CN110581016B - Special curing agent for nanocrystalline iron core and nanocrystalline iron core curing device - Google Patents
Special curing agent for nanocrystalline iron core and nanocrystalline iron core curing device Download PDFInfo
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- CN110581016B CN110581016B CN201910946829.3A CN201910946829A CN110581016B CN 110581016 B CN110581016 B CN 110581016B CN 201910946829 A CN201910946829 A CN 201910946829A CN 110581016 B CN110581016 B CN 110581016B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/42—Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof
- C08G59/4207—Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof aliphatic
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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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Abstract
The invention discloses a nanocrystalline iron core curing device which comprises a base, wherein four sides of the base are symmetrically provided with four curing clamping mechanisms, the four curing clamping mechanisms clamp a crystal iron core together, and a main pipeline and a connecting pipeline are embedded in the base; the invention also discloses a special curing agent for the nanocrystalline iron core, which comprises epoxy resin, polyazelaic anhydride, polysebacic anhydride, long-chain aliphatic series dibasic acid polyanhydride, methylhexahydrophthalic anhydride and a catalyst. According to the invention, the clamping tightness of the inner clamping plate and the outer clamping plate is controlled by the telescopic rod to improve the uniformity and reliability of the crystal iron core during curing, the stress uniformity of the crystal iron core is increased by large-area clamping and fixing of the inner clamping plate and the outer clamping plate, the uniform distribution of a curing agent is ensured, the control is realized in a pneumatic or oil pressure control mode, the operation is simple, the electric energy consumption is not required, the use cost is reduced, the curing time is reduced by adding a catalyst, and the yield is increased.
Description
Technical Field
The invention relates to the field of electrical equipment manufacturing, in particular to a special curing agent for a nanocrystalline iron core and a nanocrystalline iron core curing device.
Background
The iron-based nanocrystalline alloy is an amorphous material formed by taking iron as a main component and adding a small amount of Nb, Cu, Si and B elements to the alloy through a rapid solidification process, and the amorphous material can obtain a microcrystalline structure after heat treatment to increase the magnetic property of the microcrystalline structure, so the iron-based nanocrystalline alloy is often used for manufacturing a nanocrystalline iron core.
The existing nanocrystalline iron core is mostly cured in a soaking mode during curing, the curing time is long, cracks are easily generated on the end face of the cured nanocrystalline iron core, the performance of the nanocrystalline iron core is affected, and the curing agent and the end face of the nanocrystalline iron core are not tightly connected due to soaking curing, so that the curing looseness can be generated after long-time use, and the use of the nanocrystalline iron core is affected.
Disclosure of Invention
The invention aims to solve the defects of long curing time, easy crack generation during soaking and curing and easy looseness after long-time use in the prior art, and provides a special curing agent for a nanocrystalline iron core and a nanocrystalline iron core curing device.
In order to achieve the purpose, the invention adopts the following technical scheme:
the nanocrystalline iron core curing device comprises a base, wherein four sides of the base are symmetrically provided with four curing clamping mechanisms which commonly clamp a crystal iron core, a main pipeline and a connecting pipeline are embedded in the base, and the side wall of the base is fixedly provided with a connector which is connected with the connecting pipeline;
the curing and clamping mechanism comprises two bottom edge supporting rods and a top edge supporting rod which are fixedly arranged on a base, the upper end of each bottom edge supporting rod is fixedly provided with a fixed seat, the upper end of each top edge supporting rod is fixedly provided with a supporting seat, the upper end surfaces of the two fixed seats and one supporting seat are jointly and fixedly provided with an inner clamping plate, and the side end of the inner clamping plate is slidably inserted with an outer clamping plate;
the inner clamping plate is supported on the base through a triangular supporting structure formed by the two bottom side supporting rods and the top point supporting rod, the stability of the inner clamping plate is guaranteed, the outer clamping plate is inserted on the inner clamping plate in a sliding mode, when the end face of the crystal iron core is placed on the inner clamping plate, the outer clamping plate is made to be close to the inner clamping plate through sliding of the outer clamping plate to clamp the crystal iron core, the crystal iron core can be fixed during solidification, and the phenomenon that the end face of the crystal iron core is uneven or cracks are generated due to movement during solidification is avoided;
