連鑄坯的缺陷與控制技術(shù)-展示頁(yè)
2024-11-19 12:20本頁(yè)面
【正文】 ........................ 5 圓鑄坯變形 ......................................................................................................... 6 橢圓形變形 .................................................................................................. 6 不規(guī)則變形 .................................................................................................. 6 2 連鑄坯的表面質(zhì)量控制 ............................................................................................ 7 振動(dòng)痕跡 ............................................................................................................. 7 表面裂紋 ............................................................................................................. 7 表面縱裂紋 .................................................................................................. 7 表面橫裂紋 .................................................................................................. 8 表面夾渣 ........................................................................................................... 10 表面夾渣形成的原因 ................................................................................ 10 解決表面夾渣的方法 [5]............................................................................. 11 保護(hù)渣性能對(duì)連鑄圓坯表面質(zhì)量的影響 [7] .................................................... 11 3 連鑄坯的內(nèi)部質(zhì)量控制 .......................................................................................... 13 連鑄坯的中心裂紋 ........................................................................................... 13 內(nèi)部裂紋產(chǎn)生的原因及預(yù)防措施 ............................................................ 13 連鑄坯的內(nèi)部夾雜物 ....................................................................................... 14 夾雜物的分類 ............................................................................................ 15 夾雜物的來(lái)源 [9]......................................................................................... 15 連鑄坯中夾雜物的控制方法 [10]................................................................ 16 結(jié) 論 .......................................................................................................................... 18 致 謝 .......................................................................................................................... 19 參考文獻(xiàn) ...................................................................................................................... 20 1 摘 要 連鑄坯質(zhì)量決定著最終產(chǎn)品的質(zhì)量。從廣義來(lái)說(shuō)所謂的連鑄坯質(zhì)量是得到嚴(yán)格產(chǎn)品所允許范圍以內(nèi)，叫合格產(chǎn)品。與結(jié)晶器內(nèi)腔尺寸和表面狀態(tài)及冷卻的均勻程度有 關(guān)。連鑄坯這些表面缺陷主要是鋼液在結(jié)晶器內(nèi)坯殼形成生長(zhǎng)過(guò)程中產(chǎn)生的，與澆注溫度，拉坯速度，保護(hù)渣性能，浸入式水口的設(shè)計(jì)，結(jié)晶式的內(nèi)腔形狀，水縫均勻情況，結(jié)晶器振動(dòng)以及結(jié)晶器液面的穩(wěn)定因素有關(guān)。二冷區(qū)冷卻水的合理分配，支撐系統(tǒng)的嚴(yán)格對(duì)中是保證鑄坯質(zhì)量的關(guān)鍵。 關(guān)鍵詞 : 連鑄坯；純凈度；裂紋；保護(hù)渣 2 ABSTRACT Continuous casting billet quality determines the quality of the final product. Broadly speaking the billet quality is strictly products allowed range, called qualified products. Quality of continuous casting slab is from a few aspects of evaluation: 1. continuous casting
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