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It is important to know that the shape of the sand has an important impact on the surface finish of the casting. Circular sand is better than triangular sand because the triangular sand has a large gap, which is easy to lead to defects such as porosity; According to the nature of the casting, the sodium silicate quartz sand is selected to form a spalling layer, and combined with the characteristics of cooling and shrinkage of the casting, the surface defects are reduced. Coating a protective layer on the surface of large castings, such as the film on a coated sand mold, can improve the surface finish of the sand mold and reduce the surface defects of the casting.  

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  • As the world shifts towards renewable energy solutions, solar power stands out as a highly effective way to harness energy from the sun. Many homeowners and businesses are considering solar installations to reduce their carbon footprint and electricity bills. A critical factor in choosing a solar system is understanding the specifications, particularly concerning the size of the solar panels. In this essay, we will explore the concept of a 20 kW solar panel system and the implications of a 1.5% variance in panel size, as well as its significance in the overall efficiency and installation process.


  • 3. Grid Connectivity A hybrid inverter can also work in tandem with the grid, allowing homeowners to sell back excess electricity generated by their solar panels. This grid-tie functionality not only boosts energy savings but can also provide additional income through net metering schemes.


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