CN101182603A - Neodymium-iron-boron cylindrical form permanent magnetic material with longitudinal through-hole molding method and special moulds - Google Patents
Neodymium-iron-boron cylindrical form permanent magnetic material with longitudinal through-hole molding method and special moulds Download PDFInfo
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- CN101182603A CN101182603A CNA2007100715714A CN200710071571A CN101182603A CN 101182603 A CN101182603 A CN 101182603A CN A2007100715714 A CNA2007100715714 A CN A2007100715714A CN 200710071571 A CN200710071571 A CN 200710071571A CN 101182603 A CN101182603 A CN 101182603A
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Abstract
The invention discloses a forming method of Nd-Fe-B cylindrical permanent magnetic material which is equipped with a vertical through hole; a metal internal lower mold (4) is combined with a metal external mold and half of the quantitative starch is poured into the combination; and then a first metal internal upper mold is inserted and a magnetic field forming press is used for obtaining the lower cylindrical permanent material; stripping; the first metal upper mold is taken out and a metal round rod (7) is put in the semi-circle hole of lower semi-cylindrical permanent magnetic material and the other half of the starch is poured in and then a second metal internal upper mold (2) is inserted to be formed on the magnetic field forming press; the metal round rod (7) is taken out after stripping and the Nd-Fe-B cylindrical permanent magnetic material (11); the special mold is characterized in that one metal internal lower mold (4) is matched with two metal internal upper mold. The invention reduces the waste of material and promotes the product yield; at the same time, the production efficiency is increased and the production cost is reduced.
Description
Technical field
The present invention relates to a kind of manufacture method and specific equipment of the neodymium iron boron cylindrical permanent magnetic materials with longitudinal hole, specifically be a kind of neodymium-iron-boron cylindrical form permanent magnetic material with longitudinal hole () forming method and particular manufacturing craft.
Background technology
Production existing decades of history with the neodymium-iron-boron cylindrical form permanent magnetic material of longitudinal hole; The neodymium-iron-boron cylindrical form permanent magnetic material manufacture method of prior art band longitudinal hole, its manufacturing process steps generally is: raw material batching → vacuum melting becomes alloy pig → crushing grinding machine to make powder → moulding that fine particle → airflow milling is processed into the required fineness of technology namely to be pressed in magnetic field and to be stored in behind the static pressure such as solid cylindrical → vacuum packaging → wait in the vacuum tank → sintering in vacuum sintering furnace → surface smoothness processing → Special drill machine longitudinal drilling → cut into sheet or the cylindrical products of client's desired thickness. It more than is mature technology.
And the committed step in the above-mentioned processing step promptly obtains the step of longitudinal hole, and prior art adopted for two steps carried out:
The first step once shaped promptly is pressed into the solid cylindrical permanent magnet material in magnetic field: its end face is had counterdie and metal outer mold combination in the metal of at least one its opening horizontal semi-circular hole up, form top opening and the concordant outer mold cavity of top end face, pour in the outer mold cavity the powder of specified volume is disposable then, insert patrix in the metal again, in the described metal baseplane of patrix also have with metal in the identical and concentric semi-circular hole of horizontal semi-circular hole quantity of counterdie, again in moulding on the pressing under magnetic field press promptly: integral body is put on the forming supporter of moulding press, position by regulating press two ends magnetized head is in addition fastening, open the electric current that magnetizes of 35～100A then, produce the magneticstrength of 11000～22000Gs, carry out the positive pulse orientation, use 3～10 tons pressure again, patrix in the vertical extrusion metal, or the base plate of interior patrix of simultaneously vertical extrusion metal and metal outer mold, powder is pressed into type, again the demoulding.
After the vacuum packaging of above prior art → wait static pressure, be stored in the vacuum vessel → step that sintering in vacuum sintering furnace → surface smoothness is handled after, entered for second step again: adopt special-purpose drilling machine vertically to hole.
