- 材质:
- 软磁合金
- 规格:
- 板棒卷齐全
- 品牌:
- 新日铁 宝钢
Soft magnetic alloy
Soft magnetic alloy is a type of alloy with high magnetic permeability and low coercive force in a weak magnetic field. This type of alloy is widely used in the radio and electronics industry, precision instrumentation, remote control and automatic control systems. Together, it is mainly used in energy conversion and information processing. It is an important material in the national economy.
Introduction
Physical properties
Main types
Common labels and uses. Iron-nickel soft magnetic alloy. Magnetic temperature compensation alloy 3. Corrosion-resistant soft magnetic alloy. High saturation magnetic induction intensity soft magnetic Alloy. High hardness, high resistance and high magnetic permeability alloy. Introduction to soft magnetic alloy for magnetic heads
Physical properties
Main types
Common labels and uses. Iron-nickel soft magnetic alloy. Magnetic temperature compensation alloy 3. Corrosion-resistant soft magnetic alloy. High saturation magnetic induction strength soft magnetic alloy. High hardness, high resistance and high magnetic permeability alloy. Soft magnetic alloy for magnetic heads
Introduction
Soft magnetic alloy is easily magnetized under the action of external magnetic field. After removing the magnetic field A magnetic alloy whose magnetic induction intensity basically disappears. The hysteresis loop area is small and narrow, the coercivity is generally lower than /, the resistivity is high, the eddy current loss is small, the magnetic permeability is high, and the saturation magnetic induction is high. Generally processed into plates and strips. Prepared by melting method. Mainly used as various core components in electrical appliances and telecommunications industries (such as transformer cores, relay cores, chokes, etc.). Commonly used soft magnetic alloys include low carbon electrical steel, Amco iron, silicon steel sheets, nickel-iron soft magnetic alloys, iron-cobalt soft magnetic alloys, iron-silicon soft magnetic alloys, etc.
A magnetic alloy that is easily magnetized under the action of a soft magnetic alloy field, and the magnetic induction intensity (magnetic induction) basically disappears after the external magnetic field is removed. The hysteresis loop area is small and narrow, and the coercive force is generally lower than that (see precision alloy). At the end of the century, low carbon steel plates were used to manufacture motor and transformer cores. Silicon steel sheets with higher magnetic properties soon replaced mild steel in manufacturing products for the power industry. appeared in 1999 - alloys to suit the needs of the telephone system of the time. Later alloys, alloys and -alloys with different magnetic properties appeared to meet special applications. China began producing hot-rolled silicon steel sheets in 3 years. At the end of the 1990s, research began on soft magnetic alloys such as - and other soft magnetic alloys, and the production of some major soft magnetic alloys began in the 1990s. The production of cold-rolled silicon steel strips began in the 1990s. The main magnetic properties of soft magnetic alloys are: ① low coercive force and hysteresis loss ② high resistivity (r) and low eddy current loss ③ high starting magnetic permeability and maximum magnetic permeability. Some alloys are in the low magnetic field range The magnetic permeability (B/) remains constant, ④ the saturation magnetic induction (B) is high, ⑤ the hysteresis loop of some alloys is rectangular, and the rectangular ratio, that is, the residual magnetization/maximum magnetic induction (Br/B) is high. These magnetic properties are closely related to the structural state and composition of the alloy. Impurities such as carbon, sulfur, nitrogen and oxygen in alloys are particularly harmful to magnetism because they distort the crystal lattice and make it difficult to magnetize. Carbon and nitrogen can also cause magnetic aging phenomena. Soft magnetic alloys generally require large grain sizes in finished products in order to reduce the sum value. Generally, the magnetism of ferromagnetic metals varies with the direction of the crystal axis. For example, the direction of iron is easy to magnetize and the direction of iron is difficult to magnetize. Controlling grain orientation can therefore lead to better magnetic properties in specific directions of the material. The resistivity (r) of iron is low, and adding certain alloying elements can increase the value. The effect of adding silicon and aluminum is the most obvious. Adding any alloying element (except cobalt) to iron will reduce its saturation magnetic induction B.
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