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上海億錦鑄(zhu)(zhu)鐵(tie)(tie)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)材(cai)(cai)(cai)有限公(gong)司專業(ye)(ye)(ye)(ye)提(ti)供上海球墨鑄(zhu)(zhu)鐵(tie)(tie)棒現(xian)貨，上海鑄(zhu)(zhu)鐵(tie)(tie)棒生(sheng)(sheng)產廠家(jia)的(de)(de)(de)鑄(zhu)(zhu)鐵(tie)(tie)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)材(cai)(cai)(cai)在(zai)重(zhong)工(gong)(gong)(gong)業(ye)(ye)(ye)(ye)中(zhong)(zhong)需求(qiu)量大，被廣泛應(ying)用于交通(tong)運輸(shu)、機(ji)床、印刷、農業(ye)(ye)(ye)(ye)機(ji)械等支柱行業(ye)(ye)(ye)(ye)。拉(la)(la)坯(pi)工(gong)(gong)(gong)藝參(can)數設置(zhi)是鑄(zhu)(zhu)鐵(tie)(tie)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)材(cai)(cai)(cai)生(sheng)(sheng)產中(zhong)(zhong)的(de)(de)(de)關鍵環(huan)節(jie)，設置(zhi)不合(he)理會導(dao)致(zhi)拉(la)(la)漏、拉(la)(la)斷等生(sheng)(sheng)產事(shi)故和產生(sheng)(sheng)表(biao)面裂紋等鑄(zhu)(zhu)造缺(que)陷(xian)。現(xian)有鑄(zhu)(zhu)鐵(tie)(tie)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)材(cai)(cai)(cai)生(sheng)(sheng)產企業(ye)(ye)(ye)(ye)拉(la)(la)坯(pi)工(gong)(gong)(gong)藝參(can)數控(kong)制技術參(can)差不齊，尚無完整(zheng)(zheng)(zheng)的(de)(de)(de)理論體(ti)系(xi)。為了深(shen)入研(yan)究(jiu)上述(shu)問(wen)題，本文以鑄(zhu)(zhu)鐵(tie)(tie)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)材(cai)(cai)(cai)拉(la)(la)坯(pi)工(gong)(gong)(gong)藝為研(yan)究(jiu)對象(xiang)，研(yan)究(jiu)拉(la)(la)坯(pi)工(gong)(gong)(gong)藝參(can)數控(kong)制規律，拉(la)(la)坯(pi)工(gong)(gong)(gong)藝參(can)數自適(shi)(shi)應(ying)整(zheng)(zheng)(zheng)定問(wen)題，以便解(jie)決生(sheng)(sheng)產事(shi)故與(yu)鑄(zhu)(zhu)件缺(que)陷(xian)問(wen)題，為生(sheng)(sheng)產企業(ye)(ye)(ye)(ye)提(ti)供一定的(de)(de)(de)理論體(ti)系(xi)指導(dao)。 對鼓(gu)肚缺(que)陷(xian)，在(zai)鑄(zhu)(zhu)鐵(tie)(tie)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)材(cai)(cai)(cai)的(de)(de)(de)水(shui)平連(lian)鑄(zhu)(zhu)過程中(zhong)(zhong)采用反(fan)弧(hu)度(du)法(fa)(fa)工(gong)(gong)(gong)藝，即通(tong)過新型(xing)(xing)(xing)(xing)(xing)(xing)(xing)的(de)(de)(de)石(shi)墨套與(yu)引錠裝(zhuang)置(zhi)來實(shi)現(xian)的(de)(de)(de)，通(tong)過實(shi)施反(fan)弧(hu)度(du)法(fa)(fa)工(gong)(gong)(gong)藝，鑄(zhu)(zhu)鐵(tie)(tie)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)材(cai)(cai)(cai)的(de)(de)(de)鼓(gu)肚現(xian)象(xiang)得(de)到(dao)有效。