Each metal has its own advantages and uses, for example some types of steel are ideal for use in household appliances, while others are suitable for use in the automotive or Marine industry, gas tanks, construction, etc. In addition, grades of materials with the same chemical composition may have different qualities depending on the manufacturing method, such as hot-rolled and cold-rolled steel. So, how to choose hot rolled steel or cold rolled steel?

The surface treatment process of stainless steel plate is divided into many kinds, such as sandblasting, passivation, electroplating, pickling, painting, oil degreasing and rust removal, anodizing and so on. But the more common basic three, they are passivation, pickling and degreasing oil.

There are many types of transformers, which can be divided into different types of transformers according to the classification method. For example, it can be divided into number of phases, application, core structure, cooling method and core type. The upstream enterprises of the transformer industry are mainly raw material suppliers, and the midstream enterprises that provide non-ferrous metal raw materials such as silicon steel sheet, copper and aluminum are transformer enterprises, which provide customized transformer product design, manufacturing, assembly and debugging, and after-sales service for downstream enterprises. Downstream application industries are mainly in power supply, power grid, petrochemical, metallurgy, railway transportation, urban construction and other fields. Each sub-industry presents different market demand characteristics.

Permanent magnet motor not only has the advantages of brushless structure and reliable operation of AC motor, but also has the advantages of DC motor speed regulation performance. It does not require excitation windings and can achieve small size and high control efficiency. It is the hot spot of electric vehicle motor research and development and application. The permanent magnet motor drive system can be divided into brushless DC motor system and PMSM system. Brushless DC motor (BLDCM) system has the advantages of large torque, high power density, simple position detection and control method, but the commutation current is difficult to reach the ideal state, which will cause torque pulsation, vibration and noise. Brushless DC motor system has certain advantages in the field of electric vehicle drive with low speed requirements, and has been widely paid attention to and applied. The permanent magnet synchronous motor (PMSM) system has the characteristics of high control precision, high torque density, good torque stability and low noise. Through rational design of permanent magnet circuit structure, higher weak magnetic properties can be obtained and the speed range of the motor can be improved. Therefore, it has a high application value in electric vehicle driving, is highly valued by the electric vehicle industry at home and abroad, and has been widely used in Japan. It is an ideal drive system for electric vehicles.

Galvanized sheet sound barrier is a common noise suppression facility in modern cities, it plays a sound insulation, dust insulation role in the roadside, construction site and around the building, to protect people's living environment. Below I will introduce the galvanized sheet sound barrier from the aspects of material characteristics, advantages and application range.

During the operation of transformers, the metal structures, parts, and components of the iron core, fixed iron core, and winding are all in a strong electric field. Under the action of the electric field, they have a high potential to ground. If the iron core is not grounded, there will be a potential difference between it and the grounded clamp, fuel tank, etc. Under the effect of the potential difference, intermittent discharge may occur.

Why do brushless motors need silicon steel sheets? Doesn't it mean that energized conductors can play a role in a magnetic field? Then why do you need silicon steel sheets?

What is Stainless Steel? It's steel with less than 1.2% carbon, at least 10.5% chromium, and other alloy elements. Steel is durable and stronger than iron, even though it can still corrode and rust. To prevent this, the steel material is usually combined with chromium.