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。就是因(yin)為無縫(feng)(feng)鋼管(guan)的(de)(de)適用(yong)范圍廣,在很(hen)多的(de)(de)地(di)方有(you)著(zhu)很(hen)多的(de)(de)應用(yong),碳鋼無縫(feng)(feng)鋼管(guan),這就是得(de)益于(yu)無縫(feng)(feng)鋼管(guan)有(you)著(zhu)比較好的(de)(de)力(li)學性(xing)能,在各種(zhong)場(chang)合之下(xia)都能夠得(de)到運用(yong)。
無縫鋼管室溫(wen)力(li)學性(xing)能(neng),優先采用橫向力(li)學性(xing)能(neng)試(shi)驗:
無縫鋼管縱向力學性能:抗拉強(qiang)度(du):410-550(Rm/MPa) 延伸(shen)(shen)強(qiang)度(du):≥245(Rp0.2/MPa) 斷(duan)后伸(shen)(shen)長(chang)率≥24(A%)
無縫鋼管橫向力學(xue)性能:抗拉強(qiang)度(du):410-550(Rm/MPa) 延(yan)伸強(qiang)度(du):≥245(Rp0.2/MPa) 斷后伸長(chang)率(lv)≥22(A%)
熱軋無縫鋼管(guan)(guan)的生產工藝流程包括坯料(liao)軋前準備(bei)、管(guan)(guan)坯加熱、穿(chuan)孔、軋制(zhi)、定(ding)減(jian)徑(jing)、鋼管(guan)(guan)冷卻、鋼管(guan)(guan)切頭尾、分段(duan)、矯直、探傷、人(ren)工檢(jian)查、噴標打印(yin)、打捆包裝等(deng)基本(ben)工序。當(dang)今熱軋無縫鋼管(guan)(guan)生產一(yi)般主要變形工序有(you)三個:穿(chuan)孔、軋管(guan)(guan)和定(ding)減(jian)徑(jing),其各自的工藝目的和要求有(you):穿(chuan)孔;軋管(guan)(guan);定(ding)減(jian)徑(jing)(包括張減(jian))。
異(yi)型無(wu)(wu)縫(feng)(feng)(feng)鋼管(guan)(guan)(guan)(guan)異(yi)型無(wu)(wu)縫(feng)(feng)(feng)鋼管(guan)(guan)(guan)(guan)是(shi)除了圓(yuan)管(guan)(guan)(guan)(guan)以外的(de)(de)(de)其他(ta)截(jie)面形(xing)狀(zhuang)的(de)(de)(de)無(wu)(wu)縫(feng)(feng)(feng)鋼管(guan)(guan)(guan)(guan)的(de)(de)(de)總稱(cheng)。按鋼管(guan)(guan)(guan)(guan)截(jie)面形(xing)狀(zhuang)尺(chi)寸(cun)的(de)(de)(de)不(bu)同又可(ke)分為(wei)(wei)等(deng)壁厚異(yi)型無(wu)(wu)縫(feng)(feng)(feng)鋼管(guan)(guan)(guan)(guan)(代號(hao)為(wei)(wei)D)、不(bu)等(deng)壁厚異(yi)型無(wu)(wu)縫(feng)(feng)(feng)鋼管(guan)(guan)(guan)(guan)(代號(hao)為(wei)(wei)BD)、變直(zhi)徑異(yi)型無(wu)(wu)縫(feng)(feng)(feng)鋼管(guan)(guan)(guan)(guan)(代號(hao)為(wei)(wei)BJ)。異(yi)型無(wu)(wu)縫(feng)(feng)(feng)鋼管(guan)(guan)(guan)(guan)廣泛用于(yu)各(ge)種結構件、工(gong)具(ju)和機械零(ling)部件。和圓(yuan)管(guan)(guan)(guan)(guan)相(xiang)比,無(wu)(wu)縫(feng)(feng)(feng)鋼管(guan)(guan)(guan)(guan)供應商,異(yi)型管(guan)(guan)(guan)(guan)一般都有較大的(de)(de)(de)慣性矩和截(jie)面模(mo)數,有較大的(de)(de)(de)抗彎抗扭能(neng)力(li),可(ke)以大大減輕結構重量,節約(yue)鋼材。