telescopic rods are fixedly inserted into the fixing seats in parallel, the telescopic rods can be oil pressure telescopic rods or pneumatic telescopic rods, preferably pneumatic telescopic rods, and are relatively clean during curing, connecting pieces are symmetrically and fixedly installed at the bottom end of the outer clamping plate, and the telescopic ends of the two telescopic rods are fixedly installed on the connecting pieces;
the outer clamping plate slides on the inner clamping plate through the expansion and contraction of the telescopic rod, the manual rotary fixation of a knob is not needed, the contact between a user and the device and the crystal iron core is reduced, the influence of a curing agent with certain toxicity risk on the safety of the user is avoided, the clamping area of the inner clamping plate and the clamping area of the outer clamping plate are large, the clamping stability and the clamping uniformity of the crystal iron core are increased, the clamping degree of the inner clamping plate and the outer clamping plate is increased through the expansion and contraction degree of the telescopic rod, namely, the clamping is loose when the curing agent is just coated, the curing agent can conveniently flow and enter the end face gap of the crystal iron core, the curing firmness is increased, after the curing agent is completely coated and fully flows, namely, when the curing agent flows from the upper part to the lower part of the crystal iron core, the inner clamping plate and the outer clamping plate clamp the crystal iron core tightly and firmly, and redundant curing agent in the end face gap, the crack of the end face of the crystal iron core caused by the excessive curing agent after curing is avoided, and the curing quality of the crystal iron core is improved;
an output pipeline is fixedly inserted into each fixed seat, extends to the telescopic rod and is connected with the fixed end of the telescopic rod, a plurality of pipeline fixing sleeves are fixedly mounted on each bottom edge supporting rod, each output pipeline is fixedly inserted along the plurality of pipeline fixing sleeves on the corresponding bottom edge supporting rods, and the lower end of each output pipeline extends into the base and is connected with a main pipeline;
connect pneumatic means on the connector and make high-pressure gas get into connecting tube, high-pressure gas gets into in the main line in the connecting tube, high-pressure gas expands the action in getting into a plurality of telescopic links simultaneously from a plurality of output tube in the main line, when starting drive bled, high-pressure gas in the telescopic link passes through output tube, main line and connecting tube are taken out for be the negative pressure in the telescopic link, then the telescopic link shrink, the outer grip block removes to the interior grip block and presss from both sides tight crystal core promptly.
A special curing agent for a nanocrystalline iron core used in cooperation with a nanocrystalline iron core curing device comprises:
100 parts of epoxy resin, 5-10 parts of polyazelaic anhydride, 5-10 parts of polysebacic anhydride, 10-30 parts of long-chain aliphatic series dibasic acid polyanhydride, 30-40 parts of methyl hexahydrophthalic anhydride and 3-5 parts of catalyst.
Preferably, the catalyst is an amine substance, including N, N-dimethylcyclohexylamine and tertiary amine;
polynonane diacid anhydride and polysebacic acid anhydride are easy to mix with resin, the pot life is long, the electrical insulation performance and the mechanical performance under medium-temperature curing are excellent, certain toughness is achieved, the thermal shock resistance is good, N, N-dimethylcyclohexylamine can accelerate the curing of the polyanonane diacid anhydride and the polysebacic acid anhydride, the curing speed of the long-chain aliphatic diacid polyanhydride is low, when tertiary amine is used as an accelerant, the gelation time is about 1 hour at 140 ℃, the glass transition temperature of a cured product is low, the flexibility is large, the thermal shock resistance is excellent, the electrical insulation performance and the water resistance are also excellent, the mechanical strength of the cured curing agent can be increased by mixing the methylhexahydrophthalic anhydride, the impact resistance of a crystal iron core is increased, and the toughness, the thermal shock resistance and the electrical insulation performance of epoxy resin curing;
100 parts of epoxy resin, 5-10 parts of polyazelaic anhydride, 5-10 parts of polysebacic anhydride, 10-30 parts of long-chain aliphatic dibasic acid polyanhydride, 30-40 parts of methylhexahydrophthalic anhydride, 3-5 parts of N, N-dimethylcyclohexylamine and tertiary amine are fully mixed and evenly coated on the upper end face of the crystal iron core, the crystal iron core is naturally air-dried for 1 hour, and then the crystal iron core is taken down from the device and is placed in a heat preservation box to be dried for 1-2 hours at the temperature of 140 ℃.
The invention has the following beneficial effects:
1. grip block and outer grip block centre gripping crystal core in through the telescopic link control for crystal core is the lax state when paining the curing agent, only guarantee paint can not remove crystal core can, be convenient for the curing agent permeates completely in the gap of crystal core terminal surface, increase the homogeneity of solidification, and paint even back clamp tightly crystal core, make unnecessary curing agent in the gap extruded, avoid in the gap more curing agent to lead to crystal core fracture after the solidification, not hard up etc, the reliability of device to crystal core solidification has been increased.
