A kind of regular porous metal material and its preparation method and application
A porous metal and metal technology, applied in the field of porous materials, can solve the problems of difficult to control the pore size and distribution of porous metal materials, uneven size and distribution, high cost, etc., and achieve excellent impact energy absorption capacity, pore size and uniform distribution Effect
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[0053] Correspondingly, for the structure of the regular porous metal material 2 above, the embodiment of the present invention also provides the following preparation method, the method for preparing the regular porous metal material 2 includes the following steps, and please refer to the attached Figure 1-11 :
[0054] S01. Prepare the metal unit cell 1, and the metal unit cell 1 is a hollow polyhedron;
[0055] S02. The metal unit cells 1 are stacked and connected in an array along the three-dimensional space direction.
[0056] Specifically, the structure of the metal unit cell in the above step S01 is the same as that of the metal unit cell 1 of the regular porous metal material 2 above, such as hollow trihedron, tetrahedron, tetrahedron, tetrahedron, etc., specifically as figure 2 , Figure 6 The metal unit cell body 1 shown is not described here in order to save space.
[0057] Wherein, as a preferred embodiment, the method for preparing the metal unit cell is a st...
Embodiment 1
[0065] A regular porous metal material containing cube metal unit cells and a preparation method thereof. The method comprises the steps of:
[0066] S11. Prepare cubic metal unit cells 11, the preparation method of which is as follows Figure 10 Shown:
[0067] S111. Select the sheet material coated with brazing material on the surface, and cut the sheet material into such figure 1 the shape shown;
[0068] S112. The metal sheet is folded into a cube using a progressive die to obtain the following figure 2 The volume shown is 5mm×5mm×5mm, and the metal unit cell body 11 with a thickness of 0.2mm;
[0069] S12. Arraying and stacking the cube metal unit cells 11 prepared in step S11 along the three-dimensional space direction to form a regular porous metal material precursor;
[0070] S13. Put the regular porous metal material precursor prepared in step S12 in a brazing furnace for welding to form a regular porous metal material with a structure as shown in FIG. 3 .
Embodiment 2
[0072] A regular porous metal material containing cube metal unit cells and a preparation method thereof. The method comprises the steps of:
[0073] S21. Prepared as figure 2 The cubic metal unit cell body 11 shown, its preparation method is the same as the cubic metal unit cell body 11 preparation method in embodiment 1; Ordinary sheet metal for welding materials;
[0074] S22. Coating the surface of the cubic metal unit cells 11 prepared in step S21 with an adhesive, stacking them in an array along the three-dimensional space direction, and making two adjacent cubic metal unit cells 11 bond to each other, thereby forming a regular porous metal material.
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