CN111086095A - Embedded spherical male die for permanent magnetic ferrite magnetic shoe wet-pressing magnetic field forming die - Google Patents
Embedded spherical male die for permanent magnetic ferrite magnetic shoe wet-pressing magnetic field forming die Download PDFInfo
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- CN111086095A CN111086095A CN201911378958.3A CN201911378958A CN111086095A CN 111086095 A CN111086095 A CN 111086095A CN 201911378958 A CN201911378958 A CN 201911378958A CN 111086095 A CN111086095 A CN 111086095A
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- Prior art keywords
- spherical
- male die
- magnetic
- magnetic field
- embedded
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- 238000003825 pressing Methods 0.000 title claims abstract description 33
- 229910000859 α-Fe Inorganic materials 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000002347 injection Methods 0.000 claims abstract description 19
- 239000007924 injection Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 12
- 239000000758 substrate Substances 0.000 claims abstract description 9
- 239000002002 slurry Substances 0.000 claims description 30
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 18
- 238000010521 absorption reaction Methods 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000000696 magnetic material Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0029—Moulds or moulding surfaces not covered by B28B7/0058 - B28B7/36 and B28B7/40 - B28B7/465, e.g. moulds assembled from several parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
Abstract
The invention discloses a spherical embedded male die for a permanent magnetic ferrite magnetic shoe wet-pressing magnetic field forming die, which comprises a male die fixing plate, a water outlet hole, a base body, an embedded layer, an aspherical surface, an end surface, a top surface and a material injection hole; the bottom end of the base body is provided with a male die fixing plate, and the lower surface of the male die fixing plate is provided with a water outlet hole; the upper surface of the base body is provided with an anti-spherical surface, an embedding layer is arranged above the anti-spherical surface, and the upper surface of the embedding layer is a spherical surface; the two ends of the substrate are intersected with the spherical surfaces to form end surfaces; a top surface is arranged above the spherical surface, and an end surface is arranged outside the top surface; the upper surface of the top surface is provided with a material injection hole; the lower surface of the embedding layer is provided with a spherical surface, and the lower surface of the embedding layer is matched with the spherical surface; the water outlet hole penetrates through the male die fixing plate and extends into the base body from the bottom end of the base body. The invention has the characteristics of strong capability of enabling the magnetic lines of force to tend to be parallel in the vertical direction and reducing the extreme difference between the upper surface and the lower surface of a product.
Description
Technical Field
The invention relates to an embedded spherical male die for a permanent magnetic ferrite magnetic shoe wet-pressing magnetic field forming die, in particular to an embedded spherical male die for a permanent magnetic ferrite magnetic shoe wet-pressing magnetic field forming die, which has the advantages of enabling magnetic lines of force to be parallel in the vertical direction and reducing the extreme difference of the upper surface and the lower surface of a product.
Background
At present, the production of magnetic material ferrite adopts an automatic injection mold which mainly comprises a water absorption plate, a female mold and a male mold, wherein a magnetizing coil is arranged above the water absorption plate, the magnetizing coil is magnetized when a press presses, and a closed magnetic field is formed by a magnetic line of force through the water absorption plate, the male mold, the magnetizing coil and the press.
Usually, the male die is embedded with a non-magnetic material in an arc or plane shape, so that the direction of a magnetic field is changed, and the range of products is reduced. However, the arc or plane inlaid non-magnetic conductive material has a limited ability to change the direction of the magnetic field, and cannot meet the requirement of reducing the range.
Disclosure of Invention
The invention aims to provide the embedded spherical male die for the permanent magnetic ferrite magnetic shoe wet-pressing magnetic field forming die, which has the advantages of enabling magnetic lines of force to be approximately parallel in the vertical direction and reducing the extreme difference between the upper surface and the lower surface of a product.
