Core loss in a transformer mainly includes hysteresis loss and eddy current loss. Silicon steel has the advantage of low core loss. The addition of silicon and special manufacturing processes make the hysteresis loop of silicon steel narrower, significantly reducing hysteresis loss. At the same time, silicon steel sheets are usually laminated and insulated on the surface, which effectively reduces the cross-sectional area of the eddy current path and increases the eddy current resistance, thereby reducing eddy current loss. Lower core loss means less energy is wasted as heat in the core during transformer operation, improving the overall energy efficiency of the transformer.

Research and development of stainless steel dephosphorization technology can be broadly divided into two categories, that is, oxidation dephosphorization and reduction dephosphorization. The oxidative dephosphorization process requires BaO or CaO based alkaline slag, while the reduction dephosphorization requires Ca or calcium alloy. Regardless of the route, the core issue is to maximize the removal of phosphorus from the steel while preserving chromium. However, because the alloy steel required by modern industry contains very high alloy components, such as chromium, manganese, etc.,

The rotor core is composed of silicon steel sheet superimposed. During storage and transportation, the core coating layer, uncoated layer and processing surface are required to have no discoloration and rust. The traditional anti-rust packaging materials used in silicon steel packaging of new energy automobile motor core are prone to poor adaptability and insufficient anti-rust performance, resulting in discoloration of the coating layer, local rust corrosion of the non-coated layer and the processing surface.

Before the transformer lamination, it is necessary to check the incoming materials of the silicon steel sheet to ensure that the surface is clean and pollution-free as much as possible, and the performance is accurate and consistent. The test instruments include: on-line thickness gauge, loss gauge, coating insulation test, pinhole tester, etc. The items tested are: surface quality of silicon steel sheet, unit loss, material thickness, coating insulation, etc.

304 stainless steel plate can be used for the exterior wall decoration of the building as the appearance material. It has corrosion resistance, heat resistance and aesthetics, can resist the harsh conditions in the atmosphere, but also has a long service life.

Japanese researchers Kai Kai Yuichiro and others proposed a new heat treatment process, that is, the use of induced current to heat the motor core. In this method, a wire heating device is inserted in the motor core slot, and the induced current generated in the motor core is used as the heat source to achieve uniform heating of the core.

First, let's look at the alloying element content. As we all know, chromium and nickel are important elements in stainless steel, and they play a vital role in improving the corrosion resistance of stainless steel. Generally speaking, steel with a chromium content of more than 10.5% is not easy to rust.

First, we need to understand what each name stands for. SUS is the abbreviation of the Japanese Material Standard, so SUS304 is a stainless steel defined in accordance with the Japanese standard. And 304 is a stainless steel grade produced in accordance with the American ASTM standard. As for 06Cr19Ni10, this is the Chinese national standard for the same kind of stainless steel named.