Soft magnetic alloy of nickel-chromium in use for base plate of body case of magnetic head in instrument for checking paper money

A technology of soft magnetic alloys and banknote detectors, applied in the field of soft magnetic alloys, can solve the problems of low cost, high manufacturing cost, and high price of high-nickel soft magnetic alloys, and achieve good processing performance, good magnetic shielding performance and corrosion resistance sexual effect

Inactive Publication Date: 2006-02-01
GUANGDONG IRON & STEEL INST +1
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  • Abstract
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Problems solved by technology

[0003] The purpose of the present invention is to solve the defects that the high-nickel soft magnetic alloy on the bottom plate of the magnetic head shell of the existing money detector is expensive and the manufacturing cost is high, and provides a nickel-chromium soft magnetic alloy used for the bottom plate of the magnetic head shell of the money detector. The alloy is a medium nickel low chromium soft magnetic alloy, which has a certain magnetic shielding effect and corrosion resistance, and the cost is relatively low

Method used

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Examples

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Effect test

Embodiment 1

[0021] The composition and weight percentage of the soft magnetic alloy in Example 1 of the present invention are: 0.045% of aluminum, 8.06% of chromium, 0.30% of silicon, 0.38% of manganese, 0.023% of carbon, 0.045% of aluminum, 0.044% of copper, 0.015% of sulfur, and 0.012% of phosphorus %, the balance is iron.

[0022] The composition and weight percentage of the soft magnetic alloy in Example 2 of the present invention are: nickel 40.40%, chromium 8.30%, silicon 0.19%, manganese 0.50%, carbon 0.026%, aluminum 0.045%, copper 0.034%, sulfur 0.018%, phosphorus 0.015% %, the balance is iron.

[0023] The composition and weight percentage of the soft magnetic alloy of Example 3 of the present invention are: nickel 41.05%, chromium 7.95%, silicon 0.21%, manganese 0.44%, carbon 0.020%, aluminum 0.034%, copper 0.030%, sulfur 0.017%, phosphorus 0.016% %, the balance is iron.

[0024] The composition and weight percentage of the soft magnetic alloy in Example 4 of the present inve...

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Abstract

A soft-magnetic NiCr alloy used for the base plate of the casing for the magnetic head of paper money tester contains Ni (39.5-41.5 Wt %), Cr (7.80-8.80), Mn (0.3-0.6), Si (0.15-0.30) and Fe (rest). Its advantages are high magnetic shielding and anti-corrosion performance, not rusting and high machinability.

Description

Technical field [0001] The invention relates to a soft magnetic alloy, in particular to a nickel-chromium soft magnetic alloy with good contact resistance and low cost, which is used for the bottom plate of the magnetic head shell of a currency detector. Background technique [0002] The bottom plate of the magnetic head shell of the currency detector is a stamping part of the magnetic head of the currency detector, which needs to have certain corrosion resistance and better magnetic shielding effect. At present, high-nickel soft magnetic alloys are commonly used as bottom plate materials, such as 1J79, 1J85 and other high-permeability soft-magnetic alloys, which have high initial permeability, low coercive force, good working shielding effect, and good corrosion resistance. and deep drawing performance. However, such alloys contain a lot of nickel and molybdenum, which are expensive and costly to use. In order to reduce costs, there are attempts to use medium-nickel soft ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/40
Inventor 刘志坚陈远星黎杰文刘宇华
Owner GUANGDONG IRON & STEEL INST
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