A formable fire-resistant cable

Abstract

The invention discloses a flame resistant cable capable of being sized. The special technology of a composite pipe is adopted, the pipe material of the composite pipe is divided into two layers, wherein the outer layer is made of a material which is specifically prepared by aiming at seawater corrosion resistance, and the inner layer is made of a material which is prepared by aiming at the resistance of oil gas corrosion substances, including hydrogen sulfide, hydrogen and the like; the outer layer and the inner layer are extruded into a whole through processing and thermal treatment; and thematerial formula of the cable also takes the structural strength, the machinability and the weldable property of the composite pipe into a special consideration so as to form the composite pipe of which the inner material and the outer material have differences. The toughness of an inner-layer double-phase stainless steel layer is better than the toughness of an outer-layer double-phase stainlesssteel layer, the rigidity of the outer-layer double-phase stainless steel layer is better than the rigidity of the inner-layer double-phase stainless steel layer, the alloy ratio of the inner-layer double-phase stainless steel layer and the outer-layer double-phase stainless steel layer is controlled, so that the inner-layer double-phase stainless steel layer has better hydrogen sulfide corrosionresistance and hydrogen embrittlement resistance, and the outer-layer double-phase stainless steel layer has better seawater corrosion resistance and shock resistance.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to a formable fire-resistant cable. Background technique [0002] With the rapid development of economic construction and the improvement of people's living standards, traditional cables cannot meet the demand. Especially in terms of safety and environmental protection, the requirements for cables are getting higher and higher. In a specific environment, cables are required to have strong fire resistance requirements. At present, traditional cables are poor in fire resistance, and most of them are flammable materials. After burning, small solid particles are produced to form smoke, which reduces the light transmittance and causes a fire. Sometimes it affects people's escape and is not resistant to high temperatures; some materials also contain halogens, and the harmful gases produced after halogen combustion are highly toxic and harm the human respiratory system. In addition, when ...

AI Technical Summary

Problems solved by technology

The common problem of common fire-resistant cables on the market is that the cables are too hard and difficult to bend. Since the cables have reached the fire-resistant level, a lot of fire-resistant and high-temperature resistant materials have been added, which will cause damage to the internal functional layer of the cable during the bending process, and it is easy to cause bending after bending. The cavity in the part greatly increases the internal stress of the cable and affects the service life of the cable

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