随着现代激光技术的发展，激光在不同行业领域的应用也更加深入， QCW准连续激光器的焊接技术已经广泛应用于3C领域，如手机各类模组、中板盖板等各种工业制造中。
With the development of modern laser technology, the application of laser in different industries is also deeper. The welding technology of QCW fiber laser has been widely used in 3C fields, such as the modules of mobile phone, medium plate covers and other industrial manufacturing.
QCW准连续激光器的点焊应用正在快速替代传统的Nd：YAG激光器。与传统Nd：YAG激光器相比，QCW准连续激光器拥有更优的加工稳定性。
Spot welding applications for QCW fiber lasers are rapidly replacing traditional Nd:YAG lasers. Compared with traditional Nd:YAG lasers, QCW fiber lasers have better processing stability.
针对QCW准连续激光器在精密焊接领域应用的稳定性，本期【Rayclass | 锐课堂】我们用锐科激光150W的QCW准连续光纤激光器做了相关实验分析。
首先我们来看看锐科激光的几款QCW准连续光纤激光器产品主要参数及其应用。
For the stability of QCW fiber laser in precision welding field, the parameters of the QCW fiber laser and its applications are shown in the table below.
|
型号 |
峰值功率 （W） |
单脉冲能量（J） |
脉宽 （ms） |
行业应用 |
|
RFL-QCW75 |
750 |
7 |
50 |
3C精密焊接、切割、打孔 |
|
RFL-QCW150 |
1500 |
15 |
50 |
3C精密焊接、切割、打孔 |
|
RFL-QCW450 |
1500 |
0.9 |
0.6 |
3C精密焊接、打孔 |
|
Model |
Peak Power （W） |
Singl Pulse Energy（J） |
Pulsed Width （ms） |
Industry Application |
|
RFL-QCW75 |
750 |
7 |
50 |
3C precision welding, cutting, punching |
|
RFL-QCW150 |
1500 |
15 |
50 |
3C precision welding, cutting, punching |
|
RFL-QCW450 |
1500 |
0.9 |
0.6 |
3C precision welding, punching |
1）
试验材料
Experiment Material
2.5mm厚的304不锈钢
2.5mm thick 304 stainless steel
2）
试验设备
Experiment Equipment
150W QCW准连续光纤激光器
扫描振镜激光焊接平台
150W QCW Fiber Laser
Scanning galvanometer laser welding platform
3）
试验方法
Experiment Method
分别在2.5mm厚304不锈钢上打出50个焊点，通过测量焊点尺寸，分析焊点均匀度及激光器出光稳定性。
50 solder joints were drilled on 2.5mm thick 304 stainless steel, and the solder joint uniformity and laser light stability were analyzed by measuring the solder joint size.
4）
试验过程
Experimental Procedure
针对不同功率段，不同脉宽，我们进行了以下试验设计。
For the different power segments and pulsed widths, we carried out the following experimental design.
|
峰值功率 Peak Power（W） |
脉宽 Pulsed Width（ms） |
单脉冲能量 Single Pulse Energy（J） |
焊点尺寸 Solder Joint Size |
熔深 Melt Depth |
|
300 |
2 |
0.6 |
||
|
4 |
1.2 |
|||
|
8 |
2.4 |
|||
|
10 |
3 |
|||
|
500 |
2 |
1 |
||
|
4 |
2 |
|||
|
8 |
4 |
|||
|
10 |
5 |
|||
|
750 |
2 |
1.5 |
||
|
4 |
3 |
|||
|
8 |
6 |
|||
|
10 |
7.5 |
|||
|
1000 |
1 |
1 |
||
|
2 |
2 |
|||
|
4 |
4 |
|||
|
8 |
8 |
|||
|
1500 |
0.5 |
0.75 |
||
|
1 |
1.5 |
|||
|
2 |
3 |
|||
|
3 |
4.5 |
5）
试验结果
Experiment Result
从图1中可以看到，从外观上来看，焊点尺寸一致性很好，焊点形态饱满，圆度很高。
As shown in Figure 1, the solder joint size is very consistent, the solder joint shape is full and the roundness is high.
