Process for preparing through-hole foam aluminium plate

Abstract

The invention relates to a method for preparing porous foam aluminum sheet. Wherein, it selects aluminum alloy to be heated via smelting furnace at constant temperature; selects food particle salt as foam porous stuff to be baked at high temperature and constant temperature; adds heated particle salt into mould, to be pressurized by compressor into block; adds melt aluminum to be pressurized by compressor, to make the melt aluminum into the space between particle salts, to form compact foam aluminum skeleton; then solidifies it to be extracted out from the mould to be cooled. The produced porous foam aluminum plate has uniform factor of porosity, with high porous rate, stable structure, adjustable thickness, improved quality, reduced producing cost and the application for batch production.

Description

1. Technical field:

[0001] The production process of the through-hole foamed aluminum sheet of the present invention relates to the technical field of foamed aluminum sheet manufacturing, in particular to a porosity of 80-90%, a through-hole ratio of 85-90%, a main pore diameter of 0.4-2.5mm, and a density of 0.5-1g / cm 3 The through-hole preparation process of the through-hole aluminum foam sheet. 2. Background technology:

[0002] At present, porous through-hole metal foam aluminum has a good prospect in the market application. It is widely used in the field of acoustics (sound absorption and noise reduction), such as: concert halls, theaters, dance halls, gymnasiums, conference centers, road sound barriers, power generation Machine room, air compressor room, ship engine room. Noise reduction for air conditioning and ventilation equipment, etc.

[0003] The research on porous through-hole foamed aluminum materials has been going on for more than 50 years since the 1960s...