CN105666030A - Replacing and repairing method for red copper cross arm electrode and cable connecting plate - Google Patents
Replacing and repairing method for red copper cross arm electrode and cable connecting plate Download PDFInfo
- Publication number
- CN105666030A CN105666030A CN201610198920.8A CN201610198920A CN105666030A CN 105666030 A CN105666030 A CN 105666030A CN 201610198920 A CN201610198920 A CN 201610198920A CN 105666030 A CN105666030 A CN 105666030A
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- China
- Prior art keywords
- plate
- copper
- electrode
- red copper
- arm electrode
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/12—Copper or alloys thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Furnace Details (AREA)
Abstract
The invention relates to a replacing and repairing method for a red copper cross arm electrode and a cable connecting plate. The replacing and repairing method includes the repairing steps that copper steel composite plates are replaced with T2 red copper plates; four strengthening studs are additionally arranged at an end between an electrode box and the cable connecting plate and are welded to an end plate of the box; four holes are drilled in the corresponding positions of each T2 red copper plate, and chambering is carried out on one face close to the electrode; the T2 red copper plates with the drilled holes are fixedly connected with the cross arm electrode through the studs; gas metal arc welding is adopted for completing welding between the T2 red copper plates and the cross arm electrode, and welding is carried out according to a certain sequence; and the three T2 red copper plates are folded to be in a shape of a Chinese character 'qi' and are attached to welding lines of the cross arm electrode box and the cable connecting plate in three directions to conduct annular welding. The process is simple and rapid, the repairing cost is low, the requirements for the external environment and condition are not high in the repairing process, safety production accidents can be effectively reduced after the method is applied, the service life of equipment is prolonged, the using cost of the equipment is reduced, and the daily maintenance cost is reduced.
Description
Technical field
The invention belongs to welding repair method technical field, relate to oneRed copper transverse arm electrode cable connecting plate Replacement and Repair method。
Background technology
At present, China's most steel mill HF refining furnace red copper electric-pole horizontal arm and cable connection plate are all copper-steel composite plate structures, cable connection plate first has to bear the weight connecting cable weight and transverse arm about 5 tons of connecting plate end, secondly also to pass through to produce the big electric current of 30000 ~ 40000A needed, electric current to be delivered on Copper steel cladding connecting plate by cable connector effectively, then is operated to transverse arm electrode. owing to copper steel electrical conductivity and thermal conductivity are inconsistent in big electric current transmittance process during production, copper-steel composite plate light plate is also inconsistent with the thermal expansion of copper coin and cold events, in production process, peeling off occur in the copper plate on cable connection plate surface and internal steel plate, the copper plate on surface is less due to thickness, in long-term superheat state so produce cracking, cause that transverse arm electrode and end junction cannot beam conduction, electrodes conduct performance is made to be deteriorated, produce high temperature scaling loss cable connection plate simultaneously, even result in the leakage of transverse arm casing cooling circulating water, directly affect STEELMAKING PRODUCTION to run.
Original renovation technique is:
1, the position polishing machine of cracking is cut, directly carry out Welding Repair on the surface of copper-steel composite plate, often less than 30 days after repairing, surface copper coin just bursts again, and safety in production is had undesirable effect, after repeatedly repairing 2 to 3 times, cause that electrode is scrapped, the normal production of impact steel-making, causes cost of equipment to increase, frequently change electrode and also increase maintenance load, cause labour cost to increase.
2, cable connection plate is cut by field service personnel with electrode casing, the copper-steel composite plate directly more renewed, cable connector and connecting plate connecting portion are overheated once to have continuous firing after installing to occur again less than 2 weeks, cause cable connection plate directly to split away off from electrode, cause the urgent blowing out accident of steel-making.
Therefore, in this case electrode cable connecting plate reparation and replacing are studied, solve this difficult problem by technological innovation means.
Summary of the invention
In order to overcome the disadvantages mentioned above of prior art, the present invention provides a kind ofRed copper transverse arm electrode cable connecting plate Replacement and Repair method, it can overcome prior artThe shortcomings such as safe operation is poor, labor intensity is high, efficiency is low, weak effect, and can all obtain good result in safety, efficiency, quality, cost of labor etc.
