CN101486078A - On-line thinning method of aluminum alloy conductive tube production - Google Patents
On-line thinning method of aluminum alloy conductive tube production Download PDFInfo
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- CN101486078A CN101486078A CNA2008101972594A CN200810197259A CN101486078A CN 101486078 A CN101486078 A CN 101486078A CN A2008101972594 A CNA2008101972594 A CN A2008101972594A CN 200810197259 A CN200810197259 A CN 200810197259A CN 101486078 A CN101486078 A CN 101486078A
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Abstract
The invention relates to an online thinning method for producing aluminum alloy conductive tubes, which comprises that: aluminum alloy is molten in a furnace; a molten liquid flows out from a chute; a thinning agent Al-Ti-B is continuously added into the chute close to the foundry furnace through a feeder; the thinning agent is fused in the chute and thins the aluminum alloy; and the thinned molten liquid is prepared into cast ingots through a casting mold. The online thinning method continuously adds the thinning agent Al-Ti-B into a fused body of the chute from the outside of the furnace during casting, and the adding speed can be freely adjusted according to the demand quantity of Ti and B in aluminum alloy components, so that the online thinning method eliminates gravity segregation of Ti particles and B particles in the thinning agent and can thin casting blank tissues to the maximum degree, and the dosage of the thinning agent is small. By adoption of the online thinning method, the absorptivity reaches 100 percent; the granularity is first level and second level; the reject rate is low; and the labor intensity can be greatly reduced.
Description
Technical field
The present invention relates to a kind of on-line thinning method of aluminum alloy conductive tube production.
Background technology
(〉=110KV) the aluminium alloy conductor of power transmission and transformation device is to adopt the thin-walled heavy caliber pipe, and material is 1060 basically, 3A21 and 6063 conventional aluminium alloys now to be used for high pressure and super-pressure in China.These aluminium alloys are as producing by former technological requirement, though the every physical performance index and the electrical property of product can satisfy the requirement of installing and using substantially, but in installation process, easily generation crystal grain is thick in the casting process because it is organized in, to finished surface is attractive in appearance certain influence arranged, also the welding quality of pipe bus in installation process caused a hidden trouble; In addition, because crystal grain is thick, through behind rolling-several procedures such as stretching, grain structure can produce trace to be changed, and makes product after operation a period of time, and the distortion that has in various degree exists.Many enterprises are that head it off has been thought many ways, and main method is when adopting aluminium alloy to cast in stove, to add the method that AL-Ti-B carries out refinement at present.Though this method has certain effect, the temperature height because of aluminium alloy requires when casting makes Ti and the B loss in stove bigger, and assimilation effect is relatively poor, and the refinement alloy is again to add behind aluminum alloy melting, thus also there is certain segregation, and the cost height.
Summary of the invention
The objective of the invention is at above-mentioned present situation, aim to provide and a kind ofly can improve installation quality, the running quality of aluminium alloy cast bus in the power transmission and transformation process, improve the on-line thinning method of aluminum alloy conductive tube production of electric conductivity.
The implementation of the object of the invention is, on-line thinning method of aluminum alloy conductive tube production, aluminium alloy is cast in stove, liquation flows out from chute, fining agent Al-Ti-B is joined the chute place of close foundry furnace in a steady stream by feeding machine, fining agent is fusion in chute, and to the aluminium alloy refinement, the liquation after the refinement becomes ingot casting through crystallizer.
The present invention is in the aluminium alloy casting process, outward continuously be added in the molten mass of chute by stove fining agent Al-Ti-B, the speed that adds can be carried out free adjustment according to the requirement of required Ti, B in the al alloy component, thereby eliminated the gravity segregation of Ti, beta particle in the fining agent, can make the casting ingot tissue reach maximum refinement, and the fining agent consumption is few.Adopt the present invention, absorptivity reaches 100%, and grain size is an I and II, and percent defective is low, can reduce labour intensity greatly.
