CN204585491U - A kind of mould of soft-magnetic ferrite core - Google Patents
A kind of mould of soft-magnetic ferrite core Download PDFInfo
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- CN204585491U CN204585491U CN201520161287.6U CN201520161287U CN204585491U CN 204585491 U CN204585491 U CN 204585491U CN 201520161287 U CN201520161287 U CN 201520161287U CN 204585491 U CN204585491 U CN 204585491U
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Abstract
The utility model is applicable to field of die equipment, disclose a kind of mould of soft-magnetic ferrite core, it comprises patrix, be located at die under patrix, be located at counterdie under die, die has die cavity, the bottom of patrix has patrix drift, the top of counterdie has counterdie drift, patrix drift and counterdie drift are all arranged in die cavity, upper die and lower die all adopt high-speed steel to make, and the end face of patrix drift and counterdie drift and side wall surface roughness after Surface Machining process reaches less than Ra0.008 μm.In the utility model, it makes upper die and lower die by adopting high-speed steel, and make its roughness reach Ra0.008 μm by carrying out surface treatment to the patrix drift being located at patrix lower end with the counterdie drift being located at lower die tip, thus greatly improve wearability and the hardness of patrix drift and counterdie drift, it is made to possess good fineness and shock-resistant ability, thus can improve widely shaping after the exterior quality of soft-magnetic ferrite core, improve production efficiency and the recycling rate of waterused of mould.
Description
Technical field
The invention belongs to field of die equipment, particularly relate to a kind of mould of soft-magnetic ferrite core.
Background technology
Soft magnetic ferrite is a kind of magnetic material that kind is maximum, most widely used, consumption is maximum, is the important foundation functional material of electronic information and household electrical appliances industry.Through the research and production of over half a century various countries' ferrite company, soft magnetic ferrite performance is greatly improved and improves, and its output increases progressively at a high speed year by year, and the scope of application also constantly expands.
In the prior art, soft-magnetic ferrite core is formed through techniques such as shaping, sintering mostly, for nickel-Zn ferrite magnetic core, with Fe2O3, ZnO, NiO, CuO for primary raw material, nickel-zinc power soft ferrite powder is made by mixing, pre-burning, ball milling, granulation, dry five operations, powder is added on moulding press again and carry out shaping compacting, disappear through shaping, sintering, mill, check, packaging and other steps obtains soft-magnetic ferrite core.
In the link of formed product, current soft magnetic ferrite industry mainly adopts the press of domestic Hui Zhong and Hai Li 6 ~ 12T level to produce, and the matching die of this kind of press adopted the extraordinary cold-punching mould steel alloy of tungsten carbide+DC53 in the past usually.This material mould wears no resistance poor with mold surface finish, thus the magnetic core poor surface smoothness produced, and this kind of material Die price is expensive, often overlaps average price at about 10,000 yuan.Its ordinary life is generally 200,000 times, and calculate for 30,000 times by normal every day, every mold just need can only be scrapped with 7 months at most, and not only production efficiency is not high for it, and cost is relatively high, and mould recycling rate of waterused is not high, is unfavorable for energy-saving and emission-reduction, joint Zhi Jiangben.
Summary of the invention
The object of the present invention is to provide a kind of mould of soft-magnetic ferrite core, be intended to the problem that mould production efficiency is low, cost is higher and mould recycling rate of waterused is not high solving prior art.
Technical scheme of the present invention is: a kind of mould of soft-magnetic ferrite core, it comprises patrix, be located at the die under described patrix, be located at the counterdie under described die, described die has die cavity, the bottom of described patrix has a patrix drift, the top of described counterdie has a bottom punch head, and the lateral cross-sectional area of described patrix drift and described counterdie drift is all less than the lateral cross-sectional area of the die cavity of described die, described patrix drift and described counterdie drift are all arranged in described die cavity to make the ferrite powder punching press in described die cavity form the product that centre has through hole, described patrix and described counterdie all adopt high-speed steel to make, the end face of described patrix drift and described counterdie drift and side wall surface roughness after Surface Machining process reaches less than Ra0.008 μm.
Further, the middle part of described patrix and described counterdie all has through hole, and the mould of described soft-magnetic ferrite core also comprises the plug be arranged in after the through hole of described counterdie passes through described counterdie in the through hole of described die and described patrix.
Further, described patrix and described counterdie adopt S390 high-speed steel to make.
