Method used for improving manufacturing efficiency and precision of additive formed through powder bed fusion
An additive manufacturing and melting molding technology, applied in the field of additive manufacturing, can solve the problems of poor molding efficiency, molding accuracy, over-burning, and low molding accuracy and molding efficiency.
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Embodiment 1
[0017] When forming a specific layer of a product, use a heat source such as a laser or an electron beam with a smaller energy and spot diameter to scan the contour, and use a heat source such as a laser or an electron beam with a larger energy and spot diameter to scan the layer, such as figure 1 shown.
Embodiment 2
[0019] In a specific layer of a product, the minimum size of a certain area of the layer is smaller than the spot diameter of a heat source with a larger spot diameter, and the area is scanned by a heat source such as a laser or an electron beam with a smaller energy and spot diameter, such as figure 2 shown.
Embodiment 3
[0021] When molding a product, the two layers of powder bed near the upper surface are all scanned by heat sources such as lasers or electron beams with small energy and spot diameters, such as image 3 shown.
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