Cast iron process

As a professional trading company specializing in enamel cast iron pans and vegetable oil pans, Jinhu Import and Export Trading Co., Ltd. adheres to strict quality control throughout the entire manufacturing process of enamel cast iron pans. This intricate process combines traditional craftsmanship with modern technology, ensuring each product boasts excellent durability, heat retention and safety.

The process starts with raw material selection. High-purity pig iron and scrap iron are carefully chosen for their superior casting performance. These raw materials are melted in a high-temperature furnace at around 1500°C until they become molten iron, which is then purified to remove impurities such as sulfur and phosphorus, laying a solid foundation for the pan's quality.

Next comes the casting stage. The molten iron is poured into precision-designed molds, which are tailored to different pan sizes and shapes. After natural cooling and solidification, the castings are demolded. Skilled workers then conduct preliminary processing, including removing burrs and polishing the surface to ensure a smooth base for enamel coating.

The enamel coating is a critical step. The polished cast iron blanks are first cleaned thoroughly to eliminate oil and dust. Then, they are sprayed with high-quality enamel glaze, which is composed of silica, borax and other natural minerals. The glazed blanks are fired in a kiln at 850-900°C. This high-temperature firing fuses the enamel tightly with the cast iron, forming a non-toxic, corrosion-resistant surface. For products requiring a decorative finish, a second coating and firing may be applied.

Finally, strict quality inspection is carried out. Each pan is checked for enamel uniformity, surface defects, heat resistance and leakage. Qualified products are then packaged and prepared for export. Jinhu's commitment to rigorous process control ensures that every enamel cast iron pan meets international quality standards, bringing reliable and premium cookware to global customers.