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材料工程  2015 

熔接痕性能评价的WSt模型及其验证

DOI: 10.11868/j.issn.1001-4381.2015.09.008, PP. 46-52

Keywords: 熔体汇合角度,流动前沿温度,压力,WSt模型,RHCM

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Abstract:

提出采用熔体汇合角度、流动前沿温度、压力三个参数来表征熔接痕,构建了评价熔接痕性能优劣的WSt模型,基于此模型对比了相同工艺参数下快速变模温成型(RapidHeatCycleMolding,RHCM)与普通成型的熔接痕质量,并以导风板为对象进行了生产验证。结果表明快速变模温成型熔接痕的整体性能由普通成型的0.681提高到0.819,提高了20.3%;RHCM成型导风板熔接痕处的拉伸强度由普通成型的45.3MPa提高到53.8MPa,强度提高了18.8%,与WSt模型所预测的20.3%接近。

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