The core structural feature of hard oxide inner pot electric pressure cookers lies in their uncoated design and high-hardness oxide layer process, achieving wear resistance, non-stick properties, and durability through physical means.
Hard Oxide Inner Pot Material and Process: The hard oxide inner pot uses an aluminum alloy base material, treated with an aerospace-grade double hard oxide process to form a high-hardness, dense oxide layer on the surface. This process does not contain harmful chemical coatings such as PFOA, avoiding the health hazards caused by the peeling of traditional non-stick pan coatings. The inner pot thickness typically reaches 1.6mm, enhancing structural strength and heat conduction uniformity.
Uncoated Physical Non-stick Mechanism: Unlike inner pots that rely on chemical coatings, hard oxide inner pots achieve a natural non-stick effect through their surface microporous structure and high-hardness oxide layer. During cleaning, steel wool can be used without damaging the inner pot, truly achieving "the more you use it, the better it becomes."
Dual Inner Pot Design (Some Models) Some high-end models are equipped with a dual inner pot structure. One inner pot is a hard oxygen pressure cooker for daily quick cooking, while the other is a 304 stainless steel composite inner pot suitable for pressure stewing soups or meats, preventing flavor mixing and improving hygiene standards.
Overall Structure and Safety Design Most hard oxygen pressure cookers use a stainless steel outer shell, which is fingerprint-resistant, aesthetically pleasing, and durable.
Operation methods include knob and touch controls, and support for preset cooking and multiple safety protections (such as Joyoung's "Safety Shield" with ten layers of protection) to ensure safe use.