FIELD: additive technologies.
SUBSTANCE: invention relates to the field of additive technologies, in particular to a method for the additive production of three-dimensional products by welding a thread. The raw material in the form of a thread for additive production contains at least 40 vol.% of particles capable of sintering from metal, metal alloy, glass, ceramic material or a mixture thereof and a binding composition containing 5-15 wt.% of a polymer compatibilizer b1 of the total mass of the binding composition and 85-95 wt.% of a polymer binder component b2 of the total mass of the binding composition. The polymer binder component b2 is selected from a group consisting of a polymer mixture or a polymer alloy b2-1 containing at least the first and second polymers, wherein the glass transition temperature (TGT) of the first polymer is -20°C or lower, and the TGT of the second polymer is 60°C or higher; one, two or more block copolymers b2-2 containing at least the first polymer block and the second polymer block, wherein the first polymer block has the TGT in the range of -20°C or lower, and the second polymer block has the TGT in the range of 60°C or higher; and mixtures b2-3 of b2-1 and b2-2. The detail is obtained by forming the first layer of raw materials, forming at least one additional layer on top of the first layer to form a raw body, removing the binder to form a brown body, and sintering the brown body particles capable of sintering to form the detail.
EFFECT: invention provides the possibility to obtain details consisting of 95% or more of metal, metal alloy, metal oxide, glass ceramics or a mixture thereof, increasing the strength of the non-sintered material, cohesive ability and structural integrity, reducing the degree of shrinkage, increasing the strength and density of the sintered body.
17 cl, 7 dwg, 9 tbl, 20 ex
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Year |
Author |
Number |
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