What is the working principle of double-layer terrazzo brick machine?

The working principle of the double-layer terrazzo brick machine involves a series of complex and delicate operating steps that ensure the high quality and consistency of the final product. The whole process starts with raw material preparation. First, select the appropriate surface material and bottom material. Surface materials usually use high-quality cement, pigments and stones to ensure the beautiful appearance and surface wear resistance of the bricks. The underlying materials use relatively ordinary cement and stones, aiming to reduce costs while ensuring foundation strength. The two materials are mixed separately according to the formula requirements to ensure uniform mixing to achieve the best physical and chemical properties.

Next, the machine's automatic feeding system delivers the mixed materials to the forming mold in sequence. The surface material is added to the mold first, followed by the base material. This process requires a high degree of precise control to ensure that the two layers of materials are evenly distributed without uneven layering or mixing of materials. Some advanced double-layer terrazzo brick machines are also equipped with special layered feeding devices, which further ensure the uniformity of material distribution through precise control systems.

After the feeding is completed, the pressing and molding stage is entered. Double-layer terrazzo brick machines usually use hydraulic or mechanical presses to apply high pressure to the material inside the mold. This stage is usually divided into two steps: pre-pressure and main pressure. The purpose of the pre-pressing stage is to initially compact the material so that it has a certain shape and density; in the main pressing stage, higher pressure is applied to ensure that the material is further compacted to achieve the required density and strength. Some machines are also equipped with vibration devices, which further compact the material through vibration, eliminate internal air bubbles, and improve the density and flatness of the bricks. This process not only ensures the structural strength of the bricks, but also makes the surface smoother and more beautiful.

After the molding is completed, the bricks are removed from the mold through an automatic demoulding system. The demoulding process requires careful handling to prevent damage to the bricks at this stage. Subsequently, the newly formed bricks enter the preliminary curing stage. Preliminary curing is usually carried out in a curing room to maintain appropriate temperature and humidity so that the bricks reach a certain initial strength. The initial curing time is usually short, but this process is critical to ensuring the early strength and stability of the bricks.

After the initial curing, the bricks enter the final curing stage. The maintenance cycle at this stage is longer, usually taking several days to several weeks. In a controlled environment, the bricks continue to harden, eventually achieving the strength and durability required by the design. Control of temperature and humidity is crucial during curing, as unstable environmental conditions can cause cracks or lack of strength in the bricks.