四辊式热定径机工艺实践

介绍了四辊式热定径机的由来及主要工艺参数,叙述了其结构、轧辊长度设计、轧辊传动方式、轧辊间隙消除方式等的技术特点和孔型设计要点,简要分析了3种定径机(二辊式、三辊式和四辊式)孔型半径差的比例关系。通过对具有代表性规格产品外径检测数据的统计分析,总结出阶段性生产经验,提出了对四辊式热定径机的总体评价及建议。

Technological Practice of 4-roll Hot-sizing Mill

Elaborated in the essay are the history and the main technical parameters of the 4-roll hot-sizing mill. Also described are the groove design tips and the technical characteristics of such aspects of the mill, in- cluding the structure of the mill, design of the roll length, roll drive type and method for roll clearance elimination, etc. Furthermore, a brief discussion is made on the proportional relationship of groove radius difference of the three sizing mill types, i.e., the 2-roll type, the 3-roll type and the 4-roll type. Statistical analysis of the OD measurement data of the products with typical sizes is conducted. Based on the analysis result, periodical production experience is summarized, and the general evaluation of and relevant suggestions for the 4-roll hot-sizing mill are proposed.