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非晶带材成形采用急速冷却方法,其中冷却铜辊内流道设计是非晶带材成形装备研究中的关键问题。根据带材成形的冷却工艺要求,提出了冷却铜辊内流道设计准则。在此基础上,设计出4种典型的冷却铜辊内流道结构。采用流-固耦合传热方法对所设计的4种不同的冷却铜辊内流道流场进行数值模拟分析,得到了不同流道结构所对应的压力场、温度场随进水流量的变化规律。为了评价内流道的换热能力,提出了内流道综合换热系数作为量化换热能力的指标。分析表明:散射肋形流道进出口压降较小,且其换热能力优于其他3种结构,适用于冷却铜辊内流道结构。
The rapid cooling method is adopted for the forming of amorphous strip, and the design of the cooling channel in the cooling copper roll is the key issue in the research of amorphous strip forming equipment. According to the requirements of the cooling process of strip forming, the design criteria for cooling the inner flow channel of copper roller are proposed. On this basis, four kinds of typical inner structures of cooling copper roller were designed. The flow fields of the four different cooling copper rollers were numerically simulated by using the fluid-solid coupling heat transfer method. The pressure fields and temperature fields corresponding to different flow path structures were obtained. . In order to evaluate the heat transfer capacity of the inner flow channel, the integrated heat transfer coefficient of the inner flow channel is proposed as an index to quantify the heat transfer capacity. The analysis shows that the pressure drop at the entrance and exit of the diffuser rib is smaller than that of the other three structures, which is suitable for cooling the inner flow channel of copper roller.