CN106480365B - A kind of manufacture method of high-silicon high aluminium non-directional electrical steel - Google Patents
A kind of manufacture method of high-silicon high aluminium non-directional electrical steel Download PDFInfo
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- CN106480365B CN106480365B CN201510524687.3A CN201510524687A CN106480365B CN 106480365 B CN106480365 B CN 106480365B CN 201510524687 A CN201510524687 A CN 201510524687A CN 106480365 B CN106480365 B CN 106480365B
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Abstract
The present invention provides a kind of manufacture method of high-silicon high aluminium non-directional electrical steel, the control of sial content is 2.0~4.5% in substrate, penetration enhancer uses ferrosilicon with two kinds of powder accountings of ferro-aluminum for 80~94wt%, silicon iron powder silicone content >=15%, ferro-aluminum powder aluminium content >=5%, the mesh of penetration enhancer granularity ＞ 60；Conductive plate is copper coin, and coating thickness is in 2N/mm2It is 3mm under pressure；It is heat-treated 100~250 DEG C of charging temperature, 50~150 DEG C/h of programming rate, 650~750 DEG C, 40~60V of voltage, 2~4A of electric current of holding temperature, 1.5~3h of soaking time.The present invention is simple to operate, cost is low, technique is easily controllable, operating efficiency is high, its high-silicon high aluminium non-directional electrical steel produced band saturated pole intensity reaches 1.86T, P10/50 0.75W/kg, P0.5/1K 18.96W/kg, industrialized production can be achieved, manufactured suitable for the electromagnetic core of various high-efficiency and precision motors and electrical equipment, instrument etc..
Description
Technical field
The invention belongs to technical field of steel rolling, more particularly to a kind of high silicon containing Si3.3~6.5%, Al0.5~3.0%
The manufacture method of high alumina non-directional electrical steel.
Background technology
In electrician's steel matrix, silicone content, which reaches 6.5%, can obtain optimal combination property, but in industrial production, in theory silicon
Content, which reaches 3.3%, can not carry out cold working.Gas phase is often carried out according to demand for specific use high-silicon electrical steel material to ooze
Silicon carries out small-scale production using technologies such as amorphous rapid cooling castings, it is impossible to industrialized production is carried out, complex operation, cost is high,
Technique is not easy to control, and operating efficiency is low.
The content of the invention
The present invention is intended to provide a kind of cost is low, technique is easily controllable, and operating efficiency is high, and industrialized production can be achieved, obtain
The method for obtaining the solid powder sial co-permeation method production high-silicon high aluminium non-directional electrical steel band of the high silicon steel soft magnetic materials of high-performance.
Therefore, the solution that the present invention is taken is：
A kind of manufacture method of high-silicon high aluminium non-directional electrical steel, it is characterised in that containing Si3.3~6.5%, Al0.5
The specific manufacture method of~3.0% high-silicon high aluminium non-directional electrical steel band is：
Technological process
Substrate uncoiling → two-sided powder spray → conductive plate synchronization uncoiling covering is → smooth to press → to batch → and substrate is
Negative electrode access dc source → heat-treatment furnace heating and thermal insulation → comes out of the stove → and uncoiling separates substrate with conductive plate → substrate surface
Cleaning → stress relief annealing or coating.
Main technique and parameter
Substrate：The control of sial content is 2.0~4.5% in substrate, surface finishing, cleaning, progress chemical polishing；
Penetration enhancer：Ferrosilicon and two kinds of powder accountings of ferro-aluminum are 80~94wt%, silicon iron powder silicone content >=15%, ferro-aluminum powder
Aluminium content >=5%, the mesh of penetration enhancer granularity ＞ 60；Filler is iron powder, 2~10wt% of accounting, and adhesive is accounted for using paraffin wax, sal-ammoniac
Than being 2~10wt%, 50~200 DEG C dry；
Conductive plate：Conductive plate is copper coin, and coating thickness is in 2N/mm2It is 3mm under pressure；
Power supply：Tunable voltage dc power supply；
Heat-treatment furnace：100~250 DEG C of charging temperature, 50~150 DEG C/h of programming rate, 650~750 DEG C of holding temperature, protect
Switch on power when warm, voltage control 40~60V, 2~4A of current control, 1.5~3h of soaking time.
