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固化工艺对树脂基高速打磨磨石性能影响

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为优化高速钢轨打磨磨石的质量设计,通过调控磨石固化温度制度与固化时间等固化工艺参数,制备树脂交联程度不同的高速钢轨打磨磨石,探究固化工艺参数对高速钢轨打磨磨石综合性能的影响,通过抗压测试说明了磨石力学性能随着固化工艺的变化.利用打磨试验台量化不同固化工艺下磨石打磨性能的差异.然后对打磨后的磨石与钢轨样品进行表面质量分析,评价加工后表面质量的优劣.最后从磨石的力学性能、打磨性能以及打磨后钢轨表面质量等进行综合评价,总结固化温度与固化时间对于磨石性能的影响.结果表明:在试验范围内,增加固化温度和固化时间均有助于提高磨石的力学性能.随着固化温度与固化时间的增长,打磨后钢轨表面质量得到有效提升,然而磨石的打磨性能存在变差的趋势.
Effect of Curing Process on Properties of Resin Based High Speed Grinding Wheel and Its Regulation Mechanism
In order to optimize the quality design of high-speed rail grinding stones,the grinding wheels with different crosslinking degrees of resin were prepared by adjusting the curing process parameters such as the curing temperature and curing time,to investigate the influence of curing process parameters on the comprehensive performance of grinding stones.The changes in the mechanical properties of grinding stones with curing process were illustrated by compressive test.The differences of grinding properties of grinding stones under different curing processes were quantified by the grinding equipment.Then the surface quality analysis was conducted on the polished grinding wheels and rail samples to evaluate the advantages and disadvantages of the processed surface quality.Finally,the effects of curing temperature and curing time on the properties of the grinding wheels were summarized from the comprehensive evaluation of the mechani-cal properties,grinding properties and rail surface quality after grinding.The results show that in the test range,the in-crease of curing temperature and curing time is helpful to improve the mechanical properties of the grinding stone.With the increase of curing temperature and curing time,the surface quality of rail can be effectively improved after grinding,but the grinding performance of the grinding stone has a tendency to deteriorate.

rail grindinggrinding stonephenolic resincuring temperaturecuring time

张胜、刘长宝、樊小强、朱旻昊

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西南交通大学机械工程学院,四川成都 610031

西南交通大学先进材料教育部重点实验室,四川成都 610031

钢轨打磨 磨石 酚醛树脂 固化温度 固化时间

国家自然科学基金

52075458

2024

铁道学报
中国铁道学会

铁道学报

CSTPCD北大核心
影响因子:0.9
ISSN:1001-8360
年,卷(期):2024.46(1)
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