为进一步提升钼接头的力学性能,采用电子束焊接方法,并分析接头的微观结构、力学性能和缺陷.实验结果表明:焊缝的平均硬度为 210 HV,热影响区的平均硬度为 202 HV,均高于母材;接头的均匀抗拉强度为 280 MPa;断裂位置位于焊缝处,属于脆性断裂;断口位置位于焊缝中,被确定为准劈裂断裂;在焊接区观察到气孔和裂纹缺陷,气孔由熔池中未逸散的氧气形成,裂纹被确认为凝固裂纹和低塑性脆化裂纹.该研究结果可为钼接头力学性能的提升提供参考依据.
在数控机床制造领域,机械组件装配是确保设备性能和质量的关键环节.通过创新工艺策略和应用新颖的装配方法,能够提高装配的效率、准确性和一致性.例如,预装配验证、精确定位连接和功能测试调试等步骤,为装配过程注入了新的思路和方法.这些创新措施推动了数控机床制造的技术进步和产业升级,满足了市场对高质量、高精度设备的需求.
Traditional small and micro mold manufacturing enterprises have problems such as lack of information management level, personnel awareness of information is relatively weak, this paper aims at moderate management granularity, convenient operation and low application cost, developed a mold production information management system. The business flow and data flow of small and micro mold enterprises are analyzed, the system framework is constructed, and the functional modules and their sub-functions are subdivided. Based on the analysis of the application requirements of the system, the production planning tool and enterprise knowledge base retrieval model are constructed. Based on the secondary development of IDEA software, the construction and deployment of the system were completed, and the feasibility and effectiveness of the mold production information management system was verified.
In order to solve the problem of low efficiency and poor effect of traditional artificial fixed-point detection, a granary pest monitoring system based on Field Programmable Gate Array（FPGA） and OpenMV was designed. The system uses the neural network algorithm, builds the FPGA acquisition system, briefly describes its working principle and the concrete implementation steps. In FPGA control part, OV5650 image acquisition module, I~2C data transmission module, register module,image preprocessing module and Thin Film Transistor（TFT） display module are used. OpenMV uses an image analysis module and an I~2C data transfer module. Using neural network algorithm and image preprocessing module, the system can process and collect information, and can calculate and analyze image information, the utility model has the advantages of small size, high accuracy,high definition, miniaturization and real-time monitoring, and can meet the needs of industry.
目前,甘肃地区叶类菜的收获主要以人工为主.为提高收获效率,通过查阅资料和调研现有产品,使用理论分析计算及三维建模仿真等方法设计了一款适用于甘肃丘陵山区种植特点的紧凑型自动收集叶菜收获机.
