Foam alloy for noise reduction of air conditioner and its preparation method and application
A foam alloy and air conditioner technology, applied in the field of air conditioning, can solve problems such as damage to the inner wall of the pipeline, affecting user experience, and health hazards
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[0053] The method for preparing foam alloys in the above-mentioned embodiments of the present invention is simple in process and low in cost, and compared with foamed copper using pure copper as a raw material, in the present invention, copper is used as a base material and a certain component of nickel is used to replace a part of pure copper. Not only can the cost of raw materials be significantly reduced, but also nickel and copper can be formed into compounds, and the microstructure of copper can be improved, so that the foam alloy has better noise reduction effect and mechanical properties. In addition, nickel can form a passivation film on the surface of copper, which can significantly improve the corrosion resistance of the foam alloy. Specifically, the corrosion weight loss rate can reach no higher than 0.045 mg / year.
[0054] According to a third aspect of the invention, the invention proposes a muffler for an air conditioner. According to an embodiment of the present...
Embodiment 1
[0067] (1) Put 3kg of sodium chloride salt particles into a crucible, heat up to 700°C in an electric furnace at a heating rate of 10°C / min, keep warm for 2 hours, and then cool with the furnace. The cooled salt was roasted, crushed in a crucible, and then treated with a 10-mesh sieve to obtain salt particles with a particle size of 10 mesh. The 10 mesh particle size salt is then put into the mold and then compacted using a wire mesh press on the salt particles. Then put the mold into a high temperature furnace and heat it to 900°C for 1 hour.
[0068] (2) Put 5kg of pure copper block into the crucible, use electric resistance furnace to melt the pure copper, heat it for 30 minutes after melting, then add 40g of pure nickel block into the crucible, after the nickel block is melted, fully stir to make the alloy Evenly, keep warm for 30 minutes, thereby making copper-nickel alloy melt, set aside.
[0069] (3) After the heat preservation of the salt particles in step (1) and th...
Embodiment 2
[0074] (1) Put 3kg of sodium chloride salt particles into a crucible, heat up to 700°C in an electric furnace at a heating rate of 10°C / min, keep warm for 2 hours, and then cool with the furnace. Roast the cooled salt, crush it in a crucible, and then use a 10-mesh sieve to obtain salt particles with a particle size of 10 mesh. The 10 mesh particle size salt is then put into the mold and then compacted using a wire mesh press on the salt particles. Then put the mold into a high temperature furnace and heat it to 900°C for 1 hour.
[0075] (2) Put 5kg pure copper block into the crucible, use resistance furnace to melt the pure copper, keep it warm for 30 minutes after melting, then add 80g pure nickel block into the crucible, after the nickel block is melted, fully stir to make the alloy uniform , heat preservation for 30 minutes, thereby making copper-nickel alloy melt, standby.
[0076] (3) After the heat preservation of the salt particles in step (1) and the alloy melt in ...
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