The technical solution adopted for the present invention to solve the technical problems is: a kind ofRed copper transverse arm electrode cable connecting plate Replacement and Repair method, its reparation step is:
1, in order to eliminate copper steel electrical conductivity and thermal conductivity is inconsistent and the thermal expansion of copper-steel composite plate light plate and copper coin and the inconsistent situation of cold events instead, copper-steel composite plate is used into T2 copper plate;
2, the termination between electrode casing and cable connection plate adds 20mm strengthening stud four pieces, and wherein bolt head lathe cuts into 30 ° of angles, is welded on casing end plate;
3, on T2 copper plate, four 24mm holes are bored in relevant position, carry out reaming to by electrode one side, and the degree of depth is 5mm, diameter 30mm;
4, more hole-drilled T2 copper plate and transverse arm electrode are adopted bolt to be attached, fix;
5, adopt gas metal-arc welding to complete welding of T2 copper plate and transverse arm electrode, weld and carry out in sequence;
6, it is converted into seven fonts with 3 pieces of δ 4mm*80mm*200mm copper plates, is attached on the weld seam in transverse arm electrode casing and three directions of cable connection plate and carries out annular solder, increase the electric conductivity between transverse arm electrode and cable connection plate;
Above step gets final product water flowing pressure testing after completing 24 hours, can be delivered for use after qualified.
The invention has the beneficial effects as follows: original transverse arm electrode repair mode repair after often less than 30 days, surface copper coin just again bursts and even peels off, affect electrodes conduct function, after repeatedly repairing 2 to 3 times, cause that electrode is scrapped, the normal production of impact steel-making, safety in production is had undesirable effect, directly contribute cost of equipment to increase, frequently change electrode and also increase maintenance work amount, cause labour cost to increase;
2, original transverse arm electrode cable connecting plate substitute mode once caused cable connection plate directly to split away off from electrode, caused the urgent blowing out accident of steel-making, and potential safety hazard is big;
3, these Replacement and Repair technique is simple and direct, rehabilitation cost is low, in repair process, external environment condition and condition is less demanding, can effectively reduce the generation of industrial accident after application, the service life of raising equipment, reduction equipment use cost, reduce daily maintenance cost;
4, this renovation technique technology is suitable for the Replacement and Repair of national each steel plant steel-making HF stove electrode cable connecting plate;
5, current China most of steel mill HF refining furnace red copper electric-pole horizontal arm and cable connection plate are all copper-steel composite plate structures, owing to rehabilitation expense is low in similar spare part repair, there is significant effect to reducing equipment use cost aspect, have promotion prospect widely.
Detailed description of the invention
The present invention is further described for embodiment below.
A kind ofRed copper transverse arm electrode cable connecting plate Replacement and Repair method, its reparation step is:
1, in order to eliminate copper steel electrical conductivity and thermal conductivity is inconsistent and the thermal expansion of copper-steel composite plate light plate and copper coin and the inconsistent situation of cold events instead, copper-steel composite plate is used into T2 copper plate;
2, the termination between electrode casing and cable connection plate adds 20mm strengthening stud four pieces, and wherein bolt head lathe cuts into 30 ° of angles, is welded on casing end plate;
3, on T2 copper plate, four 24mm holes are bored in relevant position, carry out reaming to by electrode one side, and the degree of depth is 5mm, diameter 30mm;
4, more hole-drilled T2 copper plate and transverse arm electrode are adopted bolt to be attached, fix;
5, adopt gas metal-arc welding to complete welding of T2 copper plate and transverse arm electrode, weld and carry out in sequence;
6, it is converted into seven fonts with 3 pieces of δ 4mm*80mm*200mm copper plates, is attached on the weld seam in transverse arm electrode casing and three directions of cable connection plate and carries out annular solder, increase the electric conductivity between transverse arm electrode and cable connection plate;
Above step gets final product water flowing pressure testing after completing 24 hours, can be delivered for use after qualified.
Original transverse arm electrode repair mode repair after often less than 30 days, surface copper coin just again bursts and even peels off, affect electrodes conduct function, after repeatedly repairing 2 to 3 times, cause that electrode is scrapped, the normal production of impact steel-making, safety in production is had undesirable effect, directly contribute cost of equipment to increase, frequently change electrode and also increase maintenance work amount, cause labour cost to increase;
2, original transverse arm electrode cable connecting plate substitute mode once caused cable connection plate directly to split away off from electrode, caused the urgent blowing out accident of steel-making, and potential safety hazard is big;
3, these Replacement and Repair technique is simple and direct, rehabilitation cost is low, in repair process, external environment condition and condition is less demanding, can effectively reduce the generation of industrial accident after application, the service life of raising equipment, reduction equipment use cost, reduce daily maintenance cost;
4, this renovation technique technology is suitable for the Replacement and Repair of national each steel plant steel-making HF stove electrode cable connecting plate;
5, current China most of steel mill HF refining furnace red copper electric-pole horizontal arm and cable connection plate are all copper-steel composite plate structures, owing to rehabilitation expense is low in similar spare part repair, there is significant effect to reducing equipment use cost aspect, have promotion prospect widely.
