Aecc Commercial Aircraft Engine Co., Ltd.

Aecc Shanghai Commercial Aircraft Engine Manufacturing Co., Ltd.

Liming Lei

Yali Li

Xiaohui Chen

Jun Fu

Yanli He

A method for prefabricating pore defects by controlling a SLM process, including performing laser scanning on a specified metal melt layer (LY) according to a first scan path (P) and a second scan path. The first scan path (P) and the second scan path (P) have a path overlap zone (A), the path overlap zone (A) has a predetermined width, and laser energy input superimposed in the path overlap zone (A) is controlled to reach a predetermined energy value, whereby keyholes are formed at a plurality of positions in a lengthwise direction of the path overlap zone (A), the specified metal melt layer (LY) is taken as a defect layer, and the keyholes in the path overlap zone (A) is taken as pore defects.

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Shanghai, China

Liming Lei