Further, the described Surface Machining process that the end face of described patrix drift and described counterdie drift and side wall surface carry out at least comprises mirror finish process and electroplating technology.
Further, the end face of described patrix drift and described counterdie drift and side wall surface reach less than Ra0.01 μm through described mirror finish process rear surface fineness.
Further, the metal that described electroplating technology adopts is titanium.
Further, the thickness of electrodeposited coating that described electroplating technology is formed is 0.05 ~ 0.10mm.
Further, described patrix drift and the described end face of counterdie drift and the case hardness of side wall surface reach more than HRC65.
Further, described counterdie also comprises counterdie main body, and the top of described counterdie main body is located at by described counterdie drift, and the lateral cross-sectional area of described counterdie main body is greater than the lateral cross-sectional area of the die cavity of described die.
Further, the die cavity cross section of described die is circular or polygon.
The mould of soft-magnetic ferrite core provided by the invention, it makes upper die and lower die by adopting high-speed steel, and make its roughness reach Ra0.008 μm by carrying out surface treatment to the patrix drift being located at patrix lower end with the counterdie drift being located at lower die tip, thus greatly improve wearability and the hardness of patrix drift and counterdie drift, it is made to possess good fineness and shock-resistant ability, thus can improve widely shaping after the exterior quality of soft-magnetic ferrite core, and the mold use life-span can be extended, that is improve production efficiency and the recycling rate of waterused of mould and reduce die cost.
Accompanying drawing explanation
Fig. 1 is the cross-sectional schematic of the mould of the soft-magnetic ferrite core that the embodiment of the present invention provides;
Fig. 2 is the exploded perspective view of the mould of the soft-magnetic ferrite core that the embodiment of the present invention provides.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As depicted in figs. 1 and 2, the mould of the soft-magnetic ferrite core that the embodiment of the present invention provides, for being soft-magnetic ferrite core by ferrite powder machine-shaping, it comprises patrix 1, be located at the die 2 under patrix 1, be located at the counterdie 3 under die 2, die 2 has die cavity 21, particularly, die cavity 21 is located at the middle part of die 2, and die cavity 21 axially runs through die 2, die cavity 21 is for inwardly filling ferrite powder a, the bottom of patrix 1 has a patrix drift 11, the top of counterdie 3 has a bottom punch head 31, and the lateral cross-sectional area of patrix drift 11 and counterdie drift 31 is all less than the lateral cross-sectional area of the die cavity 21 of die 2, thus patrix drift 11 and counterdie drift 31 all can be arranged in die cavity 21, like this, after in the die cavity 21 of patrix drift 11 and counterdie drift 31 being inserted die 2, the middle part of the die cavity 21 of die 2 is just plugged, thus the ferrite powder a punching press in die cavity 21 can be made to be formed product (also namely magnetic core) that centre has through hole, patrix 1 and counterdie 3 all adopt high-speed steel to make, high-speed steel has good wearability and higher hardness, thus ferrite powder a particle " flowing " and easily abrasion is caused to it in die cavity 21 can be prevented, the end face of patrix drift 11 and counterdie drift 31 and side wall surface roughness after Surface Machining process reaches less than Ra0.008 μm.Patrix drift 11 and counterdie drift 31 can through rough turn, heat treatment, finish turning, electric discharge processing, slow wire feeding is processed, common polishing etc. processing, after Surface Machining process, the end face of patrix drift 11 and counterdie drift 31 and side wall surface have good fineness, thus there is good lubricity, thus ferrite powder a particle and patrix drift 11 and counterdie drift 31 can be reduced produce and rub and abrasion is caused to it, also make shaping after the outward appearance of soft-magnetic ferrite core better, thus can greatly improve its appearance yield, reduce the fraction defective scrapped because outward appearance is not good.