The neodymium-iron-boron cylindrical form permanent magnetic material forming method of above prior art band longitudinal hole, show following defective at the production practice convexity:
1, owing to be solid sintering, in sintering process, the center because of solid product can not be exposed in the high temperature sintering environment on the one hand, and the thickness that need heat because of product is thicker on the other hand, so the product heat transfer time is long, required sintering time is long, the energy consumption height; Simultaneously, when heating in the high temperature sintering environment, the material heat exchange surface area is few relatively, and the consistence that product shrinks is poor, so the stability of product performance and quality product are all undesirable.
2, owing to must adopt drilling machine vertically to hole, its smear metal all abandons, so waste of raw materials is big; Not only not only hard but also broken because of Nd-Fe-Bo permanent magnet material, under powerful external force effect, product is unfilled corner or break very easily, simultaneously, often causes this product rejection because of drill bit breaks in product, causes the finished product rate lower during boring; Again, product is pressing from both sides on the drilling machine and is taking off because when boring needs one by one, causes long processing time, production efficiency is low, life cycle of the product is long; Also have, drill bit is easily broken during owing to boring, the cost height that causes holing, and above in addition cost of labor height, so, its production cost height.
And for a long time, people get used to adopting above twice processing step to obtain longitudinal hole, and the industry continues into the present always both at home and abroad.And above-mentioned defective is the technical barrier of puzzlement Nd-Fe-Bo permanent magnet material production industry always.Many manufacturers and R﹠D institution have also done many tacklings of key scientific and technical problems, and a counterdie is only joined a patrix and required powder is disposable pours in the die cavity but fail all the time to break away from, and the traditional thinking mode of a step compression moulding.
Simultaneously, being used to of prior art is generally following structure with the particular manufacturing craft of the forming method of the neodymium-iron-boron cylindrical form permanent magnetic material of longitudinal hole: it comprise the top be the concordant removable metal outer mold of opening and frame top end face and its profile and size matches with outer mold cavity and the removable metal that places in the outer mold cavity in counterdie and the interior patrix of metal, the baseplane of the plane, top of the interior counterdie of described metal and the interior patrix of metal is made of the horizontal semi-circular hole of concentric pylone respectively at least one.Obviously, the mould of above-mentioned prior art can only suppress solid neodymium-iron-boron cylindrical form permanent magnetic material.
Summary of the invention
The technical problem to be solved in the present invention is, provide a kind of product heat transfer time is short, required sintering time is short, energy consumption is low, product shrinks high conformity, waste of material few, can improve finished product rate and production efficiency, the forming method of the neodymium-iron-boron cylindrical form permanent magnetic material of the band longitudinal hole that can reduce production costs.
Technical scheme of the present invention is, a kind of neodymium-iron-boron cylindrical form permanent magnetic material forming method with longitudinal hole is provided, and comprises following processing step:
With counterdie in the metal and metal outer mold combination, form top opening and the concordant outer mold cavity of top end face, put into the metering powder to inner chamber, insert the interior patrix of metal that its profile and size and outer mold cavity match, moulding on the pressing under magnetic field press, the demoulding;
Its characteristics are: describedly put into quantitative powder, insert the metal patrix, moulding is divided equally secondary and carried out on the pressing under magnetic field press:
Pour half of quantitative powder earlier into, insert patrix in first metal again, moulding gets lower half circle annulated column permanent magnet material on the pressing under magnetic field press;
Take out patrix in first metal, round metal bars is put into the semi-circular hole of described lower half circle annulated column permanent magnet material, pour second half quantitative powder again into, insert patrix in second metal again, moulding on the pressing under magnetic field press again, take out round metal bars after the demoulding, promptly get neodymium-iron-boron cylindrical form permanent magnetic material with longitudinal hole.
The present invention has broken the conventional thought pattern that people are traditional for a long time, thoroughly change the method that employing twice processing step that the domestic and international industry continues into the present always obtains the longitudinal hole of neodymium-iron-boron cylindrical form permanent magnetic material, thoroughly solved the technical barrier that perplexs the Nd-Fe-Bo permanent magnet material production industry for many years.
