Aluminum alloy friction welding profile with sound insulation function and preparation method thereof
An aluminum alloy and friction welding technology, which is applied in the direction of sounding equipment, slender components, instruments, etc., can solve the problems that aluminum alloy profiles cannot meet the needs of actual use and the sound insulation performance is insufficient, so as to improve the sound insulation effect, enhance the sound insulation effect, and improve the sound insulation effect. The effect of mass production
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Embodiment 1
[0045] Such as figure 1 As shown, an aluminum alloy friction welding profile with sound insulation function, the aluminum alloy friction welding profile is composed of an aluminum alloy shell 1 and a sound insulation layer 2, and a group of grooves 11 are respectively provided on the inner wall of the aluminum alloy shell 1 , the row groove 11 is composed of a plurality of rectangular sub-grooves 12 arranged at equal intervals on it, and the inner side of the rectangular sub-groove 12 is provided with a card slot 13 for matching the sound insulation layer 2;
[0046] Such as figure 1 As shown, the sound insulation layer 2 includes a sound insulation center layer plate 21 and a sound insulation support plate 22. The sound insulation support plate 22 has the same cross-section as the rectangular sub-slot 12 and is hollow inside. Both sides of the sound insulation support plate 22 are inner arc structures. 22 are arranged at equal intervals on both sides of the sound-insulating ...
Embodiment 2
[0071] This example is basically the same as Example 1, except that the preparation parameters of the sound-insulating microspheres are different. The preparation method of the sound-insulating microspheres in step S2 mainly includes the following steps:
[0072] 1) Preparation of sound-insulating original spheres: Select 40 parts of hollow silica microspheres, 8.5 parts of hollow fibers, 3 parts of diatomaceous earth, and 14 parts of organic binder according to the mass parts to mix to obtain the mixture a, and then according to the mass ratio of 3 : 1 spray mixed water to obtain wet mixture a, extrude and granulate wet mixture a to make a sound-insulating original ball with a particle diameter of 1.2 mm;
[0073] 2) Preparation of coated pellets: select 13 parts by mass of hollow silica microspheres, 10 parts of magnesium hydroxide powder, and 8 parts of organic binder to mix to obtain mixture b, and then spray according to the mass ratio of 5:2 Mix water to obtain wet mixtu...
Embodiment 3
[0079] This example is basically the same as Example 1, except that the preparation parameters of the sound-insulating microspheres are different. The preparation method of the sound-insulating microspheres in step S2 mainly includes the following steps:
[0080] 1) Preparation of sound-insulating original balls: select 45 parts of hollow silica microspheres, 9.0 parts of hollow fibers, 3.5 parts of diatomaceous earth, and 15 parts of organic binder according to the mass parts and mix them to obtain the mixture a, and then mix them according to the mass ratio of 3 : 1 spray mixed water to obtain wet mixture a, and extrude and granulate wet mixture a to make a sound-insulating original ball with a particle diameter of 1.5 mm;
[0081] 2) Preparation of coated pellets: Select 15 parts of hollow silica microspheres, 12 parts of magnesium hydroxide powder, and 10 parts of organic binder according to the mass parts to mix to obtain the mixture b, and then spray according to the mass r...
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