inwire and cableWhen there are local defects in the PVC insulation layer and sheath layer, repairs such as broken glue, collapse pits, detachment wrinkles, bumps, ear wrapping edges, and breakdown of joints are allowed

Materials and equipment used
The raw materials used for plastic strips, skin blocks, and tubes should be flat, smooth, clean, and free of any defects
The instruments used are fine wood files, pliers, screwdrivers, copper sheets, or flat and smooth cable paper, plastic welding, hot air plastic welding guns, electric soldering irons, and welding guns with a power of over 300W

Repair methods for local defects

1. Methods for repairing puncture points, holes, collapse pits, etc
Use a knife to repair the defect and cut it into a slope shape with a 45 ° angle of the same size. Place the plastic block on the repair area and fix it with pliers or a screwdriver. Then use a hot air speed welding gun to continuously weld it. Use a copper sheet to compact and flatten the plastic. When welding the plastic, pay attention to the hot air temperature of the welding gun, which should not be too high to avoid burning the plastic material at the repair site. If the defect is not penetrated by the spark machine test after repair, it is qualified as shown in the following figure:
Repair method for puncture point, leakage hole, small hole and collapse pit

1-45 ° 2- Welding area 3- Cable core 4- Sheath layer

2. Repair methods for broken rubber, cracks, dents, and other defects

Cut the defective part of the plastic layer into a 45 ° slope shape with a knife to remove plastic blocks or strips with consistent shape, color, and thickness. Fix them with pliers or screwdrivers, connect them with a hot air speed welding gun, and then compact and flatten them with copper sheets. After passing the spark machine test without breakdown, it is qualified as shown in the following figure:

Repair methods for broken rubber joints, etc

1- Welding area 2-45 ° 3- Plastic layer 4- Cable core

3. Repair methods for ear protrusions, edges, folds, etc

Scrape the plastic defect flat with a knife, fill the concave part with the same plastic strip under the action of a hot air plastic welding gun, and then flatten and compact the defect repair area with a copper sheet. If it does not penetrate through the spark machine test, it is qualified

4. Repair methods for large joints

1. Repair of general large joints: Use a knife to cut the two sides of the broken adhesive on the plastic layer along the circumference into

A 45 ° slope is formed by cutting a plastic pipe with a clean color, consistent thickness, length, outer diameter, and consistent with the broken rubber joint along the axis on one side of the pipe into openings at a 45 ° angle to each other. The pipe is then tightly tied at the broken rubber joint with thin copper wire at equal distances. The same plastic strip is used to bond and weld under a hot air plastic welding gun, and then compressed and flattened with a copper sheet. After passing the spark machine test without breakdown, it is qualified as shown in the following figure:

Repair of general large joints

1- Cable core 2- Plastic layer 3- Sheath 4- Welding area to be welded

Repair of large joints during the production process: During the production process, especially due to the temporary disconnection of the protective cover, continuous joints can be made. The method is to cut the plastic protective cover into a 45 ° circular slope shape and retreat it into the mold core mouth of the machine head for 30mm. After running the rubber, the crew members cooperate with each other. When driving, connect the plastic layer by hand and then shape and repair it as shown in the picture:

Repair of large joints

1- Horizontal core 2- Horizontal sleeve 3- Adhesive outlet 4- Plastic layer

5- Cable Core 6- To be Welded

3 pairscableIf there is a quality defect on the length of the sheath that is relatively long from one end, and the other end of the sheath is mostly good, the cable length can be fixed. The repair method of the large joint in the production process can be used. However, after removing the sheath with the quality defect on one end, a larger mold can be selected on the extruder according to the process. First, squeeze and wrap the sheath at one end until it reaches the large joint. Gradually increase the traction speed to make the sheath at the interface thinner and wrap it on the original sheath cut into a slope shape. After being removed from the machine, it can be shaped and repaired