The forming method of the neodymium-iron-boron cylindrical form permanent magnetic material of band longitudinal hole of the present invention compared with prior art has following remarkable advantage and beneficial effect:
1, because the neodymium-iron-boron cylindrical form permanent magnetic material of the band longitudinal hole after the moulding is hollow sintering, in sintering process, centre hole because of hollow products directly is exposed in the high temperature sintering environment on the one hand, the thickness attenuation that need heat because of product on the other hand, thereby shortened the heat passage time, reduced sintering time (reducing sintering time about 25%～35%), its energy consumption is low; Simultaneously, when hollow products heats, increase heat exchange surface area relatively in the high temperature sintering environment, optimized the consistence that product shrinks, thereby increased substantially the stability and the quality product of product performance, promptly the stability of product performance and quality product are all very good.
2, because the neodymium-iron-boron cylindrical form permanent magnetic material of band longitudinal hole of the present invention need not process boring processing, chipless abandons, so both reduced raw-material waste (generally save material and reach 20%～50%), having increased substantially the finished product rate again is qualification rate (the common product yield rate is more than 95%), and simplified production sequence, shortened life cycle of the product, improved labor productivity, instrument consuming cost and cost of labor have been reduced, energy consumption, power consumption have been saved, so, reduced production cost significantly.
Another technical problem that the present invention will solve is that a kind of particular manufacturing craft of implementing with the neodymium-iron-boron cylindrical form permanent magnetic material forming method of longitudinal hole is provided.
Another technical scheme of the present invention is, a kind of particular manufacturing craft of neodymium-iron-boron cylindrical form permanent magnetic material forming method of the enforcement band longitudinal hole with following structure is provided, it comprises that the top is that the concordant removable metal outer mold of opening and frame top end face, its profile and size and outer mold cavity match and removable interior counterdie of metal and the interior patrix of second metal that places in the outer mold cavity, the baseplane of patrix is respectively by at least one horizontal semi-circular hole of forming concentric pylone in the plane, top of counterdie and second metal in the described metal, and its characteristics are:
It also comprises patrix in first metal, there is the semicircle projection of level the baseplane of patrix in described first metal, the radius of the semicircle projection of described level is less than the radius of the semi-circular hole of counterdie in the metal, the quantity of the semicircle projection of described level equates that with the quantity of the semi-circular hole of interior counterdie the movable embedding of patrix is by in the inner chamber that counterdie constitutes in metal outer mold and the metal in described first metal;
It also comprises round metal bars, the radius of described round metal bars equates with the radius of the semicircle projection of the interior patrix of first metal, in the quantity of described round metal bars and the metal in the semi-circular hole of counterdie and second metal quantity of the semi-circular hole of patrix equate, the equal in length of the length of described round metal bars and above-mentioned two semi-circular hole, the supporting use of patrix in the counterdie and second metal in described round metal bars and the metal is in the concentric pylone after can placing the concentric with it semi-circular hole of patrix in the semi-circular hole of counterdie in the metal and second metal to close up.
Particular manufacturing craft of the present invention provides equipment guarantee for the neodymium-iron-boron cylindrical form permanent magnetic material forming method of implementing band longitudinal hole of the present invention, make the enforcement of the inventive method become possibility, guaranteed on the slave unit that also method of the present invention has above remarkable advantage and beneficial effect.
Description of drawings
Fig. 1 is the sectional structure synoptic diagram of the particular manufacturing craft of prior art.
Fig. 2 is a sectional structure synoptic diagram of implementing the particular manufacturing craft of the inventive method.
Fig. 3 is the structural representation of facing of implementing patrix in first metal of particular manufacturing craft of the inventive method.
Fig. 4 is the structural representation of facing of implementing patrix in second metal of particular manufacturing craft of the inventive method.
