Can a clay pot be burned directly on the fire after it is taken out of the refrigerator?

The casserole you bought for the first time has to be processed before you can put it on the fire. Otherwise, it will burn directly. After this time he was dealt with, he was not afraid of the change from boredom to heat. The casserole is afraid that it will be heated and put directly into cold water.

It is easy to crack in that way. In the process of using the casserole, the bottom of the casserole should be burned on low heat. Try not to wear the flame out of the bottom.

The casserole is taken out of the refrigerator and heated, not afraid as long as it is a low heat. Burn the bottom. It won't crack.

But it's hard to say if the fire burned directly.

In addition, how to maintain the casserole that I bought for the first time? Let me tell you how I use it. In this way, to prevent the casserole from exploding, first soak the casserole in cold water and soak it for 24 hours.

Take it out later. I went to the fire on the paper to burn the bottom. Mom used it for a while and then turned up the fire.

The casserole after soaking is less likely to burn. But pay attention to the size of the flame in the future.

In fact, whether the current purple pottery products can be burned directly with an open flame depends on the specific situation. Under some very special conditions, the purple clay pot can be directly exposed to the open flame. However, because of the special conditions, it is difficult to grasp and the risk is greater, so I directly advise Taoyou not to touch the purple clay pot to boil water and make tea.

The reason why it is said that the finished purple pottery cannot be burned directly on an open flame is that it is easy to burn. We know that the sintering temperature of purple pottery is more than 1100. Why can't purple pottery burned in such a high temperature flame be put on an open flame to boil water?

This is determined by the properties of the finished purple pottery. From materials science.

From the point of view, the finished product of purple pottery is a brittle material. It is characterized by high hardness but not impact resistance, and has the universality of brittle materials with compressive and tensile resistance.

For example, a piece of purple pottery is placed on a flat ground and pressed hard, which is difficult to crush or requires a particularly large force to be crushed, which is a manifestation of its high hardness; But if you put it on both sides and apply force from the middle, it will easily break, which is a sign of its poor tension.

What do these two properties have to do with open flame burning? Thermal expansion and cold contraction.

It is common sense, to go deeper, in practice, for a material, when affected by a temperature gradient, each part of it does not undergo thermal expansion and cold contraction at the same time. This is because the conduction of heat in a material is a process that takes time. In the process of heat transfer, if the stress is generated by uneven heating (the technical term is called thermal stress.

If the critical strength is greater than the critical strength required to destroy the material, the material will be destroyed.

It should be placed in a room temperature environment and wait for it to return to normal temperature, and then it can be burned on the fire, otherwise the temperature change of thermal expansion and contraction will cause the clay pot to crack if it changes too much.

No. The clay pot is taken out of the refrigerator and roasted on the fire, which is easy to burst.

Generally, the clay pot will not be directly burned on the fire when taken out of the refrigerator, and it can only be heated and boiled on the fire after the ice in the clay pot is frozen.

Just take it out of the refrigerator and don't cook it directly over an open fire, even after a while, you should cook it on low heat to prevent cracking.

Summary. But be careful not to flash cold and heat, porcelain jars generally cannot be burned with fire, too brittle, easy to burst.

There is no problem that the ceramic jar can be burned directly with fire, because the ceramic jar is particularly resistant to high temperatures, and it is very resistant to high temperatures, so it is possible to use fire to burn, it is possible, and it is not afraid to use fire to say that it is no problem to be able to use torch burning, there is no problem at all, and it can be burned by fire.

But be careful not to flash cold and heat, porcelain jars generally cannot be burned with fire, too brittle, easy to burst.

Ceramic stuff can be burned directly on the stove.

Generally, the ceramics we use are called daily-use ceramics, such as tableware, tea sets, coffee sets, wine sets, tableware, etc.

One of the most important indicators of daily ceramics is thermal shock resistance. Thermal shock resistance is a characteristic index that indicates the ability of ceramic products to resist rapid changes in external temperature without cracking or damage, and is an important performance index. The daily ceramic products are mostly exposed to heated food during the use of daily ceramic products, and the products with poor thermal shock resistance will cause cracking or damage to the product under the action of thermal shock, and the strength of the product is low, and it may be broken when holding food, causing harm to the human body.

Advantages of daily ceramics:

1. Good thermal stability and slow heat transfer. The daily meal has the performance of not being easy to explode when it is subjected to a certain temperature difference in rapid heat and sudden cold. In this respect it is superior to glassware, which is a poor conductor of heat and transfers heat slowly. It is used to hold boiling water or piping hot food, and it is not too hot to hold.

2. Stable chemical properties and durable. This is superior to metal products such as copper, iron, aluminum, etc., daily porcelain has a certain resistance to acid, alkali, salt and atmospheric carbon dioxide erosion, not easy to react with these substances, no rust aging.