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Do higher-powered lasers cause more residual stress in the part? As more powerful laser powder bed fusion machines become available, we are often asked about the effect of higher heat from more powerful lasers. Some people assume that using a 1-kW laser printing at 120-micron layer thickness compared with a 400-watt laser at 30 microns creates more residual stress and warping because the former puts so much heat into the part. The problem with this thinking is that a higher-powered laser and a faster build rate don’t necessarily result in more heat per unit of area. The actual energy density applied to the part might be less than with a lower-powered laser. But more significantly, energy density isn’t the most important influence. Residual stress is more closely related to cooling rate and how you control other factors in the process. If warping is a concern for your part, our application engineers can help to adjust parameters on an individual basis. Read more additive manufacturing myths at https://lnkd.in/gT6Yj9Re What other additive manufacturing myths do you get asked about? #AdditiveManufacturing #MetalAM #MetalAdditiveManufacturing #Industrial3DPrinting #Manufacturing #MaterialsScience #PowderBedFusion #LPBF

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