Fig. 5 implements the sectional structure synoptic diagram of bowing after the counterdie assembling in the metal outer mold of particular manufacturing craft of the inventive method and the metal.
Fig. 6 is the inventive method sectional structure synoptic diagram of the particular manufacturing craft during moulding on the pressing under magnetic field press for the first time.
Fig. 7 is the inventive method sectional structure synoptic diagram of the particular manufacturing craft during moulding on the pressing under magnetic field press for the second time.
Shown in the figure
Mould of the present invention: 1, the semi-circular hole of counterdie in the metal, the semi-circular hole of patrix in the patrix in 2, second metal, 3, second metal, 4, counterdie in the metal, 5, metal side plate, 6, steady brace, 7, round metal bars, 8, patrix in first metal, 9, the semicircle projection of patrix in first metal, 10, semicircle annulated column permanent magnet material, 11, the cylindrical form permanent magnetic material of moulding, 12, metal base plate, 13, external mold;
Prior art mould: 101, the semi-circular hole of counterdie in the metal, 102, patrix in the metal, 103, the semi-circular hole of patrix in the metal, 104, counterdie in the metal, 105, metal side plate, 106, steady brace, 1012, metal base plate.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
The manufacture method of the neodymium-iron-boron cylindrical form permanent magnetic material of band longitudinal hole of the present invention is except obtaining this committed step difference of longitudinal hole; Namely different except forming step and cancelled the drilling machine longitudinal drilling step, all the other manufacturing process steps are same as the prior art: be stored in behind the powder that raw material batching → vacuum melting becomes alloy pig → crushing grinding machine to make fine particle → airflow milling to be processed into the required fineness of technology → moulding on the pressing under magnetic field press (detailed description difference below) → vacuum packaging → wait static pressure in the vacuum tank → sheet or the cylindrical products of client's desired thickness processed → cut into to sintering → surface smoothness in vacuum sintering furnace. So do not repeat them here.
As Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, shown in Figure 7.
The neodymium-iron-boron cylindrical form permanent magnetic material forming method of band longitudinal hole of the present invention comprises following processing step:
With counterdie in the metal 4 and metal outer mold 13 combinations, form top opening and the concordant outer mold cavity of top end face, pour quantitative powder into to inner chamber, insert the interior patrix of metal that its profile and size and outer mold cavity match, moulding on the pressing under magnetic field press, the demoulding.
The characteristics of forming method of the present invention are: describedly put into quantitative powder, insert the metal patrix, moulding is divided equally secondary and carried out on the pressing under magnetic field press:
Pour half of quantitative powder earlier into, insert patrix 8 in first metal again, moulding gets lower half circle annulated column permanent magnet material 10 on the pressing under magnetic field press;
Take out patrix 8 in first metal, round metal bars 7 is put into the semi-circular hole of described lower half circle annulated column permanent magnet material 10, pour second half quantitative powder again into, insert patrix 2 in second metal again, moulding on the pressing under magnetic field press again, take out round metal bars 7 after the demoulding, promptly get neodymium-iron-boron cylindrical form permanent magnetic material 11 with longitudinal hole.
The neodymium-iron-boron cylindrical form permanent magnetic material forming method of band longitudinal hole of the present invention, its processing step is described in further detail as follows:
Its end face there are counterdie 4 and metal outer mold 13 combinations in the metal of at least one its opening horizontal semi-circular hole 1 up, form top opening and concordant external mold (major part) inner chamber of its top end face, pour the Nd-Fe-B permanent magnetic powder that quantitative powder promptly weighs up weight on demand into to inner chamber, insert the interior patrix of metal that its profile and size and outer mold cavity (shape and size) match, moulding on the pressing under magnetic field press, that is: integral body is put on the forming supporter of moulding press, position (two following long side plates are exerted pressure) by regulating press two ends magnetized head is in addition fastening, open the electric current that magnetizes of 35～100A then, produce the magneticstrength of 11000～22000Gs, carry out the positive pulse orientation, use 3～10 tons pressure again, patrix in the vertical extrusion metal, or the metal base plate of interior patrix of simultaneously vertical extrusion metal and metal outer mold, the demoulding again.
