CN110639777A - Amorphous product surface coating treatment method, magnetic core and magnetic powder core preparation method - Google Patents
Amorphous product surface coating treatment method, magnetic core and magnetic powder core preparation method Download PDFInfo
- Publication number
- CN110639777A CN110639777A CN201910882617.3A CN201910882617A CN110639777A CN 110639777 A CN110639777 A CN 110639777A CN 201910882617 A CN201910882617 A CN 201910882617A CN 110639777 A CN110639777 A CN 110639777A
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- Prior art keywords
- amorphous product
- insulating
- surface coating
- treatment
- amorphous
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
- B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
- B05D1/06—Applying particulate materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0218—Pretreatment, e.g. heating the substrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
- B05D7/544—No clear coat specified the first layer is let to dry at least partially before applying the second layer
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0213—Manufacturing of magnetic circuits made from strip(s) or ribbon(s)
- H01F41/0226—Manufacturing of magnetic circuits made from strip(s) or ribbon(s) from amorphous ribbons
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2504/00—Epoxy polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2518/00—Other type of polymers
Abstract
The invention provides a surface coating treatment method for an amorphous product, which comprises the following steps: s1, performing surface pretreatment on the amorphous product to form a pretreatment insulating layer on the surface of the amorphous product; s2, carrying out preheating treatment on the amorphous product after surface pretreatment, and then carrying out roller coating treatment on the amorphous product by using a second insulating material; and adsorbing and melting the second insulating material by the preheated amorphous product with self heat so as to form a roll coating on the pretreated insulating layer. Based on the application of the amorphous product surface coating treatment method, the spraying qualification rate of the amorphous product is effectively improved, and the surface quality of the insulating coating of the amorphous product is improved; meanwhile, the uniformity of the thickness of the insulating coating can be ensured, and the coating material is saved.
Description
Technical Field
The invention relates to the technical field of soft magnetic alloy metallurgy, in particular to a method for treating a surface coating of an amorphous product, a magnetic core and a method for preparing a magnetic powder core.
Background
The amorphous material has high saturation magnetic induction, high magnetic conductivity, low coercive force, low high-frequency loss, good strong hardness, wear resistance, corrosion resistance, good temperature and environmental stability and the like, has excellent comprehensive performance, replaces permalloy, silicon steel and ferrite, is applied to power electronic technology, shows the characteristics of small volume, high efficiency, energy conservation and the like, and has the optimal cost performance ratio in all metal soft magnetic materials.
An amorphous material product can be made into a magnetic core or a magnetic powder core by conventional application, and the surface of the amorphous material product is coated with an insulating coating under normal conditions; however, the surface of the amorphous product is rough, and the insulating coating on the surface of the amorphous product often has the phenomena of residual holes, bare coating, uneven coating and the like. In the prior art, the liquid spraying has great pollution to the environment and the product appearance is poor; the additional consumption of insulating materials used for electrostatic spraying is large, and the appearance is difficult to control; the roller coating can cause various surface coating defects on amorphous products, and the product yield is low. Solving the coating problem of amorphous products, an effective coating treatment method for the amorphous products is needed.
Disclosure of Invention
The invention aims to provide a method for treating a surface coating of an amorphous product, a magnetic core and a method for preparing a magnetic powder core, aiming at overcoming the defects of the prior art.
The surface coating treatment method of the amorphous product comprises the following steps:
s1, performing surface pretreatment on the amorphous product to form a pretreatment insulating layer on the surface of the amorphous product;
s2, carrying out preheating treatment on the amorphous product after surface pretreatment, and then carrying out roller coating treatment on the amorphous product by using a second insulating material; and adsorbing and melting the second insulating material by the preheated amorphous product with self heat so as to form a roll coating on the pretreated insulating layer.
Further, the thickness range of the pretreatment insulating layer is 20-150 mu m, and the thickness range of the roller coating layer is 100-400 mu m.
Further, the thickness range of the pretreatment insulating layer is 30-80 μm, and the thickness range of the roller coating layer is 150-250 μm.
Further, in step S1, the method includes the following steps:
s1-01, heating the amorphous product;
and S1-02, performing electrostatic spraying treatment on the heated and heated amorphous product by using first insulating powder so as to form the pretreated insulating layer on the surface of the amorphous product.
Further, in the step S1-01, the heating temperature is 150-250 ℃.
Further, the first insulating powder and/or the second insulating material is acetal insulating powder, phenolic insulating powder, or epoxy insulating powder, and preferably phenolic resin, varnish, or epoxy powder.
Further, in step S1, the method includes the following steps:
s1-11, carrying out spraying treatment on the amorphous product by using first insulating paint;
and S1-21, baking and heating the sprayed amorphous product to form the pre-treatment insulating layer on the surface of the sprayed amorphous product.
Further, in the step S1-21, the baking temperature rise temperature is 100-150 ℃.
Further, the first insulating paint is acetal insulating paint or phenolic insulating paint or epoxy insulating paint.
