Insulated wire
Copper wire is one of the basic materials used in transformer manufacturing, performing the fundamental function of voltage conversion. Commonly denoted as WIRE, its true English name should be COPPERWIRING.
Definition: Various coils, transformers, and other components used for consumer electrical appliances or industrial applications, where all conductors are made of copper and are coated with varnished insulation for insulation purposes, are known as varnished copper wire. Transformers or inductors must be wound with varnished copper wire, thus it is necessary to understand the types of insulation and temperature ratings of varnished wire, as well as the naming methods or specifications set by manufacturers for the insulation materials, in order to facilitate production and management activities.
Line Racks and Bases
The frame and base form the skeleton supporting the coil. Paired with a PIN (some frames do not have a PIN and instead use wires), they create a complete support structure. This allows the transformer's input and output lines to be conveniently wrapped and soldered onto the PIN. Its English name is BOBBIN.
Three, broadly speaking, there are two main types of cores: one is for low-frequency transformers, such as silicon steel sheets and similar materials; the other is for high-frequency transformers. Strictly speaking, these should be called magnetic cores, which are formed by high-temperature sintering of ferrite magnetic powder. The term "core" commonly heard in factories is just a conventional name. Since everyone uses it this way, we might as well continue with it.
The role of the core is to increase the magnetic field strength and form a loop. It is called an iron core primarily because it is made of ferrite magnetic material, with silicon steel sheets being produced by infiltrating a certain proportion of silicon or silicon components into a soft steel; while the magnetic core is formed by adding a certain proportion of nickel, manganese, zinc, etc. to iron oxide and then sintering at high temperature. In the following section, the term "core" refers specifically to the magnetic core.
Silicon Steel Sheets
1. Materials vary based on their steel content; commonly used ones include:
ZII (M6) - Class Z silicon steel sheets, mainly including H18, H20, H23, H50, H60, etc.
In general, silicon steel sheets with higher steel content are heavier than those with lower content. Silicon steel sheets are categorized into two types: sintered (brown) and unsintered (gray-white).
2. Our factory commonly uses silicon steel sheets with thicknesses of 0.35MM and 0.5MM, primarily for 50Hz power transformers. Occasionally, we also employ 0.1MM thick silicon steel sheets, which are for more specialized applications, often in aircraft and ships. These are used for power transformers with a frequency of 400Hz, which are more expensive and have a unique design.
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