The characteristics of the inventive method are: describedly put into quantitative powder, insert the metal patrix, moulding is divided equally secondary and carried out on the pressing under magnetic field press:
Pour half of quantitative powder earlier into, insert patrix 8 in first metal that there is the semicircle projection 9 of level that its radius equates less than the quantity of the semi-circular hole 1 of counterdie 4 in the radius of the semi-circular hole 1 of counterdie in the metal 4 and its quantity and the metal baseplane again, certainly, known to general knowledge, the plane, top of the interior patrix 8 of first metal this moment is higher than the top end face of metal outer mold 13, and moulding gets lower half circle annulated column permanent magnet material 10 on the pressing under magnetic field press;
Take out patrix 8 in first metal, the radius of the semicircle projection 9 of patrix 8 in its radius and first metal equated and quantity and metal in the quantity of semi-circular hole 1 of counterdie 4 equate and the round metal bars 7 of the equal in length of its length and semicircle projection 9 is put into the semi-circular hole of described lower half circle annulated column permanent magnet material 10, pour second half quantitative powder again into, insert again its baseplane have with metal in the semi-circular hole 1 of counterdie 4 concentric and quantity equates and second metal of downward opening horizontal semi-circular hole 3 in patrix 2, equally according to known to the general knowledge, the plane, top of the interior patrix 2 of second metal this moment is higher than the top end face of metal outer mold 13, moulding on the pressing under magnetic field press again, take out round metal bars 7 after the demoulding, promptly get neodymium-iron-boron cylindrical form permanent magnetic material 11 with longitudinal hole.
Referring to Fig. 1, being used to of prior art is generally following structure with the particular manufacturing craft of the forming method of the neodymium-iron-boron cylindrical form permanent magnetic material of longitudinal hole: it comprise the top be the concordant removable metal outer mold of opening and frame top end face 105 and its profile and size matches with outer mold cavity and the removable metal that places in external mold 105 inner chambers in patrix 102 in counterdie 104 and the metal, the baseplane of the plane, top of the interior counterdie 104 of described metal and the interior patrix 102 of metal is made of the horizontal semi-circular hole 101,103 of concentric pylone respectively at least one.
As Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, shown in Figure 7.
Implement the particular manufacturing craft of the neodymium-iron-boron cylindrical form permanent magnetic material forming method of band longitudinal hole of the present invention, it comprises that its top is the concordant removable metal outer mold of opening and frame top end face 13 and its profile and size matches with external mold (all) inner chamber (shape and size) and removable interior counterdie 4 of metal and the interior patrix 2 of second metal that places in external mold 13 inner chambers, present embodiment adopts following concrete structure: locate with the last plane applying of metal base plate 12 and with steady brace 6 baseplane of counterdie 4 in the metal, four contour metal side plate 5 are fitted with four sidewalls of the interior counterdie 4 of metal, wherein the recessed seam of two long side plate inboards that are parallel to each other clamps two short side plates that are parallel to each other, the equal in length of described two block length side plates, the width of described two short side plates equates, the inner side-wall of the top end face of counterdie 4 and four contour metal side plate 5 constitutes (rectangle) rectangle inner chamber in the described metal, and the interior patrix 2 of the patrix 8 and second metal embeds or withdraw from this rectangle inner chamber according to the precedence activity in described first metal.Patrix 2 is exactly the interior patrix 102 of metal of prior art mould in described second metal.In the described metal in the plane, top of counterdie 4 and second metal baseplane of patrix 2 be horizontal semi-circular hole 1 and horizontal semi-circular hole 3 by the horizontal semi-circular hole 1,3 that at least one forms concentric pylone respectively.Semi-circular hole 1 quantity of counterdie 4 is for being four in the described metal of this specific embodiment, and semi-circular hole 3 quantity of patrix 2 are four in described second metal.
