What kind of material is used for glass tempered racks and shelves, high temperature metal wires and

Temperature Resistance : 650°C, Melting Point: 1350°C, Inner Diameter:

10mm 120mm Features Smooth surface, its tensile strength, high melting point can be used in high temperature environment, low resistance, electrical conductivity, good thermal conductivity. The products are mainly used in the hot bending, strengthening and silk screen baking processes of glass, which can effectively improve the yield of glass products and reduce production costs for glass manufacturing enterprises.

It is resistant to high temperatures and is not affected by normal external pressures.

Tempered glass reinforced glass is a type of safety glass. Tempered glass is actually a kind of prestressed glass, in order to improve the strength of the glass, chemical or physical methods are usually used to form compressive stress on the surface of the glass, and the glass first counteracts the surface stress when it bears external force, thereby improving the bearing capacity and enhancing the wind pressure resistance, cold and heat resistance, impact and so on. Note the difference with FRP.

Feature: Security.

When the glass is damaged by external force, the fragments will be broken into small particles at obtuse angles similar to honeycombs, which are not easy to cause serious harm to the human body.

The impact strength of tempered glass with the same thickness of high strength is 3 5 times that of ordinary glass, and the flexural strength is 3 5 times that of ordinary glass.

Thermal stability. Tempered glass has good thermal stability, can withstand 3 times the temperature difference of ordinary glass, can withstand 300 temperature difference changes.

Application of tempered glass.

Architecture, building formwork, decoration industry (e.g. doors and windows, curtain walls, interior decoration, etc.).

Furniture manufacturing industry (glass coffee table, furniture supporting, etc.).

Home appliance manufacturing industry (TVs, ovens, air conditioners, refrigerators, etc.).

Electronics, instrument industry (mobile phones, ***, mp4, clocks and other digital products).

Automobile manufacturing industry (automotive windshields, etc.).

Daily necessities industry (glass cutting boards, etc.).

Special industry (military glass).

The heat resistance temperature of tempered glass is related to the thickness of the glass, the wind power of the blower in the tempering process, and the size of the tempering furnace.

Under normal circumstances, a tempered glass with a thickness of 5 mm has a heat-resistant temperature of 240 degrees, while a piece of tempered glass with a thickness of 10 mm can have a heat-resistant temperature of up to 280 degrees.

At the same time, tempered glass is also divided into architectural tempered glass and industrial tempered glass. What we call high-temperature resistant tempered glass generally refers to industrial tempered glass.

The temperature difference between cold and hot fusion is generally within 200 degrees for tempered glass, which should prevent glass cracking due to quenching and heating.

The test temperature of ordinary physical tempered glass does not exceed 300, after about 500 changes, the tempering performance of the glass disappears, becomes ordinary glass, and the processing performance becomes poor, fragile.

Tempered glass can withstand high temperatures of more than 300 degrees.

The heat-resistant temperature of tempered glass generally does not exceed 300, and the thicker the thickness, the more stable the heat resistance.

Glasses with better heat resistance than tempered glass, mainly: Pyrex glass, heat resistant 500; Crystal-grained glass, heat resistant 1000 ; High purity glass, heat resistant 1500 . Of course, if the above four heat-resistant temperatures are not enough for your requirements, you can also choose alumina glass, heat-resistant 1800, and it can reach 2100 in a short time, however, ** is more expensive.

At present, the number of heat-resistant high-temperature glasses is the most heat-resistant 1000 fine-grained glass, which is cheap and easy to deliver.

The test will not explode if burned with an open flame, and higher temperatures have not been tried.

High-temperature resistant materials include refractory and heat-resistant materials, inorganic compounds, and polymer materials. Refractory materials usually refer to inorganic materials that can withstand temperatures above 1580. They are used to build kilns, combustion chambers, and other building materials that need to withstand high temperatures.

It is generally made of quartz sand, clay, magnesite, dolomite, etc., such as refractory cement, magnesia brick, etc. Broadly speaking, inorganic refractory and heat-resistant materials refer to these compounds with high hardness, good brittleness, good chemical corrosion resistance, and a melting point of more than 1500. It is mainly divided into two categories: metallic and non-metallic compounds and non-metallic compounds.

The former such as tungsten, molybdenum, tantalum, niobium, vanadium, chromium, titanium, zirconium and other refractory metals and rare earth metals boride, carbide, nitride, silicide, phosphide and sulfide; The latter such as boron carbide, silicon carbide, boron nitride, silicon nitride, boron phosphide, silicon phosphide, etc. The latter has extremely important uses, and can be used as high-temperature refractory materials (such as abrasives, casting molds, nozzles, high-temperature thermowells), heat-resistant materials (such as rocket structural elements, nuclear engineering materials, electric heating elements), electrical materials (such as high-temperature thermocouples, ignition electrodes), in addition to being used as chemical-resistant materials and hard materials. Heat-resistant polymers can be used as high-temperature film insulating materials, high-temperature resistant fibers, high-temperature resistant coatings, high-temperature resistant adhesives, etc.

