Because of the iron, aluminum, stainless steel, enamel, and other utensils placed in the furnace, the microwave oven will generate electric sparks and reflect microwaves when it is heated, which will damage the furnace body and cannot heat the food.
When heating liquids, a wide-mouth container should be used, because the heat generated by the heating of food in a closed container is not easy to dissipate, which makes the pressure in the container too high, which is easy to cause explosion accidents.
The microwave will be reflected back when it hits the metal, so the inner wall is made of a specially treated steel plate. According to the reflection caused by the inner wall of the microwave oven, the microwave can penetrate the food back and forth to enhance thermal efficiency. However, metal containers should not be used in the furnace, otherwise, it will affect the heating time and even cause discharge and ignition in the furnace.
Extended information
Precautions for the use of microwave ovens:
1. Eggs, whether they are shelled or not, will accumulate a lot of moisture in microwave-poached eggs. Causes the microwave to act like a pressure cooker and the eggs will explode. It should be noted that even peeled eggs cannot be placed in the microwave because there is still a layer of yolk film.
2. Some ingredients such as ham sausage and cod roe are packaged in shell or film, and it is best not to heat them directly in the microwave oven. Because steam is generated during the heating process of the food, and the steam of the packaged food has nowhere to dissipate, it is very easy to cause the film and the food to rupture, and may even cause the container to rupture. In the process of heating this type of food in a microwave oven, care should be taken to remove the shell, or cut a knife or poke a few holes in the film to allow the steam to escape and avoid danger.
3. In order to avoid the release of substances harmful to the human body during the healing process, please try not to put the disposable lunch box into the microwave oven for heating. Only polypropylene (PP) is more heat-resistant and can withstand a high temperature of about 200 °C, so it can be heated by microwave, and repeated heating will not be a big problem. The heat resistance of the rest of the lunch boxes is too poor, and it is best not to heat them directly.