2. The curing clamping mechanism clamps the inner side and the outer side of the crystal iron core through the inner clamping plate and the outer clamping plate, and the clamping area of the inner clamping plate and the clamping area of the outer clamping plate are large, so that the clamping force of the inner clamping plate and the clamping force of the outer clamping plate are uniform during the crystal iron core process, the curing agent can be guaranteed to uniformly flow in the end face gap of the crystal iron core, and the end face of the cured crystal iron core is neat and uniform in thickness.
3. Connect external oil pressure device or starting drive from connector department, and the mode that adopts pneumatics or oil pressure can be comparatively accurate control telescopic link's amount of movement, and control operation is simple, need not to use electrical equipment to control, does not consume the electric energy, reduces the use cost of device.
4. The acid anhydride substance and the epoxy resin are used as the curing agent, so that the toughness, the electrical insulation property and the heat resistance after curing are improved, the performance of the crystal iron core can be improved, the curing speed of the curing agent can be increased by the catalyst, the curing time is shortened, and the yield is increased.
In conclusion, the invention improves the uniformity and reliability of the crystal iron core during curing by controlling the clamping tightness of the inner clamping plate and the outer clamping plate through the telescopic rod, increases the stress uniformity of the crystal iron core by clamping and fixing the inner clamping plate and the outer clamping plate in a large area, ensures the uniform distribution of the curing agent, is controlled by a pneumatic or oil pressure control mode, has simple operation, does not need to consume electric energy, reduces the use cost, reduces the curing time by adding a catalyst, and increases the yield.
Drawings
Fig. 1 is a top view of a nano-crystalline iron core solidifying apparatus according to the present invention;
fig. 2 is a schematic structural diagram of a nanocrystalline iron core curing device according to the present invention;
fig. 3 is a partially enlarged view of a solidifying and clamping mechanism of the nano-crystalline iron core solidifying device provided by the invention.
In the figure: the device comprises a base 1, a curing clamping mechanism 2, a crystal iron core 3, an output pipeline 4, a pipeline fixing sleeve 5, a main pipeline 6, a connecting pipeline 7, a connector 8, a vertex supporting rod 201, a bottom supporting rod 202, a fixing seat 203, a supporting seat 204, an inner clamping plate 205, an outer clamping plate 206, a telescopic rod 207 and a connecting piece 208.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-3, the nanocrystalline iron core curing device comprises a base 1, four curing clamping mechanisms are symmetrically arranged on four sides of the base 1, the four curing clamping mechanisms jointly clamp a crystal iron core 3, a main pipeline 6 and a connecting pipeline 7 are embedded in the base 1, a connector 8 is fixedly arranged on the side wall of the base 1, and the connector 8 is connected with the connecting pipeline 7;
the curing and clamping mechanism comprises two bottom edge support rods 202 and a top edge support rod 201 which are fixedly arranged on the base 1, the upper end of each bottom edge support rod 202 is fixedly provided with a fixed seat 203, the upper end of each top edge support rod 201 is fixedly provided with a supporting seat 204, the upper end surfaces of the two fixed seats 203 and the supporting seat 204 are jointly and fixedly provided with an inner clamping plate 205, and the side end of the inner clamping plate 205 is slidably inserted with an outer clamping plate 206;
the inner clamping plate 205 is supported on the base 1 through a triangular supporting structure formed by two bottom side supporting rods 202 and one top point supporting rod 201, the stability of the inner clamping plate 205 is ensured, the outer clamping plate 206 is inserted on the inner clamping plate 205 in a sliding manner, when the end face of the crystal iron core 3 is placed on the inner clamping plate 205, the outer clamping plate 206 is made to be close to the inner clamping plate 205 to clamp the crystal iron core 3 through sliding the outer clamping plate 206, so that the crystal iron core 3 can be fixed during curing, and the phenomenon that the end face of the crystal iron core 3 is irregular or cracks are generated on the end face due to movement during curing is avoided;
