TDM3.2半固態(tài)連鑄的基本概念與技術(shù)關(guān)鍵 半固態(tài)連鑄是半固態(tài)加工與現(xiàn)代連鑄技術(shù)相結(jié)合的產(chǎn)物。它與普通連鑄的根本區(qū)別在于金屬熔體進(jìn)入結(jié)晶器時的狀態(tài)不同。在普通連鑄中,金屬液以全液態(tài)進(jìn)入結(jié)晶器。而在半固態(tài)連鑄過程中,金屬熔體以固液兩相共存的狀態(tài)進(jìn)入結(jié)晶器,其中的固相為非枝晶粒狀組織。半固態(tài)連鑄的主要工藝流程為金屬冶煉→半固態(tài)漿料的制備→拉坯。其技術(shù)關(guān)鍵主要有兩個,一是連續(xù)冷卻攪拌條件下非枝晶粒狀固相的形成與控制,二是含有非枝晶粒狀固相的半固態(tài)漿料的充型。 2.半固態(tài)連鑄的TDM3.2產(chǎn)生、發(fā)展與現(xiàn)狀 2.1 概況 Flemings 最早提出了半固態(tài)連鑄的技術(shù)思想[1],并首先對低熔點(diǎn)有色合金進(jìn)行了試驗(yàn)研究[2]。進(jìn)入八十年代以后,美國Alumax 公司率先設(shè)計(jì)制造了一臺可以小批量生產(chǎn)的有色金屬半固態(tài)連鑄機(jī)[1]。隨后,美國ISC(INLAND STEEL COMPANY)開始了半固態(tài)圓坯連鑄機(jī)的商業(yè)化工作。在此基礎(chǔ)上,1995年美國ISC公司進(jìn)一步開展了鋼鐵材料半固態(tài)連鑄的試驗(yàn)研究[3],取得了可喜的結(jié)果。我國東南大學(xué)、清華大學(xué)、有色金屬總院等單位也分別開展了有色金屬半固態(tài)鑄造的研究。1996年本課題組與河北賀進(jìn)建材機(jī)械廠等單位聯(lián)合立項(xiàng),開展了黑色金屬半固態(tài)連鑄的研究,并取得了突破性進(jìn)展[4],1998年初經(jīng)國家教育部組織鑒定,達(dá)到了國際先進(jìn)水平,填補(bǔ)了我國黑色金屬半固態(tài)連鑄研究的空白。 綜觀國內(nèi)外半固態(tài)連鑄技術(shù)的研究可以發(fā)現(xiàn),目前所取得的主要進(jìn)展是:(1) TDM3.2確立了半固態(tài)連鑄的技術(shù)內(nèi)涵;(2) 從低熔點(diǎn)有色合金跨入了高熔點(diǎn)黑色金屬領(lǐng)域;(3) 對連續(xù)冷卻攪拌條件下非枝晶固相的形成與演變有了明確的認(rèn)識;(4) 提出了半固態(tài)連鑄過程穩(wěn)定性判據(jù)及其工藝設(shè)計(jì)準(zhǔn)則;(5) 對半固態(tài)連鑄坯的特點(diǎn)及質(zhì)量評價有了客觀的認(rèn)識。TDM3.2
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TDM3.2
TDM3.3-020-300-W0
TDM4.1
TDM4.2
TDM03.2-030-300-W1
TDM1.2-100-300-W1-000
TDM1.2-100-300-W1-115
TDM1.2-100-300-W1-220
TDM1.2-50-300-W1
TDM1.2-030-300-W1-000
TDM1.2-050-300-W1-000
TDM1.2-30-300-W0
TDM1.2-30-300-W1-000
TDM1.2-30-300-WO
TDM1.2-50-300-W1/115
TDM1.4-100-300-W1-000
TDM2.1-030-300-W1-000
TDM3.2-020-300-W0
TDM3.2-020-300-WI
TDM4.1-20-300-W0
TDM1.2-050-300-W1
TDM1.2-050-300-W
TDM3.2-20-233-64
TDM3.2-30-300-W1
TDM1.2-05-300
TDM1.2-050-300-W
TDM1.2-100-300
TDM1.2ES
TDM3.2-020-300-W
TDM3.2-020-300W0
TDM3.2-20-300-WO
TDM4.1-020-300-W0/S102
TDM1.2-50-300W1
TDM1.2-30-300W0
TDM1.2-100-300W1
TDM2.1-015-300
TDM2.1-030-300
TDM3.2-020-300
TDM3.2-030-300
TDM4.1-020-300
TDM4.1-030-300
TDM6.1-015-300
TDM6.1-030-300
TDM7.1-015-300
TDM7.1-030-300
TDM1.2-030-300
TDM1.2-050-300
TDM1.2-100-300
TDM1.2-030-300-W0
TDM1.2-050-300-W1
TDM1.2-100-300-W1
TDM1.2-030-300-W1
TDM2.1-030-300-W1
TDM2.1-030-300-W0
TDM2.1-015-300-W0
TDM3.2-030-300-W1
TDM4.1-020-300-W0
TDM4.1-030-300-W1
TDM6.1-015-300-W0
TDM6.1-030-300-W1
TDM7.1-015-300-W0
TDM7.1-030-300-W1
TDM4.1-020-300-W0/S102
TDM1.2-100-300-W1-115
TDM1.2-030-300-W1-000/S105
TDM1.2-050-300-W1-000/S105
TDM1.2-100-300-W1-000/S105
TDM1.2-030-300-W1-220/S100
TDM1.2-100-300-W1-220/S100
TDM2.1-030-300-W1-220/S101
TDM1.2-050-300-W1-220/S102
TDM4.1-030-300-W1/S102
TDM1.2-100-300-W1-000/S102
TDM1.2-050-300-W1-000/S102
TDM1.2-030-300-W1-000/S102
TDM1.2-100-300-W1-000/S100
TDM3.3-030-300-W1
TDM1.3-030-300-W1-000
TDM1.3-050-300-W1-000
TDM1.3-100-300-W1-000
TDM7.1-015-300-W0/S102
TDM4.3-020-300-W0
TDM4.3-030-300-W1
TDM1.2-050-300-W1-000/S107
TDM1.3-030-300-W1-000/S102
TDM1.3-100-300-W1-000/S102
TDM1.3-100-300-W1-000/S100
TDM1.3-030-300-W1-000/S105
TDM1.3-050-300-W1-000/S105
TDM1.3-100-300-W1-000/S105
TDM7.1-030-300-W1/S102
TDM1.4-050-300-W1-000
TDM1.4-100-300-W1-000
TDM1.2-050-300-W1-000/S100
TDM1.2-030-300-W1-000/S107
TDM1.2-050-300-W1-000/S108
TFM3.1-050-300-W1-220
TFM3.1-050-300-W1-220
TFM3.1-050-300-W1-1
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Yaskawa JANCU-MRY01B-1 REV.E02 EDF9200676-D0
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YASKAWA ELECTRIC JANCD-MM13B REV. B
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JANCD-FC242 Yaskawa