3D printing wax wire applied to lost foam casting and preparation method thereof

Abstract

The invention relates to a 3D printing wax wire applied to lost foam casting and a preparation method thereof. The material is prepared from 10 to 50Kg of hard wax, 10 to 50Kg of soft wax, 5 to 30Kg of tackifier, 0.1 to 1Kg of nucleating agent, 1 to 20Kg of polyolefin, 0.1 to 0.5Kg of antioxidant and 0 to 1Kg of toner. The preparation method comprises the following specific steps: weighing all ingredient raw materials according to ingredient proportions; mechanically and evenly mixing all the ingredients; then adding all the evenly-mixed ingredient raw materials into an extruding machine; drawing under 50 DEG C to 120 DEG C, cooling, air drying, diameter measuring, pulling, storing wires and winding to obtain the 3D printing wax wire with the uniform wire diameter. The material has the advantages of good strength, no easiness in being broken, good wax lost performance, small shrinkage, large-size printing, good antioxidant performance, recyclable and the like, and the material can replace traditional wax molds to be widely applied to the industrial field of lost foam casting.

Description

technical field [0001] The invention relates to the field of preparation of 3D printing materials, in particular to a 3D printing wax thread for lost foam casting and a preparation method thereof. Background technique [0002] Compared with traditional technologies, 3D printing wax molds have the advantages of cost saving, high intelligence, high complexity, and no need for molds. Therefore, the lost foam casting process can be widely used in precision casting industries such as jewelry. At present, 3D printing wax wire is used in FDM (Fused Deposition Type) 3D printers. Its low cost and large-scale printing characteristics make it have significant advantages in the field of casting. Chinese patent CN106317913A uses industrial casting wax, polyolefin resin, polyethylene wax, and stearic acid to prepare 3D printing wax lines. The material has thicker crystals and slower crystallization, which not only leads to poor printing accuracy, but also causes severe warping. , it is d...

AI Technical Summary

Problems solved by technology

Chinese patent CN106317913A uses industrial casting wax, polyolefin resin, polyethylene wax, and stearic acid to prepare 3D printing wax lines. The material has thicker crystals and slower crystallization, which not only leads to poor printing accuracy, but also causes severe warping. , it is difficult to achieve large-scale printing

In addition, the material has a low viscosity, which can lead to cracking during printing due to poor adhesion between layers

Chinese patent CN104693579B has prepared printing wax powder with wax powder, stearic acid or stearate, white carbon black, carbon black and chopped carbon fiber, but the existence of white carbon black, carbon black and chopped carbon fiber is also unfavorable for lost foam casting

Chinese patent CN105504836A prepared low penetration paraffin wax for 3D printing by using paraffin wax, tackifier, antioxidant, tough polymer, plasticizer, high hardness polymer, low shrinkage resin, inorganic filler, dyestuff and phase transfer agent , but tough polymers, high-hardness polymers, low-shrinkage resins and inorganic fillers are difficult to volatilize at high temperatures, and it is difficult to apply to lost foam casting

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