CN1700366A - Soft-magnetic composite material for magnetic conduction component and process for preparing magnetic conduction component - Google Patents
Soft-magnetic composite material for magnetic conduction component and process for preparing magnetic conduction component Download PDFInfo
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- CN1700366A CN1700366A CN 200510031612 CN200510031612A CN1700366A CN 1700366 A CN1700366 A CN 1700366A CN 200510031612 CN200510031612 CN 200510031612 CN 200510031612 A CN200510031612 A CN 200510031612A CN 1700366 A CN1700366 A CN 1700366A
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Abstract
This invention relates to soft magnetic compound materials used in motor magnetic parts, which is characterized by the following: the iron materials and magnetic medium are mixed to get the iron element in the parts with the weight percentage of 85-99.5%, magnetic element of 0.5-15%; the said iron materials and magnetic medium weight percentages are 85<=xa1+ya2<=99. 5; 0.5<=xb1+yb2<=15. The said iron material of iron material and the magnetic materials are the powder alloy to increase the magnetic property.
Description
Technical field:
The present invention relates to a kind of soft-magnetic composite material, be specifically related to constitute in a kind of electrical equipment and electrical the soft-magnetic composite material of conducting magnetic component and make the production technology of conducting magnetic component by it.
Background technology:
Along with the development of society, has motor, the electrical equipment of conducting magnetic component, extensive use in daily life.At present, the conducting magnetic component material in these electrical equipment mostly is silicon steel sheet, is used for medium and low frequency transformer and electric machine iron core in a large number, especially Industrial Frequency Transformer.The characteristics of silicon steel are to have saturation induction density (more than the 2.0T) the highest in the soft magnetic material commonly used, can be at very high working point work (as work magnetic strength value 1.5T) when therefore using as transformer core.But silicon steel iron loss in soft magnetic material commonly used also is maximum, generates heat too greatly because of loss in order to prevent iron core, and its frequency of utilization is not high, generally can only be operated in below the 20KHz.Silicon steel generally adopts flaky texture, and its production craft step is:
1) with silicon steel punched chip;
2) silicon steel sheet is assembled into required magnetic dentation;
3) silicon steel sheet is carried out the insulating barrier nursing, on the magnetic tooth, conducting magnetic component can produce magnetic field when copper cash is switched on copper cash.
But said method has apparent in view weakness, i.e. the direct cost height of Sheng Chaning, and reason is:
1), because the out-of-shape of various members, the utilization rate of material is lower, the waste material of being produced is more;
2), silicon steel sheet costs an arm and a leg;
3), waste material is difficult for reclaiming.
Application for a patent for invention (the application number: 03128171.0 that Patent Office of the People's Republic of China discloses a kind of " with the electrical equipment and electrical of soft-magnetic composite material manufacturing ", publication number CN 1461089A), in the disclosed technical information of the disclosure specification, conducting magnetic component is made of straight iron powder, insulating compound and lubricant, its primary raw material only is a straight iron powder, the material choice narrow range, and price is very expensive, market price is at present up to more than 7000 yuan/ton, cost is higher, and the corresponding production cost of motor, electrical equipment of raw material manufacturing is also very high thereupon thus.Simultaneously, straight iron powder is 80%-90% at the contained proportion of soft magnetic material, because content tool in soft magnetic material of ferro element plays a very important role, when iron content is lower than 85%, its magnetic saturation rate can not satisfy the performance requirement of conducting magnetic component far away, directly influenced the magnetic property of conducting magnetic component, magnetic permeability is also lower, is difficult to adapt to the product quality demand and the market demand that improve constantly at present.In addition, during its conducting magnetic component product shaping, mixture " need in 1100-1300 ℃ heating furnace sintering 2-3 hour " just can reach its designing requirement, therefore, add and must could realize by the higher high-temperature heater of an equipment requirements man-hour, can be very big and be heated to the energy cost that such high temperature needs.Because insulating compound, lubricant content are than great in the conducting magnetic component, dimensional contraction is quite severe during general the shaping, and under this high-temperature technology environmental condition, insulating compound, physical change that lubricant produces and chemical change are bigger, its result can bring variation bigger on the magnetic property of conducting magnetic component and the mechanical property and the distortion of physical dimension when being shaped, and influences crudy.Simultaneously,, can not be gasified fully when above-mentioned substance is heated to high temperature in sintering process, still have part and residue in the conducting magnetic component, be influenced the performance of product because insulating compound, lubricant content are big.In addition, above-mentioned substance behind chemical change, also can residually have other not gasified or the compound of dissolving in sintering furnace, often need clear up, both bothered, expend man-hour again.
