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  • What are the working principles of electric heating coils
    What are the working principles of electric heating coils? First, the working principle of electric heating coils: High-frequency high-frequency large current flows to heating coils that are wound into a ring or other shapes. As a result, a strong magnetic beam that changes instantaneously is generated in the coil. When a heated object such as a metal is placed in the coil, the magnetic beam will penetrate the entire heated object, and the corresponding direction of the heating current inside the heated object will correspond to Large eddy current. Because there is resistance in the heated object, a lot of Joule heat will be generated, which will cause the temperature of the object to rise rapidly. To achieve the purpose of heating all metal materials. Second, then electricity ...

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  • Reliability and life of electric heating coil
    The reliability and life of the electric heating coil are closely related to the type of the core. For example, the core of the metal tube rolled into a network pipe as a trunk line has self-filling problems and is very sensitive to the presence of non-condensable gas. , So its reliability is poor. In contrast, axial channel heating coils are much more reliable. Reliability also includes predictability and reproducibility of performance. Multilayer network dies are worse in this regard. Its temperature difference has a great relationship with the tightness between the mesh layers, and it is difficult to ensure consistency in the process. The sintering process of the core (sintered powder, mesh, fiber, etc.), the performance reproducibility is better. The life of the heating coil is mainly determined by ...

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  • Fixed installation of cast aluminum electric heating coil
    The cast aluminum electric heating coil is fixedly installed in the use of mechanical heating equipment. Some series of cast aluminum heating coils do not need to be fixed. They can be directly installed in the heating holes for heat transfer, such as mold heating tubes; The series needs to be strengthened and fixed in order to make it more stable to work properly, such as single-headed heating tube. Here we mainly discuss how to fix the heating tube and how to install it? We all know that fixing and installing the heating pipe is a subtle and indispensable link to ensure its normal and stable operation. Without this link, the heating pipe will collapse, the work will be unstable, and local bare leakage will easily become the hidden danger of accidents .. .

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  • Why is the resistance of the cast aluminum electric heating coil smaller?
    What is the reason why the resistance value of the cast aluminum electric heating ring becomes smaller? The cast aluminum electric heating ring uses a tubular electric heating element as a heating element, and the component is bent and formed into a mold to cast aluminum into various products. It can be closely attached to the body to be heated, with uniform heat generation, good thermal conductivity and long service life. This product is currently one of the ideal heaters at home and abroad. According to the needs of users, the insulation layer can be added on the outside of the heater. The thermal efficiency is higher and the electricity consumption can be saved by about 20%. Mainly used in plastic machinery, ovens, boilers, pipes and non-corrosive liquids to heat up the technical parameters of cast aluminum heating rings 1. Conditions of use: ambient temperature -20 ℃ ~ + 60 ℃; relative humidity <80%. 2...

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  • Application and precautions of cast aluminum electric heating coil
    Application and precautions of cast aluminum electric heating ring As the name suggests, cast aluminum electric heating ring is composed of high-quality metal aluminum alloy as raw material shell, die-casting to form electric heater, and tubular heating element as heating element. After years of industry research by Chinese electric heater network technicians, it has been molded into various shapes, such as round, right-angle, flat, and other special shapes. After careful processing, it is closely connected with the object being heated. Together. Cast aluminum heater is a kind of heater with high efficiency and uniform heat generation. It has a metal aluminum alloy with excellent thermal conductivity to ensure uniform surface temperature. The hot and cold points of the equipment are removed to make its service life more ...

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  • Cast aluminum electric heating coil _ 8 points to note when using electric heating pipe
    Cast aluminum electric heating coil _ pay attention to the use of electric heating pipe ... Cast aluminum electric heating coil manufacturers remind the electric heating pipe to pay attention to the use of matters: 1. Components are allowed to perform tasks under the following conditions: A. The absolute humidity of the air is not more than 95%, and there is no explosive or corrosive gas. B. The task voltage should be no more than 1.1 times the extra value, and the case should be grounded ineffectively. C. Insulation resistance ≥1MΩ Dielectric strength: 2KV / 1min. 2. The electric heating tube should be well positioned and fixed. The ineffective heating area must be completely immersed in liquid or metal solids. Empty burning is strictly prohibited. When scale or carbon deposits are found on the outside of the tube, it should be cleaned and reused in time to avoid heat dissipation and extend the service life. 3.Yuan ...

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  • Performance and application of ceramic electric heating coil
    Performance and use of ceramic electric heating coils Performance and use of ceramic electric heating coils 1. One is to wire the alloy wire on a small ceramic block, and the outer packaging is made of stainless steel shell. Ceramic heating rings are widely used in plastic machinery and chemical fiber machinery. 2. Ceramic heater is a heater with uniform heat distribution and good thermal conductivity of metal alloy, which can ensure uniform hot surface temperature and eliminate hot and cold points of equipment. Adding heat insulation equipment on the external cooling surface, sintering infrared on the internal cooling surface can save 30% of power consumption 3. Ceramic heaters are not made by ordinary mica winding method, but are made by ceramic strip threading method, so The power of the product is 0.5 to ...

