Pre-operation preparation

• Equipment inspection
  • Visual inspectionCarefully inspect the device casing for any damage or cracks, and check if the wires are worn or exposed. For example, if a crack is found in the insulation layer of a wire, continuing to use it may cause electrical leakage, endangering the safety of operators and requiring timely repair or replacement.
  • Functional testingAfter turning on, check whether the temperature control, heating time setting, pressure adjustment and other functions are normal. It can be tested through simulation operations, such as setting a lower temperature and a shorter time, to observe whether the equipment can heat up and stop normally.
• Material Preparation
  • Hot repair material adaptationSelect appropriate materials such as hot repair adhesive and hot repair tape based on cable model, specifications, and damage situation. Different materials of cables need to be matched with corresponding heat repair materials, otherwise it will affect the repair effect. For example, rubber cables should use compatible hot patching adhesive.
  • Auxiliary tool equipmentPrepare scissors, sandpaper, cleaning agents, and other auxiliary tools. Scissors are used to cut hot repair materials, sandpaper is used to polish cable surfaces, and cleaning agents are used to remove oil stains and impurities.
• Cable processing
  • Cleaning of damaged areasUse cleaning agents and sandpaper to clean the damaged parts of the cable and the surrounding oil, impurities, and oxide layers, exposing the cable body. For example, for cables with a lot of oil stains, first wipe them with a cleaning agent, and then polish them with sandpaper to ensure good adhesion between the hot repair material and the cable.
  • Trimming of damaged areasIf there are burrs or irregular edges on the damaged part of the cable, trim it neatly with scissors or cutting tools to avoid affecting the heat repair effect.

operating process

• temperature control
  • Reasonably set the temperatureSet the appropriate heating temperature based on the requirements of the hot repair material and cable material. Excessive temperature can cause the hot repair material to burn and the cable insulation layer to age, while insufficient temperature can prevent the hot repair material from fully melting and bonding. For example, the common hot repair temperature for rubber cables is generally set between 120 ℃ and 150 ℃.
  • Real time monitoring of temperatureDuring the heating process, use a thermometer or the device's built-in temperature sensor to monitor the temperature in real time and ensure that it is within the set range. If the temperature fluctuates abnormally, adjust the heating power in a timely manner or check for equipment malfunctions.
• stress regulation
  • Apply appropriate pressureApply appropriate pressure to the hot patching material during hot patching to ensure a tight fit with the cable. Insufficient pressure can cause gaps between the heat repair material and the cable, affecting the bonding strength; Excessive pressure may damage the cable. The pressure can be controlled by adjusting the pressure regulating device of the equipment.
  • Ensure even pressure distributionEnsure that the pressure is evenly distributed throughout the entire hot repair area, avoiding excessive or insufficient local pressure. It is possible to determine whether the pressure is uniform by using pressure sensors or observing the deformation of the hot repair material.
• heating time
  • Accurately set the timeSet the appropriate heating time based on the thickness of the hot repair material and the heating temperature. The time is too short, and the hot patching material cannot fully melt and solidify; Time is too long, wasting energy and affecting cable performance. For example, the heating time for thinner hot patching adhesive may only take a few minutes, while thicker hot patching tape may take more than ten minutes.
  • Avoid stopping midwayTry to avoid stopping midway during the heating process to avoid affecting the heating effect. If heating needs to be stopped due to special circumstances, it should be restored as soon as possible and the heating time should be appropriately extended.

safety protection

• personal protection
  • Wear protective equipmentOperators need to wear protective equipment such as insulated gloves, protective goggles, and work clothes. Insulated gloves can prevent electric shock, protective goggles can prevent splashing of heat repair materials from injuring the eyes, and work clothes can protect the body from high temperatures and chemical substances.
  • Avoid direct contactDuring the heating process, avoid direct contact with the hot repair area and heating element to prevent burns. Tools such as clips and tweezers can be used for operation.
• Equipment safety
  • grounding protectionEnsure good grounding of the equipment to prevent electrical leakage accidents. The grounding resistance should comply with relevant standards, generally not exceeding 4 Ω.
  • Fire prevention measuresEquip the operation site with fire extinguishers and other firefighting equipment to avoid using the equipment in flammable and explosive environments.

Post operation processing

• Cooling treatment
  • natural coolingAfter the hot repair is completed, let the cable cool naturally and avoid forced cooling methods such as rinsing with water, otherwise it may cause uneven shrinkage of the hot repair material and affect the repair effect.
  • CooldownThe cooling time is determined based on the thickness of the hot patching material and the ambient temperature, and generally requires waiting for several hours until the cable cools down.
• quality inspection
  • Visual inspectionCheck whether the appearance of the hot repair area is flat and smooth, and whether there are defects such as bubbles, cracks, and delamination. If there are defects, rework and handle them promptly.
  • Performance TestConduct insulation resistance tests, voltage withstand tests, and other performance tests on the repaired cables to ensure that their performance meets the requirements. If the test fails, analyze the cause and repair it again.
• Equipment maintenance
  • cleaning equipmentAfter use, promptly clean the equipment of any residue, dust, and other debris from the hot repair materials to keep the equipment clean.
  • regular maintenanceRegularly maintain the equipment, check the performance of heating elements, pressure regulating devices, temperature sensors and other components, replace worn parts, and ensure the normal operation of the equipment.