Summary of the invention:
Technical problem to be solved by this invention is, overcome existing many defectives in the above-mentioned prior art, provide a kind of and can guarantee the higher magnetic property of conducting magnetic component, mechanical property and forming accuracy, can reach the soft-magnetic composite material of the purpose that reduces production costs again and make the production technology of conducting magnetic component by it.
The present invention is proposed technical scheme and is by solving the problems of the technologies described above:
A kind of soft-magnetic composite material that is used for magnetic conduction component of electric motor is characterized in that: mixed by iron-bearing material and magnetic conductive media, the iron content element ratio is in the conducting magnetic component that obtains thus: 85%-99.5%, and the ratio of magnetic conduction element is 0.5%-15%;
Described iron-bearing material weight proportion X and magnetic conductive media weight proportion Y in soft-magnetic composite material in soft-magnetic composite material are:
85≤xa
1+ya
2≤99.5
0.5≤xb
1+yb
2≤15
Wherein: a
1Be the iron content percentage in the iron-bearing material; a
2Be magnetic conduction constituent content percentage in the iron-bearing material;
b
1Be iron content percentage in the magnetic conductive media; b
2Be magnetic conduction constituent content percentage in the magnetic conductive media;
Described iron-bearing material comprises reduced iron powder, atomized iron powder, carbonyl iron particles and iron alloy powder;
Described magnetic conductive media is for containing silicon, aluminium, nickel, phosphorus, cobalt, copper, molybdenum or other can increase the powdery alloy material of conducting magnetic component magnetic property;
Described powdery iron-containing material and magnetic conductive media distribution of particles are the 20-500 order.
A kind of production technology by soft-magnetic composite material manufacturing conducting magnetic component is characterized in that comprising the steps:
One, mixes: iron-bearing material, magnetic conductive media are adopted the dryness mode by weight ratio or add the moist even mixing of an amount of solvent;
Two, be shaped: said mixture is made required form;
Three, solidify: the conducting magnetic component demoulding after will being shaped, adopt sintering processing to solidify then;
Four, antirust or finishing is handled;
Described forming technology adopts single shaft to be shaped or cold isostatic compaction to rigid die press forming, metal injection moulding, power forging shaping, warm-pressing formation, high temperature insostatic pressing (HIP);
Described sintering curing technology is: the conducting magnetic component after the demoulding is placed in the heating furnace heat, its temperature is 800 ℃-1100 ℃, and the time is 20-60 minute.
The present invention's material main component iron-bearing material source is wide, big with respect to the straight iron powder selectable range, cost is more much lower than straight iron powder, can adapt to the needs that difference requires conducting magnetic component, wherein the price of reduced iron powder is 2/5ths of a straight iron powder price only, and direct production cost is reduced greatly.Contain ferro element shared weight ratio in its member and be higher than more than 85%, reach as high as 99.5%, guaranteed that effectively conducting magnetic component has enough magnetic saturation rates, has improved the magnetic property and the mechanical property of member.The magnetic conduction Jie element that is contained in the material of the present invention can further improve and guarantee the permeability of conducting magnetic component, and minimally has reduced the conducting magnetic component eddy current, has guaranteed the reliability of conducting magnetic component work, has increased the soft magnetic material quality.
Powder particle of the present invention is classification and distributes, and can guarantee density and uniformity after mixture is suppressed, increases the surface smoothness of member, has improved the crudy of conducting magnetic component.
In the product shaping process of the present invention, its high temperature sintering maximum temperature is 1100 ℃, and sintering time is short, compared with the prior art, has saved the energy, reduced production cost, both solved the technological problems of the aspects such as uniformity in the pressing process, and avoided the defective workmanship that long hot setting brings and cause change on the performance of member, and can make conducting magnetic component reach required magnetic property again, can make it have very high mechanical strength, mechanical property improves.Therefore, the present invention can satisfy the different requirements of various electrical equipment and electricals to conducting magnetic component.
The conducting magnetic component of product provided by the present invention and technology manufacturing gets final product the defeated and dispersed fragment that becomes under big pressure, be easy to soft-magnetic composite material is separated with copper cash with magnetic separtor, waste material reclaims easily, can not cause any social effects of pollution, can accomplish real environmental protection.
Through overtesting, aspects such as the magnetic property of the conducting magnetic component that the present invention makes, magnetic saturation rate, insulation effect, intensity are approaching with the motor index of silicon steel sheet production, meet of the requirement of different motors fully to magnetic conductance magnetic member, but 50% of the motor cost that cost of the present invention only is former silicon steel sheet to be produced, market prospects are very wide.
Embodiment:
In field of magnetic material, the core material requirement has high saturation flux density, low coercive force, high permeability and zero magnetostriction.Therefore, constitute the composition of magnetic raw material, the corresponding proportioning between each composition, make the goods that are fit to purposes, improve magnetic property and its mechanical property of conducting magnetic component, develop new magnetic material and carry out basic research, seek new application and impel its development to become this area research personnel's important topic at present.
The invention provides a kind of soft-magnetic composite material that is used to make conducting magnetic component, it is characterized in that: this composite material is mixed by iron-bearing material and magnetic conductive media, the ferro element ratio is in the conducting magnetic component that obtains thus: 85%-99.5%, the ratio of magnetic conduction element is 0.5%-15%.Selecting for use of said ratio is to variant factors such as performance requirement, cost of material, processing technology cost and the machining accuracy consideration of conducting magnetic component and the result of repetition test according to existing market.
Iron-bearing material of the present invention contained weight proportion X and magnetic conductive media weight proportion Y in soft-magnetic composite material in soft-magnetic composite material can be obtained by following expression formula:
85≤xa
1+ya
2≤99.5
0.5≤xb
1+yb
2≤15
Wherein: a
1Be the iron content percentage in the iron-bearing material, a
2Be magnetic conduction constituent content percentage in the iron-bearing material;
b
1Be iron content percentage in the magnetic conductive media, b
2Be magnetic conduction constituent content percentage in the magnetic conductive media.
Iron content percentage in the above-mentioned iron-bearing material, magnetic conduction constituent content percentage be iron content percentage, magnetic conduction constituent content percentage existing clear and definite fixed value when selecting a certain types of material in the magnetic conductive media when.Usually, when contain in the iron-bearing material have the magnetic conduction constituent content less than 0.1%, in the magnetic conductive media iron content less than 90% the time, the shared total weight proportioning of iron-bearing material is about 85%-99.6%, the shared total weight proportioning of magnetic conductive media is about 0.4%-15%, the too high meeting of the contained ratio of magnetic conductive media causes the reduction of iron content, influence the mechanical property of conducting magnetic component, can bring the increase of cost simultaneously.
Iron-bearing material is as the base-material of soft magnetic material, it is the topmost raw material that constitutes conducting magnetic component, can adopt powdered metallurgical material with broad development prospect, its source is wide, it is simple to be processed into the Processes and apparatus that member adopts, cost is low, function admirable, have characteristics such as high-purity, low impurity, high conformity, compressibility and good moldability, iron-bearing material of the present invention is the proportioning height in its total weight, containing iron content is 85%-99.5%, organically combines by the magnetic conduction element with certain content, can reach needed magnetic property of conducting magnetic component and mechanical strength.
Described powdery iron-containing raw material can comprise reduced iron powder, atomized iron powder, carbonyl iron particles or ferroalloy, and wherein reduced iron powder can adopt reduced iron powder and secondary reduction iron powder.
Reduced iron powder, atomized iron powder, carbonyl iron particles are high-purity, high-grade iron-based material, and be cheap, the iron-holder height, and saturation induction density very low (0.5T is following), permeability is higher, and resistivity is very high, therefore is very beneficial for reducing eddy current loss.
Contain elements such as silicon, aluminium, phosphorus, nickel, copper, molybdenum in the iron alloy powder, both can increase the intensity and the hardness of material, improve its mechanical property, can increase the permeability of conducting magnetic component again, especially the ferroalloy that contains silicon, aluminium, copper, low price can be extensive use of in conducting magnetic component.
Because iron-based material coercive force is little, magnetize easily and demagnetize, but has very high permeability, can play the effect of the good gathering magnetic line of force, therefore, the present invention suitably is aided with the magnetic conductive media that magnetic property is strong, have higher permeability and low iron loss factor in its iron-bearing material, can further improve the permeability and the resistivity of soft magnetic material, reduces iron loss, improve magnetic property, increase the soft magnetic material quality.
Described magnetic conductive media can be and contains silicon, aluminium, nickel, phosphorus, cobalt, copper, molybdenum or other can increase the powdery alloy material of conducting magnetic component magnetic property, wherein is preferably and contains silicon, aluminium, phosphorus, copper class dusty material, and is cheap, can reduce production costs.
The soft magnetic material that adopts above-mentioned raw materials to constitute can obtain very high magnetic flux density, permeability and resistivity, and its mechanical property is better, can satisfy the member requirement that some is had relatively high expectations to magnetic property.
