A rapid prototyping method for infrared pre-cured water-soluble core
A technology of water-soluble cores and infrared rays, which is applied in the direction of cores, mold components, molds, etc., can solve the problems of high production cost, short service life, and low core strength of personalized products, and achieve easy water loss and improved Strength, solve the effect of short service life
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Embodiment 1
[0042] The rapid prototyping method of a kind of infrared pre-cured water-soluble core of the present embodiment comprises the following steps:
[0043] S100, configure the spray liquid, mix water and additives evenly, and prepare an aqueous solution with a viscosity of 1-10 cps and a pH value of 7;
[0044] S200, micro-droplet liquid spraying forming and infrared heating pre-solidification, the molding sand is spread on the lifting table 163, and the liquid spraying device 122 sprays the aqueous solution configured in S100 according to the micro-droplet liquid spraying path generated by the solid model of the core. After the micro-droplet spraying is completed, the infrared heating plate 180 is turned on to perform infrared heating and curing on the layer. After curing, the elevating table 163 descends by 0.01-1 mm to complete the follow-up micro-droplet liquid spraying process and infrared heating pre-curing process on discrete levels in sequence until the liquid spraying an...
Embodiment 2
[0061] The above-mentioned "infiltration" can also be realized by other means, such as by spraying, a rapid prototyping method of infrared pre-cured water-soluble core in this embodiment, including:
[0062] S100, configure the spray liquid, dissolve water, polyvinyl alcohol, sodium chloride, sodium carbonate, and oxalic acid in water, and configure it into an aqueous solution with a viscosity of 3 cps and a pH value of 7;
[0063] S200, micro-drop liquid spray forming of water-soluble core and intermittent infrared heating pre-curing, lay 100 / 140 mesh silica sand on the lifting workbench, and the liquid spray device 122 sprays the micro-drop liquid spray path generated by the solid model of the core For the aqueous solution prepared in S100, after the spraying of the droplets on the layer is completed, the infrared heating plate 180 is turned on to perform intermittent infrared heating and curing on the layer. After curing, the elevating table 163 descends by 0.1 mm, and sequ...
Embodiment 3
[0068] The rapid prototyping method of a kind of infrared pre-cured water-soluble core of the present embodiment comprises:
[0069] S100, configure the spray liquid, dissolve water, polyethylene glycol, polyacrylamide, potassium chloride, potassium carbonate, and citric acid in water, and configure it into an aqueous solution with a viscosity of 2 cps and a pH value of 7;
[0070] S200, droplet spray forming of water-soluble core and continuous infrared heating pre-curing, mix 70 / 100 mesh silica sand and 100 / 140 mesh magnesia sand in a ratio of 7:3 and spread them on the lifting workbench 163 , the liquid spraying device 122 sprays the aqueous solution configured in S100 according to the droplet spraying path generated by the core solid model, and after the liquid spraying of the droplets on the layer is completed, the infrared heating plate 180 is turned on to perform infrared heating and pre-curing on the layer. After curing, the elevating table 163 descends by 0.2 mm to co...
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