Uncoated physical non-stick pan

摘要

Uncoated physical non-stick pan, comprising a pan body (1) made of austenitic stainless steel with zero coating, characterized in that an “S-phase” infiltration layer structure of a supersaturated mixed crystal is formed on the inner surface of the coating-free pan body (1) made of austenitic stainless steel; wherein a concave-convex structure (11) is uniformly distributed on the surface of the infiltration layer structure, comprising convex ribs (111) and a recessed area (112) enclosed by the convex ribs (111); and wherein at least on the underside of the recessed area (112) a physical anti-stick layer is formed, and wherein the physical anti-stick layer has a rough surface (2) which is at least in the micrometer range, and an oxide film a formed over the rough surface (2) with a includes rough porous structure in the nanometer range; and wherein the holes in the physical anti-stick layer have the function of storing and locking oil.