CN112151257A - Solidification production process of ultracrystalline iron core for current transformer - Google Patents
Solidification production process of ultracrystalline iron core for current transformer Download PDFInfo
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- CN112151257A CN112151257A CN202011039999.2A CN202011039999A CN112151257A CN 112151257 A CN112151257 A CN 112151257A CN 202011039999 A CN202011039999 A CN 202011039999A CN 112151257 A CN112151257 A CN 112151257A
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- iron core
- curing
- parts
- ultracrystalline
- current transformer
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/20—Instruments transformers
- H01F38/22—Instruments transformers for single phase ac
- H01F38/28—Current transformers
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
The invention discloses a curing production process of an ultracrystalline iron core for a current transformer, which relates to the technical field of curing production of the ultracrystalline iron core for the current transformer, in particular to the curing production process of the ultracrystalline iron core for the current transformer, and comprises the following steps: s1, mixing configuration; s2, ultra-microcrystalline iron core treatment; s3, drying, curing and molding; and S4, secondary curing. The curing production process of the ultracrystalline iron core for the current transformer comprises the steps of taking epoxy resin pouring sealant as a raw material, mixing the raw material according to a proportion, uniformly stirring the mixture to obtain mixed glue solution, coating the ultracrystalline iron core after heat treatment and paint dipping, placing the iron core in a constant-temperature drying box, heating the iron core for curing and shaping, and then carrying out secondary curing by using a silicone grease transparent curing agent, so that the hardness of the iron core is obviously improved, the performance change of the transformer after pouring is reduced, the mounting of a protective box is replaced, and the cost is reduced.
Description
Technical Field
The invention relates to the technical field of solidification production of an ultracrystalline iron core for a current transformer, in particular to a solidification production process of the ultracrystalline iron core for the current transformer.
Background
The current transformer principle is based on the electromagnetic induction principle. The current transformer is composed of a closed iron core and a winding. The primary side winding of the current transformer has few turns and is connected in series in a circuit of current to be measured, so that all current of the circuit always flows through the current transformer, the secondary side winding has more turns and is connected in series in a measuring instrument and a protection circuit, and when the current transformer works, the secondary side circuit of the current transformer is always closed, so that the impedance of the series coil of the measuring instrument and the protection circuit is very small, and the working state of the current transformer is close to short circuit. The current transformer converts a large current on the primary side into a small current on the secondary side for use, and the secondary side cannot be opened.
The iron core has weak hardness, the performance of the mutual inductor after casting is changed more, the consumption of raw materials is increased, and the production cost is increased.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a curing production process of an ultracrystalline iron core for a current transformer, which solves the problems that the hardness of the iron core is weak, the performance of the transformer after casting is changed greatly, the consumption of raw materials is increased, and the production cost is increased in the background technology.
In order to achieve the purpose, the invention is realized by the following technical scheme: a solidification production process of an ultracrystalline iron core for a current transformer comprises the following steps:
s1, mixed configuration: taking epoxy resin pouring sealant as a raw material, mixing according to a ratio of 2:1, and uniformly stirring to obtain a mixed glue solution A;
s2, ultra-microcrystalline iron core treatment: sequentially carrying out heat treatment and paint dipping on the ultracrystalline iron core;
s3, drying, curing and molding: coating the mixed glue solution A in the mixing in the step S1 on the surface of the ultracrystalline iron core in the ultracrystalline iron core treatment in the step S2, and heating the ultracrystalline iron core in a constant-temperature drying oven for curing and shaping;
s4, secondary curing: and in the step S3, drying, curing and forming, carrying out secondary curing on the cured and formed ultracrystalline iron core by using a silicone grease transparent curing agent.
Optionally, the epoxy resin pouring sealant comprises a group A and a group B which are separately stored, wherein the group A comprises an epoxy resin matrix, an active diluent, a toughening agent, a coupling agent, a defoaming agent and an antibacterial agent, and the epoxy resin pouring sealant comprises, by mass, 30-40 parts of the epoxy resin matrix, 2-6 parts of the active diluent, 2-6 parts of the coupling agent, 5-15 parts of the defoaming agent, 5-15 parts of the toughening agent and 1-3 parts of the antibacterial agent; sequentially adding 30-40 parts of the epoxy resin matrix, 2-6 parts of an active diluent, 2-6 parts of a coupling agent, 5-15 parts of a defoaming agent, 5-15 parts of a toughening agent and 1-3 parts of an antibacterial agent into a reaction kettle, and uniformly stirring; the group B comprises 50-60 parts of curing agent and 5-15 parts of curing accelerator by mass.
