• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Conference on Photon Processing in Microelectronics and Photonics Jan 21-24, 2002 San Jose, USA >SHADOW ― A New Welding Technique
【24h】

SHADOW ― A New Welding Technique

机译：SHADOW ―一种新的焊接技术

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The new welding technique "SHADOW ― Stepless High Speed Accurate and Discrete One Pulse Welding" is introduced. SHADOW means the use of a single pulse to generate a quasi continuous weld of several millimeters in length. The processing time is defined by the pulse duration of the pulsed laser. At present, a state-of-the-art laser is capable of a maximum pulse duration of 20 ms. The variation of the laser power depending on time is a vital capability of the pulsed laser to adapt the energy deposition into the workpiece (pulse shaping). Laser beam welds of several watch components were successfully performed (for further information see paper 4637-77 "New Applications of Laser Beam Micro Welding in Watch Industry"). Similar metals like crowns and axes made out of stainless steel have been welded using pulsed laser radiation. Applying a series of about 130 single pulses for the crown-axis combination the total energy accumulates to 19.5 J, The use of the SHADOW welding technique reduces the energy to 2.5 J. While welding dissimilar metals like stainless steel and brass, the SHADOW technique has even more advantages. Gearwheels made out of brass have been joined to axes made out of stainless steel. Common pulse mode welding generates a considerable amount of contamination but SHADOW welding reduces drastically the contamination as well as the distortion. Laser beam welding of copper has a low process reliability due to the high reflection and the high thermal conductivity. SHADOW welds of 3.6 mm length were performed on 250 μm thick copper plates with very high reproducibility. As a result, a pilot plant for laser beam welding of copper plates has been set up. The work to be presented has partly been funded by the European Commission in a project under the contract BRPR- CT-0634.
机译：引入了新的焊接技术“ SHADOW-无级高速精确和离散一脉冲焊接”。 SHADOW表示使用单个脉冲来生成长度为几毫米的准连续焊缝。处理时间由脉冲激光的脉冲持续时间定义。目前，最先进的激光器具有最大20 ms的脉冲持续时间。激光功率随时间的变化是脉冲激光适应能量沉积到工件中（脉冲整形）的重要能力。成功完成了多个钟表组件的激光束焊接（有关更多信息，请参见论文4637-77“激光束微焊接在钟表行业中的新应用”）。类似的金属，例如由不锈钢制成的冠和轴，已使用脉冲激光辐射进行了焊接。对冠轴组合施加一系列大约130个单脉冲，总能量累积到19.5 J，使用SHADOW焊接技术可将能量降低到2.5J。在焊接异种金属（如不锈钢和黄铜）时，SHADOW技术具有甚至更多的优势。黄铜制成的齿轮已连接到不锈钢制成的轴上。普通脉冲模式焊接会产生大量污染，但是SHADOW焊接会大大减少污染和变形。由于高反射率和高导热率，铜的激光束焊接工艺可靠性低。在250μm厚的铜板上进行3.6 mm长的SHADOW焊缝，可重复性很高。结果，已经建立了用于铜板激光束焊接的中试设备。待提交的工作部分由欧盟委员会根据BRPR-CT-0634合同的项目资助。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号