CN1456696A - Lead-based alloy deep deoxygenating process - Google Patents
Lead-based alloy deep deoxygenating process Download PDFInfo
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- CN1456696A CN1456696A CN 03119075 CN03119075A CN1456696A CN 1456696 A CN1456696 A CN 1456696A CN 03119075 CN03119075 CN 03119075 CN 03119075 A CN03119075 A CN 03119075A CN 1456696 A CN1456696 A CN 1456696A
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- lead
- alloy
- deoxidation
- base alloy
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Abstract
A process for deeply deoxidizing Pb-base alloy includes such steps as proportioning the components of alloy, adding Na or NaOH as deoxidant, and deoxidizing at proper temp. Its advantages are simple process, low cost and high effect on improving alloy properties.
Description
Affiliated technical field
The invention relates to the alloy deoxidation particularly major ingredient be the deoxidization technique of plumbous alloy.
Background technology
Lead 2-base alloy is the main raw material of battery grid, because the development of The Storage Battery Industry in China at present, various high-performance store batteries are come out one after another, and requires also more and more higher to the lead 2-base alloy of making battery grid.Contain oxide compound as common metal and can cause degradation, lead 2-base alloy can make alloy contain a spot of oxygen element in process of production, comprise in oxygen element and the alloy that plumbous composition exists with oxide compound formation, cause alloy junction Jingjing grain thick inhomogeneous, the casting properties variation, influence the quality of battery grid when serious, even can't be used for battery grid.By retrieval, about in the alloy deoxidation technology, yet there are no deoxidization technique at present about lead 2-base alloy.
Summary of the invention
The purpose of this invention is to provide a kind of lead 2-base alloy oxygen element content that is used to reduce, improve the lead 2-base alloy degree of depth deoxidization technique of lead 2-base alloy crystallization crystal grain situation and physics, chemical property.
Technical scheme of the present invention is: producing with melting pan in the process of lead 2-base alloy, after the various proportioning components of lead 2-base alloy are finished, the temperature of alloy liquation is reduced to 410-460 ℃, add the reductor that accounts for alloy liquation weight 0.01-0.05% then, and stirred 20-45 minute, reductor is that Na and the NaOH of weight ratio Na: NaOH=1: 1-2.5 forms.Promptly finish deoxidation after the stirring, can carry out flow processs such as lead 2-base alloy subsequent production technology such as ingot casting after finishing deoxidation.
It is reductor that the present invention adopts Na, NaOH, as active metal and oxyhydroxide thereof, oxide compound to inactive various compositions in the lead 2-base alloy has very strong desoxydatoin, Na and Na ion at first with the alloy liquation in oxygen generate basic oxide, again further with the alloy liquation in the acidic oxide reaction generate the infusible salt and form scum silica frost.By suitable proportioning Na and NaOH, promptly deoxidation effect preferably can be arranged, reduce the deoxidation cost again, and do not influence the quality of lead 2-base alloy again.Be cooled to 410-460 ℃ and stir certain hour more than 540 ℃ from former, can make deoxidation effect the best, cooling also can prevent the volatilization of the alloy ingredient composition that particularly content is very little such as antimony, selenium, reduces the wastage and energy consumption.If the temperature height can make the sodium volatilization fast during deoxidation, reduce deoxidation effect, too low-alloy viscosity is big for temperature, unfavorable operation.Churning time is short, and deoxidation is incomplete, and churning time is long, the energy consumption height, and composition has volatilization, and easily reoxidizes phenomenon.After each proportioning components of alloy is finished, add reductor, can guarantee the thoroughness of deoxidation, reoxidize again when preventing from after deoxidation, to add other alloy ingredients.After deoxidation is finished, the bigger alloy ingredient of additional proportion again, but can carry out the adjustment of the alloy ingredient of trace.
This technology also can be used for the deoxidation of finished product lead 2-base alloy, and this moment, the finished product lead 2-base alloy just was the equal of a liquation of having finished proportioning, and the process of step elder generation's fusing is just arranged, and the essence of its deoxidization technique is constant.
Element such as sodium mainly floats over the surface of liquation after the deoxidation with compound scum silica frost form, and the volatilization of above-mentioned other alloy ingredients also mainly is the form of compound scum silica frost, and having very, small portion aloft volatilizees with particulate form.Examine factually, oxide slag does not account for more than the 10%-15% of alloy liquation during deoxidation, is below the 3%-4% after the deoxidation.Detect through Beijing Iron and Steel Research Geueral Inst, the lead 2-base alloy crystallization crystal grain after the deoxidation is fine and closely woven, even.