According to the time of high temperature resistance, it is divided into instantaneous high-temperature resistant materials and long-term high-temperature resistant materials. The former can last from a few seconds to a few minutes at 1000 10000. Among them, the ablative material is also a high-temperature resistant material.

For example, at 300 600, it can maintain its mechanical strength, chemical resistance, etc. in the air.

Melting Point: Diamond: 3550 Tungsten:

3410 Pure Iron: 1535 Miscellaneous Steel: 1300 1400 Miscellaneous Cast Iron:

About 1200 Copper: 1083 Gold: 1064 There are some heat-resistant cast steel, boiler steel, gear steel, etc.

There are many CR-MO steel series are commonly used high-temperature resistant materials, the typical representative is 12Cr1MOV and high-speed steel is also a high-temperature resistant material, the typical representative is W18CrMonB

High temperature resistant, generally used in the industry stainless steel. Not as good as the model!

Tempered glass features: tempered glass is to heat the high-quality float glass close to the softening point, and then cool rapidly on the glass surface, so that the compressive stress is distributed on the glass surface, and the tension stress is in the central layer. Because there is a strong equal compressive stress, the tension and inducing stress caused by the external pressure is offset by the strong compressive stress of the glass, thereby increasing the safety of the glass.

1.Strength improvement: The mechanical strength, impact resistance and flexural strength of tempered glass can reach 4-5 times that of ordinary glass.

2.Improved thermal stability: Tempered glass can withstand huge temperature differences without breakage, and its ability to resist variable temperature differences is 3 times that of ordinary float glass of the same thickness.

3.Improved safety: After the tempered glass is strongly damaged, it quickly presents tiny obtuse particles, so as to ensure personal safety to the greatest extent.

Tempered glass reinforced glass is a type of safety glass. Tempered glass is actually a kind of prestressed glass, in order to improve the strength of the glass, chemical or physical methods are usually used to form compressive stress on the surface of the glass, and the glass first counteracts the surface stress when it bears external force, thereby improving the bearing capacity and enhancing the wind pressure resistance, cold and heat resistance, impact and so on.

1) High strength: 3 5 times the standard value of the original glass strength.

2) The high thermal fracture strength is increased by 3 times and the toughening. There is image distortion.

3) Glass shards are safe. The number of fragments must be no more than 50 grams, and the number of fragments in the 50x50 area should be greater than 40.

4) It cannot be cut after tempering. To be processed before tempering, the distance between the reserved holes is not less than 100, and the distance from the edge is not less than 6mm and not less than the plate thickness.

The tempered front glass needs to be chamfered and edging. Nowadays, machine finishing is generally used.

5) Self-detonation. The self-explosion rate is about 3%. The main reason is residual nickel sulfide impurities. Nickel sulfide crystals expand by 4% in volume when converted from phase to phase, and if located in the most tension glass**, the pressure generated by the expansion can cause the entire glass to break.

The difference between tempered glass and ordinary glass.

It is the same material as ordinary glass, but the ordinary glass has been tempered, and the so-called tempering treatment is to heat the ordinary glass to the melting point, and then put it in a constant temperature environment to cool it slowly, and it becomes tempered glass.

1) What is tempered glass?

Through high temperature and quenching, the surface layer of annealed glass forms strong compressive stress, which increases the mechanical strength of the glass several times, that is, tempered glass. The surface stress of tempered glass is: 69 168 MPa.

2) What are the characteristics of tempered glass?

Safety: After rupture, it is broken into small obtuse particles, which will not cause major harm to the human body. High Strength:

Generally, it is 4 times or more of the strength of ordinary glass. Deflection: 3 to 4 times greater than ordinary glass.

Thermal stability: Tempered glass has good thermal stability, and can withstand a temperature difference of about 110°C.

Tempered glass is manufactured by high temperature and cooling, and its function is that when it is collided, it will not hurt people like ordinary glass, it will be broken into a particle, which is a kind of safety glass for life. Anti-riot glass is a special glass made of steel wire or special book film and other materials in the glass.

Tempered glass: the strength is several times higher than that of ordinary glass, the flexural strength is 3 5 times that of ordinary glass, and the impact strength is 5 10 times that of ordinary glass, which improves the strength and safety at the same time.

But there is a possibility of self-explosion (self-breaking) of tempered glass, commonly known as "glass bomb".