图1 焊点图，其中峰值功率为750W，脉宽为2ms
Figure 1 Solder joint diagram with peak power of 750W and pulse width of 2ms
接下来，再从实际测量每个焊点尺寸来看看：
（1）下图是峰值为300W，脉宽分别为2ms、4ms、8ms和10ms的焊点尺寸与测试次数图。下表是根据下图统计而来的数据分析表。从表中可以得知焊点尺寸偏差范围在2.1%～7.5%，焊点尺寸一致性很好。
The figure below shows the solder joint size and test times with a peak value of 300W and pulse widths of 2ms, 4ms, 8ms, and 10ms respectively. The following table is a data analysis based on the statistics in the figure below. It demonstrated that the solder joint size deviation ranges from 2.1% to 7.5%, so solder joint size is consistent.
|
焊点尺寸 laser joint size |
300W×2ms |
300W×4ms |
300W×8ms |
300W×10ms |
|
最大值 Maximum |
0.32 |
0.34 |
0.38 |
0.42 |
|
最小值 Minimum |
0.31 |
0.32 |
0.34 |
0.36 |
|
平均值 average |
0.31 |
0.33 |
0.36 |
0.39 |
|
上偏差 Upper deviation |
2.08% |
3.85% |
7.45% |
7.48% |
|
下偏差 Lower deviation |
-2.69% |
-4.04% |
-5.98% |
-6.21% |
（2）下图是峰值为500W，脉宽分别为2ms、4ms、8ms和10ms的焊点尺寸与测试次数图。下表是根据下图统计而来的数据分析表。从表中可以得知焊点尺寸偏差范围在2.1%～7.1%，焊点尺寸一致性很好。
The figure below shows the solder joint size and test times with a peak value of 500W and pulse widths of 2ms, 4ms, 8ms, and 10ms respectively. The following table is a data analysis based on the statistics in the figure below. It demonstrated that the solder joint size deviation ranges from 2.1% to 7.1%, so solder joint size is consistent.
|
焊点尺寸 laser joint size |
500W×2ms |
500W×4ms |
500W×8ms |
500W×10ms |
|
最大值 Maximum |
0.36 |
0.47 |
0.59 |
0.65 |
|
最小值 Minimum |
0.32 |
0.45 |
0.55 |
0.62 |
|
平均值 average |
0.34 |
0.46 |
0.57 |
0.64 |
|
上偏差 Upper deviation |
5.80% |
1.81% |
3.15% |
2.65% |
|
下偏差 Lower deviation |
-7.14% |
-1.89% |
-4.54% |
-2.07% |
（3）下图是峰值为750W，脉宽分别为2ms、4ms、8ms和10ms的焊点尺寸与测试次数图。下表是根据下图统计而来的数据分析表。从表中可以得知焊点尺寸偏差范围在2.0%～5.3%，焊点尺寸一致性很好。
The figure below shows the solder joint size and test times with a peak value of 750W and pulse widths of 2ms, 4ms, 8ms, and 10ms respectively. The following table is a data analysis based on the statistics in the figure below. It demonstrated that the solder joint size deviation ranges from 2.0% to 5.3%, so solder joint size is consistent.
|
焊点尺寸 laser joint size |
750W×2ms |
750W×4ms |
750W×8ms |
750W×10ms |
|
最大值 Maximum |
0.39 |
0.54 |
0.70 |
0.80 |
|
最小值 Minimum |
0.36 |
0.51 |
0.65 |
0.72 |
|
平均值 average |
0.37 |
0.52 |
0.68 |
0.76 |
|
上偏差 Upper deviation |
4.42% |
2.58% |
3.32% |
5.20% |
|
下偏差 Lower deviation |
-4.17% |
-2.02% |
-4.22% |
-5.33% |
（4）下图是峰值为1000W，脉宽分别为4ms和8ms的焊点尺寸与测试次数图。下表是根据下图统计而来的数据分析表。从表中可以得知焊点尺寸偏差范围在3.2%～7.3%，焊点尺寸一致性很好。
The figure below shows the solder joint size and test times with a peak value of 1000W and pulse widths of 4ms and 8ms respectively. The following table is a data analysis based on the statistics in the figure below. It demonstrated that the solder joint size deviation ranges from 3.2% to 7.3%, so solder joint size is consistent.
|
焊点尺寸 laser joint size |
1000W×4ms |
1000W×8ms |
|
最大值 Maximum |
0.59 |
0.74 |
|
最小值 Minimum |
0.51 |
0.69 |
|
平均值 average |
0.55 |
0.71 |
|
上偏差 Upper deviation |
6.47% |
3.87% |
|
下偏差 Lower deviation |
-7.27% |
-3.16% |
6）
结论
Conclusion
QCW激光器良好的焊点尺寸一致性，表示其功率输出十分稳定，这也是其相较于传统Nd：YAG激光器的一个明显优势。
The solder joint size consistency of the QCW fiber laser indicates that its power output is stable, which is a significant advantage over the traditional Nd:YAG laser.
正是因为功率输出的稳定性，才能保证在大批量生产时，产品焊接质量的稳定性。
It is the stability of power output that ensures the stability of welding quality in mass production.
除了焊点尺寸，功率输出稳定性的另一个衡量标准是熔深，后期【Rayclass | 锐课堂】我们将继续用熔深实验数据进行介绍。
In addition to solder joint size, another measure of power output stability is fusion depth, keep following next Rayclass and see you soon.