The present invention technical principle be：
1st, after the DC electric field for applying certain voltage between conductive plate, penetration enhancer, substrate for seep, caused activated silica, aluminium
Atom is electrically charged；Charged active silicon, aluminium atom orient to substrate surface to spread, and its diffusion velocity is obviously higher than the thermal expansion of non-directional
Speed is dissipated, and this diffusion way can also reduce conductive plate and corrode and repeat and utilize pole plate.
2nd, under DC electric field effect, electric current has the work of heating by penetration enhancer and the resistance of substrate in itself to penetration enhancer and substrate
With making sample actual temperature compared with heating-up temperature height.This physical heating effect can promote the decomposition of powder penetrating agent, increase activity
The concentration of silicon, aluminium atom.
3rd, a thermograde between the two poles of the earth of electric field and between cathode base and surrounding powder penetration enhancer be present, this will cause
An activated silica, the concentration difference of aluminium atom between electric field the two poles of the earth and negative electrode and all lock powder penetrating agents be present.It is fixed according to Fick first
Rule, the orientation infiltration rate of powder siliconising aluminising will be further increased in this concentration difference, overcome relied on merely in conventional siliconising it is non-fixed
To the deficiency of thermal diffusion.
Beneficial effects of the present invention are：
The present invention is simple to operate, and cost is low, and technique is easily controllable, and operating efficiency is high, and the high-silicon high aluminium that it is produced is directionless
Property electrical steel strip saturated pole intensity reaches 1.86T, P10/50 0.75W/kg, P0.5/1K 18.96W/kg, passes through substrate
Selection can produce non-directional high-grade electrical sheet material, realize the production of industrialized production non-directional high-silicon high aluminium electrical sheet
Product, manufactured suitable for the electromagnetic core of various high-efficiency and precision motors and electrical equipment, instrument etc..
Embodiment
Substrate chemical composition involved in the present invention is weight percent content.Technological process is：Substrate uncoiling → bis-
The covering of face powder spray → conductive plate synchronization uncoiling is → smooth to press → to batch → and substrate is that negative electrode accesses dc source → heat
Treatment furnace heating and thermal insulation → come out of the stove → uncoiling separates substrate with conductive plate → substrate surface cleaning → stress relief annealing or painting
Layer.
Embodiment 1：
Steel strip substrate chemical composition wt%：C：0.003%, Si：2.1%, Al：0.35%, Mn:0.30%, P：
0.010%, S：0.0022%, N：0.0023%, remaining is Fe and inevitable residual elements；
Substrate size：0.35mm×120mm×300mm；
The mesh of silicon iron powder granularity 100, silicone content 55%, silicon iron powder account for penetration enhancer ratio 55wt%；Ferro-aluminum powder size 80
Mesh, aluminium content 25%, ferro-aluminum powder account for penetration enhancer ratio 27wt%；The mesh of pure iron Powder Particle Size 100 accounts for 8wt%；Paraffin wax powder 7wt%；Chlorine
Change ammonia 3wt%；80 DEG C of drying are well mixed.
120 DEG C, programming rate 90/h of charging temperature, 750 DEG C of holding temperature, the dry hydrogen of protective atmosphere 100%, connect during insulation
Power supply, voltage control 60V, current control 3A, energization soaking time 1.8h.
Siliconising aluminium metacoxal plate silicone content is 3.4%, aluminium content 0.8%, is tested by 100mm × 100mm magnetic conductivities：It is full
With magnetic polarization intensity 1.93T；P10/50 is 0.94W/kg；P0.5/1K is 25.2W/kg.
Embodiment 2：
Steel strip substrate chemical composition wt%：C：0.002%, Si：3.1%, Al：0.72%, Mn:0.21%, P：
0.008%, S：0.0015%, N：0.0017%, remaining is Fe and inevitable residual elements；
Substrate size：0.35mm×120mm×300mm；
The mesh of silicon iron powder granularity 100, silicone content 75%, silicon iron powder account for penetration enhancer ratio 60wt%；Ferro-aluminum powder size 100
Mesh, aluminium content 25%, ferro-aluminum powder account for penetration enhancer ratio 30wt%；The mesh of pure iron Powder Particle Size 100 accounts for 5wt%；Paraffin wax powder 3wt%；Chlorine
Change ammonia 2wt%；150 DEG C of drying are well mixed.