The purpose of the invention can be realized by the following technical scheme:
a spherical embedded male die for a permanent magnetic ferrite magnetic shoe wet-pressing magnetic field forming die comprises a male die fixing plate, a water outlet hole, a base body, an embedded layer, an aspherical surface, an end surface, a top surface and a material injection hole;
the bottom end of the base body is provided with a male die fixing plate, and the lower surface of the male die fixing plate is provided with a water outlet hole;
the upper surface of the base body is provided with an anti-spherical surface, an embedding layer is arranged above the anti-spherical surface, and the upper surface of the embedding layer is a spherical surface; the two ends of the substrate are intersected with the spherical surfaces to form end surfaces; a top surface is arranged above the spherical surface, and an end surface is arranged outside the top surface; the upper surface of the top surface is provided with a material injection hole;
the lower surface of the embedding layer is provided with a spherical surface, and the lower surface of the embedding layer is matched with the spherical surface;
the water outlet hole penetrates through the male die fixing plate and extends into the base body from the bottom end of the base body;
the matrix is made of strong magnetic pure iron;
the embedded layer is made of weak magnetic materials;
the thickness of the embedding layer is 1.5-15 mm;
the center of the embedding layer is thick, and the edge of the embedding layer is thin; the thickness of the central line part of the embedding layer is 5-15 mm; the edge thickness of the embedding layer is 1.5-4 mm; the thickness of the mosaic layer gradually transits from the central line to the edge;
the use method of the male die comprises the following steps:
firstly, presintering iron oxide at high temperature once, crushing the iron oxide into particles of 5-8 um by a dry ball mill, then grinding the particles, mixed with water and the iron oxide of steel balls by a wet ball mill to slurry of 0.8-1.2 um, and controlling the water content of the slurry to be 35% by a settling tower;
injecting the slurry into the automatic injection mold through the injection hole;
the automatic material injection mold comprises a water absorption plate, a female mold and a male mold; a magnetizing coil is arranged above the water absorption plate, and is magnetized in the pressing process of the press, and a closed magnetic field is formed by a magnetic line of force through the water absorption plate, the male die, the magnetizing coil and the press;
pressing the slurry by a hydraulic machine through a male die and a female die matched with the male die, magnetizing a magnetizing coil outside the male die, and generating a magnetic field by the magnetizing coil; under the action of a magnetic field, the slurry changes the direction of a magnetic force line through the spherical embedding layer, so that the slurry is oriented under the action of the magnetic field and is magnetized in the vertical direction;
step four, under the high pressure of pressing, the slurry forms the green body; and sintering and grinding the green blank to prepare the permanent magnetic ferrite product.
The invention provides a spherical male die for a permanent magnetic ferrite magnetic shoe wet-pressing magnetic field forming die, which has the characteristics of enabling magnetic lines of force to tend to be parallel in the vertical direction and reducing the extreme difference of the upper surface and the lower surface of a product. The invention has the beneficial effects that: pressing the slurry by a hydraulic machine through a male die and a female die matched with the male die, magnetizing a magnetizing coil outside the male die, and generating a magnetic field by the magnetizing coil; under the action of a magnetic field, the slurry changes the direction of a magnetic force line through the spherical embedding layer, so that the slurry is oriented under the action of the magnetic field and is magnetized in the vertical direction; the lower surface of the embedding layer is processed into an inverted spherical surface, and the direction of the magnetic force line is changed, so that the magnetic force line of the male die is diffused towards the periphery; the magnetic force lines on the upper surface of the embedding layer are close to the center, so that the magnetic force lines tend to be parallel in the vertical direction, and the extreme difference between the upper surface and the lower surface of the product is reduced.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of a spherical male die for a permanent magnetic ferrite tile wet-pressing magnetic field forming die according to the present invention;
FIG. 2 is a schematic diagram of a top view structure of a spherical male die for a permanent magnetic ferrite tile wet-pressing magnetic field forming die of the present invention;
FIG. 3 is a schematic side view of a spherical male die for a permanent magnetic ferrite tile wet-pressing magnetic field forming die.
