Preparation technology for mineral insulated fireproof cable

Abstract

The invention discloses a processing technology for a mineral insulated fireproof cable. The processing technology is characterized in that in the copper sheath preparation process of the finished mineral insulated fireproof cable, initial modeling pipe diameter of a copper sheath before rolling is 13.5mm-16.5mm, and pipe diameter of the corresponding finished product capable of being rolled is 11.5mm-13mm. Similarly, initial modeling pipe diameter of the copper sheath before rolling is 15.5mm-18.5mm, 17.5mm-20.5mm, 18.5mm-21.5mm, 20.3mm-23.3mm, 22.5mm-25.5mm, 25.5mm-28.5mm and 28.6mm-31.6mm respectively; and pipe diameter of the corresponding finished product capable of being rolled is 13mm-14.5mm, 14.5mm-16.5mm, 16mm-17.5mm, 17.5mm-19mm, 19.5mm-21.5mm, 22.5mm-24.5mm and 25mm-27mm respectively as for the finished mineral insulated fireproof cable. The fireproof cable is produced by adopting the aforementioned parameters so that yield rate and production efficiency of the fireproof cable can be effectively enhanced, production cost and energy consumption can be reduced, the number of times of rolling can be reduced, processing length of the fireproof cable can be increased, intermediate connectors can be reduced, installation and laying are facilitated, and the fireproof effect and the service life of the cable can be enhanced.

Description

technical field [0001] The invention relates to the technical field of processing mineral insulated fireproof cables, in particular to technical parameters of a copper sheath processing technology of a ribbon-shaped mineral insulated fireproof cable. Background technique [0002] With the continuous development and progress of society, people pay more and more attention to the fire resistance of high-rise buildings (especially for electrical equipment such as elevators) or special-purpose buildings. In order to improve the fire safety level, mineral insulated fireproof cables have emerged; A kind of cable material with excellent fire resistance, the application range of this mineral insulated fireproof cable is gradually expanding. [0003] In the production process of mineral insulated fireproof cables, the processing of copper sheath is a key part. In the traditional processing technology, the process of multiple rolling is generally used. The preparation method of the ...

AI Technical Summary

Problems solved by technology

However, due to the different diameter parameters of the copper sheath for initial blanking, in order to obtain a mineral insulated cable that meets the national standard, the processing of the copper sheath becomes complicated in the subsequent rolling process of the copper sheath, and the forming of the copper sheath The rate is not high, there are different cores, unevenness, high cost, high energy consumption, and the length of the copper sheath produced is relatively short, so that the mineral insulated fireproof cable needs to add an intermediate connector in the actual use process, which directly affects the mineral insulated fireproof cable. Fireproof effect and service life