the outer clamping plate 206 slides on the inner clamping plate 205 through the extension and retraction of the telescopic rod 207, the manual rotation and fixation of a knob are not needed, the contact between a user and the crystal iron core 3 is reduced, the influence of a curing agent with certain toxicity risk on the safety of the user is avoided, the clamping area of the inner clamping plate 205 and the outer clamping plate 206 is large, the clamping stability and the clamping uniformity of the crystal iron core 3 at each position are increased, the clamping degree of the inner clamping plate 205 and the outer clamping plate 206 is enabled through the extension and retraction degree of the telescopic rod 207, namely, the clamping is loose when the curing agent is just coated, the curing agent can conveniently flow and enter the end face gap of the crystal iron core 3, the curing firmness is increased, after the curing agent is completely coated and fully flows, namely, when the curing agent flows from the upper side to the lower side of the crystal iron core 3, the inner clamping plate 205 and the outer clamping plate 206 firmly clamp the crystal iron core 3 through the control, redundant curing agents in the end face gap of the compact crystal iron core 3 are extruded out, so that the end face of the crystal iron core 3 is prevented from generating cracks due to the redundant curing agents after curing, and the curing quality of the crystal iron core 3 is improved;
an output pipeline 4 is fixedly inserted into each fixed seat 203, the output pipeline 4 extends to the telescopic rod 207 and is connected with the fixed end of the telescopic rod 207, a plurality of pipeline fixing sleeves 5 are fixedly mounted on each bottom edge support rod 202, each output pipeline 4 is inserted and fixed along the plurality of pipeline fixing sleeves 5 corresponding to the bottom edge support rods 202, and the lower end of each output pipeline 4 extends into the base 1 and is connected with the main pipeline 6;
connect pneumatic means on connector 8 and make high-pressure gas get into connecting tube 7, high-pressure gas gets into in main line 6 in connecting tube 7, high-pressure gas expands the action in getting into a plurality of telescopic links 207 simultaneously from a plurality of output tube 4 in main line 6, when starting drive bleeds, high-pressure gas in the telescopic link 207 passes through output tube 4, main line 6 and connecting tube 7 are taken out, be the negative pressure in the telescopic link 207, then telescopic link 207 contracts, outer grip block 206 removes to the interior grip block 205 and presss from both sides tight crystal core 3 promptly.
A special curing agent for a nanocrystalline iron core used in cooperation with a nanocrystalline iron core curing device comprises:
100 parts of epoxy resin, 5-10 parts of polyazelaic anhydride, 5-10 parts of polysebacic anhydride, 10-30 parts of long-chain aliphatic series dibasic acid polyanhydride, 30-40 parts of methyl hexahydrophthalic anhydride and 3-5 parts of catalyst.
The catalyst is amine substance, including N, N-dimethyl cyclohexylamine and tertiary amine;
polynonane diacid anhydride and polysebacic acid anhydride are easy to mix with resin, the pot life is long, the electrical insulation performance and the mechanical performance under medium-temperature curing are excellent, certain toughness is achieved, the thermal shock resistance is good, N, N-dimethylcyclohexylamine can accelerate the curing of the polyanonane diacid anhydride and the polysebacic acid anhydride, the curing speed of the long-chain aliphatic diacid polyanhydride is low, when tertiary amine is used as an accelerant, the gelation time is about 1 hour at 140 ℃, the glass transition temperature of a cured product is low, the flexibility is large, the thermal shock resistance is excellent, the electrical insulation performance and the water resistance are also excellent, the mechanical strength of the cured curing agent can be increased by mixing the methylhexahydrophthalic anhydride, the impact resistance of the crystal iron core 3 is increased, and the toughness, the thermal shock resistance and the electrical insulation performance of epoxy resin curing;
100 parts of epoxy resin, 5-10 parts of polyazelaic anhydride, 5-10 parts of polysebacic anhydride, 10-30 parts of long-chain aliphatic dibasic acid polyanhydride, 30-40 parts of methylhexahydrophthalic anhydride, 3-5 parts of N, N-dimethylcyclohexylamine and tertiary amine are fully mixed and evenly coated on the upper end face of the crystal iron core 3, the mixture is naturally air-dried for 1 hour, and then the crystal iron core 3 is taken down from the device and is placed in an incubator to be dried for 1-2 hours at the temperature of 140 ℃.
