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email:qianghaibin@sh-yhcd.com
High-temperature alloy refers to a type of metal material based on iron, nickel, and cobalt that can work for a long time under high temperatures above 600°C and certain stress. It has high high-temperature strength, good anti-oxidation and anti-corrosion properties, and good fatigue performance and good fracture toughness. High-temperature alloys can be divided into iron-based high-temperature alloys, nickel-based high-temperature alloys and cobalt-based high-temperature alloys based on matrix structure materials.
In research and development applications, high-temperature alloys are generally divided into cast high-temperature alloys, deformed high-temperature alloys and other types of new high-temperature alloys (powder metallurgy high-temperature alloys, dispersion-strengthened high-temperature alloys ODS, etc.) according to the preparation process. Their operating temperature range is -253 ~ +1320°C. High-temperature alloys are a type of alloy with good mechanical properties, comprehensive strength and toughness indicators, and high oxidation resistance and corrosion resistance. According to its heat treatment process, it can be divided into solid solution strengthened alloy and age strengthened alloy. Cast high-temperature alloys refer to a type of high-temperature alloys that can or can only be formed by casting methods. Since there is no need to consider its deformation processing performance, the design of the alloy can focus on optimizing its performance. For example, for nickel-based high-temperature alloys, the composition can be adjusted so that the Y structure content reaches 60% or higher, so that the alloy can still maintain excellent properties at temperatures up to 85% of the melting point of the alloy. In addition, it has a wider application field than deformed high-temperature alloys.
Our company developed a special water-cooled transformer for rare alloy high-temperature furnaces. The transformer has a total capacity of 2150kVA. The transformer is divided into 14 installation units, which are respectively arranged on the top and side of the furnace body. The installation height of the whole machine reaches 4.5 meters, which puts forward high requirements for earthquake-resistant structures. In order to ensure the temperature regulation requirements of the high-temperature furnace, the water-cooled transformer must have a wide-range voltage regulation function on the primary side. Be guaranteed the excellent electrical performance, after accurate electrical parameter design calculations and scientific structural design, the high-voltage coil adopts a self-cooling foil structure, the low-voltage coil adopts a water-cooling copper tube structure, and the overall coil is concentrically distributed axially press-fitting, which not only reduces the height of the device but also ensures efficient heat dissipation.
1. Imported DuPont N0mex-T410 insulation material is selected to ensure insulation and temperature resistance. The single spiral bare copper tube is polished to ensure heat dissipation and beauty. The high and low voltage coils adopt foil layered and water-cooled copper tube structures respectively. The low voltage coil is multi-unit parallel distributed axial press-fitting, which reduces the height of the coil and ensures efficient heat dissipation. The pressure regulating tap on the high voltage side is led out axially with a copper bar
2. The iron core has a built-in water-cooled heat exchanger to enhance the heat dissipation capacity of the iron core. It adopts 30Q120 high magnetic permeability silicon steel sheet and advanced multi-stage stepping multi-stage lamination method to effectively reduce no-load loss, no-load current and noise. During design and manufacturing, local heating problems caused by large current leakage magnetic eddy currents in the transformer have been eliminated, and the product has extremely high reliability
3. The transformer is treated with "three-proof paint" (anti-salt spray, anti-humidity and heat, and anti-mold). It has good decorative properties, strong corrosion resistance, good gloss retention, good color retention, good leveling and hiding power, simplified structure and beautiful appearance. The rectifier transformer is equipped with a temperature protection device for measurement, control, protection and communication
4. According to the water-cooling heat dissipation characteristics, reasonably distribute the water flow in the water-cooling pipeline to achieve the best cooling effect. The water system pipeline design is safe and reliable. The main pipeline uses copper pipelines to meet anti-corrosion requirements. The water outlet uses international standard sealing threads to effectively prevent leakage. The branch connecting pipes are made of high-temperature resistant nylon fiber and rubber-compatible pipes or polytetrafluoroethylene pipes to ensure reliable temperature and pressure resistance and durability
5. The whole machine meets the protection requirements of IP56 level
