Space gridding printing method of 3D printing sand mold
A space grid, 3D printing technology, applied in the direction of mold, core, mold components, etc., can solve the problems of unsatisfactory compaction effect, large amount of binder, easy to appear pores, etc., to shorten the baking time, Reduces gas production and improves breathability
Active Publication Date: 2021-08-17
SHENYANG RES INST OF FOUNDRY
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Abstract
The invention relates to a space gridding printing method of a 3D printing sand mold. Regarding a single-material casting sand mold for a large casting, when three-dimensional modeling is carried out on the sand mold for casting, an original solid sand mold has a solid wall thickness with enough size and serves as a "facing sand layer" for resisting scouring resulting from molten metal during pouring, and space gridding is carried out on the other parts, so that the original solid state in the sand mold is changed into space gridding which is supported by multiple groups of space frameworks and is internally provided with loose sand not sprayed with a binder. The characteristic of one-time forming of a complex structure is directly achieved through 3D printing. A 3D printing method for the space gridding sand mold is provided. By changing the structure of a gridding area, "a substitute of the back sand layer" is printed out. According to the method, the gas evolution amount of the sand mold is reduced, the air permeability of the sand mold is improved, the interior of the sand mold is gridded, the addition amount of the binder can be reduced, the baking time of the sand mold is shortened, the cost is saved, and the method is applied to the technical field of casting production.
Application Domain
Additive manufacturing apparatusFoundry moulds +2
Technology Topic
Process engineeringMesh grid +5
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PUM
Property | Measurement | Unit |
Tensile strength | 1.1 | mPa |
Compressive strength | 4.25 | mPa |
Bending strength | 1.34 | mPa |
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