When the invention is used, high-pressure gas is input into the connector 8, so that the high-pressure gas is led to the main pipeline 6 along the connecting pipeline 7, then enters the plurality of output pipelines 4 and enters the plurality of telescopic rods 207, the telescopic ends of the telescopic rods 207 are extended, the outer clamping plates 206 which fix the telescopic ends of the telescopic rods 207 through the connecting sheets 208 are pushed open by the telescopic rods 207, namely, the distance between the inner clamping plates 205 and the outer clamping plates 206 is increased, then the four sides of the crystal iron core 3 are placed on the four inner clamping plates 205, then air is pumped at the connector 8, so that the high-pressure gas in the telescopic rods 207 is discharged along the output pipelines 4, the main pipeline 6 and the connecting pipeline 7, the telescopic ends of the telescopic rods 207 are contracted, the outer clamping plates 206 which fix the telescopic ends of the telescopic rods 207 through the connecting sheets 208 are pulled by the telescopic rods 207, so that the outer clamping plates 206 move towards the inner clamping plates 205 and clamp the crystal iron core 3, and, ensuring that the crystal iron core 3 can not move;
then, 100 parts of epoxy resin, 5-10 parts of polyazelaic anhydride, 5-10 parts of polysebacic anhydride, 10-30 parts of long-chain aliphatic dibasic acid polyanhydride, 30-40 parts of methylhexahydrophthalic anhydride, 3-5 parts of N, N-dimethylcyclohexylamine and tertiary amine are fully mixed and evenly coated on the upper end face of the crystal iron core 3, the curing agent solution formed by mixing flows downwards under the influence of gravity, the crystal iron core 3 is clamped by the inner clamping plate 205 and the outer clamping plate 206 loosely, and the curing agent solution flows down along the end face gap of the crystal iron core 3 and fills the whole gap;
and then, continuously extracting gas through the connector 8 to enable the telescopic rod 207 to further contract, firmly clamping the crystal iron core 3 by the outer clamping plate 206 and the inner clamping plate 205, extruding redundant curing agent solution in the gap of the end face of the crystal iron core 3, keeping the state for naturally air-drying for 1 hour, taking out the crystal iron core 3 with the solidified curing agent, and putting the crystal iron core 3 into a heat preservation box at 140 ℃ for high-temperature baking for 1-2 hours to finish the curing of the crystal iron core 3, wherein the end face of the crystal iron core 3 after being cured does not generate cracks due to the extrusion of the redundant curing agent solution, is neat in end face and has strong electrical insulation.
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 (3)
1. The nanocrystalline iron core curing device comprises a base (1) and is characterized in that four sides of the base (1) are symmetrically provided with four curing clamping mechanisms (2), the four curing clamping mechanisms jointly clamp a crystal iron core (3), a main pipeline (6) and a connecting pipeline (7) are embedded into the base (1), the side wall of the base (1) is fixedly provided with a connector (8), and the connector (8) is connected with the connecting pipeline (7);
the curing clamping mechanism (2) comprises two bottom edge supporting rods (202) and a top point supporting rod (201) which are fixedly arranged on a base (1), the upper end of each bottom edge supporting rod (202) is fixedly provided with a fixed seat (203), the upper end of each top point supporting rod (201) is fixedly provided with a supporting seat (204), the upper end surfaces of the two fixed seats (203) and the supporting seat (204) are fixedly provided with an inner clamping plate (205) together, and the side end of the inner clamping plate (205) is slidably inserted with an outer clamping plate (206);
telescopic rods (207) are fixedly inserted into each fixing seat (203) in parallel, connecting pieces (208) are symmetrically and fixedly installed at the bottom end of the outer clamping plate (206), and the telescopic ends of the two telescopic rods (207) are fixedly installed on the connecting pieces (208);
every all fixed the inserting is equipped with output pipeline (4) on fixing base (203), and output pipeline (4) extend to telescopic link (207) and connect the stiff end of telescopic link (207), every equal fixed mounting has the fixed cover of a plurality of pipelines (5) on base bracing piece (202), every output pipeline (4) are fixed along the fixed cover of a plurality of pipelines (5) interlude on corresponding base bracing piece (202), every the lower extreme of output pipeline (4) all extends to in base (1) and is connected with main line (6).
2. A nanocrystalline iron core-dedicated curing agent for use with the nanocrystalline iron core-curing device of claim 1, comprising:
100 parts of epoxy resin, 5-10 parts of polyazelaic anhydride, 5-10 parts of polysebacic anhydride, 10-30 parts of long-chain aliphatic dibasic acid polyanhydride, 30-40 parts of methylhexahydrophthalic anhydride and 3-5 parts of catalyst, wherein the epoxy resin, the polyazelaic anhydride, the polysebacic anhydride and the catalyst are uniformly mixed and then used for being coated on the upper end face of the crystal iron core and flowing into end face gaps under the action of gravity and being filled.
3. The special curing agent for the nanocrystalline iron core according to claim 2, wherein the catalyst is an amine substance comprising N, N-dimethylcyclohexylamine and tertiary amine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910946829.3A CN110581016B (en) | 2019-10-07 | 2019-10-07 | Special curing agent for nanocrystalline iron core and nanocrystalline iron core curing device |
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| CN113724984B (en) * | 2021-08-02 | 2023-11-21 | 新昌县新明实业有限公司 | Horizontal progressive curing equipment for iron core column and iron core of dry type transformer |
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| CN110581016A (en) | 2019-12-17 |
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