Cords asbestos. Varieties and scope

Since time immemorial, man has learned amazing fibrous material ignoring the fire. His name is asbestos (Greek asbestos - indestructible, inextinguishable). One of the most popular products from this mineral is the asbestos cord. The certificate of modern products corresponds to the standard ISO 9001: 2008. They are actively used in industry, housing and communal services, while laying heating systems.

Asbestos fibers, similar to silk yarn, are interlaced in bundles, diluted with cotton or viscose. The shape of the product, the size, the ways of weaving and the mineral content vary. The design of the cord also has differences: with the core and without. Such environments as steam, gas or water may become the sphere of exploitation of these products. The most common is the asbestos cord SHAON (GOST 1779-73). Then we will talk about the varieties of products.

Cords asbestos of general purpose

The composition of the products includes fibers of chrysotile asbestos with impurities of cotton and other chemical fibers. Apply it as a sealant and heat insulation of various compounds in thermal units. Asbestos cords of this type have good resistance to vibration, they should not have any breaks or fiber bundles, and also be resistant to bending.

Cords asbestos down

Threads of asbestos, combed and intertwined with synthetic or cotton, represent the core of this cord. Outside, it is braided with asbestos yarn. Ships are used in thermal insulation of multiple thermal aggregates and heat-pipe systems with a maximum temperature of 400 ° C at an operating pressure of 0.1 mPa.

Cords asbestos gas-generator

The core of this cord is composed of asbestos cords of the Shaon type, braided with metal wire. Use it in environments with the presence of gases to seal manholes and gas generators. The maximum operating temperature is within 400 ° C at a maximum pressure of 0.15 mPa.

Asbestos Sealing Cords

As the core of this cord, folded several times asbestos cords of the type SHAP with outer braiding asbestos threads are used. Its operating parameters correspond to the other types. The main difference is the maximum cord size. The main application he found in the sealing of door frames, machine parts, as well as the armor of coke ovens.

Heat-resistant cords, asbestos containing

To produce this cord, an asbestos fiber with a certain admixture of cotton is used. The outer braid is made a glass thread when adding cotton fibers. Widely used in enveloping insulation, as well as in the field of thermal insulation of heated surfaces, pipelines. Admissible hygroscopicity is 4%.

Asbestos is a material that is considered one of the most dangerous carcinogens. The fact is that his microscopic fibers are not excreted from the body. They are easily stratified and create an aerosol suspension in the air. People who are constantly in contact with this material and who do not follow security measures may eventually become ill with asbestosis or pulmonary fibrosis. The most dangerous products are from amphibole asbestos. However, asbestos cords, which are made of chrysolite material, are safe for health.