Explosion-proof glass: It has high strength and safety performance, which is 20 times that of the same ordinary float glass. When ordinary glass is violently impacted by hard objects, once broken, it will turn into fine broken glass, splashing around, endangering personal safety.

The explosion-proof glass we developed and produced, when it is violently hit by a hard object, only cracks will be seen, but the glass is still intact, and it is smooth and flat to the touch, and will not hurt any personnel.

In addition to high-strength safety performance, explosion-proof glass can also be moisture-proof, cold-proof, fireproof and ultraviolet-proof.

Explosion-proof glass is a glass in which tempered glass is attached to other objects so that the residue will not easily scatter when broken. Generally, there are laminated glass and film glass, all of which belong to explosion-proof glass.

Some of the car windshields are added with explosion-proof film, and some are not, but the essence is tempered glass.

Explosion-proof glass has professional practices such as wire clamping, and tempered glass is ordinary glass that has undergone high temperature and cooling treatment.

The inside of the different explosion-proof ones is laminated.

Explosion-proof glass refers to special glass that prevents violent impact or force impact. The conventional thickness of explosion-proof glass is 8 mm, 10 mm, 12 mm, 16 mm, 20 mm, and 50 mm for special requirements.

The explosion-proof effect of explosion-proof glass has a lot to do with the explosion-proof film used in the processing process, the conventional explosion-proof film is PVB film, and the high-strength explosion-proof glass generally uses SGP film.

Guangzhou Xianglu glass.

Explosion-proof glass generally performs ** sexual environment Part 1: General equipment requirements", mainly to detect the impact resistance, the impact resistance of conventional explosion-proof glass is 4 joules, 7 joules, and 10 joules.

Explosion-proof glass is a special glass product, and it is generally necessary to issue an explosion-proof glass inspection report and product certificate issued by the testing unit, which can be used as the basis for acceptance.

Tempered glass reinforced glass is a type of safety glass. Tempered glass is actually a kind of prestressed glass, in order to improve the strength of the glass, chemical or physical methods are usually used to form compressive stress on the surface of the glass, and the glass first counteracts the surface stress when it bears external force, thereby improving the bearing capacity and enhancing the wind pressure resistance, cold and heat resistance, impact and so on.

Preparation: Tempered glass is obtained by cutting ordinary annealed glass to the required size first, then heating to about 700 degrees close to the softening point, and then carrying out rapid and uniform cooling (usually 5-6mm glass is heated at a high temperature of 700 degrees for about 240 seconds and cooled down for about 150 seconds. 8-10mm glass is heated at a high temperature of 700 degrees for about 500 seconds and cooled down for about 300 seconds.

In short, depending on the thickness of the glass, the time to choose heating and cooling is also different). After tempering, uniform compressive stress is formed on the surface of the glass, and tensile stress is formed inside, so that the bending and impact strength of the glass can be improved, and its strength is about four times more than that of ordinary annealed glass. The tempered glass that has been tempered can no longer be cut, ground or damaged, otherwise it will be "shattered" due to the destruction of the uniform compressive stress balance.

Advantages of tempered glass:

The first is that the strength is several times higher than that of ordinary glass, and it is bending resistant.

The second is the safety of use, its bearing capacity is increased to improve the fragile properties, even if the tempered glass is damaged, it is a small fragment without acute angles, and the damage to the human body is greatly reduced. The quenching and heating resistance of tempered glass is 3 5 times higher than that of ordinary glass, and it can generally withstand temperature changes of more than 250 degrees, which has obvious effects on preventing thermal explosion. It is one of the types of safety glass.

In order to ensure the safety of high-rise buildings, we provide qualified materials to ensure safety.

Disadvantages of tempered glass:

1 .The tempered glass can no longer be cut and processed, and the glass can only be processed to the required shape before tempering, and then tempered.

2 .Although the strength of tempered glass is stronger than that of ordinary glass, tempered glass has the possibility of self-explosion (self-breaking), while ordinary glass does not have the possibility of self-explosion.

3 .The surface of the tempered glass will have unevenness (wind spots) and a slight thinning of thickness. The reason for the thinning is that after the glass is softened by hot melting, it is quickly cooled by strong wind, which makes the crystal gap inside the glass smaller and the pressure increases, so the glass is thinner after tempering than before tempering.

In general, 4 6mm glass is thinned after tempering, and 8 20mm glass is thinned after tempering. The specific degree should be decided according to the equipment, which is also the reason why tempered glass cannot be mirrored.

4.After passing through the tempering furnace (physical tempering), the flat glass used in construction will generally be deformed, and the degree of deformation is determined by the process of equipment and technicians. To a certain extent, the decorative effect is affected (except for special needs).