<哈爾濱>億錦天澤鋼鐵有限公司
哈爾濱生鐵QT600方鋼聯系電話
哈(ha)爾濱億錦鑄(zhu)(zhu)(zhu)鐵(tie)(tie)型(xing)(xing)(xing)材(cai)(cai)有限公司專業提(ti)供哈(ha)爾濱球(qiu)墨鑄(zhu)(zhu)(zhu)鐵(tie)(tie)棒現(xian)(xian)貨，哈(ha)爾濱鑄(zhu)(zhu)(zhu)鐵(tie)(tie)棒生產(chan)(chan)(chan)廠家目前國內廣泛使(shi)(shi)(shi)用(yong)(yong)(yong)(yong)(yong)的(de)(de)(de)普通(tong)(tong)灰鑄(zhu)(zhu)(zhu)鐵(tie)(tie)玻璃(li)模(mo)具(ju)材(cai)(cai)料(liao)普遍存在(zai)(zai)著表面光潔差，使(shi)(shi)(shi)用(yong)(yong)(yong)(yong)(yong)壽(shou)命短的(de)(de)(de)缺點。 本(ben)(ben)文的(de)(de)(de)目的(de)(de)(de)是通(tong)(tong)過化學(xue)(xue)成分(fen)的(de)(de)(de)控(kong)制和對工(gong)(gong)(gong)藝(yi)(yi)的(de)(de)(de)調整(zheng)，獲得(de)D型(xing)(xing)(xing)石(shi)墨，并對觀(guan)組織、力學(xue)(xue)性能、耐高(gao)溫性能進行研究(jiu)，以提(ti)高(gao)玻璃(li)模(mo)具(ju)的(de)(de)(de)使(shi)(shi)(shi)用(yong)(yong)(yong)(yong)(yong)壽(shou)命。 對鼓肚缺陷，在(zai)(zai)鑄(zhu)(zhu)(zhu)鐵(tie)(tie)型(xing)(xing)(xing)材(cai)(cai)的(de)(de)(de)水平(ping)連(lian)鑄(zhu)(zhu)(zhu)過程中采用(yong)(yong)(yong)(yong)(yong)反弧(hu)度(du)(du)法(fa)工(gong)(gong)(gong)藝(yi)(yi)，即通(tong)(tong)過新型(xing)(xing)(xing)的(de)(de)(de)石(shi)墨套(tao)與引錠裝置來實(shi)現(xian)(xian)的(de)(de)(de)，通(tong)(tong)過實(shi)施反弧(hu)度(du)(du)法(fa)工(gong)(gong)(gong)藝(yi)(yi)，鑄(zhu)(zhu)(zhu)鐵(tie)(tie)型(xing)(xing)(xing)材(cai)(cai)的(de)(de)(de)鼓肚現(xian)(xian)象得(de)到有效(xiao)。但由于(yu)(yu)在(zai)(zai)率次(ci)實(shi)驗(yan)過程中，剛開始(shi)生產(chan)(chan)(chan)鑄(zhu)(zhu)(zhu)鐵(tie)(tie)型(xing)(xing)(xing)材(cai)(cai)時的(de)(de)(de)拉(la)(la)(la)拔速(su)(su)度(du)(du)比(bi)較(jiao)慢、拉(la)(la)(la)拔周期較(jiao)長(chang)，使(shi)(shi)(shi)鑄(zhu)(zhu)(zhu)鐵(tie)(tie)型(xing)(xing)(xing)材(cai)(cai)在(zai)(zai)結(jie)晶(jing)器的(de)(de)(de)停留時間過長(chang)，導(dao)致在(zai)(zai)扁平(ping)方向(xiang)上鑄(zhu)(zhu)(zhu)鐵(tie)(tie)型(xing)(xing)(xing)材(cai)(cai)頂部(bu)略微向(xiang)下(xia)凹，當拉(la)(la)(la)拔參數(shu)調整(zheng)合(he)適(shi)時，下(xia)凹及鼓肚現(xian)(xian)象基(ji)本(ben)(ben)消失(shi)。 