CN105304258A - Corrosion-resisting magnetically soft alloy - Google Patents
Corrosion-resisting magnetically soft alloy Download PDFInfo
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- CN105304258A CN105304258A CN201510882513.4A CN201510882513A CN105304258A CN 105304258 A CN105304258 A CN 105304258A CN 201510882513 A CN201510882513 A CN 201510882513A CN 105304258 A CN105304258 A CN 105304258A
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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
The invention belongs to magnetically soft alloy technical field, relate to a kind of corrosion-resistant magnetically soft alloy, be specially adapted to electromagnetic fuel injector.
Background technology
Electromagnetic fuel injector is as the core work parts of motorcar engine electric control fuel oil jet system, its effect is that fuel oil is sprayed into each inlet manifold end from fuel dispensing tube, and being formed well vaporific, it accepts the fuel injection pulse signal that ECU (Electrical Control Unit) sends, and accurately calculates gasoline injection amount.Due to always the Korrosionsmediums such as high pressure fuel, explosive atmosphere and under additional action of alternating magnetic field, bear alternate load operational environment under work, require to select the manufacture material of high comprehensive performance.Soft magnetism corrosion resistant alloy, owing to having good mechanical property, decay resistance and electromagnetic performance, is widely used in electromagnetic fuel injector manufacture field.
In recent years, along with improving constantly of the efficiency of Modern Automobile Engine, power and rotating speed, electromagnetic fuel injector will meet that opening pressure is high, fast response time, flow are large, safe and reliable and the feature of good airproof performance, just ensureing to improve electromagnetic performance while the corrosion resisting property of soft magnetism corrosion resistant alloy does not reduce, low-alloyed coercive force must particularly fall.The coercive force of material is less, magnetization and demagnetization easier, fuel injector can respond quickly external magnetic field changes, reach the object accurately controlling and raise the efficiency.
At present, the national standard about anticorrosion soft mag only has a GB/T14986-2008, comprises three anticorrosion soft mag trades mark: 1J36,1J116,1J117.Wherein, 1J36 alloy is due to containing more Ni, and therefore price is higher; The coercive force of 1J116 and 1J117 alloy is higher, can not ensure the quick response action of fuel injector.Therefore, these alloys can not meet the choice requirement of modern electromagnetic fuel injector.
Summary of the invention
The object of the present invention is to provide a kind of corrosion-resistant magnetically soft alloy, make alloy under the condition not reducing corrosion resisting property, coercive force reduces greatly, improves the response speed of fuel injector when being applied to electromagnetic fuel injector.
To achieve these goals, the invention provides following technical scheme:
The invention provides a kind of corrosion-resistant magnetically soft alloy, the chemical composition of this magnetically soft alloy is by mass percentage: Cr content is 16.5 ~ 17.9%, Si content is 0.5 ~ 1.3%, Al content is 0.3 ~ 0.5%, Ti content is 0.10 ~ 0.25%, Mo content is that 1.8 ~ 2.3%, V content is not more than 0.35%, La content is not more than 0.10%, and surplus is Fe and inevitable impurity.
In described impurity, C content is not more than 0.025%, and N content is not more than 0.015%, S content and is not more than 0.015%, O content and is not more than 0.01%, P content and is not more than 0.01%.
Preferably, Cr content is 16.6 ~ 17.8%, Si content, and be 0.8 ~ 1.2%, Al content be 0.38 ~ 0.45%, Ti content to be 0.13 ~ 0.22%, Mo content be that 2.0 ~ 2.1%, V content is not more than 0.32%, La content is not more than 0.05%.
Preferably, in described impurity, C content is not more than 0.016%, S content and is not more than 0.011%.
Described magnetically soft alloy has following electromagnetic performance: magnetic induction density B
800be 1.12 ~ 1.15T, B
3200be 1.35 ~ 1.41T; Coercive force is 29 ~ 35A/m.
The application of described magnetically soft alloy in the electromagnetic fuel injector needing quick response frequency.
Compared with prior art, beneficial effect of the present invention is:
The present invention, by optimizing the chemical composition of anticorrosion soft mag, ensureing to improve electromagnetic performance while the corrosion resisting property of soft magnetism corrosion resistant alloy does not reduce, particularly falling low-alloyed coercive force, making alloy have response speed faster when being applied to electromagnetic fuel injector.In addition, due to not containing scarcity metals Ni, so price is more cheap; Owing to more not meeting the development trend of environmental protection containing poisonous and harmful substances such as Pb.
Embodiment
A kind of corrosion-resistant magnetically soft alloy of the present invention, the chemical composition of this alloy is by mass percentage: Cr content is 16.5 ~ 17.9%, Si content is 0.5 ~ 1.3%, Al content is 0.3 ~ 0.5%, Ti content is 0.10 ~ 0.25%, Mo content is that 1.8 ~ 2.3%, V content is not more than 0.35%, La content is not more than 0.10%, and surplus is Fe and inevitable impurity.
In impurity, C content is not more than 0.025%, and N content is not more than 0.015%, S content and is not more than 0.015%, O content and is not more than 0.01%, P content and is not more than 0.01%.
