Brazing is a metal-joining process that uses a filler metal to bond two or more pieces of metal together. Unlike welding, which melts the base metals, brazing occurs at a lower temperature, allowing the base metals to remain solid. The filler metal is heated until it melts and flows into the joint, creating a strong connection once it cools and solidifies. This technique is commonly used in various industries, including automotive, aerospace, and plumbing. It is particularly useful for joining dissimilar metals and can produce durable joints that resist corrosion and high temperatures. Overall, brazing is an effective method for creating reliable metal assemblies.