Method for reinforcing strength of sand core used for car hot stamping mould and obtained by 3D (three-dimensional) printing
A technology of hot stamping dies and 3D printing, which is applied in cores, manufacturing tools, casting molding equipment, etc., and can solve problems such as insufficient high-temperature strength of coated sand cores
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[0013] The specific implementation manner of the invention will be further described below in conjunction with the accompanying drawings and the technical scheme.
[0014] When the hot stamping mold is pouring, because there are water channels inside, it will be divided into sand mold and sand core part during parting. Such as figure 1 part of the sand core. Since the printing material is coated sand, the coated sand core may break when the molten steel is poured, so the sand core needs to be strengthened. Before printing, leave a conformal through hole or channel in each single water channel in the sand core CAD data, as shown in Figure 2(a) to leave a conformal through hole in the water channel sand core, as shown in Figure 2( b) To leave a conformal channel in the channel sand core. Then convert the CAD data into 3D printing data for printing. There are through holes or through grooves in the printed sand cores, and then molybdenum wires are embedded in the through holes...
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