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不銹鋼管廠家對于不銹鋼管的硬度分類\

 n不(bu)(bu)(bu)銹(xiu)(xiu)(xiu)(xiu)鋼(gang)(gang)(gang)(gang)管(guan)的(de)(de)(de)(de)硬(ying)(ying)(ying)(ying)度(du)(du)(du)(du)(du)(du)(du)(du)大致分為(wei)布氏(shi)(shi)(shi)(shi),洛(luo)氏(shi)(shi)(shi)(shi)和維(wei)氏(shi)(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)度(du)(du)(du)(du)(du)(du)(du)(du)三種,大多數(shu)(shu)(shu)不(bu)(bu)(bu)銹(xiu)(xiu)(xiu)(xiu)鋼(gang)(gang)(gang)(gang)管(guan)廠家都(dou)是根據這三種硬(ying)(ying)(ying)(ying)度(du)(du)(du)(du)(du)(du)(du)(du)方法(fa)(fa)(fa)對不(bu)(bu)(bu)銹(xiu)(xiu)(xiu)(xiu)鋼(gang)(gang)(gang)(gang)管(guan)進行(xing)分類。 \ n \ n1,布氏(shi)(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)度(du)(du)(du)(du)(du)(du)(du)(du)\ n \ n在不(bu)(bu)(bu)銹(xiu)(xiu)(xiu)(xiu)鋼(gang)(gang)(gang)(gang)管(guan)規格(ge)中,廣泛(fan)使用(yong)布氏(shi)(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)度(du)(du)(du)(du)(du)(du)(du)(du),數(shu)(shu)(shu)據的(de)(de)(de)(de)硬(ying)(ying)(ying)(ying)度(du)(du)(du)(du)(du)(du)(du)(du)通(tong)常用(yong)壓(ya)痕(hen)(hen)直徑表示,既直觀又方便。但(dan)是,它(ta)不(bu)(bu)(bu)適用(yong)于(yu)較(jiao)硬(ying)(ying)(ying)(ying)或較(jiao)薄(bo)鋼(gang)(gang)(gang)(gang)的(de)(de)(de)(de)鋼(gang)(gang)(gang)(gang)管(guan)。 \ n \ n2,洛(luo)氏(shi)(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)度(du)(du)(du)(du)(du)(du)(du)(du)\ n \ n不(bu)(bu)(bu)銹(xiu)(xiu)(xiu)(xiu)鋼(gang)(gang)(gang)(gang)管(guan)洛(luo)氏(shi)(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)度(du)(du)(du)(du)(du)(du)(du)(du)測試(shi)與(yu)布氏(shi)(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)度(du)(du)(du)(du)(du)(du)(du)(du)測試(shi)相同。不(bu)(bu)(bu)同之(zhi)處在于(yu)它(ta)測量了(le)壓(ya)痕(hen)(hen)的(de)(de)(de)(de)深度(du)(du)(du)(du)(du)(du)(du)(du)。現在廣泛(fan)使用(yong)洛(luo)氏(shi)(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)度(du)(du)(du)(du)(du)(du)(du)(du)測試(shi),其(qi)中HRC僅在布氏(shi)(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)度(du)(du)(du)(du)(du)(du)(du)(du)HB之(zhi)后用(yong)于(yu)鋼(gang)(gang)(gang)(gang)管(guan)規格(ge)。硬(ying)(ying)(ying)(ying)度(du)(du)(du)(du)(du)(du)(du)(du)洛(luo)氏(shi)(shi)(shi)(shi)可(ke)用(yong)于(yu)確定(ding)從非(fei)常軟(ruan)到非(fei)常硬(ying)(ying)(ying)(ying)的(de)(de)(de)(de)金(jin)屬(shu)數(shu)(shu)(shu)據。它(ta)補(bu)償(chang)了(le)布氏(shi)(shi)(shi)(shi)方法(fa)(fa)(fa)。