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oscillation marks on strand
met.
铸坯振痕
;
连铸坯表面振痕
(【技】结晶器振动在连铸坯表面产生的横向痕迹。振痕处易形成裂纹和成份偏析,并且随着振痕深度的增加而加重。因此减小振痕深度有利于改善铸坯表面质量。研究表明,振频高、振幅小、拉坯速度大、负滑脱时间短、保护渣黏度大及消耗量少,振痕深度就浅。同时,采用一些新型结晶器,例如钻石形结晶器、曲面结晶器、抛物线结晶器等,也有利于减小振痕深度。)
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