但由于在(zai)率(lv)(lv)次(ci)實(shi)驗過程中(zhong)(zhong)，剛開始生(sheng)(sheng)產鑄(zhu)(zhu)鐵(tie)(tie)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)材(cai)(cai)(cai)時(shi)的(de)(de)(de)拉(la)(la)拔速度(du)比較慢、拉(la)(la)拔周期(qi)較長，使鑄(zhu)(zhu)鐵(tie)(tie)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)材(cai)(cai)(cai)在(zai)結(jie)晶器的(de)(de)(de)停留(liu)時(shi)間過長，導(dao)致(zhi)在(zai)扁平方向上鑄(zhu)(zhu)鐵(tie)(tie)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)材(cai)(cai)(cai)頂部(bu)(bu)略微(wei)向下凹(ao)，當拉(la)(la)拔參(can)數調整(zheng)(zheng)(zheng)合(he)適(shi)(shi)時(shi)，下凹(ao)及鼓(gu)肚現(xian)象(xiang)基本消(xiao)失(shi)。力學(xue)性能(neng)更(geng)(geng)為優(you)良(liang)。與(yu)實(shi)施反(fan)弧(hu)度(du)法(fa)(fa)之(zhi)前的(de)(de)(de)鑄(zhu)(zhu)鐵(tie)(tie)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)材(cai)(cai)(cai)相(xiang)比，實(shi)施反(fan)弧(hu)度(du)法(fa)(fa)之(zhi)后的(de)(de)(de)鑄(zhu)(zhu)鐵(tie)(tie)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)材(cai)(cai)(cai)硬度(du)得(de)到(dao)提(ti)高(gao)，組織更(geng)(geng)為均勻，并且(qie)其抗拉(la)(la)強度(du)指標(biao)高(gao)于鑄(zhu)(zhu)鐵(tie)(tie)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)材(cai)(cai)(cai)標(biao)準(JBT10854-2008水(shui)平連(lian)續鑄(zhu)(zhu)造鑄(zhu)(zhu)鐵(tie)(tie)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)材(cai)(cai)(cai)) 性能(neng)要求(qiu)。同時(shi)，伸(shen)長率(lv)(lv)指標(biao)均超過LZQT500-7規定的(de)(de)(de)指標(biao)。與(yu)拉(la)(la)伸(shen)性能(neng)結(jie)果(guo)類似，反(fan)弧(hu)度(du)法(fa)(fa)試樣的(de)(de)(de)抗壓(ya)強度(du)高(gao)于未實(shi)施反(fan)弧(hu)度(du)法(fa)(fa)試樣的(de)(de)(de)抗拉(la)(la)強度(du)。建立了晶粒生(sheng)(sheng)長概率(lv)(lv)模(mo)型(xing)(xing)(xing)(xing)(xing)(xing)(xing).根據(ju)所建立的(de)(de)(de)模(mo)型(xing)(xing)(xing)(xing)(xing)(xing)(xing)采用了Microsoft Visual C++ 6.0開發平臺開發了相(xiang)應(ying)的(de)(de)(de)三維(wei)模(mo)擬計算(suan)程序和二維(wei)動態顯示程序.針對觀模(mo)擬計算(suan)量大的(de)(de)(de)特點本文采用了局部(bu)(bu)區(qu)域(yu)模(mo)擬法(fa)(fa)并相(xiang)應(ying)地解(jie)決了整(zheng)(zheng)(zheng)體(ti)區(qu)域(yu)和局部(bu)(bu)區(qu)域(yu)之(zhi)間的(de)(de)(de)數據(ju)映射(she)、局部(bu)(bu)區(qu)域(yu)的(de)(de)(de)邊(bian)界處(chu)理.

上海(hai)億(yi)錦鑄鐵(tie)型(xing)(xing)材(cai)有(you)(you)限公司專(zhuan)業提(ti)供上海(hai)球(qiu)(qiu)(qiu)(qiu)(qiu)墨鑄鐵(tie)棒現貨，上海(hai)鑄鐵(tie)棒生(sheng)產(chan)廠家球(qiu)(qiu)(qiu)(qiu)(qiu)化(hua)(hua)(hua)(hua)(hua)(hua)處(chu)(chu)理(li)(li)(li)是(shi)(shi)(shi)(shi)球(qiu)(qiu)(qiu)(qiu)(qiu)鐵(tie)生(sheng)產(chan)的(de)重(zhong)要(yao)(yao)環(huan)節之球(qiu)(qiu)(qiu)(qiu)(qiu)化(hua)(hua)(hua)(hua)(hua)(hua)方法(fa)(fa)的(de)選用對球(qiu)(qiu)(qiu)(qiu)(qiu)鐵(tie)性(xing)能(neng)(neng)有(you)(you)著重(zhong)要(yao)(yao)的(de)影響，是(shi)(shi)(shi)(shi)獲得高(gao)(gao)(gao)(gao)質量(liang)鑄件(jian)的(de)重(zhong)要(yao)(yao)因(yin)(yin)素。