The characteristics of mould of the present invention are:
It also comprises patrix 8 in first metal.There is the semicircle projection 9 of level the baseplane of patrix 8 in described first metal, and the radius of the semicircle projection 9 of described level is less than the radius of the semi-circular hole 1 of counterdie in the metal 4.The quantity of the semicircle projection 9 of described level equates that with the quantity of the semi-circular hole 1 of the interior counterdie 4 of metal present embodiment is four.Patrix 8 movable embeddings are by in (major part) inner chamber that counterdie 4 constitutes in the metal side plate 5 of metal outer mold 13 and the metal in described first metal, during practical application, the inner chamber that half metal side plate 5 and metal counterdie 4 by metal outer mold 13 of quantitative powder constitutes has been put in patrix 8 movable embeddings in described first metal.
It also comprises round metal bars 7.Described round metal bars 7 has tapering, more to help the demoulding.Described round metal bars 7 smooth surfaces, promptly generally handle through smooth finish such as grinding machines on the surface, also can be coated with lubricating oil.The radius of described round metal bars 7 equates with the radius of the semicircle projection 9 of the interior patrix 8 of first metal.1/5～3/5 of concentric pylone diameter after the concentric with it semi-circular hole 3 that the diameter of described round metal bars 7 is preferably patrix 2 in the semi-circular hole 1 of counterdie 4 in the described metal and second metal is closed up.In the quantity of described round metal bars 7 and the metal in the semi-circular hole 1 of counterdie 4 and second metal quantity of the semi-circular hole 3 of patrix 2 equate that present embodiment is four.The equal in length of the length of described round metal bars 7 and described semi-circular hole 1 and semi-circular hole 3 is promptly with the equal in length of above-mentioned semicircle projection 9.Patrix 2 supporting uses in the counterdie 4 and second metal in described round metal bars 7 and the metal are in the concentric pylone after can placing the concentric with it semi-circular hole 3 of patrix 2 in the semi-circular hole 1 of counterdie 4 in the metal and second metal to close up.During actual the use, in second half quantitative powder that described round metal bars 7 is placed in the semi-circular hole of the lower half circle annulated column permanent magnet material 10 that moulding obtains on the pressing under magnetic field press and is pushed down by the semi-circular hole 3 of patrix 2 in second metal.
The quantity of the semi-circular hole 1 of counterdie 4 in the described metal, be generally one to six as required, the quantity of the semicircle projection 9 of patrix 8 also is generally one to six in described first metal, the quantity of described round metal bars 7 also is generally one to six, the quantity of the semi-circular hole 3 of patrix 2 is generally one to six equally in described second metal, is four as present embodiment.
The described metal of present embodiment refers generally to tool steel.
The present invention not only is confined to above embodiment, all various variations of in the protection domain of independent claim of the present invention, being done all in protection scope of the present invention, as: as described in the diameter of the round metal bars 7 concentric pylone diameter after closing up with semi-circular hole 1,3 can be other ratio than also; Described round metal bars 7 also can not established tapering; Described round metal bars 7 surfaces can not be strict with also that it is smooth; In the described metal in the semi-circular hole 1 of counterdie 4, first metal in the semicircle projection 9 of patrix 8, round metal bars 7, second metal semi-circular hole 3 quantity of patrix 2 also can be seven or more than; Described top be the concordant removable metal outer mold of opening and frame top end face 13 and its profile and size matches with external mold 13 inner chambers and the removable metal that places in external mold 13 inner chambers in counterdie 4 and the interior patrix of metal also can adopt other concrete structure, also can two short side plates be clamped as two block length side plates in the metal side plate 5 through holding bolt, counterdie 4 also can be without tommy 6 location in the described metal, and with screw metal side plate 5 and metal base plate 12 are tightened up, described metal side plate 5 also can be the square that four blocks of wide side plates constitute, even patrix 2 also can be shapes such as Polygons in the interior counterdie 4 of described metal and the interior patrix 8 of first metal and second metal, and promptly interior counterdie 4 of metal and metal side plate 5 inner side-walls also can constitute the inner chamber of other shape; Or the like.More than these variations, all fall within the scope of protection of the present invention.