Optionally, in the step S2, in the ultracrystalline iron core treatment, the heat treatment method includes the following steps: normalizing, annealing, solution heat treatment, aging, solution treatment, aging treatment, quenching and tempering.
Optionally, in the step S2 and the ultracrystalline iron core treatment, the paint dipping treatment method includes the following steps: placing the ultracrystalline iron core in an industrial oven for pre-baking for 20-30min, completely immersing the taken ultracrystalline iron core in impregnating varnish for 15-25min, and taking out the immersed ultracrystalline iron core and dripping the immersed ultracrystalline iron core.
Optionally, the drying range of the industrial oven is 120-.
Optionally, in the step S3, in the drying, curing and forming, the model of the constant temperature drying oven is 101-00B, and the heating temperature is distributed in several stages, the pre-drying temperature is 80-120 ℃, the second-stage heating temperature is 160-.
The invention provides a solidification production process of an ultracrystalline iron core for a current transformer, which has the following beneficial effects:
the curing production process of the ultracrystalline iron core for the current transformer comprises the steps of taking epoxy resin pouring sealant as a raw material, mixing the raw material according to a proportion, uniformly stirring the mixture to obtain mixed glue solution, coating the ultracrystalline iron core after heat treatment and paint dipping, placing the iron core in a constant-temperature drying box, heating the iron core for curing and shaping, and then carrying out secondary curing by using a silicone grease transparent curing agent, so that the hardness of the iron core is obviously improved, the performance change of the transformer after pouring is reduced, the mounting of a protective box is replaced, and the cost is reduced.
Detailed Description
In the following, technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
Embodiment 1
The invention provides a technical scheme that: a solidification production process of an ultracrystalline iron core for a current transformer comprises the following steps:
s1, mixed configuration: taking epoxy resin pouring sealant as a raw material, mixing according to a ratio of 2:1, and uniformly stirring to obtain a mixed glue solution A;
s2, ultra-microcrystalline iron core treatment: sequentially carrying out heat treatment and paint dipping on the ultracrystalline iron core;
s3, drying, curing and molding: coating the mixed glue solution A in the step S1 on the surface of the ultracrystalline iron core in the step S2 and ultracrystalline iron core treatment, and placing the coated ultracrystalline iron core in a constant-temperature drying box for heating, curing and shaping;
s4, secondary curing: and in the step S3, drying, curing and forming, carrying out secondary curing on the cured and formed ultracrystalline iron core by using a silicone grease transparent curing agent.
In the invention: the epoxy resin pouring sealant comprises a group A and a group B which are stored separately, wherein the group A comprises an epoxy resin matrix, an active diluent, a toughening agent, a coupling agent, a defoaming agent and an antibacterial agent, and the epoxy resin pouring sealant comprises the following raw materials, by mass, 30 parts of the epoxy resin matrix, 2 parts of the active diluent, 2 parts of the coupling agent, 5 parts of the defoaming agent, 5 parts of the toughening agent and 1 part of the antibacterial agent; sequentially adding 30 parts of the epoxy resin matrix, 2 parts of an active diluent, 2 parts of a coupling agent, 5 parts of a defoaming agent, 5 parts of a toughening agent and 1 part of an antibacterial agent into a reaction kettle, and uniformly stirring; the group B comprises 50 parts of curing agent and 5 parts of curing accelerator by mass.
In the invention: step S2, in the ultracrystalline iron core treatment, the heat treatment method includes the steps of: normalizing, annealing, solution heat treatment, aging, solution treatment, aging treatment, quenching and tempering.
In the invention: step S2, in the ultracrystalline iron core treatment, the paint dipping treatment method comprises the following steps: placing the ultracrystalline iron core in an industrial oven for pre-baking for 20min, completely immersing the taken ultracrystalline iron core in impregnating varnish for 15min, and taking out the immersed ultracrystalline iron core and dripping to dry.
In the invention: the drying temperature of the industrial oven is 120 ℃.
In the invention: and S3, in the drying, curing and forming, the model of the constant-temperature drying oven is 101-00B, and the heating temperature is dispersed in multiple stages, wherein the pre-drying temperature is 80 ℃, the second-stage heating temperature is 120 ℃, and the final heating temperature is 160 ℃.
