CN103320816B - Method of attachment between a kind of aluminum cell cathode steel bar and connector presser - Google Patents
Method of attachment between a kind of aluminum cell cathode steel bar and connector presser Download PDFInfo
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- CN103320816B CN103320816B CN201310208264.1A CN201310208264A CN103320816B CN 103320816 B CN103320816 B CN 103320816B CN 201310208264 A CN201310208264 A CN 201310208264A CN 103320816 B CN103320816 B CN 103320816B
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- steel bar
- attachment
- connector presser
- cathode steel
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Abstract
The present invention relates to a kind of method of attachment, especially relate to the method for attachment between a kind of aluminum cell cathode steel bar and connector presser, the method is first the bolt crimping of the Cu-Al explosion block existing in former cathode weld structure and cathode steel bar is opened, and retain the groove gap of 10-20mm, block original bolt hole with mud, weld seam left and right face and lower surface are blocked with graphite cake, and sealed with asbestos cord, finally directly carry out molten solder by steel/copper from spreading welding technology; The present invention utilizes from spreading welding and replaces crimping, in the situation that not having a power failure, can realize cathode steel bar and the permanent syndeton being effectively connected of connector presser.
Description
Technical field
The present invention relates to a kind of method of attachment, especially relate to the method for attachment between a kind of aluminum cell cathode steel bar and connector presser.
Background technology
In aluminium electroloysis industry, along with the continuous operation of electrolysis production, to cycle bath life, groove liner serious damage, insulation breakdown, equipment cannot safeguarded or runout in the situation that, must carry out electrolytic cell overhaul reason. In electrolytic cell overhaul, the little soft band bus of electric tank cathode carries out crimping with cathode steel bar by L-type copper al blasting piece and is connected, exist the pressure drop of joint interface place larger, pressure drop is between 20-50mv according to statistics, individually even up to 200mv, the phenomenons such as CURRENT DISTRIBUTION is unbalanced are the major safety risks of Aluminium Electrolysis. At present extensive use a kind of compression joint type syndeton can be referring to patent CN2615148Y, in this technology, what between cathode steel bar and connector presser, take is that bolt connects, and belongs to a kind of crimping mode. It is large that crimping mode exists resistance, the shortcoming of Pressure-drop instability. If change crimping into welding, utilize point sub-connection between rod iron and connector presser, just can effectively reduce resistance. But aluminium cell has very large magnetic field around, so conventional arc welding cannot be used. Because bonding area is larger, the thermal conductivity of copper is too strong, and conventional gas welding also cannot be used. How the solder technology with resistance advantage is applied in and between cathode steel bar and connector presser, becomes a technical barrier urgently to be resolved hurrily.
Summary of the invention
The object of the invention is to overcome the defect of above-mentioned prior art, provide a kind of utilization from spreading welding to replace crimping, in the situation that not having a power failure, can realize the forever effectively method of attachment between a kind of aluminum cell cathode steel bar and the connector presser of the syndeton of connection of cathode steel bar and connector presser.
The present invention realizes in the following way:
Method of attachment between a kind of aluminum cell cathode steel bar and connector presser, it is characterized in that: the method is first the bolt crimping of the Cu-Al explosion block existing in former cathode weld structure and cathode steel bar is opened, and retain the groove gap of 10-20mm, block original bolt hole with mud, weld seam left and right face and lower surface are blocked with graphite cake, and seal with asbestos cord, finally directly carry out molten solder by steel/copper from spreading welding technology;
Before described welding, the L-type copper coin in connector presser is preheating between 250 DEG C～400 DEG C.
The present invention has following effect:
1) method uniqueness: the method provided by the invention is first the bolt crimping of the Cu-Al explosion block existing in former cathode weld structure and cathode steel bar is opened, and retain the groove gap of 10-20mm, block original bolt hole with mud, weld seam left and right face and lower surface are blocked with graphite cake, and seal with asbestos cord, finally directly carry out molten solder by steel/copper from spreading welding technology.
2) easy and simple to handle, be easy to realize, former cathode construction is changed less, former explosion block material, aluminium soft strip material can utilize again, welding cost is lower: this Welding Structure of method provided by the invention is carried out the welding that can not have a power failure under magnetic field, solved the large shortcoming of resistance high pressure drop in former bolt connecting mode, play energy-saving and cost-reducing, the effect that reduces production costs and improve production security. Easy and simple to handle, be easy to realize, former cathode construction is changed less, and former explosion block material, aluminium soft strip material can utilize again, and welding cost is lower.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
As shown in Figure 1: the method for attachment between a kind of aluminum cell cathode steel bar and connector presser, the Cu-Al explosion block 3 existing in former negative electrode syndeton and the bolt crimping of cathode steel bar 1 are opened, and retain the groove gap of 10-20mm, block original bolt hole with mud, weld seam left and right face and lower surface are blocked with graphite cake, and seal with asbestos cord, then the L-type copper coin in connector presser is preheating between 250 DEG C～400 DEG C, then utilize conventional copper spreading welding scolder to weld, weld seam 2 together with finally forming between Cu-Al explosion block 3 and cathode steel bar 1, can play connection function and electric action. be a kind of without electric welding technology from spreading welding, the situation that can not have a power failure at electrolytic cell is welded, and completes repairing or transformation.
