What material is good for the inner tank of a pressure cooker

The pressure cooker is one of the more commonly used electrical appliances nowadays. It has a similar function to an electric rice cooker, but it takes much less time to cook than an electric rice cooker. Because rice cookers rely on the heat from boiling water to cook food, and the boiling point of water is 100 degrees Celsius, the amount of food they can cook and the time they can last are also limited. However, pressure cookers cook food by increasing the pressure inside the pot, so it is necessary to consider the material of the inner pot.

Stainless steel inner liner is the best, durable and safe, and meets the requirements of health and hygiene. If you stew bones in a stainless steel liner for a long time, the scratches caused by friction will not be very obvious.

1. Aluminum liner: Aluminum has uniform thermal conductivity, is easy to shape, is more beautiful, and can be composited with other metals or alloys. It is the main material for mid-range cookware. However, the aluminum liner cannot come into direct contact with food and must be treated with surface protection.

2. Popular word for liner: “thick liner”: “thick liner” refers to the liner whose bottom and wall are made of thicker metal material. Because the food relies on the inner pot to transfer heat, under certain conditions, the transferred heat is proportional to the heat transfer area, that is, the heat transfer effect of the inner pot is proportional to the thickness of the inner pot.

3. The popular word for the inner liner is "honeycomb": Honeycomb inner liner refers to the inner liner with thermal effect patterns designed in a honeycomb shape. This design allows for more complete heat convection and can improve energy efficiency more than traditional flat inner liner.

4. Stainless steel liner: Good stainless steel liner is made of 304 plate. 304 stainless steel has excellent stainless corrosion resistance and good resistance to intergranular corrosion.

5. Popular word for inner liner: "composite bottom": Since stainless steel has poor thermal conductivity, in order to compensate for this deficiency, a layer of aluminum for heat distribution must be laid on the outside of the bottom, and then covered with a layer of stainless steel as the surface layer. The inner liner using this treatment method is usually called "composite bottom".