What is the refractory degree of refractory material? How is the refractory determined?

Refractory refers to the property of refractory materials to resist high temperature action without melting and softening under unloaded conditions. The chemical composition, mineral composition and phase distribution and bonding of refractory materials have a decisive impact on its refractoriness, and the most basic factor determining the refractory of the material is the chemical and mineral composition of the material and its distribution, and various impurities, especially those with strong flux effects, will seriously reduce the refractory of the material.

The refractory determination of refractory materials is carried out in accordance with the Chinese National Standard GB T7322-2007 "Refractory Refractory Test Method". The main point of GB T7322-2007 is that the test material is made into a truncated triangular pyramid, with a length of 2mm on each side of the upper bottom, 8mm on each side of the lower bottom, and a height of 30mm The cross-section is an equilateral triangle;

The test cone of the test material is planted on the cone table together with the standard temperature measuring cone with known refractoriness, and the bending situation of the test cone and the standard temperature measuring cone is heated and compared under the specified conditions until the top of the test cone bends to contact the chassis, and the temperature that can be represented by the standard temperature measuring cone bent at the same time with the test cone is the refractory degree of the test cone.

The property of refractory materials that resist high temperature and do not melt is called refractoriness!

The material to be measured is made into a truncated triangular pyramid, the upper end is 2mm long on each side, the lower end is 8mm long on each side, and the height is 30mm, and the cross-section is equilateral triangle. When heated at a certain heating rate, it is deformed and bent due to the influence of its own weight, and the temperature at which it bends until the apex is in contact with the chassis is the refractory degree of the specimen.

Refractoriness refers to the ability of a refractory material to resist high temperature action without melting and softening when it is not loaded. Refractory is the basis for judging whether a material can be used as a refractory material. The load softening temperature refers to the temperature at which the material is deformed under constant pressure load and heated at a certain heating rate.

It indicates the ability of the refractory material to resist both high temperature and load, and to a certain extent, indicates the structural temperature of the product under similar conditions of its use. Therefore, in practical application, the load softening temperature of refractory material is more practical reference than the refractory.

A class of inorganic non-metallic materials with a refractory degree of not less than 1580.

Refractory resistance refers to the Celsius temperature at which the refractory conical specimen resists high temperature without softening and melting without load. However, the definition of refractory alone is no longer a complete description of refractories, and 1580 is not absolute. It is now defined as a material whose physical and chemical properties allow it to be used in a high-temperature environment, called a refractory material.

Refractories are widely used in metallurgy, chemical industry, petroleum, machinery manufacturing, silicate, power and other industrial fields, and are the largest in the metallurgical industry, accounting for 50% and 60% of the total output.

At present, it is easier to get graphite material! I don't know if the atmosphere of this device you are using will oxidize! If it is not oxidized, it will be easy to do, and if the oxidized atmosphere is not very good!

The refractory temperature of different materials is not the same.

Even if the material is the same, the processing technology, chemical composition, manufacturer and other factors still have a great impact on the refractoriness.

Generally speaking, no matter what refractory material, at least the refractory temperature is above 1000 degrees. Specifically, or higher, it is necessary to say about a certain material.

Answer]: B2021 textbook p162

According to the refractory classification (1) ordinary refractory and fire materials, the refractory degree is 1580-1770. (2) High-grade refractory trapped material, its refractory degree is 1770-2000 reputation. (3) Special grade refractory material, its refractory degree is 2000 above.

b is the refractory range of ordinary refractories.

Answer]: B2020 Textbook P160 2019 Textbook P149

According to the refractory classification (1) the general judgment of the reputation of the pure fire materials, the refractory of the judgment of 1580-1770. (2) Advanced refractory material, its refractory is 1770-2000. (3) Special grade refractory material, its refractory degree is 2000 above.

b is the refractory range of ordinary refractories.

Explain the difference between refractory refractory and melting point, refractory can not be misunderstood as the temperature of refractory materials that can be used under high temperatures. Because it has completely softened to the point where it loses its mechanical strength. For example, the damage of alkaline refractories is based on the softening of the binder due to the softening of the binder, which is much lower than the refractoriness of the material.

Refractory has a different meaning than melting point. The melting point is the equilibrium temperature permeability of a single crystalline substance that melts from a solid state into a liquid state. The refractory is the melting range of a variety of first ridge minerals.

It is true that crystalline minerals have high melting points, and the temperature of the eutectic formed by interaction is correspondingly high.

The word for refractory is explained as: resistant to fire nàihuǒ. (1) Able to withstand high temperature or high temperature resistance. (2) The property that does not burn when in contact with flames.

The word for refractory is explained as: resistant to fire nàihuǒ. (1) Able to withstand high temperature or high temperature resistance.

(2) The property that does not burn when in contact with flames. The part of speech is: adjective.

Pinyin is: nàihuǒ. The structure is:

Resistant to fire (left and right structure) and fire (monomeric structure). The phonetic pronunciation is:

What is the specific explanation of fire resistance, we will introduce it to you through the following aspects:

1. Citations and explanations [click here to view the details of the plan].

Withstand ** burning. Quoting Wang Wenshi's "Big Carpenter" II: "He pulled the bellows hard, and the furnace was red, so he took the pig iron rod from the big carpenter's hand, inserted it flat in the charcoal fire, and covered it with a fire-resistant soil lid.

Refers to the burning of fuel. Quoted from "People's Literature", No. 1, 1981: "It is flammable, fire-resistant, and can maintain the constant temperature of the soil kang."

2. Network Explanation.

Refractory refers to being able to withstand high temperatures or resist high temperatures. For example: refractory soil.

Words about refractory.

refractory

Idioms about refractory.

Vulgar can not tolerate frost, cold, intriguing, intriguing, chewing, impatient, impatient, heat, fire, hardship, hard work, and heat.

Words about fire resistance.

Endure hardship, hard work, frost resistance, cold resistance, hardship, hard work, hard

Sentence formation about refractory.

1. Durable: It has good corrosion resistance, high temperature resistance and fire resistance, and has a longer service life.

2. The vast majority of ancient cultural relics are buildings with wood as the main material, with low fire resistance grades, and most of the ancient buildings are composed of columns, beams, roofs and other components, and there are flammable materials such as silk and weaving stored inside, and the fire load is large.

3. The molding line uses a pouring system of clay green sand and refractory products, and the sand mold is not sprayed with paint, and the steel castings produced meet the product quality requirements.

4. Using industrial alumina, combined clay, kyanite, etc. as raw materials, the refractory heat-insulating brick was successfully developed by using polystyrene spherical firing pre-injection and plastic forming method.

5, the forbearance fire in Qin Chuan's body began to frantically absorb the angry spirit, and his hair grew, a blood-red light flashed in his eyes, and he endured his anger, gritted his teeth and told me, what is your name.

Answer] Grinding: Good lead round b

According to the classification of refractory materials: (1) The refractory of Youluo is 1580 and 1770, which is ordinary refractory materials. (2) The refractory degree of 1770 2000 is a high-grade refractory material. (3) The refractory degree is higher than 2000 for special refractories.

Answer]: C according to the refractory classification of refractory materials (1) The refractory of 1580 1770 is ordinary refractory materials. (2) The refractory with a diameter of 1770 2000 is a high-grade refractory material.

3) The refractory degree is Gaoming sedan car in 2000 for the special defense of high-grade refractories.