As above, soft-magnetic ferrite forming mould provided by the invention compared with prior art, by using new material and new_type treatment method, improve wearability and the hardness of patrix 1 and counterdie 3 widely, make patrix 1, counterdie 3 can be become by single use in the past and repeatedly uses, and then effectively solve the high problem of existing mold wearability and fineness difference and cost, in the application of reality, can reduce widely and produce fraction defective and save die cost and production cost, thus boost productivity and enterprise competitiveness, original product appearance qualification rate is promoted to 98% by original 50% by it, and in die cost, existing die cost is about 10000 yuan, its normal service life is generally 200,000 times, every mold just need can only be scrapped with 7 months at most, and soft-magnetic ferrite forming mould provided by the invention often overlaps average price at about 7000 yuan, its normal service life reaches 500,000 times, every mold can use 15 months at most, utilization rate reaches 250%, convert according to monthly use cost contrast, product causes scrapping because of bad order, original 5000 yuan/batches, be 200 yuan/batches now, often criticize saving 4800 yuan, mould use, mould was originally 1400 yuan/month, was 500 yuan/month now, monthly can cost saving 900 yuan, and saving rate reaches 64.3% and 96% respectively.Specification according to 100 moulding press production lines calculates, mould expense derivative thus and defective products scraping expense just can be enterprise and save 570,000 yuan, annual saving 6,840,000 yuan every months, thus can reduce the production cost of enterprise widely, enhance productivity, be also greatly conducive to environmental protection and energy saving.
As a detailed description of the invention, the middle part of patrix 1 and counterdie 3 all has through hole, and the mould of soft-magnetic ferrite core also comprises the plug 4 be arranged in after the through hole of counterdie 3 passes through counterdie 3 in the through hole of die 2 and patrix 1.Like this, because plug 4 is arranged in patrix 1 and counterdie 3 simultaneously, thus patrix 1 and counterdie 3 in the vertical direction can be made all to aim at for collimation with plug 4, there is good centering, namely plug 4 pairs of patrixes 1 and counterdie 3 play positioning action, can prevent its in the vertical direction from producing deviation.
As a detailed description of the invention, patrix 1 and counterdie 3 specifically can adopt S390 high-speed steel to make.S390 high-speed steel can obtain very high hardness and compression strength by austenitizing, it has good heat treatment dimensional stability, toughness is high, wearability is good, and also has good red hardness, therefore, make mould with these steel and can make it to possess higher hardness, also not easy to wear after repeatedly using, thus greatly can extend the mold use life-span and improve its recycling rate of waterused, reduce die cost.
As a detailed description of the invention, the Surface Machining process that the end face of patrix drift 11 and counterdie drift 31 and side wall surface carry out at least comprises mirror finish process and electroplating technology, certainly, also can comprise other Technology for Heating Processing.Mirror finish process can strengthen the surface smoothness of patrix drift 11 and counterdie drift 31 widely, thus provides good pretreatment basis for next step processes.
As a detailed description of the invention, the end face of patrix drift 11 and counterdie drift 31 and side wall surface reach less than Ra0.01 μm through mirror finish process rear surface fineness.Like this, can making follow-uply to carry out more smooth when carrying out electroplating technology, meeting follow-up plating requirement.
As a detailed description of the invention, the metal that electroplating technology adopts is titanium.Titanium alloy has that intensity is high, corrosion resistance good, heat resistance high.Thus in end face and side wall surface titanizing again after mirro finished of patrix drift 11 and counterdie drift 31, like this, titanium alloy can be made more stably to be deposited on patrix drift 11 and counterdie drift 31 and to form electrodeposited coating.
As a detailed description of the invention, the thickness of the electrodeposited coating that electroplating technology is formed is 0.05 ~ 0.10mm.Like this, patrix drift 11 and counterdie drift 31 can be made enough to withstand shocks, possess higher wearability and hardness.
As a detailed description of the invention, the end face of patrix drift 11 and counterdie drift 31 and the case hardness of side wall surface reach more than HRC65.After above-mentioned mirror finish process and electroplating technology, the end face of patrix drift 11 and counterdie drift 31 and the case hardness of side wall surface can reach more than HRC65, thus can stand the polish-brush repeatedly of ferrite powder a in for a long time.
As a detailed description of the invention, counterdie 3 also comprises counterdie main body 32, the top of counterdie main body 32 is located at by counterdie drift 31, and the lateral cross-sectional area of counterdie main body 32 is greater than the lateral cross-sectional area of the die cavity 21 of die 2, like this, when bottom punch head 21 is arranged in die 2, the lower port of the die cavity 21 of die 2 just can be blocked by counterdie main body 32, thus prevents ferrite powder a from spilling in the die cavity 21 of die 2.
As a detailed description of the invention, die cavity 21 cross section of die 2 is circular or polygon.Die cavity 21 cross section of die 2 can be arranged according to actual needs, such as, when needing shaping square soft-magnetic ferrite core, die cavity 21 cross section of die 2 can be arranged to square, when needing the soft-magnetic ferrite core of shaping circle, circle can be arranged in die cavity 21 cross section of die 2.
