(gang)(Q215-A~Q275-A和(he)(he)10~50號鋼(gang))、低合金鋼(gang)(09MnV、16Mn等)、合金鋼(gang)、不銹耐酸(suan)鋼(gang)等。按(an)用(yong)(yong)途分(fen)為一般(ban)用(yong)(yong)途的(de)(用(yong)(yong)于(yu)(yu)輸(shu)水、氣(qi)管(guan)道和(he)(he)結(jie)構(gou)件(jian)、機械零(ling)件(jian))和(he)(he)專用(yong)(yong)的(de)(用(yong)(yong)于(yu)(yu)鍋爐、地質勘探、軸承、耐酸(suan)等)兩(liang)類。