150 DEG C of charging temperature, 100 DEG C/h of programming rate, 700 DEG C of holding temperature, the dry hydrogen of protective atmosphere 100%, during insulation
Switch on power, voltage controls 40V, current control 4A, insulation and conduction time 3h.
Siliconising aluminium metacoxal plate silicone content is 4.2%, aluminium content 1.7%, is tested by 100mm × 100mm magnetic conductivities：It is full
With magnetic polarization intensity 1.89T；P10/50 is 0.74W/kg；P0.5/1K is 17.2W/kg.
Embodiment 3：
Steel strip substrate chemical composition wt%：C：0.0025%, Si：3.5%, Al：1.00%, Mn:0.23%, P：
0.015%, S：0.0036%, N：0.0017%, remaining is Fe and inevitable residual elements；
Substrate size：0.35mm×120mm×300mm；
The mesh of silicon iron powder granularity 150, silicone content 60%, silicon iron powder account for penetration enhancer ratio 65wt%；Ferro-aluminum powder size 130
Mesh, aluminium content 25%, ferro-aluminum powder account for penetration enhancer ratio 24wt%；The mesh of pure iron Powder Particle Size 100 accounts for 6wt%；Paraffin wax powder 3wt%；Chlorine
Change ammonia 2wt%；190 DEG C of drying are well mixed.
200 DEG C, programming rate 120/h of charging temperature, 680 DEG C of holding temperature, the dry hydrogen of protective atmosphere 100%, connect during insulation
Energization source, voltage control 45V, current control 2A, energization soaking time 2.5h.
Siliconising aluminium metacoxal plate silicone content is 4.8%, aluminium content 1.5%, is tested by 100mm × 100mm magnetic conductivities：It is full
With magnetic polarization intensity 1.77T；P10/50 is 0.59W/kg；P0.5/1K is 14.5W/kg.
Claims (1)
- A kind of 1. manufacture method of high-silicon high aluminium non-directional electrical steel, it is characterised in that containing Si3.3~6.5%, Al0.5~ The specific manufacture method of 3.0% high-silicon high aluminium non-directional electrical steel band is：Technological processSubstrate uncoiling → two-sided powder spray → conductive plate synchronization uncoiling covering is → smooth to press → to batch → and substrate is negative electrode Access dc source → heat-treatment furnace heating and thermal insulation → comes out of the stove → and uncoiling separates substrate with conductive plate → and substrate surface clears up → stress relief annealing or coating；Main technique and parameterSubstrate：The total content of silicon and aluminium is 2.0~4.5% in substrate, surface finishing, cleaning, carries out chemical polishing；Penetration enhancer：Ferrosilicon and two kinds of powder accountings of ferro-aluminum are 80~94wt%, silicon iron powder silicone content >=15%, and ferro-aluminum Al powder contains Amount >=5%, the mesh of penetration enhancer granularity ＞ 60；Filler is iron powder, 2~10wt% of accounting, and adhesive is equal using paraffin wax, sal-ammoniac, accounting For 2~10wt%, 50~200 DEG C of drying；Conductive plate：Conductive plate is copper coin, and coating thickness is in 2N/mm2It is 3mm under pressure；Power supply：Tunable voltage dc power supply；Heat-treatment furnace：100~250 DEG C of charging temperature, 50~150 DEG C/h of programming rate, 650~750 DEG C of holding temperature, during insulation Switch on power, voltage control 40~60V, 2~4A of current control, 1.5~3h of soaking time.
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| KR102483579B1 (en) * | 2018-07-13 | 2023-01-03 | 닛폰세이테츠 가부시키가이샤 | Grain-oriented electrical steel sheet, grain-oriented silicon steel sheet used as a material for grain-oriented electrical steel sheet, method for producing grain-oriented electrical steel sheet, and grain-oriented electrical steel sheet manufacturing method |
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