Lost Foam Casting is an advanced casting process that uses expandable polystyrene foam models combined with organic self-hardening molding sand for pouring. With advantages such as high casting precision, good surface quality, green and clean production, and simple process, it has become a core production process for heavy and complex castings such as automotive body panel stamping dies and large machine tool castings. Pouring these large castings requires the introduction of molten iron at a high temperature of 1400℃~1600℃. As a core component of the gating system, the paper sprue directly determines the casting quality and production efficiency. Selecting high-quality paper sprues is key to improving the quality and efficiency of lost foam casting.

Currently, most foundries still use foam gating systems or ceramic refractory gating pipes, which not only easily lead to casting defects such as sand erosion and sand holes, but can also directly cause casting scrap in severe cases. After pouring, the molten iron inside ceramic gating pipes solidifies into iron bars, requiring crushing and recycling, which is time-consuming, labor-intensive, generates a large amount of solid waste, pollutes the production environment, damages the sand treatment system, and reduces the quality of recycled sand, severely restricting the production efficiency of lost-casting. To solve this industry pain point, XINDA paper gating pipes are the ideal choice for lost foam casting. XINDA paper gating pipes are specifically developed for high-temperature pouring scenarios in lost foam casting,  fundamentally solving the various drawbacks of traditional gating pipes, and are a dedicated paper gating pipe for upgrading lost foam casting.

XINDA paper gating pipes are made from recycled paper pulp as the main raw material, compounded with high-temperature resistant silicate fibers, high-temperature binders, and special reinforcing agents, making them high-performance paper gating pipes suitable for lost foam casting. XINDA paper-casting pipes possess excellent high-temperature resistance, ensuring the smooth passage of 1600℃ molten iron without breaking even in oxygen-deficient environments. After pouring, the paper-casting pipe itself undergoes complete carbonization and decomposition, leaving no hard residue. This completely eliminates the problem of ceramic-casting pipe fragments damaging the sand treatment system, significantly reducing enterprise production costs and laying a solid foundation for the widespread adoption of paper-casting pipes in the field of lost foam casting.

XINDA Paper-Casting Pipe Core Unique Advantages:

(1) XINDA paper-casting pipes weigh only 1/10 of ceramic-casting pipes of the same specifications, making them easy to cut. The paper-casting pipes utilize a tenon-and-mortise joint design for quick and secure installation. Using paper-casting pipes can improve lost foam casting production efficiency by more than 50%.

(2) The pouring system has a constant cross-sectional ratio, stable pressure head, and smooth filling. Heat loss from the molten metal is minimal, and the foam model is thoroughly vaporized. Using this paper-casting pipe effectively avoids casting defects such as wrinkles and carbon slag.

(3) It does not interact with the molten metal and has no carburizing effect on the casting, avoiding defects such as wrinkles and carbon slag. 

(4) After casting, XINDA paper gating pipes are completely carbonized, generating no solid waste. This reduces the labor intensity of casting cleaning, avoids damage to sand processing equipment from ceramic fragments, significantly improves the quality of recycled sand, and makes lost casting greener and more efficient.

(5) XINDA paper gating pipes can significantly reduce the amount of residual metal in the gating system, achieving a process yield of 80%~90%. The larger the casting weight, the more obvious the advantages of paper gating pipes. Practical verification by XINDA customers shows that using a paper-plastic gating pipe system can reduce the gating system by 1/3.

Large-scale production practice has fully demonstrated that XINDA paper gating pipes are convenient to install, have stable processes, are resistant to high temperatures, and are resistant to molten iron erosion, making them a high-quality dedicated paper gating pipe for lost casting production. With continuous optimization of the paper gating pipe production process, XINDA paper gating pipes offer lower overall costs and superior performance. In the production of large, complex, and thin-walled lost castings, the advantages of paper gating pipes are irreplaceable. Choosing XINDA paper gating pipes means choosing high quality, high efficiency, and high returns in the lost foam casting industry. XINDA paper gating pipes – the preferred paper gating pipe brand in the lost foam casting industry!