CN115896640A - Pure iron energy-saving anode steel claw material and heat treatment method and application thereof - Google Patents
Pure iron energy-saving anode steel claw material and heat treatment method and application thereof Download PDFInfo
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- CN115896640A CN115896640A CN202211724039.9A CN202211724039A CN115896640A CN 115896640 A CN115896640 A CN 115896640A CN 202211724039 A CN202211724039 A CN 202211724039A CN 115896640 A CN115896640 A CN 115896640A
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- steel claw
- heat treatment
- pure iron
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 54
- 239000010959 steel Substances 0.000 title claims abstract description 54
- 210000000078 claw Anatomy 0.000 title claims abstract description 53
- 239000000463 material Substances 0.000 title claims abstract description 30
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 238000010438 heat treatment Methods 0.000 title claims abstract description 18
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 238000005516 engineering process Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000005242 forging Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 abstract description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052799 carbon Inorganic materials 0.000 abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 6
- 229910001208 Crucible steel Inorganic materials 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 229910000746 Structural steel Inorganic materials 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 238000005868 electrolysis reaction Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 230000007847 structural defect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Forging (AREA)
Abstract
The invention discloses a pure iron energy-saving anode steel claw material, a heat treatment method and application thereof. Compared with the traditional steel claw structure, the anode steel claw manufactured by the method has high conductivity, the pressure drop value can be reduced by more than 15 percent, the strength and the rigidity can meet the mechanical property requirements of electrolytic production, and the prepared anode steel claw can be normally assembled with the existing anode carbon block of an aluminum factory without influencing the whole production process flow.
Description
Technical Field
The invention relates to the technical field of aluminum electrolytic cell anode steel claws, in particular to a pure iron energy-saving anode steel claw material and a heat treatment method and application thereof.
Background
How to reduce carbon emission and produce with low energy consumption becomes the key for the survival of the enterprises. The voltage drop of the electrolytic cell is composed of anode voltage drop, interelectrode voltage, cathode voltage drop, voltage drop of buses around the electrolytic cell, electrolytic cell effect and the sharing voltage of the buses of the electrolytic cell series. The anode pressure drop comprises anode carbon block pressure drop, contact pressure drop between iron and carbon, steel-aluminum explosion welding pressure drop, aluminum guide rod pressure drop, small box clamp pressure drop and steel claw pressure drop, wherein the steel claw pressure drop value is generally between 70 and 80mv, and a certain consumption reduction space is provided. Therefore, the anode steel claw of the aluminum electrolytic cell is technically upgraded and designed from two aspects of material and structure, and the pressure drop of the steel claw is reduced, so that the aims of energy conservation and consumption reduction of the aluminum electrolytic cell are fulfilled.
At present, the prior domestic aluminum electrolysis plants basically adopt ZG200-400 cast steel anode steel claws. The structure has good welding performance, toughness and plasticity, and can basically meet the performance requirements required by electrolytic production. However, the anode steel claw for cast steel is basically made of scrap steel and miscellaneous steel, so that the content of impurity elements such as C, S, P and the like in the steel claw is too high, and the resistance of the steel claw is increased. On the other hand, the steel claw is easy to have structural defects such as shrinkage cavity, inclusion, shrinkage porosity and the like in the casting process, and the defects can reduce the effective conductive area of the steel claw and increase the pressure drop value of the steel claw. In addition, because the cast steel claw is mostly cast by using scrap steel, the strength is lower, the deformation damage rate of the cast steel claw in the production process of electrolytic aluminum is up to 20-35%, and the labor cost and the working strength are greatly increased by repairing the cast steel claw.
As the yield strength of the Q235 structural steel is 235MPa, the mechanical property and the mechanical strength are better. In recent years, aluminum electrolysis enterprises have started to research the use of profile steel made of Q235 material for making anode steel claws. Compared with the traditional steel casting claw, the structure can eliminate the defects of slag inclusion, sand holes, air holes and the like of the steel casting claw to a certain extent, but because the carbon content in the Q235 structural steel is higher, the resistivity is higher, the voltage value of the Q235 structural steel claw is larger, and the reduction of the energy consumption of an electrolytic cell is not facilitated after long-term use.
