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1. Surface Preparation The success of soldering hinges on proper surface preparation. Before soldering, it is essential to remove any oils, dirt, or oxidation from the surface. For galvanized iron, this often means using a wire brush or sandpaper to clean the area. It's also critical to remove the zinc coating at the joints to promote better adhesion.
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After stamping, the raw pieces undergo the painting process. Factory workers apply vibrant colors using techniques such as lithography, which allows for detailed and intricate designs to be printed directly onto the metal. These colorful patterns are important for attracting young consumers, making the tin cars appealing and engaging. Once painted, the cars are assembled, with various parts – like wheels and springs – being attached to give them life. The assembly line, a hallmark of modern manufacturing, allows for efficiency while still maintaining a level of craftsmanship that ensures quality.
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