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该文分析了1400轧机压上油缸密封系统泄漏的原因后,采用先进的密封结构,对原密封系统进行技术改造,从而得到良好的效果.“,”This paper analyzes the reasons of leakage in the main hydraulic cylinder of foil mill. The original sealing structure was transformed with new one achieving good sealing results.