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2017年8月31日，由中國一重承制(zhi)的(de)全球首臺“華龍(long)一號”—福(fu)清5號主泵(beng)泵(beng)殼在大連核電(dian)石化公(gong)司(si)完成(cheng)制(zhi)造。該(gai)產品的(de)成(cheng)功交(jiao)付，使我(wo)國核電(dian)裝備國產化制(zhi)造能(neng)力實(shi)現了新(xin)的(de)跨越(yue)，制(zhi)造技術(shu)實(shi)現了新(xin)的(de)突(tu)破(po)，制(zhi)造水平實(shi)現了新(xin)的(de)提高。

“華龍(long)一(yi)號”是(shi)中(zhong)國核(he)電(dian)(dian)“走(zou)出(chu)(chu)(chu)去(qu)(qu)”發展戰略(lve)和推進(jin)“一(yi)帶一(yi)路”建設(she)(she)的(de)(de)(de)(de)重(zhong)(zhong)要(yao)舉措，是(shi)國家能源(yuan)發展規劃的(de)(de)(de)(de)重(zhong)(zhong)要(yao)步驟。“華龍(long)一(yi)號”核(he)電(dian)(dian)項(xiang)目系列產(chan)品的(de)(de)(de)(de)完(wan)工，讓中(zhong)國核(he)電(dian)(dian)在“走(zou)出(chu)(chu)(chu)去(qu)(qu)”的(de)(de)(de)(de)歷程(cheng)中(zhong)，由過去(qu)(qu)的(de)(de)(de)(de)“借船(chuan)(chuan)”出(chu)(chu)(chu)海(hai)(hai)、“拼船(chuan)(chuan)”出(chu)(chu)(chu)海(hai)(hai)，向(xiang)“造(zao)船(chuan)(chuan)”出(chu)(chu)(chu)海(hai)(hai)進(jin)行轉(zhuan)變。通過具有自(zi)主(zhu)(zhu)知識產(chan)權(quan)先進(jin)核(he)電(dian)(dian)技術(shu)的(de)(de)(de)(de)輸出(chu)(chu)(chu)，帶動(dong)工程(cheng)、設(she)(she)備(bei)、材料、技術(shu)服(fu)務以(yi)(yi)及技術(shu)標準(zhun)的(de)(de)(de)(de)全方位“走(zou)出(chu)(chu)(chu)去(qu)(qu)”。中(zhong)國一(yi)重(zhong)(zhong)作為(wei)中(zhong)國核(he)電(dian)(dian)裝備(bei)的(de)(de)(de)(de)主(zhu)(zhu)要(yao)供(gong)應商(shang)，多年(nian)來，以(yi)(yi)重(zhong)(zhong)大(da)工程(cheng)項(xiang)目為(wei)依托，以(yi)(yi)自(zi)主(zhu)(zhu)制(zhi)造(zao)、替代進(jin)口為(wei)目標，大(da)力(li)推進(jin)核(he)電(dian)(dian)建設(she)(she)和核(he)能裝備(bei)國產(chan)化，規劃并實施了旨在提升核(he)電(dian)(dian)裝備(bei)制(zhi)造(zao)能力(li)的(de)(de)(de)(de)一(yi)系列重(zhong)(zhong)大(da)技術(shu)改造(zao)項(xiang)目，取得重(zhong)(zhong)要(yao)進(jin)展。目前(qian)已形成年(nian)產(chan)10臺套核(he)島一(yi)回路大(da)型鑄鍛(duan)件(jian)及相關(guan)設(she)(she)備(bei)、5臺套常規島設(she)(she)備(bei)所(suo)需大(da)型鑄鍛(duan)件(jian)的(de)(de)(de)(de)生產(chan)能力(li)。

此次完工制造(zao)的(de)(de)全球首(shou)臺“華龍(long)一號”福(fu)清5號主泵(beng)(beng)泵(beng)(beng)殼(ke)是(shi)中(zhong)(zhong)國一重與中(zhong)(zhong)核集團(tuan)、哈電(dian)集團(tuan)緊密聯系、通力合(he)(he)作(zuo)的(de)(de)又(you)一重大(da)產品。作(zuo)為我國首(shou)臺“華龍(long)一號”堆型(xing)示范(fan)項目，主泵(beng)(beng)泵(beng)(beng)殼(ke)為特厚異形大(da)鍛件(jian)，取樣位(wei)置(zhi)苛刻，鍛件(jian)形狀復雜，熱(re)處(chu)理難度大(da)，性能要(yao)求高，是(shi)核電(dian)大(da)型(xing)關(guan)鍵部(bu)件(jian)中(zhong)(zhong)的(de)(de)復雜不規(gui)則(ze)鍛件(jian)。中(zhong)(zhong)國一重經過(guo)11個(ge)月的(de)(de)精(jing)心(xin)組織、艱苦(ku)奮(fen)戰，先后攻(gong)克了高純凈(jing)鋼水冶煉、超大(da)截(jie)面壓(ya)實(shi)鍛造(zao)、超大(da)型(xing)截(jie)面的(de)(de)細化晶粒(li)熱(re)處(chu)理工藝等難關(guan)，有效地控制了冶煉夾(jia)雜物，滿足了硬度均勻、性能穩定等關(guan)鍵技術指標(biao)，最(zui)終泵(beng)(beng)殼(ke)性能試驗及評定一次合(he)(he)格。

