Production process of aluminum sheath cable

Abstract

The invention discloses a production process of an aluminum sheath cable, relating to the field of communication and signal cable production. The traditional high-frequency welding process is difficult to avoid the problems of pin holes and tack weld, and the standard length of each weldment is only 6 m; in order to weld an aluminum sheath cable, the length of which can reach thousand meters, the invention provides the production process for welding the aluminum sheath cable by the following steps: firstly shaping by a sheath and then welding at high frequency, wherein the thickness of an aluminum tape is 0.5-2.5 mm, the diameter of the aluminum sheath is 10-70 mm, the welding depth is 0.3-2.0 mm, the welding meeting angle is 4-12 degrees, the frequency of induced current is 350-500kHz, the welding power is 100-200kW and the welding speed can approach 100m / min; heating the aluminum sheath cable to be in a molten state at the edge of the meeting angle; then combining contact surface molecules by the extrusion of both side extruding devices to form crystal so as to achieve the goals of no pin holes, no tack weld and even welding; and finally reducing and shaping. The invention has the advantages of simple process, reliable quality, low cost, high production efficiency and little energy consumption.

Description

technical field [0001] The invention relates to the field of communication and information equipment, especially the cable production process. technical background [0002] Recently, aluminum sheathed cables have been developed rapidly. The difficulty in producing aluminum sheathed cables lies in the aluminum sheath. Because aluminum molecules are very active and easy to oxidize, it brings great difficulties to the welding of aluminum sheaths. In order to solve the oxidation problem, the argon arc welding process is adopted, and the inert gas argon is used as the protective gas to prevent the generation of oxide film. However, the disadvantage of argon arc welding is that the production speed is slow and the efficiency is low, only 6-15 meters per minute. In mass production, it is necessary to invest in multiple production equipment, increase energy and argon, consume more manpower, and increase the cost of the product. In addition, the characteristic of cable production is...

AI Technical Summary

Problems solved by technology

However, the disadvantage of argon arc welding is that the production speed is slow and the efficiency is low, only 6-15 meters per minute. In mass production, it is necessary to invest in multiple production equipment, increase energy and argon, consume more manpower, and increase the cost of the product. In addition, the characteristic of cable production is that the length of each product is very long, reaching more than 1,000 meters. For the welding of general metal pipes, the standard length of the pipe is only 6 meters. Therefore, there is a big difference in the difficulty of welding quality control. For metal pipes As long as the welding seam is uniform within 6 meters, no pinholes, and no false welding, if the above defects occur, one piece will be scrapped, which means a loss of 6 meters. Pinholes, no false welding, if the above defects occur, scrapping one can cause the loss of a kilometer cable

Images