What is the principle of tongue licking hot iron plate, and what is the principle of being glued to

Tongue licking hot iron plate is the principle of using hot air to rise, and water is heated to absorb heat and convert into steam. It's the same as boiling water in a paper pot.

1.When licking, the tongue should have saliva, and the tongue should lick the underside of the iron plate, so that the saliva will be heated and turn into steam, and the tongue will not be damaged.

2.The licking time should be short, that is, the contact time between the tongue and the iron plate should be shortened as much as possible, and if the contact time is long, the tongue will become mature meat.

Because the heat of iron is transmitted quickly, the tongue is quickly cooled, the saliva on the surface of the tongue freezes, and the tongue is frozen on the iron frame.

Solution: Melt with warm water and slowly squirm your tongue. After being touched, you can use your tongue to push up to speed up the metabolism of saliva, which can help separate the tongue from iron.

Although long-term freezing can be very uncomfortable for the tongue, if you can withstand the pain, you can continue until you separate yourself. You can also dip your hands in some saliva in your mouth, and then gradually soak it at the junction of your tongue and iron to speed up the temperature.

Because the temperature is low in winter, the temperature of iron is also low, and when the temperature of iron is less than zero degrees Celsius, the water on the tongue solidifies.

There is a lot of water in saliva.

Whereas, the specific heat of iron is comparatively smaller.

Saliva reaches freezing point as soon as it comes into contact with iron.

So it will stick.

Simply put, it's frozen.

Frozen on it, of course.

When the tongue licks on the iron at a low temperature, the saliva will quickly freeze, and in this case, you can only wait slowly for the temperature of the tongue to melt slowly, and the saliva will hurt if you pull it directly.

When the first drop of water falls on the surface of the hot metal, it will rise upwards due to the elastic action, and at the same time, at the moment of contact with the hot surface, a thin layer on the surface of the water droplet is rapidly vaporized, forming a vapor layer with a thickness of about 1. This layer of steam supports the small water droplets and acts as an adiabatic effect, so that the heat of the metal cannot be transferred to the water droplets quickly, thus delaying the vaporization process. When the second drop falls, the appeal effect is significantly reduced due to the natural cooling and cooling of the first drop, so the vaporization is faster.

Leiden-Frost's phenomenon.

Iron plates include cold plates and hot plates.

Cold plate is commonly referred to as cold rolled plate.

Cold-rolled plate is made of hot-rolled coil as raw material, rolled at room temperature below the recrystallization temperature, because there is no heating in the production process, so there are no defects such as pitting and iron oxide scale that often occur in hot rolling, and the surface is excellent and smooth.

Gao Qing is bright. Moreover, the dimensional accuracy of cold-rolled products is high, and the performance and structure of the products can meet some special use requirements, such as electromagnetic properties, deep drawing properties, etc.

The hot plate is commonly referred to as the hot-rolled plate, which is made of slab (mainly continuous casting billet) as raw material, and is made of strip steel by roughing rolling mill and finishing mill after heating. The hot steel strip from the last rolling mill is cooled to the set temperature by laminar flow, and then rolled into a steel strip coil by the coiler, and the cooled steel strip coil is processed into steel plate, flat coil and longitudinal cutting steel strip products after different finishing lines (leveling, straightening, cross-cutting or slitting cutting, inspection, weighing, packaging and marking, etc.) according to the different needs of users. Due to the excellent properties of hot continuous rolling steel plate products such as high strength, good toughness, easy processing and good weldability, they are widely used in shipbuilding, automobiles, bridges, construction, machinery, pressure vessels and other manufacturing industries.

Hot plates, cold plates are steel plates, stainless steel plates, the so-called hot and cold refers to the different types of processing. Hot, refers to hot rolling after heating; Cold, is cold rolled after cooling.

Iron plate and stainless steel plate are iron plates that are only for the difference in carbon content in the plate and the difference in heat treatment temperature, with high carbon content and low melting temperature;

Steel plate with low carbon content and high melting temperature.

The hot plate is cut off after being heated. The cold ones are not the ones that are not heated, and the ones that are not heated. Hot and cold are different processes for cutting. Stainless steel is chrome-plated. The iron plate does not need to be explained. You're talking about the bunch of the same material body. Please adopt thank you!

Hot plate: refers to the hot-rolled steel plate, the steel is heated to the rolling temperature to form the steel plate, because there is a heating process, therefore, it is often a steel plate with a relatively large thickness, and the surface quality is not very good due to heating and oxidation.

Cold plate: refers to the steel plate formed by rolling at room temperature, due to rolling at room temperature, the force required is relatively large, therefore, this kind of steel plate is often a steel plate with a relatively thin thickness, belonging to a thin plate or ultra-thin plate, because there is no heating process, the surface of the steel plate is not oxidized, therefore, the surface quality is better.

Stainless iron: refers to industrial pure iron, which contains less impurities and has relatively high corrosion resistance, often due to the iron core of the electrical industry, also known as electrical steel.

Iron plate: It is actually a mild steel plate.

Stainless steel: refers to the steel with good corrosion resistance, the annual corrosion rate is less than that, there are ferritic stainless steel, martensitic stainless steel, austenitic stainless steel and duplex steel, in addition, according to different uses, there are stainless spring steel and stainless bearing steel.

The hot plate and the cold plate are classified according to the shape and do not involve the chemical composition of the steel, so there are carbon steel and alloy steel, and there are different grades, and stainless steel is alloy steel.

The surface of hot-dip galvanized strip products will appear white powdery zinc oxide, commonly known as white rust. There are several reasons why this can occur. If the galvanized steel body itself has been severely corroded, it is easy to rust the galvanized layer because the oxygen content may be retained in the steel body.

According to the process flow of hot-dip galvanized strip, if the coating is too thin, it will not play the role of rust prevention; When the steel body is pickled, the steel body is corroded for too long, or the steel body is not cleaned after pickling, which can lead to the rust of the plating. In addition, there are many reasons such as carelessness of hot-dip galvanized strip staff, incomplete passivation, etc., which will also lead to rust of the galvanized body.