CN104308159A - Magnetic material and manufacturing method - Google Patents

Abstract

The invention relates to a magnetic material and a manufacturing method. The magnetic material comprises, by weight, 42.3-42.5% of manganese, 6.4-6.5% of zinc, 0.01-0.03% of titanium, 0.03-0.05% of molybdenum, 0.15-0.25% of copper, 0.2-0.35% of niobium, 0.01-0.03% of samarium, 0.12-0.20% of vanadium, 0.01-0.02% of calcium, 0.15-0.2% of cobalt and balance of iron. By the technical scheme, Curie temperature of manufactured magnets exceeds 280 DEG C, and compared with the prior art, the magnetic material is much lower in power consumption.

Description

A kind of magnetic material and preparation method

Technical field

The invention belongs to field of magnetic material, refer to a kind of magnetic material and preparation method of automobile magnetic core especially.

Background technology

The requirement of automobile magnetic core to magnetic material is stricter, require that magnetic material must have high Curie temperature, at least more than 280 DEG C, under 100 DEG C and above temperature conditions, the anti-saturation had, anti-DC stacked ability, and the power attenuation of magnetic material is low.

Existing common magnetic material all can not meet the above-mentioned requirements of automobile magnetic core, and can ensure the selling at exorbitant prices of the magnetic material of above-mentioned requirements.

Summary of the invention

The object of this invention is to provide the magnetic material of a kind of high-curie temperature and saturation induction density, on the other hand there is low power attenuation.

The present invention is achieved by the following technical solutions:

A kind of magnetic material, its composition is by weight percentage, the vanadium of the titanium of the manganese of 42.3-42.5%, the zinc of 6.4-6.5%, 0.01-0.03%, the molybdenum of 0.03-0.05%, 0.12-0.20%, 0.01-0.02% calcium, the copper of 0.15-0.25%, the niobium of 0.2-0.35%, the samarium of 0.01-0.03%, the cobalt of 0.15-0.2%, surplus is iron.

Described iron, manganese, zinc, titanium, molybdenum, vanadium, calcium, copper, niobium, samarium and cobalt are prepared in the mode of di-iron trioxide, mangano-manganic oxide, zinc oxide, titanium dioxide, molybdenum trioxide, calcium oxide, vanadium oxide, cupric oxide, columbium sesquioxide, cobalt sesquioxide, samarium sesquioxide respectively.

Described preparation method is:

Batching, become and be by weight percentage, the vanadium of the titanium of the manganese of 42.3-42.5%, the zinc of 6.4-6.5%, 0.01-0.03%, the molybdenum of 0.03-0.05%, 0.12-0.20%, 0.01-0.02% calcium, the copper of 0.15-0.25%, the niobium of 0.2-0.35%, the samarium of 0.01-0.03%, the cobalt of 0.15-0.2%, surplus is that iron is got the raw materials ready; Wherein, iron, manganese, zinc, titanium, molybdenum, vanadium, calcium, copper, niobium, samarium and cobalt are got the raw materials ready in the mode of di-iron trioxide, mangano-manganic oxide, zinc oxide, titanium dioxide, molybdenum trioxide, vanadium oxide, calcium oxide, cupric oxide, columbium sesquioxide, cobalt sesquioxide, samarium sesquioxide respectively;

Mixing, above-mentioned each composition is made the powder that average grain diameter is 10-20 micron, then in batch mixer batch mixing 30-60 minute;

Compacting, suppresses 10-60 and becomes base substrate under 750-900MPa second;

Fire, at 750-800 DEG C of pre-burning 1-2 hour, then the hot 250-300MPa that pressurizes in mould of band carries out shaping compacting, be beneficial to the density improving magnet, 2-4 hour is fired again at 1250-1350 DEG C, to be not less than the cooling velocity fast cooling of 15 DEG C/sec to 700-750, then be warming up to 1100-1200 DEG C; Pass into water vapour when being then at the uniform velocity cooled to 650-700 and carry out surface treatment, be cooled to room temperature.

The present invention's beneficial effect is compared with the existing technology:

By the technical program, by the fast cooling of base substrate and secondary temperature elevation, the crystal structure in base substrate is compared with once firing, occur significantly to change, the arrangement regulation of crystal is more smooth.The Curie temperature of obtained magnet is more than 280 DEG C, and its power attenuation is compared with the existing technology low many.

Detailed description of the invention

Describe technical scheme of the present invention in detail by the following examples, should be understood that, following embodiment only can be used for explaining the present invention and can not being interpreted as being limitation of the present invention.

A kind of magnetic material preparation method is:

Batching, become and be by weight percentage, the vanadium of the titanium of the manganese of 42.3-42.5%, the zinc of 6.4-6.5%, 0.01-0.03%, the molybdenum of 0.03-0.05%, 0.12-0.20%, 0.01-0.02% calcium, the copper of 0.15-0.25%, the niobium of 0.2-0.35%, the samarium of 0.01-0.03%, the cobalt of 0.15-0.2%, surplus is that iron is got the raw materials ready; Wherein, iron, manganese, zinc, titanium, molybdenum, vanadium, calcium, copper, niobium, samarium and cobalt are got the raw materials ready in the mode of the vanadium of di-iron trioxide, mangano-manganic oxide, zinc oxide, titanium dioxide, molybdenum trioxide, 0.12-0.20%, 0.01-0.02% calcium, cupric oxide, columbium sesquioxide, cobalt sesquioxide, samarium sesquioxide respectively;

Mixing, above-mentioned each composition is made the powder that average grain diameter is 10-20 micron, then in batch mixer batch mixing 30-60 minute;

Compacting, suppresses 10-60 and becomes base substrate under 750-900MPa second;

Fire, at 750-800 DEG C of pre-burning 1-2 hour, then the hot 250-300MPa that pressurizes in mould of band carries out shaping compacting, be beneficial to the density improving magnet, 2-4 hour is fired again at 1250-1350 DEG C, to be not less than the cooling velocity fast cooling of 15 DEG C/sec to 700-750, then be warming up to 1100-1200 DEG C; Pass into water vapour when being then at the uniform velocity cooled to 650-700 and carry out surface treatment, be cooled to room temperature.In the present invention, the technical scheme in later stage is identical with prior art, does not therefore just carry out repeat specification.In the present invention, the change of each embodiment is little, distinguishes the maximum proportioning for magnetic material.

Embodiment 1

Described preparation method is:

Batching, one-tenth is by weight percentage, the manganese of 42.3%, the zinc of 6.4%, the titanium of 0.01%, molybdenum, the vanadium of 0.12, calcium, the copper of 0.15%, niobium, the samarium of 0.01%, the cobalt of 0.15% of 0.2% of 0.01% of 0.03%, and surplus is that iron is got the raw materials ready; Wherein, iron, manganese, zinc, titanium, molybdenum, calcium, vanadium, copper, niobium, samarium and cobalt are got the raw materials ready in the mode of di-iron trioxide, mangano-manganic oxide, zinc oxide, titanium dioxide, molybdenum trioxide, cupric oxide, columbium sesquioxide, cobalt sesquioxide, samarium sesquioxide respectively;

Mixing, makes above-mentioned each composition the powder that average grain diameter is 10-20 micron, also can directly obtain the powder of above-mentioned particle diameter by buying herein, then in batch mixer batch mixing 30 minutes; Compacting, suppresses and becomes base substrate in 25 seconds under 800MPa;

Fire, at 750-800 DEG C of pre-burning 1-2 hour, then the hot 250-300MPa that pressurizes in mould of band carries out shaping compacting, be beneficial to the density improving magnet, 2-4 hour is fired again at 1250-1350 DEG C, to be not less than the cooling velocity fast cooling of 15 DEG C/sec to 700-750, then be warming up to 1100-1200 DEG C; Pass into water vapour when being then at the uniform velocity cooled to 650-700 and carry out surface treatment, be cooled to room temperature.

Embodiment 2

Described preparation method is:

Batching, one-tenth is by weight percentage, the manganese of 42.5%, the zinc of 6.5%, the titanium of 0.03%, molybdenum, the vanadium of 0.20%, calcium, the copper of 0.25%, niobium, the samarium of 0.03%, the cobalt of 0.2% of 0.35% of 0.02% of 0.05%, and surplus is that iron is got the raw materials ready; Wherein, iron, manganese, zinc, titanium, molybdenum, copper, niobium, samarium and cobalt are got the raw materials ready in the mode of di-iron trioxide, mangano-manganic oxide, zinc oxide, titanium dioxide, molybdenum trioxide, calcium oxide, vanadium oxide, cupric oxide, columbium sesquioxide, cobalt sesquioxide, samarium sesquioxide respectively;

Mixing, makes above-mentioned each composition the powder that average grain diameter is 10-20 micron, also can directly obtain the powder of above-mentioned particle diameter by buying herein, then in batch mixer batch mixing 60 minutes;

Compacting, suppresses and becomes base substrate in 30 seconds under 800MPa;

Fire, at 750-800 DEG C of pre-burning 1-2 hour, then the hot 250-300MPa that pressurizes in mould of band carries out shaping compacting, be beneficial to the density improving magnet, 2-4 hour is fired again at 1250-1350 DEG C, to be not less than the cooling velocity fast cooling of 15 DEG C/sec to 700-750, then be warming up to 1100-1200 DEG C; Pass into water vapour when being then at the uniform velocity cooled to 650-700 and carry out surface treatment, be cooled to room temperature.

