Bad cable repair method

First, the scope of application of wire and cable PVC insulation layer and jacket layer outlet local defects, allowing the repair, such as broken plastic, pit, disjointed, wrinkled, bump, ear, edge, breakdown, joints and other phenomena.

Second, the use of materials and equipment Raw materials use the same plastic plastic strips, skins, blocks, tubes, raw materials should be smooth, clean, no other defects.

The instruments used are fine wood files, knives, scissors, pliers, screwdrivers, copper sheets, or smooth, flat cable paper. Hot-air plastic welding torches, soldering irons and welding torches for plastic welding have a power of 300W or more.

Third, the local defect repair method 1. Breakdown points, holes, pits and other repair methods used to trim the defects with a knife, and cut into 45-degree angle of the same shape and size of the slope of the plastic block, on the repair area, with pliers or The screwdriver is fixed and then welded continuously with a hot air speed welding torch. The copper sheet is used for compaction, compression and flattening. When welding plastic, pay attention to the hot air temperature of the welding torch not too high, so as not to repair the plastic scorch at the repair site. The repaired defect was tested by the spark machine and was not qualified for breakdown. As shown in the following figure: Repair method for breakdown point, eye breakage, and hole collapse pit 1—45° 2—waiting for welding 3—core 4—sheath layer 2 breaks rubber, cracks, dents, holes, etc. The repair method uses a knife to cut into a 45-degree-angled slope in the defect of the plastic layer. After the shape, color, and thickness of the same plastic block or strip are fixed with a pliers or a screwdriver, they are connected with a hot air speed welding gun and then the copper sheet is used. Compaction, compression, flattening, and finally spark test, no breakdown is qualified.

As follows: broken plastic, mouth and other repair methods 1 - to be welded at 2 - 45 ° 3 - plastic layer 4 - core 3 ears, bumps, ribs, wrinkles and other repair methods to use plastic defects The knife is scraped flat, and the concave part is filled with the same plastic strip under the action of a hot wind plastic welding torch, then flattened, pressed, and compacted with a copper piece at the defect repairing place. After the spark machine test, no breakdown is qualified.

4. Repair methods of large joints 1) General repair of big joints: cut both sides of the broken plastic with a knife on the plastic layer along the circumference to form a slope with a 45 degree angle, take a clean, uniform color and thickness, length and outside The plastic pipe with the same diameter as the broken glue, cut along the axis along the axis of the pipe to form an opening at an angle of 45° with each other, is put on the broken glue, and is tightly lapped with fine copper wire, and then the same plastic strip is used in hot air. Under the welding of the plastic welding torch, the bonding welding is good, and the copper sheet is used for compaction, compression and flattening. After the spark machine test does not breakdown is qualified.

As follows: repair of general large joints 1 - core 2 - plastic layer 3 - jacket 4 - to be welded 2) repair of large joints in the production process: in the production process, due to other reasons in the temporary parking The sheath is disconnected and the connector can be continuous. The method is to cut the plastic jacket into a 45-degree-circular slope shape, withdraw it to the machine head, extend it into the mouth of the mold core for 30mm, and then run the glue. After the glue is run, the crew members cooperate with each other and drive. When the plastic layer is connected by hand, then plastic repair.

Repair of large joints 1 - transverse core 2 - cross sleeve 3 - plastic mouth 4 - plastic layer 5 - core 6 - to be welded at 3) the length of the cable jacket from the end of the head Quality defects occur, while most of the other breakages are well-jacketed and the length of the cable is fixed. The method of repairing large joints during production can also be used. Only after removing the end cap with quality defects, select a larger die on the extruder. Press the process to squeeze the sheath on one end first. Gradually increase the traction speed at the large joint to gradually make the sheath at the interface gradually. Thinned and covered on the original sheath cut into the slope shape, after the next machine and plastic repair.

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