CN100567206C - A kind of method for mixing of particle material used for soft-magnetic ferrite forming - Google Patents
A kind of method for mixing of particle material used for soft-magnetic ferrite forming Download PDFInfo
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- CN100567206C CN100567206C CNB2006101549204A CN200610154920A CN100567206C CN 100567206 C CN100567206 C CN 100567206C CN B2006101549204 A CNB2006101549204 A CN B2006101549204A CN 200610154920 A CN200610154920 A CN 200610154920A CN 100567206 C CN100567206 C CN 100567206C
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Abstract
The present invention relates to a kind of method for mixing of particle material used for soft-magnetic ferrite forming; This method comprises A, batching; B, spraying; C, batch mixing; D, place four steps, 1, the higher problem that can in subsequent technique, not produce the product crackle of particle material used for soft-magnetic ferrite forming water content that adopts method for mixing of the present invention to be prepared from; 2, method for mixing of the present invention is because the particle material used for soft-magnetic ferrite forming that has added proper amount of lubricating agent and tensio-active agent and adopted unique mixing procedure to be prepared from not only makes its water content 1.5%～2.5%, and can not produce the phenomenon of moulding sticking to mould; 3, adopt method for mixing of the present invention not only can the composition and the magnetic properties of soft magnetic ferrite product not had a negative impact, and improved shaping efficiency, reduced forming pressure.
Description
Technical field
The present invention relates to the half-finished manufacture method of a kind of Ferrite Material, relate in particular to a kind of method for mixing of particle material used for soft-magnetic ferrite forming; The manufacturing field that belongs to magneticsubstance.
Background technology
Soft magnetic ferrite can be divided into spinel type and flush type hexaplanar two classes such as MnZn, NiZn, MgZn, MnMgZn by composition; Soft magnetic ferrite has high magnetic permeability, high resistivity, low-loss and good wear resistance, thereby the deflector coil of making of soft magnetic ferrite, kickback transformer, rotating transformer, in all transformers, pulse transformer, switch power supply, wave filter, reactance coil, inducer, anti-electromagnetic interference transformer, electric ballasts etc. (broad sense is called electronic transformer) are at computer, micro-cells, communication, office automation, indicating meter, remote monitoring, colour receiver, audio-visual apparatus, household electrical appliance, electromagnetic compatibility, green illumination, play filtering in environmental protection and energy saving and the electronic information, the impedance conversion, effect such as energy storage and energy transformation is widely used.
Soft magnetic ferrite by batching, pre-burning, grind, technological process such as mist projection granulating, batch mixing, moulding, sintering is made, since in the mist projection granulating process because of the influence of slurry moisture volatilization and equipment, cause water content, degree of tightness proportion, flowability and the size-grade distribution state of spraying granule material to produce interim variation, can eliminate the instability that the mist projection granulating process is caused by mixing procedure, the consistence of particulate material is guaranteed; At present, the mixing procedure of particle material used for soft-magnetic ferrite forming can only be controlled at 0.3～0.5% with the water content of particulate material, thereby cause particulate material in moulding process, easily to produce cracking and mold sticking, have a strong impact on the raising of the quality and the restriction moulding production efficiency of molded blank.
Summary of the invention
The present invention is directed to the low defective that causes particulate material in moulding process, easily to produce cracking and sticking to mould of particulate material water content of the method for mixing preparation of existing particle material used for soft-magnetic ferrite forming, a kind of method for mixing of new particle material used for soft-magnetic ferrite forming is provided; Particulate material by this method preparation can remain on 1.5～2.5% with water content; Not only avoid particulate material in moulding process, easily to produce the defective of cracking and sticking to mould, and improved shaping efficiency greatly.
Above-mentioned technical problem of the present invention is implemented by the following technical programs: a kind of method for mixing of particle material used for soft-magnetic ferrite forming, and this method may further comprise the steps:
A, batching: the soft magnetic ferrite particles material behind good lubricant of weighing and the mist projection granulating is put into mixer in proportion, and wherein said particulate material and lubricant weight are 1000: 1～5;
B, spraying: in 1～10 rev/min of rotary course, tensio-active agent and the water that atomizes is sprayed in the particulate material at mixer; Wherein said particulate material and tensio-active agent weight ratio are 1000: 2～15; Described particulate material and water weight ratio are 1000: 1～50;
C, batch mixing: after the tensio-active agent of above-mentioned atomizing and water all sprayed into, mixer 1～10 rev/min of rotation 1～10 minute with the abundant mixing of particulate material;
D, placement: after the particulate material behind the above-mentioned abundant mixing at room temperature placed 5～15 hours, promptly get particle material used for soft-magnetic ferrite forming.
