Production method of hollow ball metal composite foamed material

A metal composite and foam material technology, applied in the field of foam metal materials, can solve the problems of low production efficiency of preparation technology, high equipment requirements, inability to meet the production requirements of light weight, high strength and large-sized special-shaped structural parts, etc. The effect is remarkable, the overall density is low, and the light weight is high.

Pending Publication Date: 2019-03-26
SAFENET NINGBO NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] In summary, the existing hollow sphere metal matrix composites preparation technology has low production efficiency and high equipment requirements, and cannot meet the production needs of light weight, high strength a...

Method used

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  • Production method of hollow ball metal composite foamed material
  • Production method of hollow ball metal composite foamed material
  • Production method of hollow ball metal composite foamed material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This embodiment provides a method for producing a hollow spherical metal composite foam material. Through the casting process, the special-shaped structure of the porous structure composite material is integrally formed at one time, such as figure 1 As shown, the method includes the following steps:

[0039] S100: Prepare a mold, the mold is provided with a cavity for material molding, and the shape and size of the cavity can be adjusted according to the needs of the finished structure.

[0040] S200: Select hollow ceramic balls. Ceramic hollow balls can choose alumina, boron carbide, boron nitride, silicon nitride, aluminum nitride, and zirconia ceramics. The particle size of ceramic hollow balls is 2mm to 8mm. Preheat the hollow ceramic balls. After filling into the cavity, you can use hollow ceramic balls of the same particle size, or you can choose hollow ceramic balls with different particle sizes. The hollow ceramic balls with small particle sizes will fill the ga...

Embodiment 2

[0046] Such as figure 1 and figure 2 Shown, a kind of sand casting molding preparation method of hollow spherical metal composite foam material, comprises the following steps:

[0047] S100: Prepare a mold. The mold in this implementation is a sand mold, including an upper sand mold 21 and a lower sand mold 22. The upper sand mold 21 can be opened and removed. The lower sand mold 22 is provided with a cavity for forming structural parts, and the shape and size of the cavity can be adjusted according to the needs of the finished structural parts. The sand mold is provided with a sand runner 23, which communicates with the bottom of the mold cavity, and a sand filter 25 is set at the connecting part of the sand runner 23 and the mold cavity to prevent impurities in the prepared material. The upper sand mold 21 is provided with ventilation holes 24 communicating with the mold cavity. The diameter of the ventilation holes 24 is 1 mm to 3 mm. The distribution and quantity of the...

Embodiment 3

[0054] Such as figure 1 and image 3 Shown, a kind of metal type gravity casting molding preparation method of hollow spherical metal composite foam material, comprises the following steps:

[0055] S100: Prepare the mold. The mold in this implementation is a split-type first metal mold 3, including a left metal mold and a right metal mold. The first metal mold 3 can be opened left and right. The shape and size of the cavity can be adjusted according to the needs of the finished structural parts. The first metal mold 3 is provided with a metal mold runner 31, and the metal mold runner 31 communicates with the bottom of the mold cavity, and a metal mold filter screen 32 is set at the communication part between the metal mold runner 31 and the mold cavity, so as to prevent the prepared material from hollow ceramics. The ball overflows into the sprue. The parting surface between the left metal type and the right metal type has an exhaust gap, which is used to discharge the gas...

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Abstract

The invention discloses a production method of a hollow ball metal composite foamed material. The production method comprises the following steps: S100, preparing a mould, wherein the mould is provided with a cavity, and the shape of the cavity is set according to the shape of a to-be-prepared structural component; S200, preheating hollow ceramic balls, filling the cavity with the hollow ceramic balls, and closely arranging the hollow ceramic balls; S300, heating a metal raw material into a metal melt, and raising the temperature of the metal melt to casting temperature; S400, pouring the metal melt into the cavity, pumping the pressure of the cavity to negative pressure, and filling the clearances of the hollow ceramic balls with the metal melt in a negative pressure environment through infiltration; and S500, naturally cooling the metal melt, and carrying out demoulding to obtain the hollow ball metal composite foamed material. The one-step integral casting molding of different shapes of specially shaped structural components can be realized through the porous structure composite material, the production cost is reduced, the practicability is high, and technical support is provided for the engineering popularization and application of the hollow ball composite metal foamed material.

Description

technical field [0001] The invention relates to the technical field of foamed metal materials, in particular to a method for producing hollow spherical metal composite foam materials. Background technique [0002] Metal foam materials have excellent properties such as light weight, damping and vibration reduction, sound insulation and noise reduction, impact resistance and energy absorption, and have always been a hot spot in the development and application of new materials at home and abroad. Utilizing these properties of foam metal materials, it has broad application prospects in the fields of aerospace, rail transit, automobile manufacturing, interior decoration and military equipment. The metal foam material made by implanting ceramic hollow spheres into the metal matrix has a higher relative density, and its mechanical properties are greatly improved compared with traditional aluminum foam. It can be applied to the manufacture of aircraft carrier flight decks, lightweig...

Claims

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Application Information

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IPC IPC(8): B22D23/04C22C1/10
CPCC22C1/1036B22D23/04C22C1/1047
Inventor 崔东波陈祥王进华吴冬宁
Owner SAFENET NINGBO NEW MATERIAL TECH CO LTD
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