很多人都以為磁鐵吸附不銹鋼材,來驗證它的好壞真假,不吸無磁,認為是好的,否則,就認為是冒牌假貨,其實,這不是一種好的辨別方法,小編就來跟大家聊一聊。
我(wo)們依靠(kao)傳統(tong)方法來(lai)(lai)判別磁(ci)鐵(tie),很有可能吃(chi)虧。因為(wei)不銹(xiu)鋼(gang)種類繁多(duo),常(chang)溫下按(an)組織結(jie)構可分(fen)為(wei)奧氏(shi)(shi)(shi)體(ti)(ti)型(xing)和馬氏(shi)(shi)(shi)體(ti)(ti)或(huo)鐵(tie)素體(ti)(ti)型(xing),奧氏(shi)(shi)(shi)體(ti)(ti)型(xing)是(shi)無磁(ci)或(huo)弱磁(ci)性(xing)(xing),馬氏(shi)(shi)(shi)體(ti)(ti)或(huo)鐵(tie)素體(ti)(ti)型(xing)是(shi)有磁(ci)性(xing)(xing),但是(shi)也(ye)并不如是(shi)這樣,通常(chang)用作裝(zhuang)修管板的奧氏(shi)(shi)(shi)體(ti)(ti)型(xing),一般來(lai)(lai)講是(shi)無磁(ci)性(xing)(xing)的,但因冶煉造成(cheng)化學(xue)成(cheng)分(fen)波動或(huo)加工(gong)(gong)狀(zhuang)態不同(tong)也(ye)可能出現(xian)磁(ci)性(xing)(xing),這不能認為(wei)是(shi)冒牌(pai)或(huo)不合格,另外304不銹(xiu)鋼(gang)經過(guo)冷(leng)加工(gong)(gong),組織結(jie)構也(ye)會(hui)向馬氏(shi)(shi)(shi)轉化,冷(leng)加工(gong)(gong)變形度越(yue)大(da),馬氏(shi)(shi)(shi)體(ti)(ti)轉化越(yue)多(duo),鋼(gang)的磁(ci)性(xing)(xing)就越(yue)大(da)。