蓋包法(fa)(fa)穩定(ding)(ding)和(he)(he)提(ti)高(gao)(gao)(gao)(gao)了鎂的(de)吸(xi)收(shou)率，能(neng)(neng)有(you)(you)效地提(ti)高(gao)(gao)(gao)(gao)球(qiu)(qiu)(qiu)(qiu)(qiu)鐵(tie)的(de)綜(zong)(zong)合性(xing)能(neng)(neng)和(he)(he)生(sheng)產(chan)的(de)穩定(ding)(ding)性(xing)，同時減少了鎂光、粉塵等(deng)污(wu)染(ran)，因(yin)(yin)此是(shi)(shi)(shi)(shi)一種很有(you)(you)發展前(qian)景的(de)球(qiu)(qiu)(qiu)(qiu)(qiu)化(hua)(hua)(hua)(hua)(hua)(hua)處(chu)(chu)理(li)(li)(li)工藝。 球(qiu)(qiu)(qiu)(qiu)(qiu)化(hua)(hua)(hua)(hua)(hua)(hua)處(chu)(chu)理(li)(li)(li)溫度(du)(du)(du)是(shi)(shi)(shi)(shi)球(qiu)(qiu)(qiu)(qiu)(qiu)化(hua)(hua)(hua)(hua)(hua)(hua)處(chu)(chu)理(li)(li)(li)過(guo)程中的(de)一種重(zhong)要(yao)(yao)工藝參(can)數(shu)，球(qiu)(qiu)(qiu)(qiu)(qiu)化(hua)(hua)(hua)(hua)(hua)(hua)處(chu)(chu)理(li)(li)(li)溫度(du)(du)(du)的(de)波動對鎂的(de)吸(xi)收(shou)率有(you)(you)著重(zhong)要(yao)(yao)的(de)影響。伸(shen)長率指標均超過(guo)LZQT500-7規定(ding)(ding)的(de)指標。與(yu)拉伸(shen)性(xing)能(neng)(neng)結果類似，反(fan)弧度(du)(du)(du)法(fa)(fa)試樣的(de)抗壓(ya)強度(du)(du)(du)高(gao)(gao)(gao)(gao)于未實施(shi)反(fan)弧度(du)(du)(du)法(fa)(fa)試樣的(de)抗拉強度(du)(du)(du).球(qiu)(qiu)(qiu)(qiu)(qiu)化(hua)(hua)(hua)(hua)(hua)(hua)處(chu)(chu)理(li)(li)(li)溫度(du)(du)(du)過(guo)高(gao)(gao)(gao)(gao)或過(guo)低(di)(di)，鎂的(de)吸(xi)收(shou)率都會降低(di)(di)，造成(cheng)球(qiu)(qiu)(qiu)(qiu)(qiu)化(hua)(hua)(hua)(hua)(hua)(hua)不(bu)良(liang)，球(qiu)(qiu)(qiu)(qiu)(qiu)鐵(tie)的(de)綜(zong)(zong)合性(xing)能(neng)(neng)和(he)(he)生(sheng)產(chan)穩定(ding)(ding)性(xing)降低(di)(di)，給(gei)產(chan)品(pin)質量(liang)帶來波動，增加廢品(pin)率，降低(di)(di)綜(zong)(zong)合經濟效益。因(yin)(yin)此需要(yao)(yao)尋求(qiu)佳的(de)球(qiu)(qiu)(qiu)(qiu)(qiu)化(hua)(hua)(hua)(hua)(hua)(hua)處(chu)(chu)理(li)(li)(li)溫度(du)(du)(du)范(fan)圍，優(you)化(hua)(hua)(hua)(hua)(hua)(hua)蓋包法(fa)(fa)工藝參(can)數(shu)。 本課題正是(shi)(shi)(shi)(shi)以(yi)此為目的(de)，充分(fen)(fen)利用協作廠提(ti)供的(de)試驗條件(jian)和(he)(he)生(sheng)產(chan)現場，以(yi)開發新鑄鐵(tie)型(xing)(xing)材(cai)產(chan)品(pin)為研究對象，通過(guo)選用合理(li)(li)(li)的(de)化(hua)(hua)(hua)(hua)(hua)(hua)學成(cheng)分(fen)(fen)，采用沖天(tian)爐與(yu)電爐雙聯(lian)的(de)熔煉工藝，并對原(yuan)鐵(tie)液(ye)進行脫硫處(chu)(chu)理(li)(li)(li)，獲得成(cheng)分(fen)(fen)穩定(ding)(ding)的(de)低(di)(di)硫原(yuan)鐵(tie)液(ye)，然后調(diao)整球(qiu)(qiu)(qiu)(qiu)(qiu)化(hua)(hua)(hua)(hua)(hua)(hua)處(chu)(chu)理(li)(li)(li)溫度(du)(du)(du)，進行蓋包法(fa)(fa)球(qiu)(qiu)(qiu)(qiu)(qiu)化(hua)(hua)(hua)(hua)(hua)(hua)處(chu)(chu)理(li)(li)(li)和(he)(he)沖入法(fa)(fa)球(qiu)(qiu)(qiu)(qiu)(qiu)化(hua)(hua)(hua)(hua)(hua)(hua)處(chu)(chu)理(li)(li)(li)對溫度(du)(du)(du)的(de)敏感性(xing)試驗。