Further, in step S2, the preheating temperature is 180 to 240 DEG C
The preparation method of the magnetic core comprises the following steps:
s1, winding or overlapping the amorphous strip, and annealing to obtain a magnetic core substrate;
s2, carrying out surface coating treatment on the magnetic core substrate, wherein in the surface coating treatment process, the surface coating treatment method of the amorphous product is applied.
The preparation method of the magnetic powder core comprises the following steps:
s1, pressing, sintering, annealing and curing the amorphous powder to obtain a magnetic powder core matrix;
s2, carrying out surface coating treatment on the magnetic powder core substrate, wherein in the surface coating treatment process, the surface coating treatment method of the amorphous product is applied.
The invention has the beneficial effects that:
based on the application of the amorphous product surface coating treatment method, the spraying qualification rate of the amorphous product is effectively improved, and the surface quality of the insulating coating of the amorphous product is improved; meanwhile, the uniformity of the thickness of the insulating coating can be ensured, and the coating material is saved.
Detailed Description
In order to make the technical solution, objects and advantages of the present invention more apparent, the present invention will be further explained with reference to the following embodiments.
In the invention, a surface coating treatment method of an amorphous product is applied, which comprises the following steps:
s1, performing surface pretreatment on the amorphous product to form a pretreatment insulating layer on the surface of the amorphous product;
s2, carrying out preheating treatment on the amorphous product after surface pretreatment, wherein the preheating treatment temperature is 180-240 ℃; then, performing roller coating treatment by using a second insulating material; and adsorbing and melting the second insulating material by the preheated amorphous product with self heat so as to form a roll coating on the pretreated insulating layer.
The second insulating material is acetal insulating powder, phenolic insulating powder or epoxy insulating powder.
The thickness range of the pre-treatment insulating layer is 20-150 mu m, and preferably 30-80 mu m; the thickness range of the roller coating is 100-400 mu m, and preferably 150-250 mu m.
Example 1:
in step S1, the method includes the following steps:
s1-01, heating the amorphous product to a temperature of 150-250 ℃;
s1-02, performing electrostatic spraying treatment on the heated and heated amorphous product by using electrostatic spraying equipment and first insulating powder to form the pretreated insulating layer on the surface of the amorphous product; the first insulating powder is acetal insulating powder, phenolic insulating powder or epoxy insulating powder.
Example 2:
in step S1, the method includes the following steps:
s1-11, performing spraying treatment on the amorphous product by a first insulating varnish through a liquid spray gun; the first insulating paint is acetal insulating paint or phenolic insulating paint or epoxy insulating paint;
s1-21, baking and heating the amorphous product after spraying treatment, wherein the baking and heating temperature is 100-150 ℃; so that the surface of the amorphous product is formed with the pretreatment insulating layer.
Specifically, the application principle of the amorphous product surface coating treatment method is as follows:
firstly, performing surface pretreatment on the amorphous product by using first insulating powder or first insulating paint to prepare a thin insulating pretreatment insulating layer on the surface of a rough amorphous product, so that the insulating property of the amorphous product is improved and the surface defects (such as residual holes) of the amorphous product are compensated to a certain extent; and then the amorphous product is subjected to roller coating treatment by using a second insulating material. Based on the premise that the amorphous product is preheated, the second insulating material in the material box can be adsorbed by the heated amorphous product in a roll coating mode to form a roll coating.
In the roll coating process, the amorphous product is in a rolling state in the material box, and the rolling speed of the amorphous product is controlled through the parameter and process adjustment of roll coating equipment, so that the uniformity of the roll coating formed by the amorphous product can be effectively controlled; the second insulating materials are intensively placed in a material box, so that the second insulating materials in the roll coating process are intensively arranged without scattering, the roll coating process basically does not consume the second insulating materials additionally, and raw materials are saved.
Compared with the prior art that the insulating coating on the surface of the amorphous product is processed by directly applying a spraying mode or directly applying a rolling coating mode, the scheme is based on the step-by-step processing application of the double-layer insulating coating, and the thickness and the uniformity of the insulating coating are controlled by adjusting the matching of the parameters of the rolling coating equipment, and the surface quality of the insulating coating is improved.
The surface coating treatment method of the amorphous product can be used for preparing the amorphous magnetic core or the amorphous magnetic powder core.
The preparation method of the amorphous magnetic core comprises the following steps:
(1) winding or overlapping the amorphous strip, and annealing to obtain a magnetic core substrate;
(2) and carrying out surface coating treatment on the magnetic core substrate, wherein the surface coating treatment method of the amorphous product is applied in the surface coating treatment process.
The preparation method of the amorphous magnetic powder core comprises the following steps:
(1) carrying out pressing treatment, sintering treatment, annealing treatment and curing treatment on amorphous powder to obtain a magnetic powder core matrix;
(2) and carrying out surface coating treatment on the magnetic powder core substrate, wherein the surface coating treatment method of the amorphous product is applied in the surface coating treatment process.
The above description is only a preferred embodiment of the present invention, and those skilled in the art may still modify the described embodiment without departing from the implementation principle of the present invention, and the corresponding modifications should also be regarded as the protection scope of the present invention.
