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CN-122025351-A - Non-magnetic tungsten steel magnetic material orientation coil and preparation method thereof

CN122025351ACN 122025351 ACN122025351 ACN 122025351ACN-122025351-A

Abstract

The invention relates to the technical field of orientation coils, and discloses a non-magnetic tungsten steel magnetic material orientation coil and a preparation method thereof, comprising a protective shell and a sealant cover arranged inside the protective shell, wherein a tungsten steel core body is penetrated inside the sealant cover, a magnetic field coil is wound around the tungsten steel core body, the utility model discloses a tungsten steel core, including tungsten steel core, protective housing, sealed glue lid, tungsten steel core, the protective housing is run through to magnetic field coil one end, sealed glue lid has two, and magnetic field coil sets up at two sealed glue lid intermediate positions, tungsten steel core both ends respectively with two sealed glue lid fixed connection, form confined placing cavity. According to the non-magnetic tungsten steel magnetic material orientation coil, the two sealing glue covers are used for sealing the magnetic field coil and the tungsten steel core body to form a closed placing cavity, direct contact between the magnetic field coil and an external environment is isolated, the tungsten steel core body can utilize the non-magnetic characteristic of the tungsten steel core body to avoid magnetic interference to the magnetic field coil, and the accuracy of magnetic field orientation is further improved.

Inventors

  • PAN MINGLI

Assignees

  • 慈溪市能力磁材有限公司

Dates

Publication Date
20260512
Application Date
20260402

Claims (10)

