Year1
- 规格：
- 齐全
- 包装：
- 标准
- 用途：
- 广泛
Main product brands and specifications:
Precision alloys: (, D,,, etc.)
(etc.)
(,,,, etc.)
/> (,,,,, etc.)
(,,,,, etc.)
High temperature alloys:,,,,,, etc.
Other nickel alloy grades:,,,
.< br/>Cold-drawn wire rods
Hot-rolled wire rods and bars
.
Cold-rolled strips.-
Hot-rolled strips
A kind of material that has the characteristics of Low-frequency soft magnetic material with high magnetic permeability and low coercivity. Early iron-nickel alloys were used for telephone communications. Later, a heat treatment process and vacuum smelting method were used to greatly improve the alloy properties. The magnetic permeability of iron-nickel alloy containing % in a weak magnetic field is about ~ times higher than that of silicon steel. It is commonly used in sensitive relays, magnetic shields, telephone and radio transformers, precision AC and DC instruments, and current transformers (see transformers). . Adding molybdenum, manganese, cobalt, copper, chromium and other elements to iron-nickel alloys can produce ternary and quaternary iron-nickel alloys with greater initial magnetic permeability and high magnetic permeability.
Iron-nickel alloy has a narrow and steep hysteresis loop, has a large magnetic permeability and a small coercive force in a weak magnetic field, but its resistivity is not large and is only suitable for
thousands and below. Frequency range operation otherwise the eddy current loss will be too large. Iron-nickel alloy has good processing performance and can be made into various components with complex shapes and precise size requirements. However, its magnetic properties are relatively sensitive to mechanical stress. Process factors have a greater impact on the magnetic properties, such as stamping, which will reduce the product performance consistency. The cost of iron-nickel alloy is high. The properties and uses of commonly used iron-nickel alloys are listed in the table.
In addition to Invar, Kovar and Permalloy, iron-nickel alloys also include the following alloys: ++ and ++ have high thermal expansion coefficients and can be used as bimetallic heat exchangers for thermostats. and various temperature regulating devices. + is called a substitute for platinum. The expansion coefficient is the same as platinum and has good corrosion resistance. It can replace platinum in some situations. +Can be used as vacuum tube sealing wire instead of platinum. ++ is a constant elastic alloy with a thermoelastic coefficient equal to zero and is commonly used as hairpins, watch balance wheels and precision instrument parts. Molten ingots are processed into finished products by pressure.
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