但焊缝质量受激光对中点和点焊点的影响很大，应尽量避免采用激光对中及点焊。
Besides, centering and tack welding by laser beam should be avoided as centering point and tack-welding point can influence weld quality largely.
进而分析了点焊镀锌板的电极磨损对压痕深度与焊点质量的影响。
The effect of electrode wear on indentation depth and weld quality was studied for welding galvanization steels.
阐明了任意波形控制法和任意波形控制法点焊新工艺是解决焊点强度高又无飞溅这一对矛盾的有效途径。
The new spot welding technics of arbitrary waveform control is an effective approach to solve the contradiction of gain high strength joint but without splash.
研究结果表明：该方法能够实现对焊点焊接时间的实时控制，获得均匀稳定的焊缝成形。
The research indicates that this method can control the welding time of a weld and that the stable and uniform weld formation is acquired.
提出一种基于点焊过程信息采集和处理的焊点质量在线监测方法。
A new method is developed to monitoring joint quality based on the information collecting and processing in the spot welding.
以国产WP 370含磷高强度钢板为对象，研究了它的可焊性、点焊焊点的强度以及点焊工艺参数对它们的影响。
The spot weldability and the strength of single spot-welded joint of a chinese steel WP 370 were investigated, and the effects of welding parameters on it were also tested.
在焊点形成的过程中，点焊电流有效值的检测与控制是保证焊接质量的关键。
During the course of forming the welding spot, checking and controlling spot welding current value is the key to assure the welding quality.
在无铅化进程中，由于无铅焊点焊料的不同和焊接工艺参数的调整，必然会给焊点可靠性带来许多新的影响。
In the process of lead-free, because of the difference of lead-free solders and adjustment of technical parameter, we will face many new problems of reliability.
在现代汽车工业中，点焊广泛运用在车身中，焊点失效是导致车身失效的主要原因。
In the modern automotive industry, extensive use of spot-welding in the body, the solder joint failure is the main reason leading to vehicle failure.
在设计汽车骨架等薄壁点焊结构时，必须对薄壁构件焊点的疲劳强度进行精确评估。
In the design of thin-walled spot welding structures such as the automobile body structure, it is necessary to evaluate the fatigue strength of spot welding at the good accuracy.
电阻点焊过程动态信号蕴含着大量直接或间接反映焊点质量的动态信息。
Lots of dynamic information, which can directly or indirectly reflect the quality of welded spot, are included within the dynamic signals of resistance spot welding process.
采用A NSYS数值模拟软件，对点焊结构焊点附近的应力应变状况进行了详细的分析。
Stress and strain around welded spot of spot welding structure are analyzed in detail with ANSYS numerical simulation software.
并针对DP590GA焊点熔核中锌元素的残留现象，设计出加预热的双脉冲焊接规范，进一步改善其点焊接头的力学性能。
Aiming at the zinc residue in the weld joint nugget of DP590GA, a double-impulse welding parameter with preheating impulse is designed to further improve its mechanical properties of the weld joint.
管板单边电阻点焊由于其焊接结构的特殊性，生成熔核的外形为环状，其强度不能用传统的圆形焊点强度经验公式计算。
The strength of the ring nugget in sheet-to-tube single-sided spot welding is different from that of the button nugget in traditional sheet-to-sheet spot welding.
试验得出，WP 370钢板具有良好的点焊可焊性，位于可焊性区间中央的焊点力学性能优于边缘的焊点。
It was found that the weldability of WP 370 is satisfactory and the mechanical properties of the joints in the center of the weldability zone are better than that near the boundary.
试验得出，WP 370钢板具有良好的点焊可焊性，位于可焊性区间中央的焊点力学性能优于边缘的焊点。
It was found that the weldability of WP 370 is satisfactory and the mechanical properties of the joints in the center of the weldability zone are better than that near the boundary.
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