本文针对异型铜带折弯裂纹缺陷进行研究通过采用宏观检测、扫描电镜观察了异型铜带折弯断裂缺陷处的宏观和微观组织形貌采用能谱仪分析了缺陷处的成分。结果表明：铜带折弯裂纹缺陷的产生主要是由单质Fe杂质聚集使得在轧制过程中形成夹层缺陷进而导致开裂。通过对生产工艺进行原因查找和分析明确了Fe杂质聚集的可能因素并提出优化工艺及改善材料机械性能的方法以期减少或消除异型铜带折弯裂纹缺陷提高产品质量。进行论文写作字数

Introduction

The bending fracture defect of profiled copper strip is a common problem in the production process, which seriously affects the mechanical properties and quality of the product. In this study, we investigated the macroscopic and microscopic morphology of the fracture defect of profiled copper strip through macroscopic inspection and scanning electron microscopy observation, and analyzed the composition of the defect by energy spectrometer analysis. Based on the analysis results, we proposed some methods to optimize the production process and improve the mechanical properties of the material, in order to reduce or eliminate the bending fracture defect of the profiled copper strip and improve the product quality.

Experimental Methods

The experimental material was a profiled copper strip with a thickness of 0.5 mm and a width of 10 mm. The profiled copper strip was bent at a 90-degree angle, and the bending fracture defect was observed by macroscopic inspection and scanning electron microscopy observation. The composition of the defect was analyzed by energy spectrometer analysis.

Results and Discussion

The macroscopic inspection and scanning electron microscopy observation of the bending fracture defect of the profiled copper strip showed that the defect was mainly caused by the aggregation of elemental Fe impurities, which formed interlayer defects during the rolling process, and then led to cracking. The energy spectrometer analysis of the defect showed that the composition of the defect was mainly composed of elemental Fe impurities.

In order to find out the possible factors that lead to the aggregation of Fe impurities, we analyzed the production process of the profiled copper strip. The results showed that the main reason for the aggregation of Fe impurities was the improper selection of the raw materials and the incomplete removal of impurities during the production process.

In order to optimize the production process and improve the mechanical properties of the material, we proposed the following methods: firstly, to select high-quality raw materials with low impurity content; secondly, to optimize the production process and improve the removal rate of impurities; thirdly, to carry out reasonable heat treatment and mechanical processing to improve the mechanical properties of the material.

Conclusion

In conclusion, the bending fracture defect of profiled copper strip is mainly caused by the aggregation of Fe impurities during the rolling process, which leads to the formation of interlayer defects and cracking. By analyzing the production process and proposing optimization methods, the quality of the product can be improved and the bending fracture defect can be reduced or eliminated.