CN1283950A - Technology for making magnetically conductive iron core of loudspeake - Google Patents
Technology for making magnetically conductive iron core of loudspeake Download PDFInfo
- Publication number
- CN1283950A CN1283950A CN 99111212 CN99111212A CN1283950A CN 1283950 A CN1283950 A CN 1283950A CN 99111212 CN99111212 CN 99111212 CN 99111212 A CN99111212 A CN 99111212A CN 1283950 A CN1283950 A CN 1283950A
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- magnet core
- conducting magnet
- sand
- surface treatment
- loud speaker
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- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
A technology for manufacturing the magnetic core in loudspeaker includes such steps as selecting raw materials, smelting, making sand mould, casting, cooling, removing sand from surface, cutting, surface treating, machining and surface treating. Its advantages are high magnetic conductivity and high finish quality.
Description
The present invention relates to the manufacture method of the magnetic core in the essential electronic element in the electricity, the manufacture method of the conducting magnet core in particularly a kind of loud speaker.
The general method that all adopts forging and pressing of traditional conducting magnet core, producing owing to forging and pressing is directly to allow blank use the forcing press forging and molding after heating or after softening the processing, the metal drag is big, so it is simple in structure with the conducting magnet core that these class methods are made, deflection is little, and flake structure can not be shaped, and owing to limited by forging die, the overhead kick structure can't the demoulding, and some help the structure of conducting magnet core performance and can't implement.
At the deficiencies in the prior art part, the purpose of this invention is to provide the method manufacturing of the manufacture method-employing casting of the conducting magnet core in a kind of loud speaker.Because all method production of available casting of structure of any complexity, and cast and can organize the structure that the die forging pressure can't be made, therefore, can on the structure of product, have breakthrough, be beneficial to the magnetic property of conducting magnet core.
To achieve the above object, technical scheme of the present invention is as follows:
The manufacture method of the conducting magnet core in a kind of loud speaker is carried out the work of two aspects at first simultaneously, on the one hand, choose suitable furnace charge and melt bright, on the other hand, preparation sand and moulding, mould assembly; Pour into a mould then, cooling, remove the sand grains on surface, adopt the method for cutting that production sharing is single, then single product is carried out surface treatment, the check product appearance, underproof removing is melted down, pieces O.K. carries out machine work to the higher part outer surface of required precision, carries out surface treatment at last.
Described furnace charge can adopt the steel scrap close with the conducting magnet core composition.
Temperature is controlled in 1550 ℃ to 1660 ℃ the scope during described melting.
Precoated sand is adopted in described moulding.
Surface treatment step after the described machine work can be selected different surface treatment methods as requested, as the zinc-plated five colours, white zine, Dianbai, baking vanish etc.
Because adopt above-mentioned method, because all method production of available casting of structure of any complexity, and cast and can organize the structure that the die forging pressure can't be made, therefore, can on the structure of product, have breakthrough, be beneficial to the magnetic property of conducting magnet core.The precoated sand moulding of adopting belongs to New Casting Technique, because precoated sand intensity height can be realized removable flask moulding, saved and made the case expense, shortened technological process, and the precoated sand moulding to water the product surface that outpours highly polished, allowance is few, can save the production cost of producing qualified foundry goods relatively.
The present invention is further detailed explanation below in conjunction with drawings and Examples:
Fig. 1 is a process chart of the present invention.
