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发明公开
CN110064756A 一种选区激光熔化成型的方法 无效 - 驳回

一种选区激光熔化成型的方法
摘要：
本发明属于选区激光熔化成型技术领域。为了解决采用现有选区激光熔化成型方法获得的成型件存在内部有气孔以及表面精度差的问题，本发明公开了一种选区激光熔化成型的方法。该方法具体包括以下步骤：步骤S1，进行铺粉操作；步骤S2，采用第一热源对粉末层进行扫描处理；步骤S3,采用第二热源对粉末固态层进行扫描处理；步骤S4，重复步骤S1至步骤S3，进行逐层的粉末铺设和扫描操作，直至完成零部件的制备；其中，第一热源的能量密度小于第二热源的能量密度。采用本发明的方法进行选区激光熔化成型操作，可以避免成型件内部出现气孔，提升表面精度，获得高质量的成型件。
摘要（英）：

The invention belongs to the technical field of selective laser melting forming, and discloses a selective laser melting forming method. By means of the method, the problems of internal air holes andpoor surface precision of a formed part obtained by adopting an existing selective laser melting forming method are solved. The method specifically comprises the following steps of 1, carrying out powder spreading; 2, scanning a powder layer by using a first heat source; 3, scanning a powder solid layer by using a second heat source; and 4, repeating the steps 1 to 3, and carrying out the operations of power laying and scanning layer by layer until parts are prepared, specifically, the energy density of the first heat source is smaller than that of the second heat source. By adopting the method to carry out the selective laser melting forming operation, the air holes in the formed part are avoided, the surface precision is improved, and the formed part with high quality is obtained.

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