Steel/copper from spreading welding technique is: when connector presser welding, mother metal and crucible all need to be preheating to more than 100 DEG C, and weld width is 25mm left and right, 3 ~ 5 seconds weld intervals.
Claims (2)
1. the method for attachment between an aluminum cell cathode steel bar and connector presser, it is characterized in that: the method is first the bolt crimping of the Cu-Al explosion block existing in former cathode weld structure and cathode steel bar to be opened, and retain the groove gap of 10-20mm, block original bolt hole with mud, weld seam left and right face and lower surface are blocked with graphite cake, and seal with asbestos cord, finally directly carry out molten solder by steel/copper from spreading welding technology.
2. the method for attachment between a kind of aluminum cell cathode steel bar as claimed in claim 1 and connector presser, is characterized in that: before described welding, the L-type copper coin in connector presser is preheating between 250 DEG C～400 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310208264.1A CN103320816B (en) | 2013-05-30 | 2013-05-30 | Method of attachment between a kind of aluminum cell cathode steel bar and connector presser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310208264.1A CN103320816B (en) | 2013-05-30 | 2013-05-30 | Method of attachment between a kind of aluminum cell cathode steel bar and connector presser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103320816A CN103320816A (en) | 2013-09-25 |
| CN103320816B true CN103320816B (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310208264.1A Expired - Fee Related CN103320816B (en) | 2013-05-30 | 2013-05-30 | Method of attachment between a kind of aluminum cell cathode steel bar and connector presser |
Country Status (1)
| Country | Link |
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| CN (1) | CN103320816B (en) |
Citations (10)
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| CN2700343Y (en) * | 2003-12-11 | 2005-05-18 | 四川启明星铝业有限责任公司 | Cathode connecting device of aluminium cell |
| CN1651610A (en) * | 2004-12-28 | 2005-08-10 | 中国铝业股份有限公司 | Welding method for major repairing cathode of large aluminium electrolytic bath |
| CN1772960A (en) * | 2005-11-02 | 2006-05-17 | 中国铝业股份有限公司 | Method for thermite welding aluminium electrolytic cell cathode steel bar |
| CN2923147Y (en) * | 2006-06-02 | 2007-07-18 | 辽宁斯克赛德电气设备制造有限公司 | Aluminium-copper press-connection device |
| CN101249585A (en) * | 2007-12-10 | 2008-08-27 | 中国铝业股份有限公司 | Electrified welding method of aluminum cell cathode steel bar |
| JP2009012008A (en) * | 2007-06-29 | 2009-01-22 | Sukematsu Iwashita | Joining method for steel bar |
| CN101474719A (en) * | 2008-12-10 | 2009-07-08 | 青铜峡铝业集团有限公司 | In situ self-spread welding repair method of aluminum mother plate |
| CN101733565A (en) * | 2008-11-18 | 2010-06-16 | 中冶天工建设有限公司 | Electrifying welding method of aluminium bus of electrolyzer |
| CN102806425A (en) * | 2012-08-22 | 2012-12-05 | 黄河鑫业有限公司 | Method for welding cathode flexible bus of aluminum electrolysis cell without series power failure |
| CN202766632U (en) * | 2012-06-21 | 2013-03-06 | 贵阳铝镁设计研究院有限公司 | Cathode steel bar connecting plate structure of electrolytic bath |
-
2013
- 2013-05-30 CN CN201310208264.1A patent/CN103320816B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2700343Y (en) * | 2003-12-11 | 2005-05-18 | 四川启明星铝业有限责任公司 | Cathode connecting device of aluminium cell |
| CN1651610A (en) * | 2004-12-28 | 2005-08-10 | 中国铝业股份有限公司 | Welding method for major repairing cathode of large aluminium electrolytic bath |
| CN1772960A (en) * | 2005-11-02 | 2006-05-17 | 中国铝业股份有限公司 | Method for thermite welding aluminium electrolytic cell cathode steel bar |
| CN2923147Y (en) * | 2006-06-02 | 2007-07-18 | 辽宁斯克赛德电气设备制造有限公司 | Aluminium-copper press-connection device |
| JP2009012008A (en) * | 2007-06-29 | 2009-01-22 | Sukematsu Iwashita | Joining method for steel bar |
| CN101249585A (en) * | 2007-12-10 | 2008-08-27 | 中国铝业股份有限公司 | Electrified welding method of aluminum cell cathode steel bar |
| CN101733565A (en) * | 2008-11-18 | 2010-06-16 | 中冶天工建设有限公司 | Electrifying welding method of aluminium bus of electrolyzer |
| CN101474719A (en) * | 2008-12-10 | 2009-07-08 | 青铜峡铝业集团有限公司 | In situ self-spread welding repair method of aluminum mother plate |
| CN202766632U (en) * | 2012-06-21 | 2013-03-06 | 贵阳铝镁设计研究院有限公司 | Cathode steel bar connecting plate structure of electrolytic bath |
| CN102806425A (en) * | 2012-08-22 | 2012-12-05 | 黄河鑫业有限公司 | Method for welding cathode flexible bus of aluminum electrolysis cell without series power failure |
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| Publication number | Publication date |
|---|---|
| CN103320816A (en) | 2013-09-25 |
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