它(ta)比布氏(shi)(shi)(shi)(shi)方法(fa)(fa)(fa)簡單,可(ke)以直接從硬(ying)(ying)(ying)(ying)度(du)(du)(du)(du)(du)(du)(du)(du)計的(de)(de)(de)(de)表盤讀取硬(ying)(ying)(ying)(ying)度(du)(du)(du)(du)(du)(du)(du)(du)值。但(dan)是,由于(yu)壓(ya)痕(hen)(hen)很小,硬(ying)(ying)(ying)(ying)度(du)(du)(du)(du)(du)(du)(du)(du)值不(bu)(bu)(bu)如布氏(shi)(shi)(shi)(shi)方法(fa)(fa)(fa)好。 \ n \ n 3,維(wei)氏(shi)(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)度(du)(du)(du)(du)(du)(du)(du)(du)\ n \ n不(bu)(bu)(bu)銹(xiu)(xiu)(xiu)(xiu)鋼(gang)(gang)(gang)(gang)管(guan)維(wei)氏(shi)(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)度(du)(du)(du)(du)(du)(du)(du)(du)測試(shi)也是一種壓(ya)痕(hen)(hen)測試(shi)方法(fa)(fa)(fa),可(ke)用(yong)于(yu)測定(ding)非(fei)常薄(bo)的(de)(de)(de)(de)金(jin)屬(shu)數(shu)(shu)(shu)據和外層硬(ying)(ying)(ying)(ying)度(du)(du)(du)(du)(du)(du)(du)(du)。它(ta)具有布氏(shi)(shi)(shi)(shi)和洛(luo)氏(shi)(shi)(shi)(shi)方法(fa)(fa)(fa)的(de)(de)(de)(de)主要優勢,克服了(le)它(ta)們的(de)(de)(de)(de)基(ji)本缺陷,但(dan)并(bing)不(bu)(bu)(bu)像洛(luo)氏(shi)(shi)(shi)(shi)方法(fa)(fa)(fa)那么簡單,后者(zhe)很少(shao)用(yong)于(yu)鋼(gang)(gang)(gang)(gang)管(guan)規范。 \ n \ n304不(bu)(bu)(bu)銹(xiu)(xiu)(xiu)(xiu)鋼(gang)(gang)(gang)(gang)管(guan)倉庫放養\ n \ n不(bu)(bu)(bu)銹(xiu)(xiu)(xiu)(xiu)鋼(gang)(gang)(gang)(gang)管(guan)硬(ying)(ying)(ying)(ying)度(du)(du)(du)(du)(du)(du)(du)(du)試(shi)驗(yan)方法(fa)(fa)(fa)不(bu)(bu)(bu)銹(xiu)(xiu)(xiu)(xiu)鋼(gang)(gang)(gang)(gang)的(de)(de)(de)(de)硬(ying)(ying)(ying)(ying)度(du)(du)(du)(du)(du)(du)(du)(du)試(shi)驗(yan)應(ying)考慮其(qi)機(ji)(ji)械(xie)性能,這與(yu)變(bian)形,沖壓(ya),切割等加工的(de)(de)(de)(de)功能和質量有關。由不(bu)(bu)(bu)銹(xiu)(xiu)(xiu)(xiu)鋼(gang)(gang)(gang)(gang)制成。因此,對所有不(bu)(bu)(bu)銹(xiu)(xiu)(xiu)(xiu)鋼(gang)(gang)(gang)(gang)管(guan)進行(xing)機(ji)(ji)械(xie)功能測試(shi)。 \ n \ n機(ji)(ji)械(xie)功能測試(shi)方法(fa)(fa)(fa)分為(wei)兩類,一類是拉伸試(shi)驗(yan),另一類是硬(ying)(ying)(ying)(ying)度(du)(du)(du)(du)(du)(du)(du)(du)試(shi)驗(yan)。

\ n \ n拉(la)(la)伸(shen)(shen)(shen)試(shi)(shi)(shi)驗(yan)是(shi)(shi)(shi)將(jiang)不(bu)(bu)銹(xiu)鋼管制成(cheng)試(shi)(shi)(shi)樣,拉(la)(la)伸(shen)(shen)(shen)試(shi)(shi)(shi)樣在(zai)拉(la)(la)伸(shen)(shen)(shen)試(shi)(shi)(shi)驗(yan)機(ji)(ji)上開裂,然(ran)后測(ce)(ce)(ce)量一(yi)個(ge)或(huo)(huo)幾個(ge)機(ji)(ji)械(xie)功(gong)能,一(yi)般(ban)只測(ce)(ce)(ce)量拉(la)(la)伸(shen)(shen)(shen)強度(du)(du)(du)(du)(du),屈(qu)服強度(du)(du)(du)(du)(du),斷(duan)(duan)裂后伸(shen)(shen)(shen)長(chang)率和面(mian)積縮小(xiao)。