Soft ferromagnetic powder is the problem of product crackle to Forming Quality and yield effect maximum in moulding process; The major cause that causes crackle is that the particulate material water content is low, thereby causes that in the moulding process particulate material poor adhesion causes.But simple passing through adds entry improves water content, can cause the forming mould sticking to mould, thereby influences the soft magnetic ferrite product design; Adopt method for mixing of the present invention, and in the batch mixing process, added proper amount of lubricating agent and tensio-active agent, the water content of particulate material can be brought up to 1.5～2.5% by 0.3～0.5% and neither can cause the product crackle, also can not produce the phenomenon of moulding sticking to mould.
In the method for mixing of above-mentioned particle material used for soft-magnetic ferrite forming, the lubricant described in the steps A is a Zinic stearas; Zinic stearas is to be the evaporable lubricant about 200 ℃, and after the moulding of soft magnetic ferrite product, needs the high temperature sintering through 1300 ℃, so the interpolation of Zinic stearas not only can not have a negative impact to the composition and the characteristic of soft magnetic ferrite product; And in the batch mixing process, can improve the water content of particulate material.
As preferably, particulate material described in the steps A and lubricant weight are 1000: 2～4; Such ratio is that the weight of particulate material and lubricant in the above-mentioned batch mixing process is further optimized and restriction, to producing the better particle material used for soft-magnetic ferrite forming of performance.
In the method for mixing of above-mentioned particle material used for soft-magnetic ferrite forming, the tensio-active agent described in the step B is a kerosene, and described water is deionized water or distilled water; Kerosene is to be the evaporable tensio-active agent about 200 ℃, and after the moulding of soft magnetic ferrite product, need high temperature sintering through 1300 ℃, so the interpolation of kerosene not only can not have a negative impact to the composition and the characteristic of soft magnetic ferrite product, and the superpower Penetration Signature of kerosene makes particulate material softening, particle is more prone to broken in moulding process, thereby has improved shaping efficiency, has reduced forming pressure.And adopt deionized water or distilled water can reduce foreign matter content in the soft magnetic ferrite in the present invention, improve its magnetic property.
As preferably, particulate material described in the step B and tensio-active agent weight ratio are 1000: 4～15; Described particulate material and water weight ratio are 1000: 5～30.Such ratio is that the weight of particulate material and tensio-active agent and water in the above-mentioned batch mixing process is further optimized and restriction, to producing the better particle material used for soft-magnetic ferrite forming of performance.
As preferably, after among the step C tensio-active agent of above-mentioned atomizing and water all being sprayed into, mixer was 3～5 rev/mins of rotations 3～5 minutes.
As preferably, after the particulate material described in the step D is at room temperature placed 8～10 hours, promptly get particle material used for soft-magnetic ferrite forming.
The water content 1.5～2.5% of the particle material used for soft-magnetic ferrite forming of making by above-mentioned method for mixing, and the raising of water content can not produce the phenomenon of forming mould mucous membrane in moulding process.
Therefore, the method for mixing of particle material used for soft-magnetic ferrite forming of the present invention has the following advantages:
1, the higher problem that can in subsequent technique, not produce the product crackle of particle material used for soft-magnetic ferrite forming water content that adopts method for mixing of the present invention to be prepared from;
2, method for mixing of the present invention is because the particle material used for soft-magnetic ferrite forming that has added proper amount of lubricating agent and tensio-active agent and adopted unique mixing procedure to be prepared from not only makes its water content 1.5～2.5%, and can not produce the phenomenon of moulding sticking to mould;
3, adopt method for mixing of the present invention not only can the composition and the electromagnetic property of soft magnetic ferrite product not had a negative impact, and improved shaping efficiency, reduced forming pressure.
Embodiment
Below by embodiment, technical scheme of the present invention is described in further detail; Be not limited to these embodiment but do not invent.
