焊接

By analyzing and calculating work on the spectroscopic diagnostic results, the quantitative relationship between the electron density of laser induced plasma and linear heat input as well as the relationship between electron density and factor of absorption are deduced.

通过对激光等离子体光谱诊断结果的分析、计算，定量地得到了等离子体粒子密度与焊接线能量之间的函数关系以及粒子密度与吸收系数的函数关系。

The company is set research and development, production and sales into a professional welding accessories manufacturers.

本公司是集研究开发、生产、销售为一体的专业焊接配件生产厂家。

Traditionally, new welding conditions were studied by the accumulated experience of trial and error approach, which was not suitable to the development level of our countrys society and economy for it usually result in high cost and long lead-time.

传统上对摩擦焊接工艺的开发都是采用经验性"试错"的方法，这种方法的研制成本巨大，研究周期长，不适合我国社会经济发展的基本国情。

He thought his invention could replace acetylene in welding factories.

他认为他的发明可取代乙炔在焊接工厂。

Welding to materials like aluminum, copper, white metal, and brass that have low melting temperatures and are easily oxidized, can be facilitated by flushing the welding spot with nitrogen, argon, helium, carbon dioxide or some similar protective gas.

焊接那些像铝、铜、白合金、黄铜这些熔点很低、易于氧化的材料，使用氮气、氩气、氦气、二氧化碳或一些类似的保护气体，吹洗焊接焊点。

Analyzing the dynamic behavior of dislocations in the deformed metal at high temperature and high strain rate, a new theoretical model of dislocation dynamic behavior is put forward to describe the dynamic recrystallisation mechanism of the weld metal.

采用本文首次提出的测量摩擦界面温度的半自然热电偶测温法，并结合焊接过程中的急冷凝结组织分析、微区应变速率分析，以及摩擦扭矩测量等相关实验方法，测定了焊接过程中焊合区金属的组织及相应的热变形参数。

The results show that the plasticity zone and dynamically quiescent layer become fine equiaxed recrystallisation under the thermo-mechanical effect, the grains in the heat-affected zone grow up because of the effect of friction heat. When the rotation speed is 2 500 r/min and the welding time is 12 s, good joint is achieved, and the tensile shear strength of the joint reaches 9.24 kN. The tensile shear strength of spot increases with increasing tool rotation speed, with increasing welding time, the strength increases first, while then reduces. The microhardness of plasticity zone is high, but is slightly lower than that of the base metal, the minimum value of microhardness is in the heat affected zone. When the energy input of joint is high, the fracture type of spot is mode Ⅰ, and the tensile shear strength is high; on the contrary, when the energy input of joint is less the fracture type of spot is mode Ⅱ, and the strength is low.

结果表明：塑性区和动态静止层的晶粒在热和力作用下发生动态再结晶形成细小的等轴晶，热影响区的晶粒在摩擦热作用下长大变粗；搅拌头旋转速度为2 500 r/min，焊接时间为12 s时，可以获得力学性能较好的焊点，焊点的剪切强度达到9.24 kN；焊点的剪切强度随搅拌头旋转速度的增大而增大，随焊接时间的延长先增大后减小；塑性区的显微硬度较高，但略小于母材，接头显微硬度的最小值分布在热影响区；焊点热输入量较多时，接头为Ⅰ型断裂，焊点的剪切强度较高；焊点热输入量较少时，接头为Ⅱ型断裂，焊点的强度较低。

The thesis investigates 3D reconstruction of the welding robot's task space base on stereo vision, and 3D modeling of untextured weld environment is implemented.

本文基于立体视觉技术，针对遥控焊接机器人任务空间的三维重建进行了深入研究，实现了无纹理焊接环境的三维建模。

The test of the pipeline welding robot shows that the algorithm can improve the tracking accuracy of automatic welding.

管道焊接机器人的工艺试验表明：该算法可有效提高基于激光跟踪的管道焊接机器人跟踪精度。

Welds incorporating nickel, nichrome, platinum, plated wires and solid/stranded combinations are facilitated.

Hotspot焊接机可用来焊接比较难焊的线，像镍基合金、铂、镀层的线会比较容易。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！