The introduction of amorphous alloy strip

      Amorphous alloy strip is introduced People contact materials in our daily life generally has two kinds: one kind is a crystalline material, another is a crystalline materials. And amorphous materials, refers to the material internal arrangement of atoms follow certain rules. Conversely, internal atoms are arranged in a random state, amorphous materials, metal, its internal atoms are arranged orderly, belong to crystalline materials. Scientists have discovered that the metal melting, internal atoms in the active state. A metal begins to cool down, but the atoms as the temperature drop, but slowly is arranged according to certain crystalline state regulation, the formation of crystal. Soon if the cooling process, the atoms could rearrange is solidification, thus was born the amorphous alloy, the preparation of amorphous alloy is a kind of rapid solidification process. Would be in a molten state of high temperature molten steel into the high-speed rotating on the cooling of the roller. Molten steel at millions of degrees per second cooling rapidly, with only one over one thousand of a second time will fall below 200 ℃ 1300 ℃ of molten steel, forming of amorphous strip. According to the width of the strip can be divided into narrowband amorphous strip below (100 mm), broadband amorphous strip (140 mm) above. Performance with the highest saturated magnetic induction intensity, high permeability, low coercive force, low loss, low exciting current and good stability and aging stability. Strip evenly, high stability, flexibility is good, not easy to break, has the high fill factor.

      Amorphous alloy strip 2 1. The classification of amorphous strip (1) the iron-based amorphous alloys, the main elements are iron, silicon, boron, carbon, phosphorus, etc. Are the characteristics of strong magnetic, saturated magnetic induction intensity of 1.4 T ~ 1.7 T), magnetic permeability, soft magnetic properties such as exciting current and the iron loss is better than that of silicon steel sheet, the price is cheap, is most suited to replace silicon steel sheet, especially low iron loss (for the orientation of the silicon steel sheet 1/3 ~ 1/5), instead of silicon steel for distribution transformer can reduce iron loss 60% ~ 70%. Iron-based amorphous alloy strip thickness is 0.03 mm or so, widely used in low frequency transformer core (typically below 10000 hz), such as distribution transformers, intermediate frequency transformer, power inductors, reactor, etc. (2) iron nickel based amorphous alloy, composed mainly of iron, nickel, silicon, boron, phosphorus, etc, and their magnetic weaker (below saturated magnetic induction intensity is about 1 t), the price is more expensive, but the permeability is higher, can replace silicon steel sheet or permalloy, used as a high demand of low frequency transformer core, such as leakage switch transformer. (3) cobalt-based amorphous alloy, is composed of cobalt and silicon and boron, sometimes in order to obtain certain special properties also add other elements, due to containing cobalt, their price is very expensive, weak magnetic (saturated magnetic induction intensity generally under 1 t), but very high magnetic permeability, commonly used in demanding military power transformer, inductance, etc., to replace permalloy and ferrite. 2. The application areas of amorphous strip (1) the power electronic technology, high power, high frequency transformer; Inverter power supply transformer; High-power switching power supply transformer. (2) communication technology: SPC switching power supply; The data exchange interface components; Pulse transformer; UPS power supply filtering and storage power, power factor correction choke choke, standards. (3) resistance to electromagnetic interference components: ac power. Silicon controlled rectifier. EMI differential mode; Common-mode inductor; The output filter inductance. (4) switching power supply: magnetic saturation reactor; Magnetic amplifier; Peak suppressor, Choke. (5) sensor: current voltage transformer; Zero sequence current transformer; The leakage switch transformer; Security sensor tag. But for the moment, amorphous strip is mainly applied to replace the transformer core material (silicon steel, ferrite), belongs to a new generation of transformer core. Frequency power frequency transformer can be divided by frequency (50 hz or 60 hz), intermediate (60 hz and 20 KHZ), high frequency (more than 20 KHZ), corresponding to the application of switch power supply main transformer (medium power of the main transformer, control transformer, filter inductor, energy storage inductor, reactor, magnetic amplifier and saturable reactor core, iron core inductor, isdn miniature isolation transformer core, transformer core), aviation, railway control system for transformer quenching equipment, machinery parts, laser power supply transformer.

       Narrow band of amorphous strip is mainly used in intermediate frequency and high frequency power transformers and other products, the four parts of the market space is limited, maintain normal growth. Broadband amorphous strip is mainly used in the field of transmission and transformer, especially the application of distribution transformer.