Corrosion-resisting magnetically soft alloy

A soft magnetic alloy and corrosion-resistant technology, applied in the field of corrosion-resistant soft magnetic alloys and electromagnetic fuel injectors, can solve the problems of high coercivity, high price, can not meet the requirements of material selection, etc., and achieve low price and reduce coercivity. , the effect of fast response speed

Inactive Publication Date: 2016-02-03
CENT IRON & STEEL RES INST
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Problems solved by technology

Among them, the 1J36 alloy is more expensive because it contains more Ni; the coercive force of the 1J116 and 1J117 alloys is relatively high, which cannot guarantee the rapid response of the injector
Therefore, these alloys cannot meet the material selection requirements of modern electromagnetic injectors

Method used

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  • Corrosion-resisting magnetically soft alloy
  • Corrosion-resisting magnetically soft alloy
  • Corrosion-resisting magnetically soft alloy

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preparation example Construction

[0017] The preparation method of the alloy of the invention is as follows: industrial pure iron, metal chromium, electrolytic nickel, sponge titanium, polysilicon, metal molybdenum, metal aluminum, vanadium iron alloy, rare earth lanthanum and the like are used as raw materials. Vacuum induction melting or AOD (Argon Oxygen Decarburization), VOD (Vacuum Oxygen Decarburization) and other out-of-furnace refining technologies are easy to industrial scale production. For those with special requirements, electroslag remelting (ESR) and vacuum arc remelting (VAR) can also be carried out.

[0018] Among them, the alloy is smelted and poured in a vacuum induction furnace, and then forged into a Ф40mm forged rod after being kept at 1160°C. After the forged rod is heat treated, the relevant properties are tested. The heat treatment process adopted is: heat preservation at 980°C for 8 hours, cooling to 700°C at a cooling rate of 50°C / h, and then cooling to room temperature with the furna...

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Abstract

The invention belongs to the technical field of magnetically soft alloy, and relates to corrosion-resisting magnetically soft alloy. The corrosion-resisting magnetically soft alloy is especially suitable for an electromagnetic oil sprayer. The corrosion-resisting magnetically soft alloy is prepared from, by mass, 16.5% to 17.9% of Cr, 0.5% to 1.3% of Si, 0.3% to 0.5% of Al, 0.10% to 0.25% of Ti, 1.8% to 2.3% of Mo, V of 0.35% or less, La of 0.10% or less, and the balance Fe and inevitable impurities. The corrosion-resisting magnetically soft alloy has high corrosion resistance and more excellent soft magnetic properties, especially coercivity is remarkably reduced, and therefore the corrosion-resisting magnetically soft alloy is especially suitable for being applied to the electromagnetic oil sprayer requiring fast response frequency and certain corrosion environment.

Description

technical field [0001] The invention belongs to the technical field of soft magnetic alloys, and relates to a corrosion-resistant soft magnetic alloy, which is especially suitable for electromagnetic fuel injectors. Background technique [0002] As the core working part of the electronically controlled fuel injection system of a car engine, the electromagnetic injector is used to inject fuel from the fuel distribution pipe into the end of each intake manifold and form a fine mist. The fuel injection pulse signal can accurately calculate the gasoline injection quantity. Since it has been working in a corrosive medium such as high-pressure fuel oil, an explosive environment, and an alternating load under the action of an external alternating magnetic field, it is required to select manufacturing materials with excellent comprehensive performance. Soft magnetic corrosion-resistant alloys have been widely used in the field of electromagnetic injector manufacturing due to their ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/147C22C38/28
Inventor 郭世海张建福张羊换王煜祁焱赵栋梁
Owner CENT IRON & STEEL RES INST
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