頁籤選單縮合
題名 | 高壓噴水除銹改善小鋼胚軋入銹皮=Inprovement of Rolled-in Scale Defects on Billet Surface by Descaling Process |
---|---|
作者 | 林尚良; 涂泰年; 張國基; | 書刊名 | 技術與訓練 |
卷期 | 33:1=242 2008.03[民97.03] |
頁次 | 頁26-34 |
分類號 | 454.87 |
關鍵詞 | 除銹; 除銹機; 軋入銹皮; 研磨; Descaling; Descaling box; Rolled-in scale; Grinding; |
語文 | 中文(Chinese) |
中文摘要 | 小鋼胚表面B、D二面,滿佈細短線縫型缺陷,對研磨等級0023以上造成極大研磨負荷。分析缺陷成因,與軋延鋼胚時軋入銹皮有關。以燒除機前之除銹機進行除銹作業,評估除銹效益,經比較銹皮殘留情與酸洗之結果,顯示軋入銹皮明顯獲得改善,而可降低研磨時間。民國94年11月乃於小鋼胚工場即設高壓噴水除銹機(Descaling Box),透過除銹壓力與除銹效果之迴歸分析,建議除銹壓力應大於130BAR。經噴水除銹後,研磨時間平均減少0.60分/支,預估每年可增加研磨產能94,523噸。 |
英文摘要 | There is a large amount of tiny seam-like defectsdistributing well on both billet surfaces B and D which are the contact faces with up and down roll individually. By investigating its characteristics and mechanism, this study verified that the tiny defects result from rolled-in scale. In order to evaluate in advance the effect of descaling process on reducing sticky scale before rolling, the tested billets were deliberately arranged to be descaled by the descaler installed in front of the scarifying machine in the opposite rolling direction. Both the amount of residual scales before rolling and macro etching revealed that descaling process could efficienty improve the surface quality. Then the descaling box designed with higher jetting water pressure was installed prior to R-mill in Nov. 2005. Through regression analysis the relationship between descaling pressure and descaling effect, and the jetting water pressure was concluded to be higher than 130BAR. After descaling, the billet grinding time can be significantly reduced by 0.6min/pcs on average. The estimated grinding capacity can be increased by 94,523MT per year. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。