The preparation method of alloy of the present invention is: raw material use Armco iron, crome metal, electrolytic nickel, titanium sponge, polysilicon, metal molybdenum, metallic aluminium, vanadium iron, Rare Earth Lanthanum etc.Adopt vacuum induction melting or adopt the furnace outer refining technologies such as AOD (argon-oxygen-decarburizing process), VOD (vacuum oxygen decarburization process), being easy to industrial-scale production.To there being particular/special requirement person, electroslag remelting (ESR) and vacuum arc remelting (VAR) also can be carried out.
Wherein, alloy melting after cast, through 1160 DEG C of insulations, be forged into Ф 40mm and forge excellent in vaccum sensitive stove.Forging rod after heat treatment tests correlated performance, and the Technology for Heating Processing adopted is: 980 DEG C are incubated 8 hours, are cooled to 700 DEG C, then come out of the stove with stove cool to room temperature, H with the cooling rate of 50 DEG C/h
2protection.
Below in conjunction with embodiment, the present invention is further described.
The embodiment 1-3 of anticorrosion soft mag of the present invention and the chemical composition composition of comparative example are in table 1.
The chemical composition composition of table 1 embodiment 1-3 and comparative example
Wherein, the N content of above-mentioned alloy is not more than 0.015%, O content and is not more than 0.01%, P content and is not more than 0.01%.
Carry out electromagnetic performance and corrosion resistance test to the alloy of above-mentioned preparation, test result is as shown in table 2.
The electromagnetic performance of table 2 embodiment 1-3 and comparative example and corrosion resistance
Test result shows, anticorrosion soft mag of the present invention not only has higher corrosion resistance, and there is more excellent soft magnet performance, particularly coercive force significantly reduces, under the same conditions, the coercive force of alloy is lower, and the magnetic lag of alloy is less, the response speed of alloy in magnetic field is just fast, is therefore specially adapted to require to have the application of the electromagnetic fuel injector under quick response frequency and certain corrosive environment.
Claims (6)
1. a corrosion-resistant magnetically soft alloy, it is characterized in that: the chemical composition of this magnetically soft alloy is by mass percentage: Cr content is 16.5 ~ 17.9%, Si content is 0.5 ~ 1.3%, Al content is 0.3 ~ 0.5%, Ti content is 0.10 ~ 0.25%, Mo content is that 1.8 ~ 2.3%, V content is not more than 0.35%, La content is not more than 0.10%, and surplus is Fe and inevitable impurity.
2. corrosion-resistant magnetically soft alloy according to claim 1, is characterized in that: in described impurity, C content is not more than 0.025%, and N content is not more than 0.015%, S content and is not more than 0.015%, O content and is not more than 0.01%, P content and is not more than 0.01%.
3. corrosion-resistant magnetically soft alloy according to claim 1, it is characterized in that: Cr content is 16.6 ~ 17.8%, Si content is 0.8 ~ 1.2%, Al content is 0.38 ~ 0.45%, Ti content is 0.13 ~ 0.22%, Mo content is that 2.0 ~ 2.1%, V content is not more than 0.32%, La content and is not more than 0.05%.
4. corrosion-resistant magnetically soft alloy according to claim 1, it is characterized in that: in described impurity, C content is not more than 0.016%, S content and is not more than 0.011%.
5. corrosion-resistant magnetically soft alloy according to claim 1, is characterized in that: described magnetically soft alloy has following electromagnetic performance: magnetic induction density B
800be 1.12 ~ 1.15T, B
3200be 1.35 ~ 1.41T; Coercive force is 29 ~ 35A/m.
6. the purposes of corrosion-resistant magnetically soft alloy according to claim 1, is characterized in that: the application of described magnetically soft alloy in the electromagnetic fuel injector of the quick response frequency of needs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510882513.4A CN105304258A (en) | 2015-12-03 | 2015-12-03 | Corrosion-resisting magnetically soft alloy |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510882513.4A CN105304258A (en) | 2015-12-03 | 2015-12-03 | Corrosion-resisting magnetically soft alloy |
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| CN201510882513.4A Pending CN105304258A (en) | 2015-12-03 | 2015-12-03 | Corrosion-resisting magnetically soft alloy |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06172933A (en) * | 1992-12-07 | 1994-06-21 | Nisshin Steel Co Ltd | Al-containing ferritic stainless steel excellent in producibility and high-temperature oxidation resistance |
| CN1491290A (en) * | 2001-12-06 | 2004-04-21 | �ձ�������ʽ���� | Ferritic stainless steel sheet excellent in press formability and workability and method for production thereof |
-
2015
- 2015-12-03 CN CN201510882513.4A patent/CN105304258A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06172933A (en) * | 1992-12-07 | 1994-06-21 | Nisshin Steel Co Ltd | Al-containing ferritic stainless steel excellent in producibility and high-temperature oxidation resistance |
| CN1491290A (en) * | 2001-12-06 | 2004-04-21 | �ձ�������ʽ���� | Ferritic stainless steel sheet excellent in press formability and workability and method for production thereof |
Non-Patent Citations (3)
| Title |
|---|
| 李丽坤: "La对17wt%Cr 铁素体不锈钢组织和性能的影响", 《热加工工艺》 * |
| 赵宇等: "钼对耐蚀软磁合金抗蚀性及磁性能的影响", 《钢铁研究学报》 * |
| 黄海娥: "铁素体不锈钢磁性能的研究", 《万方数据》 * |
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Application publication date: 20160203 |
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