27simn無縫管熱銷貨源　　27simn無縫鋼管，即27硅錳合金無縫管，是鍍鋅鋼管的其中一種材料，含碳在0.24—0.32%中間，simn單排是由于是因為五大元素(碳C，硅Si，錳Mn，磷P，硫S)中，硅錳合金含量寬約為1.10—1.40%。 27simn無縫鋼管適用(yong)(yong)(yong)發電廠、鍋爐制造(zao)廠、化工廠，車、貨輪的(de)部件(jian)(jian)等(deng)(deng)。【關(guan)鍵特點(dian)】27simn無縫(feng)(feng)管(guan)(guan)(guan)(guan)性(xing)(xing)(xing)(xing)能(neng)好(hao)于30Mn2鋼(gang)，切削性(xing)(xing)(xing)(xing)能(neng)比(bi)較(jiao)高(gao)，水(shui)中(zhong)(zhong)臨(lin)界值(zhi)淬(cui)透(tou)孔徑(jing)達8～22mm，可(ke)車削性(xing)(xing)(xing)(xing)優良(liang)，冷變形可(ke)塑性(xing)(xing)(xing)(xing)及(ji)(ji)(ji)焊接性(xing)(xing)(xing)(xing)中(zhong)(zhong)等(deng)(deng)水(shui)平(ping);此(ci)外(wai)鋼(gang)在熱(re)處(chu)(chu)理(li)(li)(li)工藝(yi)時(shi)延展性(xing)(xing)(xing)(xing)降(jiang)低很少，但(dan)是(shi)(shi)卻有(you)非(fei)常高(gao)的(de)強(qiang)(qiang)度(du)(du)(du)(du)耐(nai)磨(mo)性(xing)(xing)(xing)(xing)能(neng)，尤其是(shi)(shi)水(shui)淬(cui)后仍有(you)很高(gao)的(de)延展性(xing)(xing)(xing)(xing);可(ke)是(shi)(shi)此(ci)鋼(gang)對(dui)小(xiao)(xiao)白(bai)點(dian)敏感(gan)(gan)度(du)(du)(du)(du)大(da)，熱(re)處(chu)(chu)理(li)(li)(li)工藝(yi)時(shi)會(hui)回火(huo)脆(cui)性(xing)(xing)(xing)(xing)趨向(xiang)及(ji)(ji)(ji)超溫敏感(gan)(gan)度(du)(du)(du)(du)。【運(yun)用(yong)(yong)(yong)舉例說(shuo)明】27simn無縫(feng)(feng)管(guan)(guan)(guan)(guan)主(zhu)要(yao)(yao)是(shi)(shi)在熱(re)處(chu)(chu)理(li)(li)(li)狀況下應用(yong)(yong)(yong)，用(yong)(yong)(yong)以生產制造(zao)規(gui)定高(gao)耐(nai)磨(mo)和(he)(he)耐(nai)磨(mo)性(xing)(xing)(xing)(xing)能(neng)熱(re)五金沖(chong)壓件(jian)(jian);還可(ke)在淬(cui)火(huo)或(huo)(huo)熱(re)扎供貨狀況下應用(yong)(yong)(yong)，如拖拉(la)(la)機的(de)履(lv)帶式銷(xiao)等(deng)(deng)。計算方(fang)法　　無縫(feng)(feng)拼接鋼(gang)管(guan)(guan)(guan)(guan)每(mei)(mei)米(mi)重量W=0.02466*S(D-S)符號意義 ：D=直徑(jing) S=厚(hou)度(du)(du)(du)(du)　　測算舉例說(shuo)明 ：直徑(jing)為60mm厚(hou)度(du)(du)(du)(du)4mm的(de)無縫(feng)(feng)管(guan)(guan)(guan)(guan)，求每(mei)(mei)m凈重。每(mei)(mei)m凈重=0.02466*4*(60-4)=5.52Kg　　物理(li)(li)(li)性(xing)(xing)(xing)(xing)能(neng)　　27simn無縫(feng)(feng)管(guan)(guan)(guan)(guan)物理(li)(li)(li)性(xing)(xing)(xing)(xing)能(neng)　　抗(kang)(kang)壓強(qiang)(qiang)度(du)(du)(du)(du) σb (MPa)：≥980　　抗(kang)(kang)拉(la)(la)強(qiang)(qiang)度(du)(du)(du)(du) σs (MPa)：≥835　　延伸(shen)(shen)率(lv)(lv) δ5/(%)：≥12　　斷(duan)面收縮率(lv)(lv) ψ/(%)：≥40　　沖(chong)擊(ji)吸收功 (沖(chong)擊(ji)值(zhi))(Aku2/J)：≥39　　力學(xue)(xue)性(xing)(xing)(xing)(xing)能(neng)試(shi)(shi)(shi)驗(yan)(yan)方(fang)式　　每(mei)(mei)一(yi)個無縫(feng)(feng)管(guan)(guan)(guan)(guan)需(xu)要(yao)(yao)進行力學(xue)(xue)性(xing)(xing)(xing)(xing)能(neng)測試(shi)(shi)(shi)。