Example II
A solidification production process of an ultracrystalline iron core for a current transformer comprises the following steps:
s1, mixed configuration: taking epoxy resin pouring sealant as a raw material, mixing according to a ratio of 2:1, and uniformly stirring to obtain a mixed glue solution A;
s2, ultra-microcrystalline iron core treatment: sequentially carrying out heat treatment and paint dipping on the ultracrystalline iron core;
s3, drying, curing and molding: coating the mixed glue solution A in the step S1 on the surface of the ultracrystalline iron core in the step S2 and ultracrystalline iron core treatment, and placing the coated ultracrystalline iron core in a constant-temperature drying box for heating, curing and shaping;
s4, secondary curing: and in the step S3, drying, curing and forming, carrying out secondary curing on the cured and formed ultracrystalline iron core by using a silicone grease transparent curing agent.
In the invention: the epoxy resin pouring sealant comprises a group A and a group B which are stored separately, wherein the group A comprises an epoxy resin matrix, an active diluent, a toughening agent, a coupling agent, a defoaming agent and an antibacterial agent, and the epoxy resin pouring sealant comprises the following raw materials, by mass, 35 parts of the epoxy resin matrix, 4 parts of the active diluent, 4 parts of the coupling agent, 10 parts of the defoaming agent, 10 parts of the toughening agent and 2 parts of the antibacterial agent; sequentially adding 35 parts of the epoxy resin matrix, 4 parts of an active diluent, 4 parts of a coupling agent, 10 parts of a defoaming agent, 10 parts of a toughening agent and 2 parts of an antibacterial agent into a reaction kettle, and uniformly stirring; the group B comprises 55 parts of curing agent and 10 parts of curing accelerator by mass.
In the invention: step S2, in the ultracrystalline iron core treatment, the heat treatment method includes the steps of: normalizing, annealing, solution heat treatment, aging, solution treatment, aging treatment, quenching and tempering.
In the invention: step S2, in the ultracrystalline iron core treatment, the paint dipping treatment method comprises the following steps: placing the ultracrystalline iron core in an industrial oven for pre-baking for 25min, completely immersing the taken ultracrystalline iron core in impregnating varnish for 20min, and taking out the immersed ultracrystalline iron core and dripping to dry.
In the invention: the drying temperature of the industrial oven is 135 ℃.
In the invention: and S3, in the drying, curing and forming, the model of the constant-temperature drying oven is 101-00B, the heating temperature is dispersed in stages, the pre-drying temperature is 100 ℃, the second-stage heating temperature is 140 ℃, and the final heating temperature is 200 ℃.
Example three
A solidification production process of an ultracrystalline iron core for a current transformer comprises the following steps:
s1, mixed configuration: taking epoxy resin pouring sealant as a raw material, mixing according to a ratio of 2:1, and uniformly stirring to obtain a mixed glue solution A;
s2, ultra-microcrystalline iron core treatment: sequentially carrying out heat treatment and paint dipping on the ultracrystalline iron core;
s3, drying, curing and molding: coating the mixed glue solution A in the step S1 on the surface of the ultracrystalline iron core in the step S2 and ultracrystalline iron core treatment, and placing the coated ultracrystalline iron core in a constant-temperature drying box for heating, curing and shaping;
s4, secondary curing: and in the step S3, drying, curing and forming, carrying out secondary curing on the cured and formed ultracrystalline iron core by using a silicone grease transparent curing agent.
In the invention: the epoxy resin pouring sealant comprises a group A and a group B which are stored separately, wherein the group A comprises an epoxy resin matrix, an active diluent, a toughening agent, a coupling agent, a defoaming agent and an antibacterial agent, and the epoxy resin pouring sealant comprises the following raw materials, by mass, 40 parts of the epoxy resin matrix, 6 parts of the active diluent, 6 parts of the coupling agent, 15 parts of the defoaming agent, 15 parts of the toughening agent and 3 parts of the antibacterial agent; sequentially adding 40 parts of the epoxy resin matrix, 6 parts of an active diluent, 6 parts of a coupling agent, 15 parts of a defoaming agent, 15 parts of a toughening agent and 3 parts of an antibacterial agent into a reaction kettle, and uniformly stirring; the group B comprises a curing agent and a curing accelerator, wherein the curing agent comprises 60 parts by mass of raw materials and 15 parts by mass of the curing accelerator.
In the invention: step S2, in the ultracrystalline iron core treatment, the heat treatment method includes the steps of: normalizing, annealing, solution heat treatment, aging, solution treatment, aging treatment, quenching and tempering.
In the invention: step S2, in the ultracrystalline iron core treatment, the paint dipping treatment method comprises the following steps: placing the ultracrystalline iron core in an industrial oven for pre-baking for 30min, completely immersing the taken ultracrystalline iron core in impregnating varnish for 25min, and taking out the immersed ultracrystalline iron core and dripping to dry.