Detailed Description
The purpose of the invention can be realized by the following technical scheme:
a spherical embedded male die for a permanent magnetic ferrite magnetic shoe wet-pressing magnetic field forming die is disclosed, and referring to Figs. 1-3, the spherical embedded male die comprises a male die fixing plate 1, a water outlet hole 2, a base body 3, an embedded layer 4, an aspherical surface 5, an end surface 6, a top surface 7 and a material injection hole 8;
the bottom end of the substrate 3 is provided with a punch plate 1, and the lower surface of the punch plate 1 is provided with a water outlet hole 2;
the upper surface of the substrate 3 is provided with an anti-spherical surface 5, an embedding layer 4 is arranged above the anti-spherical surface 5, and the upper surface of the embedding layer 4 is a spherical surface; two ends of the substrate 3 are intersected with the spherical surfaces 5 to form end surfaces 6; a top surface 7 is arranged above the spherical surface 5, and an end surface 6 is arranged outside the top surface 7; the upper surface of the top surface 7 is provided with a material injection hole 8;
the lower surface of the embedding layer 4 is provided with a spherical surface, and the lower surface of the embedding layer 4 is matched with the spherical surface 5;
the water outlet hole 2 penetrates through the male die fixing plate 1 and extends into the base body 3 from the bottom end of the base body 3;
the matrix 3 is made of strong magnetic conduction pure iron;
the embedded layer 4 is made of weak magnetic materials;
the thickness of the embedding layer 4 is 1.5-15 mm;
the center of the embedded layer 4 is thick, and the edge of the embedded layer is thin; the thickness of the central line part of the embedding layer 4 is 5-15 mm; the thickness of the edge of the embedding layer 4 is 1.5-4 mm; the thickness of the mosaic layer 4 gradually transits from the central line to the edge;
the use method of the male die comprises the following steps:
firstly, presintering iron oxide at high temperature once, crushing the iron oxide into particles of 5-8 um by a dry ball mill, then grinding the particles, mixed with water and the iron oxide of steel balls by a wet ball mill to slurry of 0.8-1.2 um, and controlling the water content of the slurry to be 35% by a settling tower;
step two, injecting the slurry into the automatic injection mold through the injection hole 8;
the automatic material injection mold comprises a water absorption plate, a female mold and a male mold; a magnetizing coil is arranged above the water absorption plate, and is magnetized in the pressing process of the press, and a closed magnetic field is formed by a magnetic line of force through the water absorption plate, the male die, the magnetizing coil and the press;
pressing the slurry by a hydraulic machine through a male die and a female die matched with the male die, magnetizing a magnetizing coil outside the male die, and generating a magnetic field by the magnetizing coil; under the action of a magnetic field, the slurry changes the direction of a magnetic force line through the spherical embedding layer 4, so that the slurry is oriented under the action of the magnetic field and is magnetized in the vertical direction; the lower surface of the embedding layer 4 is processed into an inverted spherical surface, and the direction of the magnetic force line is changed, so that the magnetic force line of the male die is diffused towards the periphery; the magnetic force lines on the upper surface of the embedding layer 4 are close to the center, so that the magnetic force lines tend to be parallel in the vertical direction, and the extreme difference between the upper surface and the lower surface of the product is reduced;
step four, under the high pressure of pressing, the slurry forms the green body; and sintering and grinding the green blank to prepare the permanent magnetic ferrite product.
