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廣東(dong)(dong)億錦鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)(tie)(tie)型(xing)(xing)(xing)材(cai)(cai)(cai)有限公司專業(ye)提(ti)供廣東(dong)(dong)球(qiu)(qiu)(qiu)墨(mo)(mo)(mo)鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)(tie)(tie)棒現(xian)貨(huo)，廣東(dong)(dong)鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)(tie)(tie)棒生(sheng)(sheng)(sheng)產(chan)(chan)廠家在(zai)生(sheng)(sheng)(sheng)鐵(tie)(tie)(tie)(tie)原料貨(huo)源穩定(ding)研究銅錳(meng)(meng)合(he)金化(hua)對鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)態球(qiu)(qiu)(qiu)（略）影響.在(zai)穩定(ding)生(sheng)(sheng)(sheng)產(chan)(chan)鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)態鐵(tie)(tie)(tie)(tie)素(su)體(ti)球(qiu)(qiu)(qiu)鐵(tie)(tie)(tie)(tie)的條件(jian)(jian)下(xia)適(shi)當(dang)(dang)(dang)控Si含量(liang)強(qiang)化(hua)孕(yun)育(yu)添加少量(liang)Cu和(he)Mn成功生(sheng)(sheng)(sheng)產(chan)(chan)出度(du)(du)(du)、高(gao)(gao)塑(su)性(xing)(xing)的鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)態球(qiu)(qiu)(qiu)墨(mo)(mo)(mo)鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)(tie)(tie)(塑(su)性(xing)(xing)指(zhi)標(biao)δ比(bi)相(xiang)應(ying)牌號高(gao)(gao)出一個級(ji)別(bie)).用(yong)(yong)這種方(fang)法(fa)(fa)生(sheng)(sheng)(sheng)產(chan)(chan)的鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)件(jian)(jian)性(xing)(xing)能穩定(ding)成本(ben)降低.為了不使鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)件(jian)(jian)中(zhong)出現(xian)碳化(hua)物(wu)并減少鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)件(jian)(jian)不同(tong)(tong)截面的硬度(du)(du)(du)差應(ying)視力學性(xing)(xing)能和(he)鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)件(jian)(jian)壁厚不同(tong)(tong)而適(shi)當(dang)(dang)(dang)（略）n含量(liang)本(ben)文重(zhong)點研究了銅錳(meng)(meng)對合(he)金化(hua)鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)態球(qiu)(qiu)(qiu)墨(mo)(mo)(mo)鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)(tie)(tie)性(xing)(xing)能的影響. 對鼓肚(du)缺陷，在(zai)鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)(tie)(tie)型(xing)(xing)(xing)材(cai)(cai)(cai)的水(shui)(shui)平(ping)連(lian)鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)過(guo)程中(zhong)采用(yong)(yong)反弧(hu)(hu)度(du)(du)(du)法(fa)(fa)工(gong)藝(yi)(yi)，即通(tong)過(guo)新型(xing)(xing)(xing)的石(shi)墨(mo)(mo)(mo)套(tao)與(yu)引錠裝置來實(shi)現(xian)的，通(tong)過(guo)實(shi)施反弧(hu)(hu)度(du)(du)(du)法(fa)(fa)工(gong)藝(yi)(yi)，鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)(tie)(tie)型(xing)(xing)(xing)材(cai)(cai)(cai)的鼓肚(du)現(xian)象(xiang)得(de)到(dao)有效(xiao)。