| 1. | The results show that a certain extent , the other parameters constant , increasing power , increasing scanning speed , small grains become more dense ; the good and bad of metallurgical belt , the cellular crystal thickness and the availability and distribution of inclusions are affected by the parameters
结果表明：在一定范围内，其它工艺参数不变，增加功率，增大扫描速度，晶粒更趋致密细小；工艺参数影响冶金结合带的优劣、胞状晶区的厚薄以及夹杂物的有无和分布。 |
