無縫鋼管在鋼管中是很重要的一大類,在鋼管中占有重要的地位,很多的鋼管廠都生產無縫鋼管。就是(shi)因為(wei)無縫鋼(gang)管(guan)的(de)(de)(de)適用范圍廣,在很多的(de)(de)(de)地方有(you)著很多的(de)(de)(de)應用,碳鋼(gang)無縫鋼(gang)管(guan),這就是(shi)得(de)益于無縫鋼(gang)管(guan)有(you)著比(bi)較好的(de)(de)(de)力學(xue)性能,在各種場合(he)之下都能夠(gou)得(de)到運用。
無縫(feng)鋼(gang)管室溫力學性能(neng)(neng),優先采(cai)用橫向力學性能(neng)(neng)試驗(yan):
無(wu)縫鋼管縱向力學性能:抗(kang)拉(la)強(qiang)(qiang)度(du):410-550(Rm/MPa) 延(yan)伸強(qiang)(qiang)度(du):≥245(Rp0.2/MPa) 斷后伸長率(lv)≥24(A%)
無縫鋼管橫(heng)向力學性能:抗拉強度(du)(du):410-550(Rm/MPa) 延伸(shen)強度(du)(du):≥245(Rp0.2/MPa) 斷(duan)后伸(shen)長率≥22(A%)
熱軋無縫(feng)鋼(gang)(gang)管(guan)的生(sheng)產工藝流程包(bao)括(kuo)坯料軋前準(zhun)備、管(guan)坯加熱、穿(chuan)孔(kong)、軋制、定(ding)減(jian)徑(jing)、鋼(gang)(gang)管(guan)冷卻、鋼(gang)(gang)管(guan)切頭(tou)尾(wei)、分段、矯(jiao)直、探傷(shang)、人工檢查、噴標打印、打捆包(bao)裝等基(ji)本(ben)工序。當今(jin)熱軋無縫(feng)鋼(gang)(gang)管(guan)生(sheng)產一般主要(yao)變(bian)形工序有(you)三個:穿(chuan)孔(kong)、軋管(guan)和定(ding)減(jian)徑(jing),其各自(zi)的工藝目的和要(yao)求有(you):穿(chuan)孔(kong);軋管(guan);定(ding)減(jian)徑(jing)(包(bao)括(kuo)張減(jian))。
異(yi)型(xing)無(wu)縫(feng)鋼(gang)(gang)管(guan)(guan)(guan)(guan)異(yi)型(xing)無(wu)縫(feng)鋼(gang)(gang)管(guan)(guan)(guan)(guan)是除了圓管(guan)(guan)(guan)(guan)以(yi)外的其他截(jie)面形(xing)狀的無(wu)縫(feng)鋼(gang)(gang)管(guan)(guan)(guan)(guan)的總稱。按鋼(gang)(gang)管(guan)(guan)(guan)(guan)截(jie)面形(xing)狀尺寸的不(bu)同又可(ke)分為(wei)(wei)等壁厚(hou)異(yi)型(xing)無(wu)縫(feng)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(代號為(wei)(wei)D)、不(bu)等壁厚(hou)異(yi)型(xing)無(wu)縫(feng)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(代號為(wei)(wei)BD)、變(bian)直徑異(yi)型(xing)無(wu)縫(feng)鋼(gang)(gang)管(guan)(guan)(guan)(guan)(代號為(wei)(wei)BJ)。異(yi)型(xing)無(wu)縫(feng)鋼(gang)(gang)管(guan)(guan)(guan)(guan)廣泛用于各(ge)種結(jie)構件(jian)、工(gong)具和機械零部件(jian)。和圓管(guan)(guan)(guan)(guan)相(xiang)比,無(wu)縫(feng)鋼(gang)(gang)管(guan)(guan)(guan)(guan)供應(ying)商,異(yi)型(xing)管(guan)(guan)(guan)(guan)一般都有(you)較大(da)的慣(guan)性(xing)矩和截(jie)面模(mo)數(shu),有(you)較大(da)的抗彎抗扭(niu)能力,可(ke)以(yi)大(da)大(da)減(jian)輕結(jie)構重(zhong)量,節約鋼(gang)(gang)材。