Claims (10)
1. The method for treating the surface coating of the amorphous product is characterized by comprising the following steps of:
s1, performing surface pretreatment on the amorphous product to form a pretreatment insulating layer on the surface of the amorphous product;
s2, carrying out preheating treatment on the amorphous product after surface pretreatment, and then carrying out roller coating treatment on the amorphous product by using a second insulating material; and adsorbing and melting the second insulating material by the preheated amorphous product with self heat so as to form a roll coating on the pretreated insulating layer.
2. The method for treating the surface coating of the amorphous product according to claim 1, wherein the thickness of the pre-treatment insulating layer is in a range of 20 to 150 μm, and the thickness of the roller coating is in a range of 100 to 400 μm.
3. The method for treating the surface coating of the amorphous product according to claim 2, wherein the thickness of the pre-treatment insulating layer is in a range of 30 to 80 μm, and the thickness of the roller coating is in a range of 150 to 250 μm.
4. The method for surface coating treatment of an amorphous product according to claim 1, wherein step S1 comprises the steps of:
s1-01, heating the amorphous product;
and S1-02, performing electrostatic spraying treatment on the heated and heated amorphous product by using first insulating powder so as to form the pretreated insulating layer on the surface of the amorphous product.
5. The method for treating the surface coating of the amorphous product according to claim 4, wherein in the step S1-01, the heating temperature is 150-250 ℃; the first insulating powder and/or the second insulating material is acetal insulating powder, phenolic insulating powder or epoxy insulating powder.
6. The method for surface coating treatment of an amorphous product according to claim 1, wherein step S1 comprises the steps of:
s1-11, carrying out spraying treatment on the amorphous product by using first insulating paint;
and S1-21, baking and heating the sprayed amorphous product to form the pre-treatment insulating layer on the surface of the sprayed amorphous product.
7. The method for treating the surface coating of the amorphous product according to claim 6, wherein in the step S1-21, the baking temperature is raised to 100-150 ℃; the first insulating paint is acetal insulating paint or phenolic insulating paint or epoxy insulating paint.
8. The method for surface coating treatment of an amorphous product according to claim 1, wherein the preheating treatment temperature is 180 to 240 ℃ in step S2.
9. The preparation method of the magnetic core is characterized by comprising the following steps of:
s1, winding or overlapping the amorphous strip, and annealing to obtain a magnetic core substrate;
s2, carrying out surface coating treatment on the magnetic core substrate, wherein in the surface coating treatment process, the surface coating treatment method of the amorphous product as claimed in any one of claims 1 to 8 is applied.
10. The preparation method of the magnetic powder core is characterized by comprising the following steps:
s1, pressing, sintering, annealing and curing the amorphous powder to obtain a magnetic powder core matrix;
s2, carrying out surface coating treatment on the magnetic powder core substrate, wherein in the surface coating treatment process, the surface coating treatment method of the amorphous product according to any one of claims 1 to 8 is applied.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910882617.3A CN110639777A (en) | 2019-09-18 | 2019-09-18 | Amorphous product surface coating treatment method, magnetic core and magnetic powder core preparation method |
| CN202010056960.5A CN111068992A (en) | 2019-09-18 | 2020-01-16 | Powder coating method, finished product powder and finished product magnetic powder core preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910882617.3A CN110639777A (en) | 2019-09-18 | 2019-09-18 | Amorphous product surface coating treatment method, magnetic core and magnetic powder core preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110639777A true CN110639777A (en) | 2020-01-03 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910882617.3A Pending CN110639777A (en) | 2019-09-18 | 2019-09-18 | Amorphous product surface coating treatment method, magnetic core and magnetic powder core preparation method |
| CN202010056960.5A Withdrawn CN111068992A (en) | 2019-09-18 | 2020-01-16 | Powder coating method, finished product powder and finished product magnetic powder core preparation method |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010056960.5A Withdrawn CN111068992A (en) | 2019-09-18 | 2020-01-16 | Powder coating method, finished product powder and finished product magnetic powder core preparation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116532335A (en) * | 2023-05-05 | 2023-08-04 | 深圳市高图先进材料技术有限公司 | Preparation method of low-stress composite coating of coiled iron core, coiled iron core and application |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110600219A (en) * | 2019-09-18 | 2019-12-20 | 佛山市中研非晶科技股份有限公司 | Composite amorphous alloy powder and preparation method thereof |
| CN110571010A (en) * | 2019-09-18 | 2019-12-13 | 佛山市中研非晶科技股份有限公司 | Composite amorphous finished product powder and preparation method thereof |
| CN110534283A (en) * | 2019-09-18 | 2019-12-03 | 佛山市中研非晶科技股份有限公司 | Composite amorphous powder core and preparation method thereof |
-
2019
- 2019-09-18 CN CN201910882617.3A patent/CN110639777A/en active Pending
-
2020
- 2020-01-16 CN CN202010056960.5A patent/CN111068992A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116532335A (en) * | 2023-05-05 | 2023-08-04 | 深圳市高图先进材料技术有限公司 | Preparation method of low-stress composite coating of coiled iron core, coiled iron core and application |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111068992A (en) | 2020-04-28 |
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Application publication date: 20200103 |