  1. 1. The non-magnetic tungsten steel magnetic material orientation coil comprises a protective shell (1) and a sealing glue cover (2) arranged in the protective shell (1), and is characterized in that a tungsten steel core body (3) is arranged in the sealing glue cover (2) in a penetrating mode, a magnetic field coil (4) is wound on the periphery of the tungsten steel core body (3), one end of the magnetic field coil (4) penetrates through the protective shell (1), two sealing glue covers (2) are arranged, the magnetic field coil (4) is arranged in the middle position of the two sealing glue covers (2), and two ends of the tungsten steel core body (3) are fixedly connected with the two sealing glue covers (2) respectively to form a closed placing cavity; The utility model discloses a cooling cavity, including casing (1), sealed glue lid (2) below and be provided with communicating pipe (103), communicating pipe (103) are "匚" shape, the horizontal segment of communicating pipe (103) wears to establish inside sealed glue lid (2), the vertical section of communicating pipe (103) wears to establish inside magnetic field coil (4), and is mutually perpendicular with magnetic field coil (4), the both ends of communicating pipe (103) are all worn to establish inside cooling cavity (101).
  2. 2. The non-magnetic tungsten steel magnetic material orientation coil according to claim 1, wherein a heat dissipation plate (102) is further fixed on the inner wall of the cooling cavity (101), a flow disturbing groove (105) is formed in the surface of the heat dissipation plate (102), the flow disturbing groove (105) is uniformly arranged on the surface of the heat dissipation plate (102) in a ring shape, and the heat dissipation plate (102) is any one of an arc shape, a wave shape and a spiral shape.
  3. 3. The non-magnetic tungsten steel magnetic material orientation coil of claim 1, wherein the inner wall of the protective housing (1) is further fixed with a heat conducting rib plate (104), the side surface of the heat conducting rib plate (104) is attached to the magnetic field coil (4), an embedded groove (201) matched with the heat conducting rib plate (104) is formed in the lower surface of the sealing glue cover (2), the upper end and the lower end of the heat conducting rib plate (104) are respectively arranged inside the embedded groove (201) in a penetrating mode, and the heat conducting rib plate (104) and the communicating pipe (103) are arranged in a staggered mode.
  4. 4. The non-magnetic tungsten steel magnetic material orientation coil according to claim 1, wherein an installation groove (202) is formed in the sealing glue cover (2), the horizontal section of the communicating pipe (103) is arranged in the installation groove (202) in a penetrating mode, the side face of the sealing glue cover (2) is tightly attached to the protective shell (1), and heat conduction silicone grease is filled between the inner wall of the installation groove (202) and the horizontal section of the communicating pipe (103).
  5. 5. The non-magnetic tungsten steel magnetic material orientation coil according to claim 1, wherein a fixing groove (106) is formed in the protective shell (1), the leading-out end of the magnetic field coil (4) penetrates through the fixing groove (106) and extends to the outside of the protective shell (1), and high-temperature-resistant sealant is filled in the fixing groove (106).
  6. 6. The non-magnetic tungsten steel magnetic material orientation coil according to claim 5, wherein a water inlet hole (107) is further formed in the side face of the protective shell (1), a water inlet pipe (5) is arranged in the water inlet hole (107) in a penetrating mode, one end of the water inlet pipe (5) is communicated with the cooling cavity (101), a corresponding water draining hole is further formed in one side of the water inlet hole (107), and the water inlet hole (107) and the water draining hole are symmetrically arranged on two sides of the fixing groove (106).
  7. 7. A method for preparing a non-magnetic tungsten steel magnetic material orientation coil, which is applied to the non-magnetic tungsten steel magnetic material orientation coil according to any one of claims 1 to 6, and is characterized by comprising the following steps: prefabricating a core coil assembly, winding a magnetic field coil (4) around the periphery of a tungsten steel core (3), and fixedly connecting two ends of the wound tungsten steel core (3) with two sealing glue covers (2) respectively, so that the magnetic field coil (4) is packaged between the two sealing glue covers (2) to form a closed placing cavity, thereby preparing the core coil assembly; The method comprises the steps of preassembling a heat conduction and cooling structure, respectively embedding the upper end and the lower end of a heat conduction rib plate (104) into embedded grooves (201) of two sealing glue covers (2), enabling the side surface of the heat conduction rib plate (104) to be tightly attached to the outer peripheral surface of a magnetic field coil (4), penetrating the horizontal section of a communicating pipe (103) into an installation groove (202) of the sealing glue cover (2), filling heat conduction silicone grease into a gap between the inner wall of the installation groove (202) and the horizontal section of the communicating pipe (103), and enabling the vertical section of the communicating pipe (103) to penetrate into the magnetic field coil (4) and be perpendicular to the magnetic field coil (4); Step three, assembling a shell, namely installing the preassembled core coil assembly into the protective shell (1), enabling two ends of a communicating pipe (103) to extend into a cooling cavity (101) of the protective shell (1), fixing a heat radiation plate (102) on the inner wall of the cooling cavity (101), and enabling a turbulent flow groove (105) on the surface of the heat radiation plate (102) to face the flow channel direction of the cooling cavity (101); And fourthly, sealing and interface molding, wherein the leading-out end of the magnetic field coil (4) passes through a fixed groove (106) of the protective shell (1), high-temperature resistant sealant is filled in the fixed groove (106), the water inlet pipe (5) passes into a water inlet hole (107) of the protective shell (1), one end of the water inlet pipe (5) is communicated with the cooling cavity (101), and a drain pipe is arranged in a drain hole at the opposite side of the water inlet hole (107), so that the preparation of the non-magnetic tungsten steel magnetic material oriented coil is completed.
  8. 8. The method according to claim 7, wherein in the first step, the tungsten steel core (3) is formed by processing nonmagnetic tungsten steel, the magnetic field coil (4) is uniformly and densely wound along the axial direction of the tungsten steel core (3) by adopting high-temperature-resistant enameled wires, the periphery of the magnetic field coil (4) is subjected to insulating varnish dipping treatment after winding is completed, and the two sealant covers (2) and the end parts of the tungsten steel core (3) are fixed by injection molding.
  9. 9. The preparation method of the heat-conducting plate (102) is characterized in that in the second step, a plurality of groups of heat-conducting rib plates (104) are uniformly distributed along the circumferential direction of the magnetic field coil (4), the heat-conducting rib plates (104) and the communicating pipes (103) are arranged in a staggered mode along the axial direction of the magnetic field coil (4), in the third step, the heat-radiating plate (102) and the inner wall of the cooling cavity (101) are fixed through welding, the heat-radiating plate (102) adopts an arc-shaped, wave-shaped or spiral structure, the turbulent flow grooves (105) are formed on the surface of the heat-radiating plate (102) through stamping, and the distance between the adjacent turbulent flow grooves (105) is kept consistent.
  10. 10. The method according to claim 7, wherein in the fourth step, the high temperature resistant sealant is made of silicone or polyimide, the fixing groove (106) is cured at normal temperature after filling, the joints of the water inlet pipe (5) and the water inlet hole (107) and the joints of the water outlet pipe and the water outlet hole are welded and sealed, and the hydraulic tightness test is performed on the inside of the cooling cavity (101) and the communicating pipe (103) after assembling.

