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Addtime:2023-08-18
Source:Yueqing Xujing Fuse Factory
"Graphene, carbon nanotubes, aerogels, fullerenes, amorphous alloys, superconducting materials, metamaterials, ionic liquids, 3D printing materials, and metal foam." The New Materials Industry Capital Technology Summit released ten new materials with potential in the future.
Amorphous alloys
Breakthrough: high toughness, excellent magnetic permeability and low magnetic loss, excellent liquid fluidity.
Development trend: in high-frequency low-loss transformers, structural parts of mobile terminal equipment, etc.
Fullerenes
Breakthrough: linear and nonlinear optical properties, alkali metal fullerene superconductivity, etc.
Development trend: In the future, there are important prospects in the fields of life sciences, medicine, astrophysics, etc., and are expected to be used in optoelectronic devices such as optical converters, signal conversion and data storage.
Aerogel
Breakthrough: high porosity, low density, light weight, low thermal conductivity, excellent thermal insulation properties.
Development trend: potential new materials, in energy conservation and environmental protection, thermal insulation electronic appliances, construction and other fields have great potential.
Carbon nanotubes
Breakthrough: high conductivity, high thermal conductivity, high modulus of elasticity, high tensile strength, etc.
Development trend: electrical and catalyst carriers of functional devices, sensors, etc.
Graphene
Breakthrough: Extraordinary electrical conductivity, low resistivity, low electron migration speed, tens of times stronger than steel and good light transmission.
Development trend: The 2010 Nobel Prize in Physics has created a hot spot in technology and capital market graphene in recent years, and will grow explosively in the fields of photoelectric display, semiconductor, touch screen, electronic devices, energy storage battery, display, sensor, semiconductor, aerospace, military industry, composite materials, biomedicine and other fields in the next 5 years.
Superconducting materials
Breakthrough: In the superconducting state, the material has zero resistance, no current loss, and the material exhibits diamagnetism in the magnetic field.
Development trend: In the future, if breakthroughs in high-temperature superconducting technology are made, it is expected to solve problems such as power transmission loss and heating of electronic devices, as well as green transmission magnetic suspension technology.
Metamaterials
Breakthrough: It has physical properties that conventional materials do not have, such as negative magnetic permeability, negative permittivity, etc.
Development trend: change the traditional concept of processing according to the nature of the material, and in the future, the characteristics of the material can be designed according to the needs, with unlimited potential and revolution.
Metal foam
Breakthrough: light weight, low density, high porosity, large specific surface area.
Development trend: conductive, can replace the application field of inorganic non-metallic materials that cannot conduct electricity; It has great potential in the field of sound insulation and noise reduction.
3D printing materials
Breakthrough: Change the processing method of traditional industry, can quickly realize the molding of complex structures, etc.
Development trend: Revolutionary molding methods, in the field of complex structure molding and rapid processing molding, there is great prospects.
Ionic liquids
Breakthrough: High thermal stability, wide liquid temperature range, adjustable acidity and alkalinity, properties, coordination ability, etc.
Development trend: It has broad application prospects in the field of green chemical industry, as well as the field of biology and catalysis.
Addtime:2023-08-18
The melt is blown at the crimping or other parts, and there are generally no serious burn marks. The reasons for this may be: the melt section is too small; The melt has scar defects during installation; The fuse porcelain tray is not fixed; The melt crimping is not tight; The melt runs too long and produces a copper-aluminum oxide film, which increases the contact resistance.
Addtime:2023-08-18
High-voltage fuses are simple protective appliances, which are used to protect electrical equipment from overload and short-circuit currents; According to the installation conditions and uses, choose different types of high-voltage fuses, such as outdoor drop type, indoor type, for some special equipment high-voltage fuses should be selected special series; What we often call fuses is a fuse.
Addtime:2023-08-18
Fuse in low-voltage distribution system is a kind of electrical appliance that plays a role in safety protection, fuse is widely used in power grid protection and electrical equipment protection, when the power grid or electrical equipment short circuit fault or overload, can automatically cut off the circuit, to avoid electrical equipment damage, to prevent the spread of accidents.
Addtime:2023-08-18
During the normal operation of electrical equipment, the fuse should not be blown out; In the event of a short circuit, it should be fused immediately; When the current changes normally (such as the motor starting process), the fuse should not be blown out; When the electrical equipment continues to be overloaded, the fusing should be delayed. The rated voltage of the fuse should be greater than or equal to the rated voltage of the circuit.
Addtime:2023-08-18
The high-voltage drop fuse adopts single-phase operation of an insulated rod and does not allow operation with load. It has been found through practice that when the phase is mistakenly pulled with load, most cases are similar to disconnecting the parallel loop or loop, and the disconnection voltage is low, so strong arcing does not occur. When the second phase is pulled open with load, the break voltage is higher because the break voltage is the line voltage.
Addtime:2023-08-18
"Graphene, carbon nanotubes, aerogels, fullerenes, amorphous alloys, superconducting materials, metamaterials, ionic liquids, 3D printing materials, and metal foam." The New Materials Industry Capital Technology Summit released ten new materials with potential in the future.
Addtime:2023-08-18
Users in the logistics industry can log in to China Industrial Electrical Appliance Network to register as members and publish logistics information. China Industrial Electrical Appliance Network provides better service support for our customers, and hopes that customers in the logistics industry will release true and reliable logistics information based on the principle of honesty and credit. Now when you think of "logistics", you should think of the logistics and transportation problem of Double 11, in fact, logistics is a word imported from Japanese materials.
Addtime:2023-08-18
1. The specifications of the fuse should meet the requirements of the protected lines and equipment; The melt shall not be cut small or used together, and metal wire is strictly prohibited instead of fuse.
2. The melt should have a protective cover. Tubular fuses shall not be used without tubes; Melters with filling materials shall not be modified for use.
Addtime:2023-08-18
In order not to fuse the fuse when the motor starts, the rated current of the selected fuse is 1.5~2.5 times larger than the rated current of the motor, so that even if the motor is overloaded by 50%, the fuse will not blow, but the motor will not burn out in 1 hour. Therefore, the fuse can only be used as short-circuit protection for motors, wires, and switchgear, and cannot play the role of overload protection. Only equipment such as thermal relays can be used as overload protection for motors.
Addtime:2023-08-18
When removing the DC control fuse, it should be positive first, then negative. When installing the DC control fuse, it should be installed first negative and then positive. The purpose of this is to prevent parasitic circuits and avoid malfunction of the protective device. The fuse should be installed and taken quickly, not continuously turned on and off, and there should be a period of time between removal and reinstallation (should not be less than 5 s).
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