力學(xue)(xue)性(xing)(xing)(xing)(xing)能(neng)測試(shi)(shi)(shi)方(fang)式主(zhu)要(yao)(yao)分為兩大(da)類，一(yi)類是(shi)(shi)拉(la)(la)伸(shen)(shen)實(shi)驗(yan)(yan)，一(yi)類是(shi)(shi)硬(ying)度(du)(du)(du)(du)試(shi)(shi)(shi)驗(yan)(yan)。拉(la)(la)伸(shen)(shen)實(shi)驗(yan)(yan)是(shi)(shi)把(ba)無縫(feng)(feng)管(guan)(guan)(guan)(guan)做成(cheng)試(shi)(shi)(shi)件(jian)(jian)，在拉(la)(la)力試(shi)(shi)(shi)驗(yan)(yan)機上(shang)把(ba)試(shi)(shi)(shi)件(jian)(jian)拉(la)(la)至開裂，隨后測量一(yi)項(xiang)或(huo)(huo)幾(ji)種物理(li)(li)(li)性(xing)(xing)(xing)(xing)能(neng)，通常情(qing)況下僅測量抗(kang)(kang)壓強(qiang)(qiang)度(du)(du)(du)(du)、抗(kang)(kang)拉(la)(la)強(qiang)(qiang)度(du)(du)(du)(du)、斷(duan)后伸(shen)(shen)長率(lv)(lv)和(he)(he)斷(duan)面收縮率(lv)(lv)。硬(ying)度(du)(du)(du)(du)試(shi)(shi)(shi)驗(yan)(yan)是(shi)(shi)將(jiang)一(yi)個硬(ying)質的(de)拉(la)(la)力按照(zhao)規(gui)定標準遲緩(huan)壓進試(shi)(shi)(shi)件(jian)(jian)表(biao)層(ceng)、隨后檢(jian)測壓痕深度(du)(du)(du)(du)或(huo)(huo)規(gui)格，為此(ci)明確材料硬(ying)度(du)(du)(du)(du)大(da)小(xiao)(xiao)。可(ke)鉆削 性(xing)(xing)(xing)(xing)優良(liang)，冷變形可(ke)塑性(xing)(xing)(xing)(xing)及(ji)(ji)(ji)焊接性(xing)(xing)(xing)(xing)中(zhong)(zhong)等(deng)(deng)水(shui)平(ping);此(ci)外(wai)27simn無縫(feng)(feng)管(guan)(guan)(guan)(guan)在調質處(chu)(chu)理(li)(li)(li)時(shi)延展性(xing)(xing)(xing)(xing)降(jiang)低很少，但(dan)是(shi)(shi)卻有(you)非(fei)常高(gao)的(de)強(qiang)(qiang)度(du)(du)(du)(du)耐(nai)磨(mo)性(xing)(xing)(xing)(xing)能(neng)，尤其 是(shi)(shi)水(shui)淬(cui)后仍有(you)很高(gao)的(de)延展性(xing)(xing)(xing)(xing);可(ke)是(shi)(shi)此(ci)鋼(gang)對(dui)小(xiao)(xiao)白(bai)點(dian)敏感(gan)(gan)度(du)(du)(du)(du)大(da)，熱(re)處(chu)(chu)理(li)(li)(li)工藝(yi)時(shi)會(hui)回火(huo)脆(cui)性(xing)(xing)(xing)(xing)趨向(xiang)及(ji)(ji)(ji)超溫敏感(gan)(gan)度(du)(du)(du)(du)。無縫(feng)(feng)管(guan)(guan)(guan)(guan)低倍(bei)檢(jian)測常見問題　　27simn無縫(feng)(feng)管(guan)(guan)(guan)(guan)低倍(bei)檢(jian)測常見問題關(guan)鍵主(zhu)要(yao)(yao)有(you)以下幾(ji)個：1、表(biao)層(ceng)滲碳深度(du)(du)(du)(du)和(he)(he)水(shui)平(ping)。2、表(biao)層(ceng)冷軋缺陷的(de)尺寸(cun)和(he)(he)深層(ceng)、縮松、碳及(ji)(ji)(ji)硫的(de)中(zhong)(zhong)心(xin)偏析(xi)。3、無縫(feng)(feng)管(guan)(guan)(guan)(guan)鐵(tie)鏈體遍布情(qing)況、鐵(tie)素體遍布情(qing)況。4、別的(de)顯微組織缺點(dian)等(deng)(deng)，及(ji)(ji)(ji)其晶粒大(da)小(xiao)(xiao)、無縫(feng)(feng)鋼(gang)管(guan)(guan)(guan)(guan)表(biao)層(ceng)粗糙程度(du)(du)(du)(du)和(he)(he)夾雜物成(cheng)分等(deng)(deng)。