316L不(bu)(bu)銹鋼(gang)(gang)(gang)焊(han)管(guan)是(shi)(shi)一種(zhong)基本的(de)(de)(de)(de)管(guan)材(cai),所以它也有(you)良多硬(ying)(ying)(ying)(ying)性的(de)(de)(de)(de)必(bi)需的(de)(de)(de)(de)指(zhi)(zhi)標(biao),包括(kuo)良多方面,下面我們要講(jiang)的(de)(de)(de)(de)就是(shi)(shi)關于316L不(bu)(bu)銹鋼(gang)(gang)(gang)焊(han)管(guan)的(de)(de)(de)(de)硬(ying)(ying)(ying)(ying)度(du)指(zhi)(zhi)標(biao).根(gen)據試(shi)(shi)驗(yan)(yan)方法和合用范圍不(bu)(bu)同,硬(ying)(ying)(ying)(ying)度(du)又可(ke)分(fen)為布氏(shi)(shi)(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)度(du),洛氏(shi)(shi)(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)度(du),維(wei)氏(shi)(shi)(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)度(du),肖氏(shi)(shi)(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)度(du),顯微硬(ying)(ying)(ying)(ying)度(du)和高溫硬(ying)(ying)(ying)(ying)度(du)等.對(dui)(dui)于管(guan)材(cai)一般常用的(de)(de)(de)(de)有(you)布氏(shi)(shi)(shi)(shi)(shi),洛氏(shi)(shi)(shi)(shi)(shi),維(wei)氏(shi)(shi)(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)度(du)三種(zhong). A,布氏(shi)(shi)(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)度(du)(HB 用一定(ding)直徑(jing)(jing)(jing)的(de)(de)(de)(de)鋼(gang)(gang)(gang)球或硬(ying)(ying)(ying)(ying)質合金(jin)球,以劃定(ding)的(de)(de)(de)(de)試(shi)(shi)驗(yan)(yan)力(F)壓(ya)(ya)(ya)入(ru)式樣表(biao)面,經劃定(ding)保持時間后(hou)卸除試(shi)(shi)驗(yan)(yan)力,丈量試(shi)(shi)樣表(biao)面的(de)(de)(de)(de)壓(ya)(ya)(ya)痕(hen)直徑(jing)(jing)(jing)(L)布氏(shi)(shi)(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)度(du)值(zhi)是(shi)(shi)以試(shi)(shi)驗(yan)(yan)力除以壓(ya)(ya)(ya)痕(hen)球形表(biao)面積所得(de)的(de)(de)(de)(de)商.以HBS(鋼(gang)(gang)(gang)球)表(biao)示(shi),單位為N/mm2(MPa 其計算公(gong)式為 式中(zhong)(zhong):F--壓(ya)(ya)(ya)入(ru)316L不(bu)(bu)銹鋼(gang)(gang)(gang)焊(han)管(guan)試(shi)(shi)樣表(biao)面的(de)(de)(de)(de)試(shi)(shi)驗(yan)(yan)力,N, D--試(shi)(shi)驗(yan)(yan)用鋼(gang)(gang)(gang)球直徑(jing)(jing)(jing),mm d--壓(ya)(ya)(ya)痕(hen)均勻直徑(jing)(jing)(jing),mm. 測定(ding)布氏(shi)(shi)(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)度(du)較正確可(ke)靠(kao),但(dan)一般HBS只(zhi)合用于450N/mm2(MPa)以下的(de)(de)(de)(de)金(jin)屬材(cai)料,對(dui)(dui)于較硬(ying)(ying)(ying)(ying)的(de)(de)(de)(de)鋼(gang)(gang)(gang)或較薄的(de)(de)(de)(de)316L不(bu)(bu)銹鋼(gang)(gang)(gang)焊(han)管(guan)不(bu)(bu)合用.在316L不(bu)(bu)銹鋼(gang)(gang)(gang)焊(han)管(guan)尺度(du)中(zhong)(zhong),布氏(shi)(shi)(shi)(shi)(shi)硬(ying)(ying)(ying)(ying)度(du)用途最(zui)廣,往(wang)往(wang)以壓(ya)(ya)(ya)痕(hen)直徑(jing)(jing)(jing)d來表(biao)示(shi)該材(cai)料的(de)(de)(de)(de)硬(ying)(ying)(ying)(ying)度(du),既直觀(guan),又利便.
