Production process flow of electromagnetic wire
1. Material preparation
The raw materials of the electromagnetic wire are transported to the production site by trolleys. The preparation of insulating paint is completed in the paint preparation room. According to the different insulation levels of various electromagnetic wires, fully mix a proportion of the paint and diluent and evenly add them to the enameling machine.
2. Wire drawing
Wire drawing is carried out in a wire drawing machine, which is divided into one drawing or multiple drawing according to the required wire diameter. During drawing, the temperature can generally reach 60 to 100 ℃, and water-soluble lubricants are used for lubrication and cooling. When the temperature exceeds 100 ℃, cooling and heat removal are performed.
3. Water washing
Water washing refers to washing the electromagnetic wire with high-pressure water flow after being purified by hydrochloric acid and caustic soda to remove oil stains on its surface.
Annealing is generally carried out in an annealing furnace by means of electric heating, and the annealing temperature is generally controlled at 300~600 ℃. During annealing, water vapor is used for protection to prevent oxidation. After annealing, use a blower for air cooling, and enter the impregnation section at about 40 ℃.
The soaking section is carried out in the enameling machine and completed multiple times according to the requirements of the insulating layer. When impregnating, add a suitable proportion of diluent according to the needs of the coating. The diluent contains flammable and toxic liquids such as cresol and xylene.
The drying of the electromagnetic wire is carried out in a drying furnace, and the drying temperature depends on the speed of wire drawing, which is generally 300-400 ℃. Up to 670 degrees Celsius. Drying and exhaust gas discharge are conducted simultaneously. The exhaust gas discharged (at a temperature of 300-400 degrees Celsius) contains toxic and flammable vapors such as cresol, phenol, and xylene, which are discharged into the atmosphere by a exhaust fan after reaching the target through catalytic reaction.
The take-up device is used to wind the dried electromagnetic wire onto the wire reel. A small amount of lubricant (974 gasoline, cyclohexane) needs to be added during take-up.
8. Packaging and warehousing
After passing the inspection, wrap the wrapped wire reel with plastic film and put it into a cardboard box or tube. According to user needs, package it into a wire trailer, and load and unload it to a specialized warehouse.
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On August 20th, the inauguration ceremony for the completion and operation of the Chongqing New Smart City Operation Management Center was held as a fundamental, pivotal, and intensive project for the construction of Chongqing's new smart city
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