The working principle of the invention is as follows:
the bottom end of a substrate 3 is provided with a punch retainer 1, and the lower surface of the punch retainer 1 is provided with a water outlet hole 2; the upper surface of the substrate 3 is provided with an anti-spherical surface 5, an embedding layer 4 is arranged above the anti-spherical surface 5, and the upper surface of the embedding layer 4 is a spherical surface; two ends of the substrate 3 are intersected with the spherical surfaces 5 to form end surfaces 6; a top surface 7 is arranged above the spherical surface 5, and an end surface 6 is arranged outside the top surface 7; the upper surface of the top surface 7 is provided with a material injection hole 8;
pressing the slurry by a hydraulic machine through a male die and a female die matched with the male die, magnetizing a magnetizing coil outside the male die, and generating a magnetic field by the magnetizing coil; under the action of a magnetic field, the slurry changes the direction of a magnetic force line through the spherical embedding layer 4, so that the slurry is oriented under the action of the magnetic field and is magnetized in the vertical direction; the lower surface of the embedding layer 4 is processed into an inverted spherical surface, and the direction of the magnetic force line is changed, so that the magnetic force line of the male die is diffused towards the periphery; the magnetic lines of force on the upper surface of the embedding layer 4 are close to the center, so that the magnetic lines of force tend to be parallel in the vertical direction, and the extreme difference between the upper surface and the lower surface of the product is reduced.
The invention provides a spherical male die for a permanent magnetic ferrite magnetic shoe wet-pressing magnetic field forming die, which has the characteristics of enabling magnetic lines of force to tend to be parallel in the vertical direction and reducing the extreme difference of the upper surface and the lower surface of a product. The invention has the beneficial effects that: pressing the slurry by a hydraulic machine through a male die and a female die matched with the male die, magnetizing a magnetizing coil outside the male die, and generating a magnetic field by the magnetizing coil; under the action of a magnetic field, the slurry changes the direction of a magnetic force line through the spherical embedding layer, so that the slurry is oriented under the action of the magnetic field and is magnetized in the vertical direction; the lower surface of the embedding layer is processed into an inverted spherical surface, and the direction of the magnetic force line is changed, so that the magnetic force line of the male die is diffused towards the periphery; the magnetic force lines on the upper surface of the embedding layer are close to the center, so that the magnetic force lines tend to be parallel in the vertical direction, and the extreme difference between the upper surface and the lower surface of the product is reduced.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (8)
1. A spherical embedded male die for a permanent magnetic ferrite magnetic shoe wet-pressing magnetic field forming die comprises a male die fixing plate (1), a water outlet hole (2), a base body (3), an embedded layer (4), an anti-spherical surface (5), an end surface (6), a top surface (7) and a material injection hole (8), and is characterized in that;
the bottom end of the base body (3) is provided with a male die fixing plate (1), and the lower surface of the male die fixing plate (1) is provided with a water outlet hole (2);
the upper surface of the base body (3) is provided with an anti-spherical surface (5), an embedding layer (4) is arranged above the anti-spherical surface (5), and the upper surface of the embedding layer (4) is set to be a spherical surface; the two ends of the substrate (3) are intersected with the spherical surfaces (5) to form end surfaces (6); a top surface (7) is arranged above the reverse spherical surface (5), and an end surface (6) is arranged outside the top surface (7); and the upper surface of the top surface (7) is provided with a material injection hole (8).
2. The embedded spherical convex die for the permanent ferrite magnetic shoe wet-pressing magnetic field forming die according to claim 1, characterized in that the lower surface of the embedded layer (4) is provided with a spherical surface, and the lower surface of the embedded layer (4) is matched with the spherical surface (5).
3. The embedded spherical convex die for the permanent magnetic ferrite magnetic shoe wet-pressing magnetic field forming die according to claim 1, wherein the water outlet hole (2) penetrates through the convex die fixing plate (1) and extends into the base body (3) from the bottom end of the base body (3).
4. The embedded spherical male die for the permanent ferrite magnetic shoe wet-pressing magnetic field forming die according to claim 1, characterized in that the base body (3) is made of strong magnetic pure iron.
5. The embedded spherical male die for the permanent ferrite magnetic shoe wet-pressing magnetic field forming die according to claim 1, characterized in that the embedded layer (4) is made of weak magnetic material.
