Indirect forming method for preparing metal product
A molding method and metal technology, applied in the field of additive manufacturing, can solve the problems of low density and lack of metallurgical bonding.
Active Publication Date: 2021-01-26
HUNAN FARSOON HIGH TECH
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Abstract
The invention provides an indirect forming method for preparing a metal product. The indirect forming method comprises the following steps of uniformly mixing polymer powder and metal powder accordingto the volume ratio of (1-5): (95-99) to prepare metal composite powder materials; placing the metal composite powder materials in selective laser sintering equipment with an optical fiber laser as alight source for sintering, so that a metal prototype blank is prepared, wherein the sintering process specifically comprises the steps of laying polymer composite powder materials with the layer thickness of 0.1-0.2 mm, and preheating the metal composite powder materials to the set temperature which is 10DEG C-150 DEG C lower than the melting point of the polymer powder; and placing a metal prototype blank into an inert gas sintering furnace for degreasing and sintering to obtain the metal product. According to the indirect forming method, support is not needed, and rapid forming is achieved; the preparation time is short; and a prepared metal part is high in density and size precision.
Application Domain
Increasing energy efficiency
Technology Topic
Erbium lasersPolymer composites +6
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PUM
Property | Measurement | Unit |
Particle size | 60.0 | µm |
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