不(bu)(bu)銹(xiu)鋼管制造商的(de)(de)(de)(de)拉(la)(la)伸(shen)(shen)(shen)試(shi)(shi)(shi)驗(yan)是(shi)(shi)(shi)金屬材料(liao)(liao)的(de)(de)(de)(de)基本機(ji)(ji)械(xie)功(gong)能試(shi)(shi)(shi)驗(yan)方法。對(dui)于(yu)(yu)所(suo)有(you)(you)金屬材料(liao)(liao),只要需要機(ji)(ji)械(xie)功(gong)能,就可以進行(xing)拉(la)(la)伸(shen)(shen)(shen)試(shi)(shi)(shi)驗(yan)。特別是(shi)(shi)(shi)對(dui)于(yu)(yu)形(xing)狀不(bu)(bu)便(bian)于(yu)(yu)硬(ying)度(du)(du)(du)(du)(du)測(ce)(ce)(ce)試(shi)(shi)(shi)的(de)(de)(de)(de)那(nei)些材料(liao)(liao),拉(la)(la)伸(shen)(shen)(shen)試(shi)(shi)(shi)驗(yan)成(cheng)為(wei)機(ji)(ji)械(xie)功(gong)能檢測(ce)(ce)(ce)方法。硬(ying)度(du)(du)(du)(du)(du)測(ce)(ce)(ce)試(shi)(shi)(shi)是(shi)(shi)(shi)根據(ju)(ju)(ju)常規條件(jian)將(jiang)硬(ying)壓頭緩慢壓入樣品(pin)的(de)(de)(de)(de)外觀,然(ran)后測(ce)(ce)(ce)試(shi)(shi)(shi)壓痕的(de)(de)(de)(de)深度(du)(du)(du)(du)(du)或(huo)(huo)大小(xiao)以確(que)定數(shu)(shu)據(ju)(ju)(ju)的(de)(de)(de)(de)硬(ying)度(du)(du)(du)(du)(du)。硬(ying)度(du)(du)(du)(du)(du)測(ce)(ce)(ce)試(shi)(shi)(shi)是(shi)(shi)(shi)一(yi)種簡單,靈活且(qie)易(yi)于(yu)(yu)實現的(de)(de)(de)(de)數(shu)(shu)據(ju)(ju)(ju)力(li)學函數(shu)(shu)實驗(yan)方法。硬(ying)度(du)(du)(du)(du)(du)測(ce)(ce)(ce)試(shi)(shi)(shi)具有(you)(you)數(shu)(shu)據(ju)(ju)(ju)硬(ying)度(du)(du)(du)(du)(du)值(zhi)(zhi)(zhi)和拉(la)(la)伸(shen)(shen)(shen)強度(du)(du)(du)(du)(du)值(zhi)(zhi)(zhi)之間的(de)(de)(de)(de)近似轉(zhuan)換(huan)關(guan)系。數(shu)(shu)據(ju)(ju)(ju)的(de)(de)(de)(de)硬(ying)度(du)(du)(du)(du)(du)值(zhi)(zhi)(zhi)可以轉(zhuan)換(huan)成(cheng)拉(la)(la)伸(shen)(shen)(shen)強度(du)(du)(du)(du)(du)值(zhi)(zhi)(zhi),這(zhe)是(shi)(shi)(shi)非(fei)常有(you)(you)用的(de)(de)(de)(de)。 \ n \ n由(you)于(yu)(yu)拉(la)(la)伸(shen)(shen)(shen)試(shi)(shi)(shi)驗(yan)不(bu)(bu)方便(bian)進行(xing)試(shi)(shi)(shi)驗(yan),而且(qie)硬(ying)度(du)(du)(du)(du)(du)轉(zhuan)換(huan)為(wei)強度(du)(du)(du)(du)(du)非(fei)常方便(bian),因(yin)此人們越(yue)來越(yue)多地只測(ce)(ce)(ce)試(shi)(shi)(shi)數(shu)(shu)據(ju)(ju)(ju)的(de)(de)(de)(de)硬(ying)度(du)(du)(du)(du)(du)而少測(ce)(ce)(ce)試(shi)(shi)(shi)其強度(du)(du)(du)(du)(du)。特別是(shi)(shi)(shi)由(you)于(yu)(yu)硬(ying)度(du)(du)(du)(du)(du)計制造技術的(de)(de)(de)(de)不(bu)(bu)斷(duan)(duan)改進和創(chuang)新,一(yi)些不(bu)(bu)能直(zhi)接測(ce)(ce)(ce)試(shi)(shi)(shi)硬(ying)度(du)(du)(du)(du)(du)的(de)(de)(de)(de)材料(liao)(liao),如不(bu)(bu)銹(xiu)鋼管,不(bu)(bu)銹(xiu)鋼板和不(bu)(bu)銹(xiu)鋼帶(dai),現在(zai)可以直(zhi)接測(ce)(ce)(ce)試(shi)(shi)(shi)硬(ying)度(du)(du)(du)(du)(du)。


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