Usually, for the refractory bricks used in kilns and furnaces, there are clear regulations and requirements for the maximum limits of dimensional tolerances, distortion, missing edges and corners, and cracks and caves according to the types of products and the conditions of use.
Manufacturing refractory products with the correct shape and accurate size, especially large special-shaped refractory products, is a complex task in production, therefore has extremely high requirements to the production process. The instability of the property of the raw materials and the violation of the established process system, such as the distribution ratio of raw materials, particle composition, billet moisture, shaping pressure, brick mold shape and size, and drying and firing system, may lead to incorrect product shapes and inaccurate size.
The shape correctness and dimension accuracy of refractory products have a very important impact on the performance and service life of high-temperature kilns or furnaces, and it is also an important product quality index. Zibo Yumin Base Pledge continuously upgrades the production process and improves the degree of mechanization and automation of each part of the production process, Yumin is the first refractory manufacturer to achieve automation, intellectualization, and digitization in refractory production processes in China’s refractory industry. We also have clear regulations to the necessary production inspections for key processes, the appearance inspections, and the specifications of the finished products, and arrange pre-assembly in strict accordance with customer drawings before products leave the factory to ensure the shape and size of refractory products fully meet customer requirements.