选择光纤激光焊接机的脉冲宽度可考虑以下3个因素：为了达到一定的焊接强度要求，确定最小的熔深所需要的脉宽；确定光纤激光焊接机的脉冲宽度所对应的热通量密度的调整范围；即在所允许的热影响区的限制下，可能选取的最大脉宽。
Choosing the pulse width of the optical fiber laser welding machine, the following 3 factors are considered: in order to meet the requirements of the welding strength, the pulse width required for the minimum penetration is determined; the adjustment range of the heat flux density corresponding to the pulse width of the optical fiber laser welder is determined; that is, under the allowable heat influence area, it may be selected. The maximum width of the pulse.
对于一台激光焊接机能否稳定地运用于生产保证激光焊接机焊接质量是很重要的。对此类激光焊接机，脉宽的选取主要决定于焊点形成牢固可靠的熔融焊接时，热通量密度变化的可允许范围。熔深要求大于0.33mm的一类焊接，脉宽选取主要决定于熔深。
It is very important for a laser welding machine to be used in production to ensure the welding quality of laser welding machine. For this type of laser welding machine, the choice of the pulse width is mainly determined by the allowable range of heat flux density change when the solder joints form solid and reliable welding. The weld width is greater than 0.33mm, and the pulse width is mainly determined by the penetration depth.
光纤激光焊接机的脉冲宽度由熔深与热影响分区确定，脉宽越长热影响区越大，熔深是随脉宽的1/2次方增加。但脉冲宽度的增大会降低峰值功率，因此增加脉冲宽度一般用于热传导焊接方式，形成的焊缝尺寸宽而浅，尤其适合薄板和厚板的搭接焊。了解脉宽对于光纤激光焊接机的焊接加工来说是非常重要的。
The pulse width of the fiber laser welding machine is determined by the penetration depth and the thermal influence zoning. The longer the pulse width is, the larger the heat affected zone, and the penetration depth increases with the 1/2 power of the pulse width. However, the increase of pulse width will reduce the peak power, so increasing the width of the pulse is generally used in the heat conduction welding. The weld size is wide and shallow, especially suitable for lap welding of thin plates and thick plates. Understanding pulse width is very important for the welding process of fiber laser welding machine.
根据各方面的资料，我们知道激光焊接机脉冲宽度的选择可按以下3个原则来确定：对于熔深需要在0.11mm以下的激光焊接，若对热影响区，或者说热损伤区有严格的要求，则脉宽主要由热影响区来确定，即在热损伤区允许的情况下，脉宽选在1.5ms左右为好。对于熔深需要在0.1-0.2mm、对焊点仅有强度要求、对热影响区无严格要求的一类单次脉冲微型焊接，大部分金属的激光脉宽选择在3ms左右。
According to all the data, we know that the selection of the pulse width of the laser welder can be determined according to the following 3 principles: for the laser welding under 0.11mm for the penetration, the pulse width is determined mainly by the heat affected zone in the heat affected zone, or in the heat damage zone, that is, the condition allowed in the thermal damage zone. At the same time, the pulse width is about 1.5ms. For the melting depth, a kind of single pulse micro welding, which needs only 0.1-0.2mm, only strength requirements for solder joints and no strict requirements for the heat affected zone, is selected for the laser pulse width of most metals at about 3MS.
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