Disclosure of Invention
The invention aims to: the pure iron energy-saving anode steel claw material can meet the requirement of normal electrolysis production, and can reduce the voltage drop value of the anode steel claw, further reduce the cell voltage and realize the energy saving and consumption reduction of the electrolytic cell.
The invention is realized by the following steps: the material is a pure iron material, wherein C is more than or equal to 0.003% and less than or equal to 0.004%, mn is more than or equal to 0.09% and less than or equal to 0.12%, si is more than or equal to 0.007% and less than or equal to 0.01%, P is more than or equal to 0.003% and less than or equal to 0.005%, S is more than or equal to 0.007% and less than or equal to 0.005%, ni is more than or equal to 0.01% and less than or equal to 0.01%, cr is more than or equal to 0.007% and less than or equal to 0.01%, cu is more than or equal to 0.005% and less than or equal to 0.01%, al is more than or equal to 0.005% and less than or equal to 0.01%, O is more than or equal to 0.0034%, N is more than or equal to 0.0038%, as is more than or equal to 0.0005% and less than or equal to 0.001%, sn is more than or equal to 0.0005% and less than or equal to 0.001%, pb is less than or equal to 0.0001%, bi is more than or equal to 0.0005% and less than or equal to 0.0001%, zn is equal to 0.0005% and less than or equal to 0.0005%. .
The heat treatment method of the pure iron energy-saving anode steel claw material comprises the steps of forging the material for 30min by using an air hammer to enable the material to generate plastic deformation; and (3) performing heat treatment on the forged material at 700 ℃ for 2h, then heating to 800 ℃ for 1h, and finally cooling to room temperature.
The application of the material treated by the heat treatment method comprises the steps of manufacturing the material after the heat treatment into a steel claw beam and a steel claw head, and connecting the manufactured steel claw beam and the steel claw head by adopting a full-section friction full-weld technology.
Because the steel claw beam and the steel claw head are connected by adopting a full-section friction full-welding technology, an aluminum steel explosion welding piece is not needed, a welding surface with a boss structure is not needed to be arranged like a traditional structure, the boss structure is not arranged on the surface, the pressure drop can be effectively reduced, and the beam is simple in form and easy to process. Meanwhile, the height of the pure iron energy-saving steel claw head is reduced by 20mm compared with the existing anode steel claw, the inward-bending deformation of the anode steel claw head can be reduced, and the repair frequency of the anode steel claw is reduced.
The anode steel claw manufactured by the method has high conductivity, the pressure drop value can be reduced by more than 15 percent, the strength and the rigidity can meet the mechanical property requirements of electrolytic production, and the prepared anode steel claw can be normally assembled with the existing anode carbon block of an aluminum factory without influencing the whole production process flow.
The specific implementation mode is as follows:
the embodiment of the invention comprises the following steps: the energy-saving anode steel claw material is made of pure iron, wherein C is more than or equal to 0.003 percent and less than or equal to 0.004 percent, mn is more than or equal to 0.09 percent and less than or equal to 0.12 percent, si is more than or equal to 0.007 percent and less than or equal to 0.01 percent, P is more than or equal to 0.003 percent and less than or equal to 0.005 percent, S is more than or equal to 0.007 percent and less than or equal to 0.007 percent, ni is more than or equal to 0.005 percent and less than or equal to 0.01 percent, cr is more than or equal to 0.007 percent and less than or equal to 0.01 percent, cu is more than or equal to 0.005 percent and less than or equal to 0.01 percent, al is more than or equal to 0.005% and less than or equal to 0.01%, O is more than or equal to 0.001% and less than or equal to 0.0034%, N is more than or equal to 0.001% and less than or equal to 0.0038%, as is more than or equal to 0.0005% and less than or equal to 0.001%, sn is more than or equal to 0.0005% and less than or equal to 0.001%, pb is more than or equal to 0.0005% and less than or equal to 0.0001%, bi is more than or equal to 0.0005% and less than or equal to 0.0001%, zn is more than or equal to 0.0005% and less than or equal to 0.001%, and Sb is more than or equal to 0.0005% and less than or equal to 0.001%. .