Powdery iron-containing raw material of the present invention and magnetic conductive media particle are the 20-500 order and distribute, and can mix at above-mentioned scope internal classification by proper proportion, and fully the gap between the powder filler particle has better uniformity and higher density to guarantee member.
The present invention can make the conducting magnetic component that is adopted on motor, the electrical equipment by the soft-magnetic composite material that said ratio constitutes, and the production craft step of described conducting magnetic component is:
One, iron-bearing material that is according to a certain ratio and magnetic conductive media stir, or it is even to add an amount of stirring solvent in above-mentioned two raw materials;
Two, the mixed powder that stirs is loaded in the shaping dies, under certain pressure, is shaped, then pressed compact is deviate from from mould.Can adopt single shaft to be shaped or the cold isostatic compaction mode to rigid die press forming, metal injection moulding, power forging shaping, warm-pressing formation, high temperature insostatic pressing (HIP).
The preferred warm-pressing formation mode of the present invention is compared with common mold pressing, and powder and mould only are heated to about 80 ℃～150 ℃, just can realize that required input is little so can add heating system on the ordinary powder press.And the green strength height that adopts warm-pressing technology to produce, can not bring the defective that produces by high temperature, machine work that can directly add, and pressing pressure again and ejection pressure are all lower, so die life height, can reduce production costs greatly.Simultaneously, adopt warm-pressing technology can improve the parts green density, can make the green density of iron powder parts reach 7.25～7.45g/cm
3, compare with traditional handicraft and to have improved 0.15～0.3g/cm
3, product has high strength.Compare with conventional moulded technology, the fatigue strength of part improves 10-40%, ultimate tensile strength improves 10%, sintered state ultimate tensile strength 〉=1200MPa, the ejection pressure of pressed compact low (reducing more than 30%), compact strength height (improving 125～200%), and elastic after effect little (0.1～0.16%), sintering shrinkage few (0.025～0.08%), compacting back powder density is even: general pressed compact each several part density contrast can reduce by 0.1～0.2g/cm
3Therefore, the made properties of product of warm-pressing technology are much better than prior art.
Three, the conducting magnetic component demoulding after will being shaped adopts sintering processing to solidify then, and shape of product is fixed.
The conventional high-temperature sintering temperature is generally more than 1100 ℃, time was at least more than 2 hours, the present invention is through overtesting, the sintering curing technology that adopts is: the conducting magnetic component after the demoulding is placed in the heating furnace heat, its temperature is 800 ℃-1100 ℃, and the time is 20-60 minute, can reach the desired properties requirement, save the energy, also reduced the member manufacturing cost.
In the practical application, conducting magnetic component also can be formed by stacking by multi-disc, can avoid producing eddy current loss.The combination of the multi-disc of conducting magnetic component realizes by the riveted joint mode in the prior art, add and must on member, stamp location hole man-hour, and then riveted joint mutually.This method can cause being connected not closely between sheet and the sheet, reduces crudy, can reduce the mechanical property of member simultaneously.The present invention is behind monolithic conducting magnetic component press forming, can be with the superimposed sintering together of polylith, utilize the crystallization between each chip bonding interface, can reach the effect identical with welding, strengthened the adhesive strength between sheet and the sheet, guarantee that it is superimposed tight, can not reduce the member mechanical strength, also can increase the aesthetic feeling of combination outer surface simultaneously.
Four, antirust processing or finishing are handled: owing to contain a large amount of ferro elements in the conducting magnetic component, the back component surface that is shaped is easy to generate corrosion, therefore, must do antirust processing, to remove the component surface corrosion, guarantees the member crudy.Adopt finishing to handle and to improve component surface fineness.
The embodiment of the concrete application of the present invention: be a reduced iron powder of 95% with weight proportion, 5% phosphorus alloy powder mixing, then said mixture is being heated on the heater about 80 ℃, put into the mould of setting, be pressed into needed magnetic profile of tooth, again powder and mould are put into to be heated on the heater and carried out the rigid mould compacting about 150 ℃, can be pressed into the thick magnetic profile of tooth of 5mm-20mm by dimensional requirement, after the demoulding, pressed compact is deviate from from mould, again pressed compact is placed high temperature sintering furnace, be warmed to 800 ℃～1100 ℃, take out after 30 minutes, do to carry out finished product packing after antirust processing and finishing are handled.
Because member compression moulding of the present invention and curing temperature are not very high, therefore, its processing technology can not produce any influence to the performance of member own, more can not bring the physical change and the chemical change of the member that causes because of heat, can make it have very high mechanical strength, guarantee the stable of member mechanical property effectively.