Claims (1)
1. a red copper transverse arm electrode cable connecting plate Replacement and Repair method, it is characterised in that repairing step is:
1, in order to eliminate copper steel electrical conductivity and thermal conductivity is inconsistent and the thermal expansion of copper-steel composite plate light plate and copper coin and the inconsistent situation of cold events instead, copper-steel composite plate is used into T2 copper plate;
2, the termination between electrode casing and cable connection plate adds 20mm strengthening stud four pieces, and wherein bolt head lathe cuts into 30 ° of angles, is welded on casing end plate;
3, on T2 copper plate, four 24mm holes are bored in relevant position, carry out reaming to by electrode one side, and the degree of depth is 5mm, diameter 30mm;
4, more hole-drilled T2 copper plate and transverse arm electrode are adopted bolt to be attached, fix;
5, adopt gas metal-arc welding to complete welding of T2 copper plate and transverse arm electrode, weld and carry out in sequence;
6, it is converted into seven fonts with 3 pieces of δ 4mm*80mm*200mm copper plates, is attached on the weld seam in transverse arm electrode casing and three directions of cable connection plate and carries out annular solder, increase the electric conductivity between transverse arm electrode and cable connection plate;
Above step gets final product water flowing pressure testing after completing 24 hours, can be delivered for use after qualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610198920.8A CN105666030B (en) | 2016-04-01 | 2016-04-01 | A kind of red copper transverse arm electrode cable connecting plate Replacement and Repair method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610198920.8A CN105666030B (en) | 2016-04-01 | 2016-04-01 | A kind of red copper transverse arm electrode cable connecting plate Replacement and Repair method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105666030A true CN105666030A (en) | 2016-06-15 |
| CN105666030B CN105666030B (en) | 2017-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610198920.8A Active CN105666030B (en) | 2016-04-01 | 2016-04-01 | A kind of red copper transverse arm electrode cable connecting plate Replacement and Repair method |
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| CN (1) | CN105666030B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB505292A (en) * | 1938-02-02 | 1939-05-09 | Pittsburgh Lectromelt Furnace | A method of, and means for, sintering or fritting refractory linings by means of an electric arc |
| CN2690828Y (en) * | 2004-04-08 | 2005-04-06 | 无锡宇龙冶金电炉附件厂 | Improved single arm conductive transverse arm |
| CN202372013U (en) * | 2011-12-27 | 2012-08-08 | 无锡东雄重型电炉有限公司 | Aluminum alloy conductive cross arm structure for electric furnace |
| CN202709760U (en) * | 2012-07-02 | 2013-01-30 | 郑州东方安彩耐火材料有限公司 | New structure for mounting graphite electrode and copper chuck |
| CN202955988U (en) * | 2012-11-30 | 2013-05-29 | 鞍钢股份有限公司 | Connecting mechanism for electrode chuck and electrode cross arm |
| CN203148191U (en) * | 2012-08-30 | 2013-08-21 | 树赢(国际)控股西安装备有限公司 | Low-impedance energy-saving composite conductive transverse arm |
| CN203912241U (en) * | 2014-06-11 | 2014-10-29 | 广东韶钢松山股份有限公司 | Bearer device capable of preventing electrode holder and transverse arm from ignition |
-
2016
- 2016-04-01 CN CN201610198920.8A patent/CN105666030B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB505292A (en) * | 1938-02-02 | 1939-05-09 | Pittsburgh Lectromelt Furnace | A method of, and means for, sintering or fritting refractory linings by means of an electric arc |
| CN2690828Y (en) * | 2004-04-08 | 2005-04-06 | 无锡宇龙冶金电炉附件厂 | Improved single arm conductive transverse arm |
| CN202372013U (en) * | 2011-12-27 | 2012-08-08 | 无锡东雄重型电炉有限公司 | Aluminum alloy conductive cross arm structure for electric furnace |
| CN202709760U (en) * | 2012-07-02 | 2013-01-30 | 郑州东方安彩耐火材料有限公司 | New structure for mounting graphite electrode and copper chuck |
| CN203148191U (en) * | 2012-08-30 | 2013-08-21 | 树赢(国际)控股西安装备有限公司 | Low-impedance energy-saving composite conductive transverse arm |
| CN202955988U (en) * | 2012-11-30 | 2013-05-29 | 鞍钢股份有限公司 | Connecting mechanism for electrode chuck and electrode cross arm |
| CN203912241U (en) * | 2014-06-11 | 2014-10-29 | 广东韶钢松山股份有限公司 | Bearer device capable of preventing electrode holder and transverse arm from ignition |
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| Publication number | Publication date |
|---|---|
| CN105666030B (en) | 2017-12-26 |
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