Description

Non-magnetic tungsten steel magnetic material orientation coil and preparation method thereof Technical Field The invention relates to the technical field of orientation coils, in particular to a non-magnetic tungsten steel magnetic material orientation coil and a preparation method thereof. Background The magnetic material needs to be oriented through an orientation magnetic field coil in the magnetizing process, so that the magnetic material can generate a definite magnetic pole direction after being magnetized, in the related technology, the injection molding orientation magnetic field coil comprises a winding framework and a coil, the coil surrounds the periphery of the winding framework and is electrically connected with an external power supply, when the power supply is connected, a certain magnetic field is formed by winding, when the magnetic material passes through a coil central magnetic field, an internal magnetic field can be influenced by an external magnetic field, and therefore orientation of the magnetic material is completed, however, when the magnetic field coil performs orientation work, heat can be generated after current passes through the coil, when the heat is high, the coil can age, and the service life of the orientation magnetic field coil is not beneficial to being prolonged. The prior patent (publication number: CN 222300397U) discloses a water-cooled injection molding orientation magnetic field coil, which comprises a winding framework and a coil pack, wherein the winding framework is annularly arranged, a water cooling channel is formed in the winding framework, cooling liquid is circularly flowed in the water cooling channel, the coil pack is arranged in the water cooling channel, the coil pack radially surrounds the winding framework, and the coil pack is connected with an external power supply and is used for generating a magnetic field. The method can reduce the probability of rapid aging of the coil due to heating, so that the service life of the oriented magnetic field coil is prolonged, but the magnetic field coil is directly contacted with cooling liquid, the cooling liquid directly washes the enameled wire for a long time, an insulating layer is possibly corroded, turn-to-turn short circuit or insulation failure to ground is caused, electrical faults are caused, and ions or impurities in the cooling liquid possibly cause electrochemical corrosion, so that aging of a coil conductor is accelerated. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a non-magnetic tungsten steel magnetic material orientation coil and a preparation method thereof, which solve the problems that in the prior art, the orientation magnetic field coil is directly contacted with cooling liquid for cooling, which may cause corrosion of an insulating layer, cause electrical faults and accelerate aging of a coil conductor. The invention provides a non-magnetic tungsten steel magnetic material orientation coil which comprises a protective shell and a sealing glue cover arranged in the protective shell, wherein a tungsten steel core body penetrates through the sealing glue cover, a magnetic field coil is wound around the tungsten steel core body, one end of the magnetic field coil penetrates through the protective shell, two sealing glue covers are arranged at the middle positions of the two sealing glue covers, and two ends of the tungsten steel core body are fixedly connected with the two sealing glue covers respectively to form a closed placing cavity. The cooling cavity has been seted up to the inside protective housing, sealed gluey lid below is provided with communicating pipe, communicating pipe is "匚" shape, the horizontal segment of communicating pipe wears to establish inside sealed gluey lid, the vertical section of communicating pipe wears to establish inside magnetic field coil, and is mutually perpendicular with magnetic field coil, the both ends of communicating pipe are all worn to establish inside the cooling cavity. Further, the cooling cavity inner wall is still fixed with the heating panel, the cooling panel surface has seted up the vortex groove, the vortex groove is annular evenly to set up on the cooling panel surface, the cooling panel is any one of arc, wave or heliciform. Further, the protective housing inner wall still is fixed with the heat conduction floor, heat conduction floor side is laminated mutually with magnetic field coil, sealed glue cover lower surface offered with the embedded groove of heat conduction floor looks adaptation, heat conduction floor upper and lower extreme all wears to establish inside the embedded groove, heat conduction floor and communicating pipe crisscross setting. Further, the mounting groove has been seted up to sealed inside of gluing the lid, the horizontal segment of communicating pipe wears to establish inside the mounting groove, sealed side of gluing the lid is closely laminated with the protective