通过制备硬质合金试样,利用扫描电子显微镜对试样进行数字图片获取,然后进行图像二值化、降噪及边界提取等以获得微观结构模型。采用三点弯曲建立有限元模型,并进行数值模拟,得到仿真结果与试验结果相近。机器视觉技术能够客观、正确分析硬质合金的横向断裂强度。 Through the preparation of the cemented carbide samples, the digital images of the samples were obtained by using a scanning electron microscope, and then the image binarization, noise reduction and boundary extraction were performed to obtain the microstructure model. The finite element model was established by three-point bending and the numerical simulation was carried out. The simulation results are similar to the experimental results. Machine vision technology can objectively and correctly analyze the transverse rupture strength of cemented carbide.