Claims (7)
1. neodymium-iron-boron cylindrical form permanent magnetic material forming method with longitudinal hole comprises following processing step:
With counterdie in the metal (4) and metal outer mold (13) combination, form top opening and the concordant outer mold cavity of top end face, pour quantitative powder into, insert the interior patrix of metal that its profile and size and outer mold cavity match to inner chamber, moulding on the pressing under magnetic field press, the demoulding;
It is characterized in that: describedly put into quantitative powder, insert the metal patrix, moulding is divided equally secondary and carried out on the pressing under magnetic field press:
Pour half of quantitative powder earlier into, insert patrix (8) in first metal again, moulding gets lower half circle annulated column permanent magnet material (10) on the pressing under magnetic field press;
Take out patrix (8) in first metal, round metal bars (7) is put into the semi-circular hole of described lower half circle annulated column permanent magnet material (10), pour second half quantitative powder again into, insert patrix (2) in second metal again, moulding on the pressing under magnetic field press again, take out round metal bars (7) after the demoulding, promptly get neodymium-iron-boron cylindrical form permanent magnetic material (11) with longitudinal hole.
2. particular manufacturing craft of implementing the described method of claim 1, it comprises that its top is that opening and frame top end face concordant removable metal outer mold (13), its profile and size and external mold (13) inner chamber match and removable interior counterdie (4) of metal and the interior patrix (2) of second metal that places in external mold (13) inner chamber, the baseplane of the interior patrix (2) of the plane, top of counterdie (4) and second metal is characterized in that respectively by at least one horizontal semi-circular hole (1,3) of forming concentric pylone in the described metal:
It also comprises patrix (8) in first metal, there is the semicircle projection (9) of level the baseplane of patrix (8) in described first metal, the radius of the semicircle projection of described level (9) is less than the radius of the semi-circular hole (1) of counterdie in the metal (4), the quantity of the semicircle projection of described level (9) equates with the quantity of the semi-circular hole (1) of interior counterdie (4), in described first metal in the inner chamber of the movable embedding of patrix (8) by the metal side plate (5) of metal outer mold (13) and interior counterdie (4) formation of metal;
It also comprises round metal bars (7), the radius of described round metal bars (7) equates with the radius of the semicircle projection (9) of the interior patrix (8) of first metal, the quantity of the semi-circular hole (3) of the interior patrix (2) of the semi-circular hole (1) of counterdie (4) and second metal equates in the quantity of described round metal bars (7) and the metal, the equal in length of the length of described round metal bars (7) and described semi-circular hole (1) and semi-circular hole (3), the supporting use of patrix (2) in the counterdie (4) and second metal in described round metal bars (7) and the metal is in the concentric pylone after can placing the concentric with it semi-circular hole (3) of the semi-circular hole (1) of counterdie (4) in the metal and the interior patrix (2) of second metal to close up.
3. particular manufacturing craft according to claim 2 is characterized in that: the diameter of described round metal bars (7) be after the concentric with it semi-circular hole (3) of the semi-circular hole (1) of counterdie (4) in the described metal and the interior patrix (2) of second metal is closed up the concentric pylone diameter 1/5～3/5.
4. particular manufacturing craft according to claim 2 is characterized in that: described round metal bars (7) has tapering.
5. particular manufacturing craft according to claim 2 is characterized in that: described round metal bars (7) smooth surface.
6. particular manufacturing craft according to claim 2, it is characterized in that: the quantity of the semi-circular hole (1) of counterdie (4) is one to six in the described metal, the quantity of the semicircle projection (9) of patrix (8) is one to six in described first metal, the quantity of described round metal bars (7) is one to six, and the quantity of the semi-circular hole (3) of patrix (2) is one to six in described second metal.