Embodiment 1
Take by weighing through soft magnetic ferrite spherical particle material and Zinic stearas behind the spray-drying tower mist projection granulating and put into HL3000 bucket formula mixer, wherein the weight ratio of particulate material and Zinic stearas is 1000: 1;
Open barrel switch of formula mixer, the speed of rotation that makes it joins tensio-active agent kerosene and the deionized water that atomizes in the particulate material at 3 rev/mins, and wherein the weight ratio of particulate material and kerosene is 1000: 2; The weight ratio of particulate material and deionized water is 1000: 50; When kerosene to be atomized and deionized water all spray in the particulate material, allow barrel formula mixer speed of rotation under 3 rev/mins condition the rotation 5 minutes, treat to turn off barrel switch of formula mixer behind the abundant mixing of particulate material and kerosene and water; Particulate material behind the above-mentioned abundant mixing is placed under the room temperature to place promptly gets particle material used for soft-magnetic ferrite forming after 8 hours.
Comparative example 1
The dry type batch mixing: will carry out the dry type batch mixing by bucket formula mixer through the soft magnetic ferrite spherical particle material behind the spray-drying tower mist projection granulating, mixing time promptly gets particle material used for soft-magnetic ferrite forming after 25 minutes.
Comparative example 2
The wet type batch mixing: will add weight percent through the soft magnetic ferrite spherical particle material behind the spray-drying tower mist projection granulating is that 2.5% water carries out the wet type batch mixing, and mixing time promptly gets particle material used for soft-magnetic ferrite forming after 25 minutes.
The particle material used for soft-magnetic ferrite forming that the foregoing description 1, comparative example 1 and comparative example 2 are made gets molded blank by moulding process.
Wherein the particulate material made of embodiment 1 can not produce the mucous membrane phenomenon in moulding process, and the outward appearance of product is better, and the blank after the moulding cracking phenomena can not occur; And shaping efficiency is higher, and forming pressure is 1000N.
The particulate material that comparative example 1 is made can not produce the mucous membrane phenomenon in moulding process, crackle can appear in the blank after the moulding, and shaping efficiency is lower, and forming pressure is 1300N.
The particulate material that comparative example 2 is made can produce the mucous membrane phenomenon in moulding process, the outward appearance of blank is relatively poor after the moulding, and the blank after the moulding crackle can not occur, and shaping efficiency is lower, and forming pressure is 1000N.
Embodiment 2
Take by weighing through soft magnetic ferrite spherical particle material and Zinic stearas behind the spray-drying tower mist projection granulating and put into HL3000 bucket formula mixer, wherein the weight ratio of particulate material and Zinic stearas is 1000: 2;
Open the switch of HL3000 bucket formula mixer, the speed of rotation that makes it joins tensio-active agent kerosene and the deionized water that atomizes in the particulate material at 10 rev/mins, and wherein the weight ratio of particulate material and kerosene is 1000: 4; The weight ratio of particulate material and deionized water is 1000: 3; When kerosene to be atomized and distilled water all spray in the particulate material, allow barrel formula mixer speed of rotation under 10 rev/mins condition the rotation 1 minute, treat to turn off barrel switch of formula mixer behind the abundant mixing of particulate material and kerosene and water; Particulate material behind the above-mentioned abundant mixing is placed under the room temperature to place promptly gets particle material used for soft-magnetic ferrite forming after 15 hours.
Embodiment 3
Take by weighing through soft magnetic ferrite spherical particle material and Zinic stearas behind the spray-drying tower mist projection granulating and put into HL3000 bucket formula mixer, wherein the weight ratio of particulate material and Zinic stearas is 1000: 4;
Open barrel switch of formula mixer, the speed of rotation that makes it joins tensio-active agent kerosene and the deionized water that atomizes in the particulate material at 1 rev/min, and wherein the weight ratio of particulate material and kerosene is 1000: 4; The weight ratio of particulate material and deionized water is 1000: 3; When kerosene to be atomized and distilled water all spray in the particulate material, allow barrel formula mixer speed of rotation under 1 rev/min condition the rotation 10 minutes, treat to turn off barrel switch of formula mixer behind the abundant mixing of particulate material and kerosene and water; Particulate material behind the above-mentioned abundant mixing is placed under the room temperature to place promptly gets particle material used for soft-magnetic ferrite forming after 10 hours.
Embodiment 4
Take by weighing through soft magnetic ferrite spherical particle material and Zinic stearas behind the spray-drying tower mist projection granulating and put into HL3000 bucket formula mixer, wherein the weight ratio of particulate material and Zinic stearas is 1000: 5;
Open barrel switch of formula mixer, the speed of rotation that makes it joins tensio-active agent kerosene and the deionized water that atomizes in the particulate material at 5 rev/mins, and wherein the weight ratio of particulate material and kerosene is 1000: 15; The weight ratio of particulate material and deionized water is 1000: 1; When kerosene to be atomized and distilled water all spray in the particulate material, allow barrel formula mixer speed of rotation under 5 rev/mins condition the rotation 3 minutes, treat to turn off barrel switch of formula mixer behind the abundant mixing of particulate material and kerosene and water; Particulate material behind the above-mentioned abundant mixing is placed under the room temperature to place promptly gets particle material used for soft-magnetic ferrite forming after 5 hours.
