The die-cast boiler of a coffee machine is a core heating element formed by die-casting. It is usually made of aluminum alloy or stainless steel and has both high strength and lightweight characteristics. Its closed cavity design is directly related to the water system of the coffee machine. It is responsible for storing cold water and heating it to a suitable extraction temperature (usually 88-96°C). It is the “thermal energy center” for stable water supply of the coffee machine. The die-casting process ensures that the boiler has no welding gaps, high pressure resistance (commonly 1-1.5bar) and corrosion resistance, and is suitable for the high-frequency use needs of home or commercial coffee machines.

​​Performance advantages and applications​​: As the “temperature engine” of the coffee machine, the die-cast boiler conducts heat quickly and evenly through the built-in heating tube (mostly nickel-chromium alloy), shortening the preheating time (more than 30% higher than the traditional welded boiler); at the same time, the one-piece molding structure avoids the risk of water leakage and ensures the long-term stability of the water system. Its surface is specially treated (such as anodizing or coating) to further reduce scale adhesion and extend the cleaning cycle. Whether it is the precise temperature control of a home espresso machine or the high-frequency cup-dispensing requirements of a commercial machine, the die-cast boiler can provide a stable temperature base for coffee extraction with reliable heating performance and durability, which directly affects the aroma and taste of the coffee.