A heat treatment method of pure iron energy-saving anode steel claw material,
1) Forging the material for 30min by using an air hammer to enable the material to generate plastic deformation;
2) Carrying out heat treatment on the forged material at 700 ℃ for 2h;
3) Then heating to 800 ℃ for heat treatment for 1h, and finally cooling to room temperature.
The materials processed by the heat treatment method are manufactured into a steel claw beam and a steel claw head, and the manufactured steel claw beam and the steel claw head are connected by adopting a full-section friction full-weld technology.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and therefore the scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
1. The pure iron energy-saving anode steel claw material is characterized in that: the material is a pure iron material, wherein C is more than or equal to 0.003% and less than or equal to 0.004%, mn is more than or equal to 0.09% and less than or equal to 0.12%, si is more than or equal to 0.007% and less than or equal to 0.01%, P is more than or equal to 0.003% and less than or equal to 0.005%, S is more than or equal to 0.003% and less than or equal to 0.007%, ni is more than or equal to 0.005% and less than or equal to 0.01%, cr is more than or equal to 0.007% and less than or equal to 0.01%, cu is more than or equal to 0.005% and less than or equal to 0.01%, al is more than or equal to 0.005% and less than or equal to 0.01%, O is more than or equal to 0.0034%, N is more than or equal to 0.001% and less than or equal to 0.0038%, as is more than or equal to 0.0005% and less than or equal to 0.001%, sn is more than or equal to 0.0005% and less than or equal to 0.0001%, pb is more than or equal to 0.0005% and less than or equal to 0.0001%, bi is more than or equal to 0.0005% and less than or equal to 0.001%, zn is equal to 0.001%.
2. The heat treatment method of the pure iron energy-saving anode steel claw material as claimed in claim 1, characterized in that: forging the material for 30min by using an air hammer to enable the material to generate plastic deformation; and (3) performing heat treatment on the forged material at 700 ℃ for 2h, then heating to 800 ℃ for 1h, and finally cooling to room temperature.
3. Use of a material treated by the heat treatment method according to claim 2, characterized in that: and manufacturing the heat-treated material into a steel claw beam and a steel claw head, and connecting the manufactured steel claw beam and the steel claw head by adopting a full-section friction full-weld technology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211724039.9A CN115896640A (en) | 2022-12-30 | 2022-12-30 | Pure iron energy-saving anode steel claw material and heat treatment method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211724039.9A CN115896640A (en) | 2022-12-30 | 2022-12-30 | Pure iron energy-saving anode steel claw material and heat treatment method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115896640A true CN115896640A (en) | 2023-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211724039.9A Pending CN115896640A (en) | 2022-12-30 | 2022-12-30 | Pure iron energy-saving anode steel claw material and heat treatment method and application thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103305747A (en) * | 2013-06-26 | 2013-09-18 | 李会民 | Steel bar or steel claw section for electric conduction of electrolytic aluminum and manufacturing method of steel bar or steel claw section |
| CN103397343A (en) * | 2013-08-06 | 2013-11-20 | 李中华 | Anode steel claw for aluminum electrolysis |
| CN203462142U (en) * | 2013-08-06 | 2014-03-05 | 李中华 | Novel aluminum electrolytic anode steel claw |
| CN106521557A (en) * | 2016-11-01 | 2017-03-22 | 秦皇岛秦冶重工有限公司 | Anode steel stud for electrolytic aluminum |
-
2022
- 2022-12-30 CN CN202211724039.9A patent/CN115896640A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103305747A (en) * | 2013-06-26 | 2013-09-18 | 李会民 | Steel bar or steel claw section for electric conduction of electrolytic aluminum and manufacturing method of steel bar or steel claw section |
| CN103397343A (en) * | 2013-08-06 | 2013-11-20 | 李中华 | Anode steel claw for aluminum electrolysis |
| CN203462142U (en) * | 2013-08-06 | 2014-03-05 | 李中华 | Novel aluminum electrolytic anode steel claw |
| CN106521557A (en) * | 2016-11-01 | 2017-03-22 | 秦皇岛秦冶重工有限公司 | Anode steel stud for electrolytic aluminum |
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