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介绍了利用变长线扫描激光烧结技术制造金属零件的基本原理。在线扫描激光烧结成型实验装置上对覆膜９８Ｆｅ２Ｎｉ合金粉末进行了烧结成型试验，研究了铺粉厚度、预热温度、激光功率、扫描速度及扫描方向等工艺参数对烧结成型性能的影响关系。
The basic principle of manufacturing metal parts by using variable length line scanning laser sintering technology is introduced. Sintering test on the coated 98Fe2Ni alloy powder was carried out on an on-line scanning laser sintering forming experimental device. The influence of processing parameters such as thickness of coating powder, preheating temperature, laser power, scanning speed and scanning direction on sintering properties was studied.