Process for manufacturing special data cables for seismic detectors

Abstract

The invention discloses a process for manufacturing special data cables for seismic detectors. The process includes steps of (1), stranding seven copper wires with the diameters of 0.28mm by the aid of tubular stranding machines; (2), performing insulation on core wires. The copper wires conform to BG / T3953 electrician round copper wire standards, the copper wires are stranded in the left-hand rotation directions, the stranding pitch is 12.5+ / -0.2mm, and intermediate broken ends of each integral copper wire are not allowed to be welded with each other. The outer insulating diameters of the core wires are 1.55+ / -0.05mm, and the thicknesses of the thinnest portions of the core wires are larger than 0.32mm. The process has the advantages that the core wires can be blue, yellow, brown and gray and are uniform in chromaticity, have smooth appearance and are free of bubbles and impurities, insulating materials are made of modified communication-level polypropylene, shortcomings of poor low-temperature impact resistance, easiness in ageing and burning, high molding shrinkage and the like of common polypropylene can be overcome by the modified polypropylene, and the special data cables are excellent in electric performance, heat resistance and fatigue bending resistance.

Description

technical field [0001] The invention belongs to the field of cable processing, and more specifically, the invention relates to a production process of special data cables for seismographs. Background technique [0002] With the widespread use of 408UL seismic exploration instruments, its special data transmission cables are the main consumable materials in use. At present, they mainly rely on imported supporting equipment, which is not only expensive, but also has a long delivery cycle, which has brought a certain impact on exploration construction. . For this reason, some domestic oil exploration cable manufacturers have carried out trial production of this type of cable according to the requirements of the instrument user unit. The localization of special cables plays a positive role in reducing the cost of seismic exploration and ensuring the smooth progress of construction. Here, the production process of the data transmission cable dedicated to the 408UL seismic pros...

AI Technical Summary

Problems solved by technology

[0002] With the widespread use of 408UL seismic exploration instruments, its special data transmission cables are the main consumable materials in use. At present, they mainly rely on imported supporting equipment, which is not only expensive, but also has a long delivery cycle, which has brought a certain impact on exploration construction.