6系铝合金挤压棒中异物分析  

Analysis of Foreign Body in 6 Series Aluminum Alloy Extruded Bar

作　　者：吴楠 祝哮 谢方亮 孙亮 刘兆伟 张宇 WU Nan;ZHU Xiao;XIE Fang-liang;SUN Liang;LIU Zhao-wei;ZHANG Yu(Liaoning Zhongwang Group Co.,Ltd.,Liaoyang Liaoning 111003,China)

机构地区：[1]辽宁忠旺集团有限公司,辽宁辽阳111003

出　　处：《热处理技术与装备》2021年第5期42-44,共3页Heat Treatment Technology and Equipment

摘　　要：采用体式显微镜、光学金相显微镜、扫描电子显微镜及EDS等分析了6系铝合金挤压棒材在定尺锯切时异物缺陷产生和锯条断裂的原因。结果表明:异物与合金基体存在缝隙,无变形特征,化学组成与锯条相近,确认异物来自于锯条;在锯切过程中锯齿发生损坏脱落,碎屑脱落嵌入到挤压棒材内部,与后续高速进给锯条发生接触,造成锯条断裂,划伤棒材的横断面。The causes of foreign body defects and saw blade fracture during the fixed length sawing of 6 series aluminum alloy extruded bars are analyzed by means of optical microscopy, optical metallographic microscope, scanning electron microscope and EDS etc.. The results show that there is a gap between the foreign body and the alloy matrix, without deformation characteristics, and the chemical composition of foreign body is similar to that of the saw blade. It is confirmed that the foreign body comes from the saw blade. During the sawing process, the saw tooth is damaged and shedding, and the chippings are embedded in the extruded bar, which contact with the subsequent high-speed feeding saw blade, resulting in the fracture of the saw blade and scrscratch the cross section of the bar.

关 键 词：6系铝合金 挤压棒材 异物 缺陷 

分 类 号：TG146.21[一般工业技术—材料科学与工程]