由于(yu)(yu)鑄(zhu)(zhu)(zhu)鐵(tie)(tie)型(xing)(xing)(xing)材(cai)(cai)拉(la)(la)(la)坯(pi)(pi)(pi)工(gong)(gong)(gong)藝(yi)(yi)參數(shu)控(kong)制系(xi)統具(ju)有非線性和強耦合(he)的(de)(de)(de)特點，而且無法(fa)建立(li)數(shu)學(xue)(xue)模(mo)型(xing)(xing)(xing)，采用(yong)(yong)(yong)(yong)(yong)BP、GA-BP神(shen)經(jing)網(wang)絡(luo)算(suan)法(fa)進行拉(la)(la)(la)坯(pi)(pi)(pi)工(gong)(gong)(gong)藝(yi)(yi)參數(shu)自適(shi)應(ying)整(zheng)定研究(jiu)。基(ji)于(yu)(yu)Matlab軟件建立(li)以鑄(zhu)(zhu)(zhu)造工(gong)(gong)(gong)藝(yi)(yi)參數(shu)為(wei)輸入，拉(la)(la)(la)坯(pi)(pi)(pi)工(gong)(gong)(gong)藝(yi)(yi)參數(shu)為(wei)輸出的(de)(de)(de)控(kong)制模(mo)型(xing)(xing)(xing)。仿真(zhen)實(shi)驗(yan)表明本(ben)(ben)文建立(li)的(de)(de)(de)拉(la)(la)(la)坯(pi)(pi)(pi)工(gong)(gong)(gong)藝(yi)(yi)參數(shu)GA-BP神(shen)經(jing)網(wang)絡(luo)控(kong)制模(mo)型(xing)(xing)(xing)可以用(yong)(yong)(yong)(yong)(yong)于(yu)(yu)拉(la)(la)(la)坯(pi)(pi)(pi)工(gong)(gong)(gong)藝(yi)(yi)參數(shu)自適(shi)應(ying)整(zheng)定，所獲得(de)拉(la)(la)(la)坯(pi)(pi)(pi)工(gong)(gong)(gong)藝(yi)(yi)參數(shu)能夠用(yong)(yong)(yong)(yong)(yong)于(yu)(yu)實(shi)際生產(chan)(chan)(chan)系(xi)統，實(shi)現(xian)(xian)高(gao)質(zhi)量、率的(de)(de)(de)鑄(zhu)(zhu)(zhu)鐵(tie)(tie)型(xing)(xing)(xing)材(cai)(cai)水平(ping)連(lian)鑄(zhu)(zhu)(zhu)拉(la)(la)(la)坯(pi)(pi)(pi)生產(chan)(chan)(chan)。在(zai)(zai)此成分(fen)范(fan)圍內獲得(de)的(de)(de)(de)D型(xing)(xing)(xing)石(shi)墨鑄(zhu)(zhu)(zhu)鐵(tie)(tie)的(de)(de)(de)力學(xue)(xue)性能為(wei)：硬度(du)(du)HB范(fan)圍為(wei)217～2抗拉(la)(la)(la)強度(du)(du)MPa，范(fan)圍為(wei)246～285。 通(tong)(tong)過采用(yong)(yong)(yong)(yong)(yong)澆注階(jie)梯型(xing)(xing)(xing)試樣和放(fang)置冷(leng)鐵(tie)(tie)方法(fa)，使(shi)(shi)(shi)鑄(zhu)(zhu)(zhu)鐵(tie)(tie)獲得(de)不同(tong)的(de)(de)(de)冷(leng)卻速(su)(su)度(du)(du)，研究(jiu)冷(leng)卻速(su)(su)度(du)(du)對D型(xing)(xing)(xing)石(shi)墨鑄(zhu)(zhu)(zhu)鐵(tie)(tie)觀(guan)組織的(de)(de)(de)影(ying)響。
