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运用雷诺力学相似准则，采用Ｓｎ－Ｐｂ合金低速大熔滴，模拟研究了热喷涂熔滴碰撞基体后的扁平化过程．研究表明：粒子的结合性能与粒子的尺寸、结合面积、粘结力、粒子内部及界面的热应力有关．适当提高粒子碰撞速度、有效地粗化基体表面和采用预热或减缓粒子在塑性温度点以上的停留时间，可有效地提高粒子的结合面积、粘结力和释放粒子的热应力，从而提高粒子的结合强度．
Using the Reynolds mechanics similarity criterion, the low-velocity large droplet of Sn-Pb alloy was used to simulate the flattening process after the droplet of thermal spraying collided with the substrate. The results show that the bonding properties of the particles are related to the size of the particles, the bonding area, the bonding force, the thermal stress inside and at the interface of the particles. Appropriately increasing the particle collision speed, effectively roughening the surface of the substrate and preheating or slowing the residence time of the particles above the plastic temperature point can effectively improve the bonding area of the particles, the bonding force and release the thermal stress of the particles so as to improve the particle The bond strength.