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電(dian)(dian)(dian)(dian)梯作為(wei)辦公、生活中(zhong)常(chang)用到的(de)垂直方(fang)向的(de)運輸工具，在(zai)高(gao)層樓房和公共場所已經成為(wei)不可或(huo)缺的(de)建筑配備。技(ji)術的(de)發(fa)展(zhan)及人民的(de)生活消費水平的(de)提升，也帶動了(le)電(dian)(dian)(dian)(dian)梯產(chan)業的(de)迅速發(fa)展(zhan)。2020年中(zhong)國(guo)電(dian)(dian)(dian)(dian)梯保(bao)有(you)(you)量(liang)800萬(wan)(wan)臺(tai)，占全球(qiu)(qiu)電(dian)(dian)(dian)(dian)梯保(bao)有(you)(you)量(liang)的(de)40％以(yi)上(shang)，2020年中(zhong)國(guo)電(dian)(dian)(dian)(dian)梯產(chan)量(liang)105萬(wan)(wan)噸(dun)，占全球(qiu)(qiu)電(dian)(dian)(dian)(dian)梯總產(chan)量(liang)的(de)70％以(yi)上(shang)。受全球(qiu)(qiu)疫情的(de)影響，2020年中(zhong)國(guo)電(dian)(dian)(dian)(dian)梯出口(kou)量(liang)大幅下降為(wei)7.5萬(wan)(wan)臺(tai)。

基于電梯行業需求，寶鋼自2007年開始，分別與國內知名電梯品牌廣州日立電梯、上海三菱電梯一道，聯合開發了電梯轎廂用超純鐵素體不(bu)銹鋼BX439和B443NT產品。前期三菱電梯對B443NT研磨拉絲面板開展了中性鹽霧、加速腐蝕試驗等耐蝕性評價及螺柱焊接、落料、沖孔、折邊等加工評價。評價結果表明，B443NT耐蝕性能與304相當，加工性能完全符合鈑金件流水線加工設備要求。