Description of drawings
Accompanying drawing is to adopt device schematic diagram of the present invention
The specific embodiment
With reference to accompanying drawing, method of the present invention is that aluminium alloy is cast in stove, and liquation flows out from chute, fining agent Al-Ti-B is joined the chute place of close foundry furnace in a steady stream by feeding machine, fining agent is fusion in chute, and to the aluminium alloy refinement, the liquation after the refinement becomes ingot casting through crystallizer.
Lines fining agent Al-Ti-B warp wheel disc 5, deflector roll 6 feeding machines 7, conduit 8 join the chute place near foundry furnace in a steady stream.
Liquation is 9.5-15cm/ minute from the chute rate of outflow, and the speed that lines fining agent Al-Ti-B joins chute is 12-35cm/ minute.
The present invention adds traditional fining agent Al-Ti-B outward by adding to change into by stove in the stove, lines fining agent Al-Ti-B joins in the liquation of chute continuously, Ti wherein forms TiAL2 mutually with AL, and the non-spontaneous core when it becomes crystallization plays refinement cast sturcture and seam organization; Produce big forming core speed when causing melt solidifying simultaneously,, in melt, cause local temperature to rise and fall, created condition for the free and propagation of crystal by vibrated.So adopt the present invention can eliminate the gravity segregation of Ti in the fining agent, beta particle, can make the casting ingot tissue reach maximum refinement, and the fining agent consumption be few.
The applicant has made the contrast test of fining agent from the inside and outside adding of stove, and result of the test is as follows:
Fining agent adds mode absorptivity crystal grain analysis result
89-94% three, level Four in the Al-5%Ti-1%B stove
Outer 100% I and II of Al-5%Ti-1%B stove
As seen from last, thinning effect of the present invention obviously is better than thinning effect in the stove, and cost also obviously reduces.
And, adopting the present invention, the rolling percent defective of pipe material is reduced to stable below 1% by former 2.2%, and the end article quality percentage rises 5%, and has greatly reduced the labour intensity of finishing procedure.
The present invention also can be used for, and joins in other alloying component, thereby improves in the alloy casting of its inner crystal grain.
Claims (3)
1, on-line thinning method of aluminum alloy conductive tube production, it is characterized in that aluminium alloy melts in stove, liquation flows out from chute, fining agent Al-Ti-B is joined the chute place of close foundry furnace in a steady stream by feeding machine, fining agent is fusion in chute, to the aluminium alloy refinement, the thinning processing liquation becomes ingot casting through crystallizer.
2, on-line thinning method of aluminum alloy conductive tube production according to claim 1 is characterized in that lines fining agent Al-Ti-B warp wheel disc, deflector roll, feeding machine, conduit join the chute place near foundry furnace in a steady stream.
3, on-line thinning method of aluminum alloy conductive tube production according to claim 1 is characterized in that liquation is 9.5-15cm/ minute from the chute rate of outflow, and the speed that lines fining agent Al-Ti-B joins chute is 12-35cm/ minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101972594A CN101486078A (en) | 2008-10-15 | 2008-10-15 | On-line thinning method of aluminum alloy conductive tube production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101972594A CN101486078A (en) | 2008-10-15 | 2008-10-15 | On-line thinning method of aluminum alloy conductive tube production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101486078A true CN101486078A (en) | 2009-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101972594A Pending CN101486078A (en) | 2008-10-15 | 2008-10-15 | On-line thinning method of aluminum alloy conductive tube production |
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| CN (1) | CN101486078A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230254A (en) * | 2011-07-02 | 2011-11-02 | 福州大学 | Method for manufacturing aluminium pan head for spinning warp knitting machine |
| CN112551257A (en) * | 2020-10-27 | 2021-03-26 | 佛山市三水凤铝铝业有限公司 | Titanium wire conveying device |
-
2008
- 2008-10-15 CN CNA2008101972594A patent/CN101486078A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230254A (en) * | 2011-07-02 | 2011-11-02 | 福州大学 | Method for manufacturing aluminium pan head for spinning warp knitting machine |
| CN112551257A (en) * | 2020-10-27 | 2021-03-26 | 佛山市三水凤铝铝业有限公司 | Titanium wire conveying device |
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Open date: 20090722 |