全(quan)(quan)球首(shou)(shou)(shou)臺(tai)“華龍一號”泵(beng)(beng)殼(ke)(ke)鍛件(jian)于(yu)2017年6月底運抵(di)大連核(he)電石(shi)化(hua)公司。在(zai)粗加工(gong)(gong)(gong)(gong)、焊(han)(han)接(jie)(jie)、組(zu)(zu)裝制(zhi)(zhi)造(zao)過(guo)程(cheng)中，大連核(he)電石(shi)化(hua)公司克服了(le)(le)資源少(shao)、工(gong)(gong)(gong)(gong)期緊、任務量(liang)(liang)集中等諸多困難(nan)，尤其是在(zai)內壁帶極堆焊(han)(han)、組(zu)(zu)焊(han)(han)支撐(cheng)、組(zu)(zu)焊(han)(han)安全(quan)(quan)端(duan)等生產中不斷創(chuang)(chuang)新工(gong)(gong)(gong)(gong)藝(yi)，提高(gao)產品質(zhi)量(liang)(liang)和生產效率(lv)。創(chuang)(chuang)新熱(re)處理工(gong)(gong)(gong)(gong)藝(yi)，先(xian)后采(cai)(cai)取(qu)降(jiang)低泵(beng)(beng)殼(ke)(ke)內壁堆焊(han)(han)后熱(re)溫(wen)度，改善了(le)(le)工(gong)(gong)(gong)(gong)人操作環境等，為(wei)提高(gao)產品質(zhi)量(liang)(liang)和生產效率(lv)提供保證(zheng)；創(chuang)(chuang)新組(zu)(zu)焊(han)(han)支撐(cheng)焊(han)(han)接(jie)(jie)工(gong)(gong)(gong)(gong)藝(yi)，由小(xiao)車埋弧(hu)焊(han)(han)代替手工(gong)(gong)(gong)(gong)焊(han)(han)，實現了(le)(le)自動(dong)化(hua)焊(han)(han)接(jie)(jie)，并減少(shao)中間熱(re)處理過(guo)程(cheng)，降(jiang)低了(le)(le)質(zhi)量(liang)(liang)風(feng)險，提高(gao)了(le)(le)效率(lv)，完(wan)工(gong)(gong)(gong)(gong)的(de)6臺(tai)泵(beng)(beng)殼(ke)(ke)共(gong)計36條焊(han)(han)縫均一次(ci)(ci)性UT探傷(shang)合格(ge)；創(chuang)(chuang)新安全(quan)(quan)端(duan)組(zu)(zu)焊(han)(han)工(gong)(gong)(gong)(gong)藝(yi)，通過(guo)借鑒(jian)廠內較為(wei)成熟的(de)U型坡口型式，首(shou)(shou)(shou)次(ci)(ci)將大管全(quan)(quan)位置自動(dong)焊(han)(han)方法應用于(yu)主(zhu)泵(beng)(beng)泵(beng)(beng)殼(ke)(ke)的(de)制(zhi)(zhi)造(zao)中，使泵(beng)(beng)殼(ke)(ke)安全(quan)(quan)端(duan)及見證(zheng)件(jian)焊(han)(han)縫一次(ci)(ci)探傷(shang)合格(ge)。這是國內首(shou)(shou)(shou)次(ci)(ci)采(cai)(cai)用鎳基安全(quan)(quan)端(duan)全(quan)(quan)位置焊(han)(han)接(jie)(jie)，為(wei)今后生產積累了(le)(le)經驗。目前，“華龍一號”福清5號后兩臺(tai)主(zhu)泵(beng)(beng)泵(beng)(beng)殼(ke)(ke)和海外首(shou)(shou)(shou)堆首(shou)(shou)(shou)臺(tai)主(zhu)泵(beng)(beng)泵(beng)(beng)殼(ke)(ke)正在(zai)收尾制(zhi)(zhi)造(zao)，均將于(yu)10月末前提前出廠。

全球(qiu)首(shou)臺“華龍一(yi)號”國產化核電主(zhu)泵(beng)(beng)泵(beng)(beng)殼的完工制造，積累了(le)經驗(yan)，鍛煉了(le)隊伍，增強了(le)能力，為更好地實現核電裝(zhuang)備(bei)國產化創(chuang)造了(le)條件。