7. particular manufacturing craft according to claim 2, it is characterized in that: described top be the concordant removable metal outer mold (13) of opening and frame top end face and its profile and size and external mold (13) inner chamber matches and the removable metal that places in external mold (13) inner chamber in counterdie (4) and the metal patrix refer to: the last plane applying of the baseplane of counterdie (4) and metal base plate (12) and locate in the metal with steady brace (6), four contour metal side plate (5) are fitted with four sidewalls of the interior counterdie (4) of metal, wherein the recessed seam of two long side plate inboards that are parallel to each other clamps two short side plates that are parallel to each other, the equal in length of described two block length side plates, the width of described two short side plates equates, the inner side-wall of the top end face of counterdie (4) and four contour metal side plate (5) constitutes rectangular inner cavity in the described metal, and the interior patrix (2) of the patrix (8) and second metal embeds or withdraw from rectangular inner cavity according to the precedence activity in described first metal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100715714A CN101182603A (en) | 2007-09-28 | 2007-09-28 | Neodymium-iron-boron cylindrical form permanent magnetic material with longitudinal through-hole molding method and special moulds |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100715714A CN101182603A (en) | 2007-09-28 | 2007-09-28 | Neodymium-iron-boron cylindrical form permanent magnetic material with longitudinal through-hole molding method and special moulds |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103611936A (en) * | 2013-11-28 | 2014-03-05 | 山西中泰源工业自动化设备有限公司 | Mold used in robot system for magnetic material die-casting forming |
| CN104668566A (en) * | 2013-11-27 | 2015-06-03 | 北京中科三环高技术股份有限公司 | Method for forming magnet with longitudinal through hole |
| CN108568521A (en) * | 2018-04-24 | 2018-09-25 | 中国工程物理研究院材料研究所 | A kind of moulding system and compression-moulding methods of vanadium electrode |
| EP3945534A1 (en) * | 2020-07-26 | 2022-02-02 | Yantai Shougang Magnetic Materials Inc. | Preparation method of ring-shaped sintered nd-fe-b magnet and its moulding die |
| CN114477323A (en) * | 2022-01-10 | 2022-05-13 | 珠海格力电器股份有限公司 | Lock structure and purifier |
-
2007
- 2007-09-28 CN CNA2007100715714A patent/CN101182603A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104668566A (en) * | 2013-11-27 | 2015-06-03 | 北京中科三环高技术股份有限公司 | Method for forming magnet with longitudinal through hole |
| CN104668566B (en) * | 2013-11-27 | 2018-11-20 | 北京中科三环高技术股份有限公司 | Magnet forming method with longitudinal hole |
| CN103611936A (en) * | 2013-11-28 | 2014-03-05 | 山西中泰源工业自动化设备有限公司 | Mold used in robot system for magnetic material die-casting forming |
| CN103611936B (en) * | 2013-11-28 | 2015-11-25 | 山西中泰源工业自动化设备有限公司 | For the mould in the robot system of magnetic material die-cast formation |
| CN108568521A (en) * | 2018-04-24 | 2018-09-25 | 中国工程物理研究院材料研究所 | A kind of moulding system and compression-moulding methods of vanadium electrode |
| EP3945534A1 (en) * | 2020-07-26 | 2022-02-02 | Yantai Shougang Magnetic Materials Inc. | Preparation method of ring-shaped sintered nd-fe-b magnet and its moulding die |
| US11881351B2 (en) | 2020-07-26 | 2024-01-23 | Yantai Shougang Magnetic Materials Inc | Preparation method of ring-shaped sintered Nd—Fe—B magnet and its moulding die |
| CN114477323A (en) * | 2022-01-10 | 2022-05-13 | 珠海格力电器股份有限公司 | Lock structure and purifier |
| CN114477323B (en) * | 2022-01-10 | 2023-04-25 | 珠海格力电器股份有限公司 | Buckling structure and water purifier |
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