With the soft magnetic ferrite that the particle material used for soft-magnetic ferrite forming of embodiment 1～4 preparation obtains after by technologies such as moulding, sintering, its magnetic property is as shown in table 1:
Table 1: the magnetic property of the soft magnetic ferrite of the particulate material preparation of employing embodiment 1～4
Adopt method for mixing of the present invention to obtain the magnetic property not influence of particulate material as can be seen from Table 1 to the soft magnetic ferrite of post-order process preparation.
Specific embodiment described in the present invention only is that the present invention's spirit is illustrated.The technician of the technical field of the invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although the present invention has been made detailed explanation and has quoted some specific exampless as proof, to those skilled in the art, only otherwise leave that the spirit and scope of the present invention can be done various variations or correction is obvious.
Claims (7)
1, a kind of method for mixing of particle material used for soft-magnetic ferrite forming, this method may further comprise the steps:
A, batching: the soft magnetic ferrite particles material behind good lubricant of weighing and the mist projection granulating is put into mixer in proportion, and wherein said particulate material and lubricant weight are 1000: 1～5;
B, spraying: in 3～5 rev/mins of rotary courses, tensio-active agent and the water that atomizes is sprayed in the particulate material at mixer; Wherein said particulate material and tensio-active agent weight ratio are 1000: 2～15; Described particulate material and water weight ratio are 1000: 1～50;
C, batch mixing: after the tensio-active agent of above-mentioned atomizing and water all sprayed into, mixer was 1～10 rev/min of rotation after 1～10 minute, with the abundant mixing of particulate material;
D, placement: after the particulate material behind the above-mentioned abundant mixing at room temperature placed 5～15 hours, promptly get particle material used for soft-magnetic ferrite forming,
Wherein, the lubricant described in the steps A is a Zinic stearas; Tensio-active agent described in the step B is a kerosene.
2, the method for mixing of particle material used for soft-magnetic ferrite forming according to claim 1 is characterized in that: particulate material described in the steps A and lubricant weight are 1000: 2～4.
3, the method for mixing of particle material used for soft-magnetic ferrite forming according to claim 1 is characterized in that: the water described in the step B is deionized water or distilled water.
4, according to the method for mixing of claim 1 or 3 described particle material used for soft-magnetic ferrite forming, it is characterized in that: particulate material described in the step B and tensio-active agent weight ratio are 1000: 4～15; Described particulate material and water weight ratio are 1000: 5～30.
5, the method for mixing of particle material used for soft-magnetic ferrite forming according to claim 1 is characterized in that: after among the step C tensio-active agent of above-mentioned atomizing and water all being sprayed into, mixer was 3～5 rev/mins of rotations 3～5 minutes.
6, the method for mixing of particle material used for soft-magnetic ferrite forming according to claim 1 is characterized in that: after the particulate material described in the step D is at room temperature placed 8～10 hours, promptly get particle material used for soft-magnetic ferrite forming.
7, according to the method for mixing of claim 1 or 6 described particle material used for soft-magnetic ferrite forming, it is characterized in that: through the water content 1.5%～2.5% of particle material used for soft-magnetic ferrite forming prepared behind the step D.
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| CNB2006101549204A CN100567206C (en) | 2006-11-30 | 2006-11-30 | A kind of method for mixing of particle material used for soft-magnetic ferrite forming |
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| CN107721404A (en) * | 2017-11-10 | 2018-02-23 | 北矿磁材科技有限公司 | For manufacturing the dry-pressing opposite sex magnetic of multisegmented rotor, its preparation method and by its obtained permanent-magnet ferrite |
| CN110483068A (en) * | 2019-08-05 | 2019-11-22 | 无锡斯贝尔磁性材料有限公司 | A kind of moisture control method of manganese-zinc ferrite powder |
| CN113402284B (en) * | 2021-07-27 | 2022-10-21 | 横店集团东磁股份有限公司 | Method for solving sintering cracking of soft magnetic ferrite |
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Non-Patent Citations (1)
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| 软磁铁氧体粉料"均匀性"的改善. 温彩云.江苏陶瓷，第33卷第4期. 2000 * |
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