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  • Advantages of ceramic electric heating coil
    Advantages of ceramic electric heating coils The requirements and applications of ceramic electric heating coils are becoming more and more widespread, but many users may not have a comprehensive understanding of ceramic heating coils. Let me give a brief introduction today: ceramic heating coils are made by casting alloy wire. Radiation-heatable ceramics, popularly speaking, can be heated with a long distance; the other is to pass alloy wires in small ceramic blocks, and the outer cover is made of stainless steel. It is widely used in plastic machinery and chemical fiber machinery, which can only fit the heat conduction. Ceramic fiber is a refractory insulation material. It does not generate heat by itself, but provides thermal insulation and protection for heat. It is mainly embedded in ceramic fiber through pre-embedding (or post-processing) ...

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  • The use method and advantages of ceramic heating ring
    The use and advantages of ceramic heating coils There are many specifications of ceramic heating coils, which are basically customized to the manufacturer according to their needs, including the diameter and height of the heating coil, and the shape is basically strip-shaped, not yet assembled For your own needs, do you want to install thermal insulation cotton? Install the thermal insulation cotton into a circle as shown in the figure and fix it with screws. Generally, there are ceramic cables, high temperature cables, screw cables, plug cables, etc. Simply connect the cable outlets after assembly, check whether the orientation and specifications of the device are consistent with the heater, and whether the operating voltage is common. The operating voltage must not exceed 10% of the rated value. The wiring part is placed outside the heating layer and insulation layer, and ...

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  • Electric heating coil resistance heating principle
    Electric heating coil resistance heating principle The electric heating coil uses the Joule effect of the amount of current to convert electromagnetic energy into energy to warm the block. The heating coil is generally divided into immediate resistance wire heating and immediate resistance wire heating. The operating voltage of the two switching power supplies is immediately added to the heated block. When the current flow expires, the electric heater ironing machine of the heated block itself becomes hot. The block that can be immediately heated by the resistance wire must be an electrical conductor, but has a higher resistance. Since the heat is generated in the heated block itself, it is classified as internal heating, and the thermal efficiency is very high. Immediate resistance wire heating needs to be made of professional aluminum alloy or non-metallic materials to make hot components, and the hot components generate energy, ...

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  • Energy-saving improvement results of electric heating coils
    Results of energy-saving improvement of electric heating coils With China's economic reforms, traditional industrial products are undergoing various improvements. The heating coils are gradually improved from high energy consumption to energy-saving ones, which will adapt to international trends! Electric heating coils, as auxiliary heating equipment for injection molding machines, generally account for more than 20% of the energy consumption of the entire machine. Since 2013, many technology companies in the market have invested in research and development of energy-saving processing of heating coils and basically introduced two major energy-saving measures Heating loop factions: infrared energy-saving heating coil technology and electromagnetic energy-saving heating coil technology. The following is a brief introduction to two technical schools: electromagnetic energy-saving heating coil: the principle of electromagnetic heating is through the electronic circuit board components ...

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  • Difference between ceramic electric heating coil and mica heating coil
    Differences between ceramic electric heating coils and mica heating coils I. Overview of ceramic electric heating coils and stainless steel mica heating coils 1. Ceramic electric heating coils are not made by the ordinary mica twisting method, but by the ceramic strip threading method. The power of the product is 0.5 ~ 1.5 times higher than ordinary. 2. The stainless steel mica heating coil is made of high-quality nickel-chromium alloy heating wire as the heating element, and is wound with natural mica as the edge layer. The outer layer is made of high-quality stainless steel as the conductive heating layer. The mica heating coil can be according to the needs of users. Machined rings, plates, and various shaped products. Second, the difference between the advantages and disadvantages 1, ceramic electric heating coils are flexible, curved into an arc, tile ...

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  • Advantages of ceramic electric heating coil
    Advantages of ceramic electric heating coils The requirements and applications of ceramic electric heating coils are becoming more and more widespread, but many users may not have a comprehensive understanding of ceramic heating coils. Let me give a brief introduction today: ceramic heating coils are made by casting alloy wire. Radiation-heatable ceramics, popularly speaking, can be heated with a long distance; the other is to pass alloy wires in small ceramic blocks, and the outer cover is made of stainless steel. It is widely used in plastic machinery and chemical fiber machinery, which can only fit the heat conduction. Ceramic fiber is a refractory insulation material. It does not generate heat by itself, but provides thermal insulation and protection for heat. It is mainly embedded in ceramic fiber through pre-embedding (or post-processing) ...

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  • How to install and replace the electric heating coil
    How to install and replace the electric heating ring 1. How to install and replace the electric heating ring 1. After the mold has cooled, remove the hot half mold from the mold; 2. Remove the positioning ring (the other role of the positioning ring is to fix the thermal nozzle); 3. Use M3 screws to install on the lifting hole, remove the thermal nozzle, pay attention to the heating ring can not be squeezed; 4, remove the snap ring and heating ring heat shield; 5, hold the head of the thermal nozzle, rotate clockwise and Turn and pull the heating ring away from the thermal nozzle gradually; 6. When installing a new wire, the heating ring should be as close as possible to the main body of the thermal nozzle, and the front end of the heating ring should reach the main body of the ring groove at the front end of the core of the thermal nozzle; 7 、 Turn the heating ring clockwise to the head of the thermal nozzle ...

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