但由于(yu)在(zai)率次實(shi)驗過(guo)程中(zhong)，剛開始生(sheng)(sheng)(sheng)產(chan)(chan)鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)(tie)(tie)型(xing)(xing)(xing)材(cai)(cai)(cai)時的拉(la)(la)拔速度(du)(du)(du)比(bi)較慢、拉(la)(la)拔周(zhou)期(qi)較長，使鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)(tie)(tie)型(xing)(xing)(xing)材(cai)(cai)(cai)在(zai)結(jie)晶器的停留時間過(guo)長，導致在(zai)扁平(ping)方(fang)向(xiang)上(shang)鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)(tie)(tie)型(xing)(xing)(xing)材(cai)(cai)(cai)頂部略微(wei)向(xiang)下(xia)凹(ao)，當(dang)(dang)(dang)拉(la)(la)拔參數(shu)調整(zheng)合(he)適(shi)時，下(xia)凹(ao)及鼓肚(du)現(xian)象(xiang)基本(ben)消失。實(shi)施反弧(hu)(hu)度(du)(du)(du)法(fa)(fa)之(zhi)后的鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)(tie)(tie)型(xing)(xing)(xing)材(cai)(cai)(cai)硬度(du)(du)(du)得(de)到(dao)提(ti)高(gao)(gao)，組織更為均勻，并且其抗拉(la)(la)強(qiang)度(du)(du)(du)指(zhi)標(biao)高(gao)(gao)于(yu)鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)(tie)(tie)型(xing)(xing)(xing)材(cai)(cai)(cai)標(biao)準(JBT10854-2008水(shui)(shui)平(ping)連(lian)續鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)造鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)(tie)(tie)型(xing)(xing)(xing)材(cai)(cai)(cai)) 性(xing)(xing)能要求。同(tong)(tong)時，伸長率指(zhi)標(biao)均超過(guo)LZQT500-7規(gui)定(ding)的指(zhi)標(biao)。與(yu)拉(la)(la)伸性(xing)(xing)能結(jie)果類似，反弧(hu)(hu)度(du)(du)(du)法(fa)(fa)試樣的抗壓(ya)強(qiang)度(du)(du)(du)高(gao)(gao)于(yu)未實(shi)施反弧(hu)(hu)度(du)(du)(du)法(fa)(fa)試樣的抗拉(la)(la)強(qiang)度(du)(du)(du)。仿真實(shi)驗表明本(ben)文建(jian)立(li)的拉(la)(la)坯工(gong)藝(yi)(yi)參數(shu)GA-BP神經網絡控制模型(xing)(xing)(xing)可(ke)以用(yong)(yong)于(yu)拉(la)(la)坯工(gong)藝(yi)(yi)參數(shu)自適(shi)應(ying)整(zheng)定(ding)，所獲得(de)拉(la)(la)坯工(gong)藝(yi)(yi)參數(shu)能夠用(yong)(yong)于(yu)實(shi)際(ji)生(sheng)(sheng)(sheng)產(chan)(chan)系(xi)統，實(shi)現(xian)高(gao)(gao)質量(liang)、率的鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)(tie)(tie)型(xing)(xing)(xing)材(cai)(cai)(cai)水(shui)(shui)平(ping)連(lian)鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)拉(la)(la)坯生(sheng)(sheng)(sheng)產(chan)(chan)。在(zai)生(sheng)(sheng)(sheng)產(chan)(chan)工(gong)藝(yi)(yi)上(shang)選用(yong)(yong)球(qiu)(qiu)(qiu)（略）育(yu)劑和(he)高(gao)(gao)低溫兩階段石(shi)墨(mo)(mo)(mo)化(hua)退火都是提(ti)高(gao)(gao)球(qiu)(qiu)(qiu)墨(mo)(mo)(mo)鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)(tie)(tie)低溫沖(chong)(chong)(chong)擊韌(ren)性(xing)(xing)的有效(xiao)途徑(jing).球(qiu)(qiu)(qiu)墨(mo)(mo)(mo)鑄(zhu)(zhu)(zhu)(zhu)(zhu)(zhu)鐵(tie)(tie)(tie)(tie)的低溫沖(chong)(chong)(chong)擊韌(ren)性(xing)(xing)與(yu)金相(xiang)組織有著密(mi)切聯系(xi).石(shi)墨(mo)(mo)(mo)球(qiu)(qiu)(qiu)的球(qiu)(qiu)(qiu)化(hua)級(ji)別(bie)和(he)大(da)小級(ji)別(bie)越高(gao)(gao)石(shi)墨(mo)(mo)(mo)球(qiu)(qiu)(qiu)越圓整(zheng)和(he)細小低溫沖(chong)(chong)(chong)擊韌(ren)性(xing)(xing)就(jiu)越高(gao)(gao).