針對(dui)含(han)鈦(tai)超(chao)純鐵素體(ti)不(bu)(bu)銹(xiu)鋼(gang)(gang)BX439、B443NT不(bu)(bu)能(neng)用(yong)(yong)于(yu)(yu)磨拋鏡(jing)面(mian)(mian)(mian)(mian)電(dian)(dian)梯(ti)(ti)(ti)(ti)板的(de)(de)問(wen)題(ti)，2014年寶(bao)(bao)(bao)鋼(gang)(gang)與(yu)中科院沈陽金(jin)屬(shu)所、三菱(ling)(ling)電(dian)(dian)梯(ti)(ti)(ti)(ti)一道，開展了(le)(le)(le)(le)中信-CBMM-寶(bao)(bao)(bao)鋼(gang)(gang)技術(shu)合作項目“電(dian)(dian)梯(ti)(ti)(ti)(ti)用(yong)(yong)高(gao)等級(ji)表(biao)(biao)面(mian)(mian)(mian)(mian)含(han)鈮鐵素體(ti)不(bu)(bu)銹(xiu)鋼(gang)(gang)開發(fa)(fa)及(ji)關鍵技術(shu)研(yan)究”，聯合開發(fa)(fa)了(le)(le)(le)(le)可用(yong)(yong)于(yu)(yu)研(yan)磨8K的(de)(de)超(chao)純鐵素體(ti)不(bu)(bu)銹(xiu)鋼(gang)(gang)B443Nb。上(shang)海(hai)三菱(ling)(ling)電(dian)(dian)梯(ti)(ti)(ti)(ti)于(yu)(yu)2016年開始對(dui)寶(bao)(bao)(bao)鋼(gang)(gang)試(shi)(shi)制(zhi)(zhi)B443Nb樣(yang)(yang)板（BA大板）開展了(le)(le)(le)(le)鋼(gang)(gang)板研(yan)磨、耐(nai)蝕性(xing)能(neng)和加(jia)工(gong)性(xing)能(neng)測試(shi)(shi)。鏡(jing)面(mian)(mian)(mian)(mian)研(yan)磨加(jia)工(gong)結果(guo)顯示，B443Nb與(yu)304的(de)(de)鏡(jing)面(mian)(mian)(mian)(mian)板外觀效(xiao)果(guo)基本一致，表(biao)(biao)明(ming)B443Nb對(dui)高(gao)質(zhi)(zhi)量(liang)表(biao)(biao)面(mian)(mian)(mian)(mian)加(jia)工(gong)的(de)(de)適應性(xing)達到了(le)(le)(le)(le)預期(qi)的(de)(de)效(xiao)果(guo)；循環鹽霧測試(shi)(shi)表(biao)(biao)明(ming)，B443Nb 8K樣(yang)(yang)品(pin)耐(nai)蝕性(xing)好(hao)于(yu)(yu)SUS304 發(fa)(fa)紋(wen)，與(yu)SUS3048K鏡(jing)面(mian)(mian)(mian)(mian)接近；加(jia)工(gong)性(xing)能(neng)方面(mian)(mian)(mian)(mian)，在(zai)鈑金(jin)件流水(shui)線上(shang)進(jin)行了(le)(le)(le)(le)制(zhi)(zhi)作電(dian)(dian)梯(ti)(ti)(ti)(ti)轎(jiao)廂(xiang)(xiang)壁的(de)(de)落料(liao)、沖孔、折邊等常規加(jia)工(gong)，并對(dui)小樣(yang)(yang)進(jin)行了(le)(le)(le)(le)激光切(qie)割，結果(guo)表(biao)(biao)明(ming)加(jia)工(gong)性(xing)能(neng)完全符合鈑金(jin)件流水(shui)線加(jia)工(gong)設備要求。在(zai)鋼(gang)(gang)板測試(shi)(shi)結果(guo)全面(mian)(mian)(mian)(mian)滿(man)足性(xing)能(neng)要求的(de)(de)基礎上(shang)，試(shi)(shi)制(zhi)(zhi)了(le)(le)(le)(le)兩個(ge)電(dian)(dian)梯(ti)(ti)(ti)(ti)轎(jiao)廂(xiang)(xiang)，分別考(kao)察了(le)(le)(le)(le)鏡(jing)面(mian)(mian)(mian)(mian)、鏡(jing)面(mian)(mian)(mian)(mian)鍍(du)鈦(tai)、鏡(jing)面(mian)(mian)(mian)(mian)蝕刻(ke)鍍(du)鈦(tai)、和紋(wen)鍍(du)鈦(tai)4種表(biao)(biao)面(mian)(mian)(mian)(mian)處(chu)理(li)，以及(ji)鏡(jing)面(mian)(mian)(mian)(mian)、和紋(wen)鍍(du)鈦(tai)、和紋(wen)蝕刻(ke)鍍(du)鈦(tai)、砂紋(wen)鍍(du)鈦(tai)4種表(biao)(biao)面(mian)(mian)(mian)(mian)處(chu)理(li)。從表(biao)(biao)面(mian)(mian)(mian)(mian)質(zhi)(zhi)量(liang)上(shang)看，試(shi)(shi)制(zhi)(zhi)的(de)(de)轎(jiao)廂(xiang)(xiang)已基本覆蓋了(le)(le)(le)(le)上(shang)海(hai)三菱(ling)(ling)電(dian)(dian)梯(ti)(ti)(ti)(ti)常用(yong)(yong)的(de)(de)不(bu)(bu)銹(xiu)鋼(gang)(gang)表(biao)(biao)面(mian)(mian)(mian)(mian)處(chu)理(li)種類，且壁板表(biao)(biao)面(mian)(mian)(mian)(mian)質(zhi)(zhi)量(liang)令人滿(man)意。該(gai)產品(pin)的(de)(de)成功開發(fa)(fa)，填補了(le)(le)(le)(le)電(dian)(dian)梯(ti)(ti)(ti)(ti)鏡(jing)面(mian)(mian)(mian)(mian)板用(yong)(yong)超(chao)純鐵素體(ti)不(bu)(bu)銹(xiu)鋼(gang)(gang)產品(pin)的(de)(de)空白，促進(jin)了(le)(le)(le)(le)寶(bao)(bao)(bao)鋼(gang)(gang)超(chao)純鐵素體(ti)不(bu)(bu)銹(xiu)鋼(gang)(gang)在(zai)超(chao)低碳氮冶煉、純凈化冶煉、熱軋(ya)輥(gun)跡(ji)表(biao)(biao)面(mian)(mian)(mian)(mian)缺(que)陷控(kong)制(zhi)(zhi)等關鍵技術(shu)的(de)(de)提升。

寶鋼生產的電梯面板用超純鐵素體不銹鋼產品耐蝕性與奧氏體不銹鋼304相當，價格比304不(bu)銹鋼(gang)更低，且價格穩定，深受電梯行業歡迎。三菱電梯對B443NT及B443Nb 鐵素體不銹鋼需求量占其不銹鋼用量的70％～75％，2014～2018年累計采購5.7萬多噸，比奧氏體不銹鋼304節省成本10619萬元。同時，節約貴重鎳金屬資源4500余噸。

酒鋼建(jian)筑(zhu)裝(zhuang)飾用超純鐵素體材料在西奧、迅達(da)、三菱(ling)、日(ri)立電梯得到(dao)應用。