6. The embedded spherical male die for the permanent ferrite magnetic shoe wet-pressing magnetic field forming die according to claim 1, wherein the thickness of the embedded layer (4) is 1.5-15 mm.
7. The embedded spherical male die for the permanent ferrite magnetic shoe wet-pressing magnetic field forming die according to claim 1, wherein the embedded layer (4) is thick in the center and thin in the edge; the thickness of the central line part of the embedding layer (4) is 5-15 mm; the edge thickness of the embedding layer (4) is 1.5-4 mm; the thickness of the mosaic layer (4) gradually transits from the center line to the edge.
8. The embedded spherical male die for the permanent ferrite magnetic shoe wet-pressing magnetic field forming die according to claim 1, characterized in that the use method of the male die comprises:
firstly, presintering iron oxide at high temperature once, crushing the iron oxide into particles of 5-8 um by a dry ball mill, then grinding the particles, mixed with water and the iron oxide of steel balls by a wet ball mill to slurry of 0.8-1.2 um, and controlling the water content of the slurry to be 35% by a settling tower;
injecting the slurry into the automatic injection mold through the injection hole (8);
the automatic material injection mold comprises a water absorption plate, a female mold and a male mold; a magnetizing coil is arranged above the water absorption plate, and is magnetized in the pressing process of the press, and a closed magnetic field is formed by a magnetic line of force through the water absorption plate, the male die, the magnetizing coil and the press;
pressing the slurry by a hydraulic machine through a male die and a female die matched with the male die, magnetizing a magnetizing coil outside the male die, and generating a magnetic field by the magnetizing coil; under the action of a magnetic field, the direction of a magnetic force line is changed by the slurry through the spherical embedding layer (4), so that the slurry is oriented under the action of the magnetic field and is magnetized in the vertical direction;
step four, under the high pressure of pressing, the slurry forms the green body; and sintering and grinding the green blank to prepare the permanent magnetic ferrite product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911378958.3A CN111086095A (en) | 2019-12-27 | 2019-12-27 | Embedded spherical male die for permanent magnetic ferrite magnetic shoe wet-pressing magnetic field forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911378958.3A CN111086095A (en) | 2019-12-27 | 2019-12-27 | Embedded spherical male die for permanent magnetic ferrite magnetic shoe wet-pressing magnetic field forming die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111086095A true CN111086095A (en) | 2020-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911378958.3A Pending CN111086095A (en) | 2019-12-27 | 2019-12-27 | Embedded spherical male die for permanent magnetic ferrite magnetic shoe wet-pressing magnetic field forming die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111086095A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009111418A (en) * | 2009-01-19 | 2009-05-21 | Shin Etsu Chem Co Ltd | Die, molding machine and method used for manufacturing anisotropic magnet, and magnet manufactured thereby |
| CN201566025U (en) * | 2009-12-11 | 2010-09-01 | 安徽金寨将军磁业有限公司 | Permanent magnetic ferrite magnetic shoe counter-pressure mould |
| CN101860091A (en) * | 2010-04-26 | 2010-10-13 | 马鞍山市鑫洋永磁有限责任公司 | Preparation method for rare earth permanent ferrite magnetic shoe and product |
-
2019
- 2019-12-27 CN CN201911378958.3A patent/CN111086095A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009111418A (en) * | 2009-01-19 | 2009-05-21 | Shin Etsu Chem Co Ltd | Die, molding machine and method used for manufacturing anisotropic magnet, and magnet manufactured thereby |
| CN201566025U (en) * | 2009-12-11 | 2010-09-01 | 安徽金寨将军磁业有限公司 | Permanent magnetic ferrite magnetic shoe counter-pressure mould |
| CN101860091A (en) * | 2010-04-26 | 2010-10-13 | 马鞍山市鑫洋永磁有限责任公司 | Preparation method for rare earth permanent ferrite magnetic shoe and product |
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Application publication date: 20200501 |