A process for improving the uniformity of aluminum foam by using sheet-like foam ceramics
A technology of foam ceramics and process method, which is applied in the field of metal material processing technology to achieve the effect of improving mechanical properties, solving uneven porosity, and good mechanical properties
Active Publication Date: 2017-01-04
山东高速高新材料科技有限公司
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, most foamed ceramics have both open pores and a small amount of closed pores.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0020] In order to better illustrate the present invention and facilitate understanding of the technical solutions of the present invention, typical but non-limiting examples of the present invention are as follows.
[0021] The foam ceramics used are alumina ceramics, and the production method of the ceramics is a foaming method.
[0022] The ceramic foam used has a porosity of 90% 0, a heat-resistant temperature of 1400°C or more, and a pore size of 0.2mm. The ceramic particle size is between 4~6mm.
[0023] The shape design of the foamed ceramic sheet keeps it in a lateral posture in the aluminum solution with air bubbles, as shown in Figure 1.
[0024] The aluminum foam products produced have a porosity of 90%, an average bubble diameter of 2mm, and an error range of porosity and density within ±3%.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| thermal resistance | aaaaa | aaaaa |
| pore size | aaaaa | aaaaa |
| size | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a process method for improving uniformity of foamed aluminum by adopting flaky foamed ceramics. The technical scheme is as follows: the flaky foamed ceramics with a certain size, density and porosity are prepared, and can be kept in a transverse position in an aluminum solution full of bubbles by using shape characteristics or density characteristics of the ceramics. In the process of producing the foamed aluminum, the flaky foamed ceramics and foaming agent powder are simultaneously added into the aluminum solution, and the flaky foamed ceramics keep in a transverse position in the aluminum solution and can prevent the bubbles in the foamed aluminum from floating upwards, thereby improving the uniformity of the porosity of the foamed aluminum. According to the method disclosed by the invention, the foamed ceramics which have the characteristics of high strength and high melting point are used as additives, so that the mechanical properties of the foamed aluminum material are improved. Meanwhile, the flaky foamed ceramics have certain gravity, and the shapes and positions of the flaky foamed ceramics increase the floating resistance, so that the flaky foamed ceramics cannot flow upwards easily, and ensure that surrounding tiny bubbles cannot flow upwards easily, thereby solving the problem of the uniformity of the porosity due to upward floating of the bubbles in the conventional process of producing the foamed aluminum by using a melt foaming method. By adopting the method disclosed by the invention, a foamed aluminum material with better mechanical properties and more uniform density can be obtained, and the method is effective improvement of the current process of producing the foamed aluminum by virtue of melt foaming.
Description
[0001] Technical field: [0002] The invention belongs to the field of metal material processing technology, and in particular relates to a process method for improving the uniformity of foamed aluminum by using sheet-shaped foamed ceramics. [0003] Background technique: [0004] Aluminum foam is made by adding additives to pure aluminum or aluminum alloy and undergoing a foaming process, which has both metal and bubble characteristics. It has the characteristics of small density, high impact absorption ability, high temperature resistance, strong fire resistance, corrosion resistance, sound insulation and noise reduction, low thermal conductivity, high electromagnetic shielding, and strong weather resistance. Sound insulation, building fire protection and other fields have been applied. [0005] The energy absorption of aluminum foam has good rate-strain characteristics, that is, the greater the strain rate, the greater the energy absorbed per unit volume of aluminum foam, u...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/08C22C21/00
Inventor 聂刚谢峰龙海敏
Owner 山东高速高新材料科技有限公司