In the present embodiment, die cavity 21 cross section of die 2 is square, and the cross section of plug 4 can be square, also can be circle, and the soft-magnetic ferrite core entirety molded is for square.
These are only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement or improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the mould of a soft-magnetic ferrite core, it is characterized in that, comprise patrix, be located at the die under described patrix, be located at the counterdie under described die, described die has die cavity, the bottom of described patrix has a patrix drift, the top of described counterdie has a bottom punch head, and the lateral cross-sectional area of described patrix drift and described counterdie drift is all less than the lateral cross-sectional area of the die cavity of described die, described patrix drift and described counterdie drift are all arranged in described die cavity to make the ferrite powder punching press in described die cavity form the product that centre has through hole, described patrix and described counterdie all adopt high-speed steel to make, the end face of described patrix drift and described counterdie drift and side wall surface roughness after Surface Machining process reaches less than Ra0.008 μm.
2. the mould of soft-magnetic ferrite core as claimed in claim 1, it is characterized in that, the middle part of described patrix and described counterdie all has through hole, and the mould of described soft-magnetic ferrite core also comprises the plug be arranged in after the through hole of described counterdie passes through described counterdie in the through hole of described die and described patrix.
3. the mould of soft-magnetic ferrite core as claimed in claim 1, is characterized in that, described patrix and described counterdie adopt S390 high-speed steel to make.
4. the mould of soft-magnetic ferrite core as claimed in claim 1, it is characterized in that, the described Surface Machining process that the end face of described patrix drift and described counterdie drift and side wall surface carry out at least comprises mirror finish process and electroplating technology.
5. the mould of soft-magnetic ferrite core as claimed in claim 4, it is characterized in that, the end face of described patrix drift and described counterdie drift and side wall surface reach less than Ra0.01 μm through described mirror finish process rear surface fineness.
6. the mould of soft-magnetic ferrite core as claimed in claim 4, it is characterized in that, the metal that described electroplating technology adopts is titanium.
7. the mould of soft-magnetic ferrite core as claimed in claim 4, it is characterized in that, the thickness of the electrodeposited coating that described electroplating technology is formed is 0.05 ~ 0.10mm.
8. the mould of soft-magnetic ferrite core as claimed in claim 1, is characterized in that, described patrix drift and the described end face of counterdie drift and the case hardness of side wall surface reach more than HRC65.
9. the mould of soft-magnetic ferrite core as claimed in claim 1; it is characterized in that; described counterdie also comprises counterdie main body, and the top of described counterdie main body is located at by described counterdie drift, and the lateral cross-sectional area of described counterdie main body is greater than the lateral cross-sectional area of the die cavity of described die.
10. the mould of the soft-magnetic ferrite core as described in any one of claim 1 to 9, is characterized in that, the die cavity cross section of described die is circular or polygon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520161287.6U CN204585491U (en) | 2015-03-20 | 2015-03-20 | A kind of mould of soft-magnetic ferrite core |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520161287.6U CN204585491U (en) | 2015-03-20 | 2015-03-20 | A kind of mould of soft-magnetic ferrite core |
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| Publication Number | Publication Date |
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| CN204585491U true CN204585491U (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520161287.6U Active CN204585491U (en) | 2015-03-20 | 2015-03-20 | A kind of mould of soft-magnetic ferrite core |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105437357A (en) * | 2015-12-22 | 2016-03-30 | 南通华兴磁性材料有限公司 | Manganese zinc ferrite core forming mold |
| CN106032026A (en) * | 2015-03-20 | 2016-10-19 | 深圳振华富电子有限公司 | Soft magnetic ferrite magnetic core forming die |
-
2015
- 2015-03-20 CN CN201520161287.6U patent/CN204585491U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106032026A (en) * | 2015-03-20 | 2016-10-19 | 深圳振华富电子有限公司 | Soft magnetic ferrite magnetic core forming die |
| CN106032026B (en) * | 2015-03-20 | 2018-07-10 | 深圳振华富电子有限公司 | A kind of molding die of soft-magnetic ferrite core |
| CN105437357A (en) * | 2015-12-22 | 2016-03-30 | 南通华兴磁性材料有限公司 | Manganese zinc ferrite core forming mold |
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