Embodiment 3

Described preparation method is:

Batching, become and be by weight percentage, the manganese of 42.4%, the zinc of 6.45%, the titanium of 0.025%, molybdenum, the vanadium of 0.15%, calcium, the copper of 0.2%, niobium, the samarium of 0.02%, the cobalt of 0.17% of 0.3% of 0.015% of 0.035%, surplus is that iron is got the raw materials ready; Wherein, iron, manganese, zinc, titanium, molybdenum, vanadium, calcium, copper, niobium, samarium and cobalt are got the raw materials ready in the mode of di-iron trioxide, mangano-manganic oxide, zinc oxide, titanium dioxide, molybdenum trioxide, calcium oxide, vanadium oxide, cupric oxide, columbium sesquioxide, cobalt sesquioxide, samarium sesquioxide respectively;

Mixing, makes above-mentioned each composition the powder that average grain diameter is 10-20 micron, also can directly obtain the powder of above-mentioned particle diameter by buying herein, then in batch mixer batch mixing 45 minutes;

Compacting, suppresses and becomes base substrate in 45 seconds under 750MPa;

Fire, at 750-800 DEG C of pre-burning 1-2 hour, then the hot 250-300MPa that pressurizes in mould of band carries out shaping compacting, be beneficial to the density improving magnet, 2-4 hour is fired again at 1250-1350 DEG C, to be not less than the cooling velocity fast cooling of 15 DEG C/sec to 700-750, then be warming up to 1100-1200 DEG C; Pass into water vapour when being then at the uniform velocity cooled to 650-700 and carry out surface treatment, be cooled to room temperature.

Claims (3)

1. a magnetic material, it is characterized in that: its composition is by weight percentage, the vanadium of the titanium of the manganese of 42.3-42.5%, the zinc of 6.4-6.5%, 0.01-0.03%, the molybdenum of 0.03-0.05%, 0.12-0.20%, 0.01-0.02% calcium, the copper of 0.15-0.25%, the niobium of 0.2-0.35%, the samarium of 0.01-0.03%, the cobalt of 0.15-0.2%, surplus is iron.

2. magnetic material according to claim 1, is characterized in that: described iron, manganese, zinc, titanium, molybdenum, vanadium, calcium, copper, niobium, samarium and cobalt are prepared in the mode of di-iron trioxide, mangano-manganic oxide, zinc oxide, titanium dioxide, molybdenum trioxide, calcium oxide, vanadium oxide, cupric oxide, columbium sesquioxide, cobalt sesquioxide, samarium sesquioxide respectively.

3. a magnetic material preparation method, is characterized in that:

Batching, become and be by weight percentage, the vanadium of the titanium of the manganese of 42.3-42.5%, the zinc of 6.4-6.5%, 0.01-0.03%, the molybdenum of 0.03-0.05%, 0.12-0.20%, 0.01-0.02% calcium, the copper of 0.15-0.25%, the niobium of 0.2-0.35%, the samarium of 0.01-0.03%, the cobalt of 0.15-0.2%, surplus is that iron is got the raw materials ready; Wherein, iron, manganese, zinc, titanium, molybdenum, vanadium, calcium, copper, niobium, samarium and cobalt are got the raw materials ready in the mode of di-iron trioxide, mangano-manganic oxide, zinc oxide, titanium dioxide, molybdenum trioxide, cupric oxide, calcium oxide, vanadium oxide, columbium sesquioxide, cobalt sesquioxide, samarium sesquioxide respectively;

Mixing, above-mentioned each composition is made the powder that average grain diameter is 10-20 micron, then in batch mixer batch mixing 30-60 minute;

Compacting, suppresses 10-60 and becomes base substrate under 750-900MPa second;

Fire, at 750-800 DEG C of pre-burning 1-2 hour, then the hot 250-300MPa that pressurizes in mould of band carries out shaping compacting, be beneficial to the density improving magnet, 2-4 hour is fired again at 1250-1350 DEG C, to be not less than the cooling velocity fast cooling of 15 DEG C/sec to 700-750, then be warming up to 1100-1200 DEG C; Pass into water vapour when being then at the uniform velocity cooled to 650-700 and carry out surface treatment, be cooled to room temperature.