The conducting magnetic component of manufacturing of the present invention gets final product the defeated and dispersed fragment that becomes under big pressure, be easy to soft-magnetic composite material is separated with copper cash with magnetic separtor, and waste material is easy to reclaim, and meets present environmental requirement.
Material provided by the invention and technology are applicable to that induction machine and the following string of 1000W made more than the 10W hit motor, capacitor motor.
Claims (9)
1, a kind of soft-magnetic composite material that is used for conducting magnetic component is characterized in that: mixed by iron-bearing material and magnetic conductive media, iron content is in the conducting magnetic component that obtains thus: 85%-99.5%, the content of magnetic conduction element are 0.5%-15%.
2, a kind of soft-magnetic composite material that is used for conducting magnetic component according to claim 1 is characterized in that: described iron-bearing material weight proportion X and magnetic conductive media weight proportion Y in soft-magnetic composite material in soft-magnetic composite material are:
85≤xa
1+ya
2≤99.5
0.5≤xb
1+yb
2≤15
Wherein: a
1Be the iron content percentage in the iron-bearing material;
a
2Be magnetic conduction constituent content percentage in the iron-bearing material;
b
1Be iron content percentage in the magnetic conductive media;
b
2Be magnetic conduction constituent content percentage in the magnetic conductive media.
3, a kind of soft-magnetic composite material that is used for conducting magnetic component according to claim 1 and 2, it is characterized in that: described iron-bearing material comprises reduced iron powder, atomized iron powder, carbonyl iron particles and iron alloy powder.
4, a kind of soft-magnetic composite material that is used for conducting magnetic component according to claim 1 and 2 is characterized in that: described magnetic conductive media is for containing silicon, aluminium, nickel, phosphorus, cobalt, copper, molybdenum or other can increase the powdery alloy material of conducting magnetic component magnetic property.
5, a kind of soft-magnetic composite material that is used for conducting magnetic component according to claim 3, it is characterized in that: described powdery iron-containing material granule is distributed as the 20-500 order.
6, a kind of soft-magnetic composite material that is used for conducting magnetic component according to claim 4, it is characterized in that: described magnetic conductive media distribution of particles is the 20-500 order.
7, a kind of production technology by soft-magnetic composite material manufacturing conducting magnetic component is characterized in that comprising the steps:
One, mixes: iron-bearing material, magnetic conductive media are adopted the dryness mode by weight ratio or add the moist even mixing of an amount of solvent;
Two, be shaped: said mixture is made required form;
Three, solidify: the conducting magnetic component demoulding after will being shaped, adopt sintering processing to solidify then;
Four, antirust or finishing is handled.
8, the production technology by soft-magnetic composite material manufacturing conducting magnetic component according to claim 7 is characterized in that described forming technology adopts single shaft to be shaped or cold isostatic compaction to rigid die press forming, metal injection moulding, power forging shaping, warm-pressing formation, high temperature insostatic pressing (HIP).
9, the production technology of making conducting magnetic component by soft-magnetic composite material according to claim 7, it is characterized in that described sintering curing technology is: the conducting magnetic component after the demoulding is placed in the heating furnace heat, its temperature is 800 ℃-1100 ℃, and the time is 20-60 minute.
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|---|---|---|---|
| CN 200510031612 CN1700366A (en) | 2005-05-27 | 2005-05-27 | Soft-magnetic composite material for magnetic conduction component and process for preparing magnetic conduction component |
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|---|---|---|---|
| CN 200510031612 CN1700366A (en) | 2005-05-27 | 2005-05-27 | Soft-magnetic composite material for magnetic conduction component and process for preparing magnetic conduction component |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489398A (en) * | 2011-12-21 | 2012-06-13 | 昆明理工大学 | Magnetic matrix used for high silicon cold rolling prism-shaped rod type magnet separator |
| CN103028352A (en) * | 2012-12-10 | 2013-04-10 | 江苏大学 | Preparation method for synthesizing MoS2/Fe3O4 nano composite material |
-
2005
- 2005-05-27 CN CN 200510031612 patent/CN1700366A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102489398A (en) * | 2011-12-21 | 2012-06-13 | 昆明理工大学 | Magnetic matrix used for high silicon cold rolling prism-shaped rod type magnet separator |
| CN103028352A (en) * | 2012-12-10 | 2013-04-10 | 江苏大学 | Preparation method for synthesizing MoS2/Fe3O4 nano composite material |
| CN103028352B (en) * | 2012-12-10 | 2014-12-03 | 江苏大学 | Preparation method for synthesizing MoS2/Fe3O4 nano composite material |
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