Asbestos sheet

Asbestos sheet

Asbestos is one of the first refractory materials used in the field of industrial insulation, and similarly, the birth of asbestos refractory sheets goes back many years. As the name implies, the main material in its production is asbestos fibers.

Sanat Pars Refractory Store is ready to provide consulting, sales and delivery of asbestos refractory sheets in various dimensions and thicknesses throughout the country.

In general, refractory sheets can be considered as one of the most economical and popular refractory materials on the market, which are used for industrial insulation and often in the form of washers, in various fields of industry. Refractory sheets, in addition to withstanding high temperatures and neutralizing the pressure applied to the junction of two parts, by filling the gap between the parts, prevent the material from leaking out and have a wide application in the field of equipment sealing.

Although all refractory sheets have a good performance in insulating industrial parts, but one of the important points that must be considered in the use of refractory sheets, is the relationship between flexibility, strength, pressure resistance and temperature of refractory sheets, with Buyer needs and environmental conditions available. If this is not taken seriously, we may incur significant damage to the equipment despite high costs. In this article, we intend to examine asbestos refractory sheet and its application areas, but it is better to first have a brief look at the properties of asbestos as the main material in the preparation of this refractory sheet.

Asbestos has a high density and cohesion, and the sword-shaped and intertwined fibers are well visible under a microscope. This has made asbestos impermeable and minimizes energy loss.

Washers made from asbestos fiber compression were introduced to the world in the late 19th century by an Austrian scientist. The unique properties of asbestos, including high heat tolerance, and resistance to pressure and most chemicals, quickly made the refractory popular among various industries. But this fame lasted only about a hundred years. Over time, the number of patients with severe lung disease increased among those who came in direct contact with asbestos. This prompted experts and scientists to study the situation closely, and research has shown that toxic asbestos dust can cause irreparable damage to human nature and health. Following this incident, the use of this refractory material was severely and completely banned in many areas. However, the unique properties and characteristics of asbestos fibers, including high heat tolerance, impermeability and reduced energy loss in parts, prevented its complete elimination from the industrial world, and today, the use of asbestos-based insulation only in Places that are not in direct contact with humans and nature are allowed; For example, motorhomes.

For more information in this regard, you can read articles related to asbestos on the refractory website of Pars Industry.

Asbestos refractory sheet, called refractory cardboard, is made from the same asbestos fibers, and by combining it with a special glue and paper or cement. The reason for naming these sheets as refractory cardboard is the flexibility and softness of this product, which is prepared in white or gray. The combination of pure asbestos, flame retardant materials and vegetable adhesives results in a refractory sheet with unique physical and chemical properties that is resistant to oil, steam, hot gases and most acidic materials. Asbestos refractory sheet is usually made in various thicknesses up to 5 mm.

The strength of asbestos refractory sheet is inversely related to the amount of heat tolerance in it and the pressure tolerance of these sheets is severely reduced if the temperature is increased too much. To solve this problem, asbestos sheets are sometimes reinforced with wire to achieve a balance between pressure resistance and heat tolerance.

As mentioned earlier, asbestos fibers have a unique resistance to high temperatures and fire. Sheets made of these fibers can withstand up to 700 degrees Celsius without losing structure and dimensional stability. However, experts have estimated the safe temperature tolerance of asbestos refractory sheets for long-term use at 450 ° C, which is still a significant amount.

It is suggested to read the article on asbestos refractory sheet on Pars Refractory website for more familiarity with asbestos sheet.

Asbestos refractory sheet is used in various fields of industry due to its various physical and chemical properties. Some of the most prominent of these features are:

Impressive heat tolerance
High fire resistance
Remarkable mechanical properties and resistance to tension and abrasion
Possibility of combining with cement and making asbestos cement with high strength
Resistance to high pressure and its neutralization, which leads to increased service life of parts.
Resistance to oil and most chemicals
Affordable price
Possibility of easy cutting
Resistance to insect attack
Convenient maintenance; Of course, we must keep in mind that despite the simplicity of maintenance of this refractory sheet, repairing this product is difficult and dangerous due to the toxicity of asbestos dust.

According to the discussions, since despite the unique properties of asbestos, the dust of these fibers is dangerous to nature and human health, the use of asbestos refractory sheets in public areas such as food and health industries is not possible at all and the applications of this product , Is allowed in places far from human reach; Including:

Insulation of induction melting furnaces
Insulation of parts of the glass industry, and aluminum and steel in contact with m

They are straight with fire
Production of gaskets for industrial parts
Electrical insulation above 1000 watts

For more information and advice on buying asbestos refractory sheets, in various dimensions and thicknesses, you can refer to the website www.nasoozsp.com or contact the experts of Sanat Pars refractory store.