As shown in Figure 1, the method of making the conducting magnet core in the loud speaker is as follows: at first be to select furnace charge, must adopt the steel scrap close with the conducting magnet core composition, because the low magnetic conduction better of the phosphorus content of conducting magnet core, select for use the low steel scrap of phosphorus content just needn't be modified when melting like this, what adopt when smelting scrap steel be the medium-frequency induction furnace melting, favourable to production environment, can more effective control temperature and molten steel composition, temperature must be controlled in 1550 ℃ and the 1660 ℃ of scopes during melting.Like this, pour into a mould out product rate of finished products height, after with aluminium deoxidation, liquid steel temperature is just can pour into a mould between 1550 ℃ to 1660 ℃.Meanwhile be equipped with sand, it is simple to be equipped with the sand process, this sand can directly use without mulling, employing equipment is core shooter during moulding, self-control heating core box is made simple and easy machine by oneself, and core shooter is controlled temperature about 250 ℃, can inject precoated sand in the core shooter, guarantee that by the mould in the core shooter sand mold size is accurate.Sand mold divides amphitypy up and down, then the upper and lower type mould assembly of sand mold, builds up 6 to 8 layers again, places one above and waters cup.Like this, the cast product can improve molten steel Utilization rate.Qualified molten steel is injected sand mold behind the mould assembly, must cooling 2 to 8 hours, allow product shaping, and prevent distortion, sand removal can be clear with sand cleaning machine, also available artificial sand removal, because the precoated sand collapsibility is good, sand removal is easy.With regard to products of separated, can adopt cutter special or sawing machine behind the clear intact sand, single production sharing.Then single product is carried out surface treatment, remove surplus sand and oxide skin in surface and the hole, the products obtained therefrom surface is brighter and cleaner, uses equipment to be sand-blasting machine or shot-blasting machine.Check product appearance then, substandard product is removed and is melted down, and pieces O.K. is sent to machine work.Processing part outer surface during machine work, and remainder need not be processed owing to reach product requirement, machining apparatus is meter specially lathe or lathe.Carry out surface treatment after the machine work, select ten thousand different methods by customer requirement, as the zinc-plated five colours, white zine, Dianbai, baking vanish etc., to prevent the oxidation of conducting magnet core top layer, and attractive and durable, electroplate back inspection eventually, by every index warehousing after passing such as the size of product figure requirement, fineness.
Claims (5)
1, the manufacture method of the conducting magnet core in a kind of loud speaker is characterized in that: carry out the work of two aspects at first simultaneously, on the one hand, choose suitable furnace charge and melt bright, on the other hand, preparation sand and moulding, mould assembly; Pour into a mould then, cooling, remove the sand grains on surface, adopt the method for cutting that production sharing is single, then single product is carried out surface treatment, the check product appearance, underproof removing is melted down, pieces O.K. carries out machine work to the higher part outer surface of required precision, carries out surface treatment at last.
2, the manufacture method of the conducting magnet core in the loud speaker according to claim 1 is characterized in that described furnace charge can adopt the steel scrap close with the conducting magnet core composition.
3, the manufacture method of the conducting magnet core in the loud speaker according to claim 1, temperature is controlled in 1550 ℃ to 1660 ℃ the scope when it is characterized in that described melting.
4, the method for the conducting magnet core of manufacturing inside loudspeakers according to claim 1 is characterized in that described step of overall modelling adopts precoated sand.
5, the method for the conducting magnet core of manufacturing inside loudspeakers according to claim 1 is characterized in that the surface treatment step after the described machine work can be selected different surface treatment methods as requested, as the zinc-plated five colours, white zine, Dianbai, baking vanish etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99111212 CN1283950A (en) | 1999-08-09 | 1999-08-09 | Technology for making magnetically conductive iron core of loudspeake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99111212 CN1283950A (en) | 1999-08-09 | 1999-08-09 | Technology for making magnetically conductive iron core of loudspeake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1283950A true CN1283950A (en) | 2001-02-14 |
Family
ID=5274954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99111212 Pending CN1283950A (en) | 1999-08-09 | 1999-08-09 | Technology for making magnetically conductive iron core of loudspeake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1283950A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640127B (en) * | 2009-07-02 | 2011-06-15 | 慈溪市龙山汽配有限公司 | Manufacturing method of moving iron core of loudspeaker |
| DK179276B1 (en) * | 2013-06-19 | 2018-03-26 | Dansk Skalform As | Fully cast speaker cabinet with integrated bass reflex produced by sand casting in a gray cast iron alloy. CSRC |
-
1999
- 1999-08-09 CN CN 99111212 patent/CN1283950A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640127B (en) * | 2009-07-02 | 2011-06-15 | 慈溪市龙山汽配有限公司 | Manufacturing method of moving iron core of loudspeaker |
| DK179276B1 (en) * | 2013-06-19 | 2018-03-26 | Dansk Skalform As | Fully cast speaker cabinet with integrated bass reflex produced by sand casting in a gray cast iron alloy. CSRC |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |