花岗石锯切过程声发射信号特征的实验  被引量:5

Experiment on the Characteristic of Acoustic Emission in Circular Sawing of Granite

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作  者:张美琴[1] 高振[2] 吴海融[2] 李远[2] 黄国钦[2] 

机构地区:[1]厦门理工学院机械与汽车工程学院,福建厦门361021 [2]华侨大学制造工程研究院,福建厦门361021

出  处:《华侨大学学报(自然科学版)》2015年第6期615-619,共5页Journal of Huaqiao University(Natural Science)

基  金:国家科技支撑计划项目(2012BAF13B04);国家自然科学基金资助项目(51175194);福建省教育厅A类科技项目(JA13019);福建省厦门市科技计划指导性项目(3502Z20077003)

摘  要:采用不同锯切参数对G603,G657,G654三种花岗石进行锯切实验,监测锯切过程工件上声发射信号和锯机主轴功率消耗,并以声发射均方值(AERMS)为特征值对实验结果进行分析.结果表明:锯切过程中,AERMS随着锯切深度和进给速度的增大而增大,随着锯片线速度的增大而减小;与锯切功率具有良好的线性正相关对应关系;不同花岗石锯切时,AERMS随锯切参数的变化趋势一致,但幅值存在明显差异,花岗石的抗压强度越高,AERMS值越大.Using different parameters, sawing experiments were carried out on three kinds of granites (G603, G654, G657), and acoustic emission (AE) and spindle power consumption were monitored during sawing processes. The experi- mental results were analyzed with the mean square value of AE (AEgus). The results show that AERMs increases with the increase of sawing depth and feeding speed, but decreases with the sawing speed, and has a good linear positive correla- tion relationship with sawing power. In sawing of different granites, AERMs tendencies with different sawing parameters are the same but thers is obvious difference in amplitude. And the higher the compressive strength of granite is, the larger the value of AMRMS becomes.

关 键 词:花岗石 锯切 声发射 锯切功率 抗压强度 

分 类 号:TG580.6[金属学及工艺—金属切削加工及机床] TG74

 

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