共查询到17条相似文献,搜索用时 62 毫秒
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根据双头摩擦焊机焊接过程质量控制的需要,研究了一套高采样精度的双头摩擦焊机测控系统.系统在Visual C++开发环境下编程.采用多媒体定时器控制采样精度,减小了由于Windows普通定时器定时精度差给系统造成的焊接缩短量和焊接时间等控制参数的测量误差.数据统计分析表明,系统采样精度高达1 ms,可保证两侧相对转速误差小于3.5 r/min、相对缩短量误差在0.1-0.5 mm以内.该系统采用模块化设计结构.包括数据采集、串口通信、绘制趋势曲线、焊接数据实时显示、动画演示焊接过程等功能模块.实际生产及试验表明,该测控系统控制精度高,运行高效、稳定. 相似文献
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轴向摩擦焊机上的径向摩擦焊 总被引:5,自引:0,他引:5
本文介绍了在轴向摩擦焊机上实现薄壁环径向摩擦焊试验的基本原理、工装夹具设计及工艺措施。首次在20T常规轴向摩擦焊机上完成了薄壁铜环与钢的径向摩擦焊工艺试验,也是国内首例径向摩擦焊试验。 相似文献
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针对水下结构物维修的需要,研制了液压驱动水下摩擦焊机。该摩擦焊机的主要特点是:主轴结构设计合理,能够满足高速重载运转的需要;主轴材料选择与密封设计,使得主轴可以长期应用于水下;主轴内部安装了转速传感器和磁致伸缩式位移传感器,能够很好地实现主轴转速和主轴位移测量;控制系统成功地实现了主轴转速、主轴进给速度和压力等焊接参数的自动控制,自动焊接程序可以根据塞棒烧损长度设置合适的焊接参数组合。试验表明,液压驱动水下摩擦焊机可以完成水下摩擦焊接,焊接接头强度超过母材强度的80%,对于海洋平台结构物的水下维修、牺牲阳极更换接线螺柱安装等具有较好的应用前景。 相似文献
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论述了将普通车床改装为连续驱动摩擦焊机的原理和方法。生产实践证明,这是一种行之有效的技术改造,其特点是投資少、见效快,焊接质量可靠。 相似文献
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液压式摩擦焊机具有能源消耗大、噪声、发热等缺点。提出一种无液压系统的摩擦焊机,利用变频电机和汽缸实现摩擦压力的施加,完成摩擦焊接。该摩擦焊机的设计步骤和方法包括:试验机的方案分析、驱动装置方案分析、传动装置主要元件的设计、控制装置方案分析、总体尺寸的设计。该摩擦焊机带有双摩擦棒,可用于试验不同材料经过摩擦焊接后的焊接组织性能,设计的焊机结构简单、节约能源、提高摩擦焊接精度和质量。 相似文献
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摩擦焊机可编程控制系统的研制 总被引:2,自引:1,他引:2
介绍了C609型可编程序控制器对摩擦焊工艺程序的控制以及对焊机检测电路、保护电路的控制,包括摩擦焊工艺流程逻辑图、PC的硬件接口及软件编程等,该PC系统结构简单,操作及修改程序容易,可靠性强,控制功能及精度亦优于原系统。 相似文献
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Yoshiaki Morisada Koki Tamashiro Masayoshi Kamai Rintaro Ueji Hidetoshi Fujii 《Welding International》2016,30(8):596-601
Much attention has been paid to FSW as a useful joining process that provides superior characteristics compared with conventional fusion welding. However, the FSW equipment must have a high stiffness due to the applied load and the tool torque, which increases the size of the equipment. Therefore, it is difficult to use the FSW technique on-site for repairs and/or hand-operated welding. In this study, the relationship between the FSW parameters and the process loads was investigated for the FSW with a counterbalanced tool and preheating to evaluate the possible miniaturization of the equipment. The results revealed that the counterbalanced tool concept with preheating was effective for the miniaturization of the equipment because it reduces the applied l and the tool torque during the FSW. Welding direction force Fx and transverse direction force Fy can be reduced below 70 N and 50 N respectively. 相似文献
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Study on heat efficiency of laser-TIG double-side welding 总被引:1,自引:0,他引:1
A series of laser-TIG double-side welding experiments for aluminum alloys were carried out to investigate the heat efficiency of the process. The melting efficiency was introduced to evaluate quantitatively the degree of the mutual effect of the laser and the arc. The results showed that the melting efficiency of laser-TIG double-side welding exceeded the sum of the laser and the arc taken separately. With the increase of heat input, the weld depth and melting efficiency of the laser and the arc were increased signifwantly. This, in fact, implies the strong mutual effect of the laser and the arc as heat sources joined simultaneously in the process. Comparatively, the higher efficiency of the laser constituent of heat sources plays the main role in the increase of the process efficiency. The phenomena of arc column convergence, increased laser absorptivity and the formation of heat accumulation region are the causes of the improvement of heat efficiency. 相似文献
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On basis of the finite element software DEFORM, the 2D coupled thermo-mechanical model of continuous drive friction welding of ring parts is established. The temperature and the flashes during the welding process are investigated. The results of numerical simulation show that the temperature of friction surface is higher than that of other region and the peak temperature increases with the increase of welding time. During the process of friction stage, no flash appears because of the low temperature and the small axial friction pressure. At the forging stage, the flashes appear, whose dimensions and bending degree increase with the increase of welding temperature. Moreover, with the increase of rotational velocity and axial forging pressure, the dimensions and the bending degree of flashes of continuous drive friction welding increase. 相似文献
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A heat source model for radial friction welding was proposed, which was determined by friction pressure, friction coefficient, material properties and extrusion speed of material. A 3 D model was established to analyze the continuous drive radial friction welding temperature field of 45 steel pipe. The influences of friction pressure, friction time and rotation speed on the temperature of the friction interface were analyzed. The results showed that the temperature on the friction inter face rapidly rose to a peak temperature in initial friction stage and kept constant in the stable friction stage. Welding parameters of friction pressure, friction time and rotation speed had few influences on the peak temperature, while the increase of friction pressure and rotation speed could shorten the time to reach the peak temperature. 相似文献