In the invention: the drying temperature of the industrial oven is 150 ℃.
In the invention: step S3, in the drying, curing and forming process, the model of the constant-temperature drying oven is 101-00B, the heating temperature is dispersed for a plurality of stages, the pre-drying temperature is 120 ℃, the two-stage heating temperature is 160 ℃, and the final heating temperature is 240 ℃.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. A solidification production process of an ultracrystalline iron core for a current transformer is characterized by comprising the following steps:
s1, mixed configuration: taking epoxy resin pouring sealant as a raw material, mixing according to a ratio of 2:1, and uniformly stirring to obtain a mixed glue solution A;
s2, ultra-microcrystalline iron core treatment: sequentially carrying out heat treatment and paint dipping on the ultracrystalline iron core;
s3, drying, curing and molding: coating the mixed glue solution A in the step S1 on the surface of the ultracrystalline iron core in the step S2 and ultracrystalline iron core treatment, and placing the coated ultracrystalline iron core in a constant-temperature drying box for heating, curing and shaping;
s4, secondary curing: and in the step S3, drying, curing and forming, carrying out secondary curing on the cured and formed ultracrystalline iron core by using a silicone grease transparent curing agent.
2. The curing production process of the ultracrystalline iron core for the current transformer as claimed in claim 1, wherein the epoxy resin pouring sealant comprises a group A and a group B which are separately stored, wherein the group A comprises an epoxy resin matrix, a reactive diluent, a toughening agent, a coupling agent, a defoaming agent and an antibacterial agent, and the epoxy resin pouring sealant comprises the following raw materials, by mass, 30-40 parts of the epoxy resin matrix, 2-6 parts of the reactive diluent, 2-6 parts of the coupling agent, 5-15 parts of the defoaming agent, 5-15 parts of the toughening agent and 1-3 parts of the antibacterial agent; sequentially adding 30-40 parts of the epoxy resin matrix, 2-6 parts of an active diluent, 2-6 parts of a coupling agent, 5-15 parts of a defoaming agent, 5-15 parts of a toughening agent and 1-3 parts of an antibacterial agent into a reaction kettle, and uniformly stirring; the group B comprises 50-60 parts of curing agent and 5-15 parts of curing accelerator by mass.
3. The process for solidifying and producing an ultra-microcrystalline iron core for a current transformer as claimed in claim 1, wherein the heat treatment method in the step S2 of treating the ultra-microcrystalline iron core comprises the following steps: normalizing, annealing, solution heat treatment, aging, solution treatment, aging treatment, quenching and tempering.
4. The process for curing and producing the ultra-microcrystalline iron core for the current transformer as claimed in claim 1, wherein the step S2, the ultra-microcrystalline iron core treatment, the dip coating treatment method comprises the following steps: placing the ultracrystalline iron core in an industrial oven for pre-baking for 20-30min, completely immersing the taken ultracrystalline iron core in impregnating varnish for 15-25min, and taking out the immersed ultracrystalline iron core and dripping the immersed ultracrystalline iron core.
5. The process for solidifying and producing the ultra-microcrystalline iron core for the current transformer as claimed in claim 4, wherein: the drying temperature of the industrial oven is 120-150 ℃.
6. The process for solidifying and producing the ultra-microcrystalline iron core for the current transformer as claimed in claim 1, wherein: in the step S3, in the drying, curing and forming process, the model number of the constant temperature drying box is 101-00B, and the heating temperature is distributed in several stages, wherein the pre-drying temperature is 80-120 ℃, the two-stage heating temperature is 160 ℃ plus the temperature, and the final heating temperature is 240 ℃ plus the temperature.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011039999.2A CN112151257A (en) | 2020-09-28 | 2020-09-28 | Solidification production process of ultracrystalline iron core for current transformer |
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| CN202011039999.2A CN112151257A (en) | 2020-09-28 | 2020-09-28 | Solidification production process of ultracrystalline iron core for current transformer |
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| CN202011039999.2A Pending CN112151257A (en) | 2020-09-28 | 2020-09-28 | Solidification production process of ultracrystalline iron core for current transformer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113035546A (en) * | 2021-03-01 | 2021-06-25 | 合肥合美电子技术有限公司 | Permalloy iron core dipping and curing process for CT electricity taking |
| CN113470964A (en) * | 2021-08-17 | 2021-10-01 | 安徽先锐软磁科技有限公司 | Solidification production process of ultracrystalline iron core for current transformer |
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