Owing to utilize the desoxydatoin of active metal, selected technologies such as suitable deoxidation opportunity and temperature, make deoxidation effect of the present invention good, technical process is simple, expense is low, has reached minimizing lead 2-base alloy oxygen element content, improves the purpose of lead 2-base alloy crystallization crystal grain situation and physics, chemical property.
Embodiment
Further specify technological process of the present invention below in conjunction with embodiment.
Embodiment 1: producing with melting pan in the process of lead 2-base alloy, after the various proportioning components of lead 2-base alloy are finished, the temperature of alloy liquation is reduced to 410-460 ℃, add the reductor that accounts for alloy liquation weight 0.01% then, and stirred 45 minutes, reductor is weight ratio Na: NaOH=1: 1 Na and NaOH form, and promptly finish deoxidation after the stirring, can carry out flow processs such as lead 2-base alloy subsequent production technology such as ingot casting after finishing deoxidation.The compound of finishing oxygen element and sodium after the deoxidation floats over the surface of liquation with the scum silica frost form, and scum silica frost can be removed, but for preventing that alloy from oxidation taking place again, should keep, and adopts to extract from the bottom as the mode of siphon is extracted the alloy liquation out afterwards ingot casting.
Embodiment 2: technical process is the same, and the reductor of adding accounts for 0.05% of liquation weight, stirs 20 minutes, and reductor is weight ratio Na: NaOH=1: 2.5 Na and NaOH form.
After the various proportioning components of lead 2-base alloy were finished, the composition analyzing and testing was carried out in sampling earlier, and carries out deoxidation again after adjusting each composition.
When adding reductor, can measure NaOH earlier, quick metering Na drops in the melting pan Na and NaOH and stirring, to reduce the aerial oxidation of Na then as early as possible again.For in order to be effective, available bell jar process adds reductor.
Stirring velocity should be below 120 rev/mins.
Claims (1)
1. lead 2-base alloy degree of depth deoxidization technique, it is characterized in that: producing with melting pan in the process of lead 2-base alloy, after the various proportioning components of lead 2-base alloy are finished, the temperature of alloy liquation is reduced to 410-460 ℃, add the reductor that accounts for alloy liquation weight 0.01-0.05% then, and stirred 20-45 minute, reductor is that Na and the NaOH of weight ratio Na: NaOH=1: 1-2.5 forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031190758A CN1187461C (en) | 2003-05-14 | 2003-05-14 | Lead-based alloy deep deoxygenating process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031190758A CN1187461C (en) | 2003-05-14 | 2003-05-14 | Lead-based alloy deep deoxygenating process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1456696A true CN1456696A (en) | 2003-11-19 |
| CN1187461C CN1187461C (en) | 2005-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031190758A Expired - Lifetime CN1187461C (en) | 2003-05-14 | 2003-05-14 | Lead-based alloy deep deoxygenating process |
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| CN (1) | CN1187461C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103695688A (en) * | 2013-12-24 | 2014-04-02 | 广西南宁市蓝天电极材料有限公司 | Deoxidation process of lead alloy positive plate for electrolysis |
| CN105886818A (en) * | 2016-05-13 | 2016-08-24 | 广西宜州申亚锰业有限责任公司 | Deoxidizing technology of lead alloy anode plate for electrolysis |
| CN110144494A (en) * | 2019-06-06 | 2019-08-20 | 江苏海瑞电源有限公司 | A kind of high-performance sheath lead-containing alloy and preparation method thereof |
-
2003
- 2003-05-14 CN CNB031190758A patent/CN1187461C/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103695688A (en) * | 2013-12-24 | 2014-04-02 | 广西南宁市蓝天电极材料有限公司 | Deoxidation process of lead alloy positive plate for electrolysis |
| CN105886818A (en) * | 2016-05-13 | 2016-08-24 | 广西宜州申亚锰业有限责任公司 | Deoxidizing technology of lead alloy anode plate for electrolysis |
| CN110144494A (en) * | 2019-06-06 | 2019-08-20 | 江苏海瑞电源有限公司 | A kind of high-performance sheath lead-containing alloy and preparation method thereof |
| CN110144494B (en) * | 2019-06-06 | 2021-08-06 | 江苏海瑞电源有限公司 | High-performance lead-based alloy for sheath and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN1187461C (en) | 2005-02-02 |
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Granted publication date: 20050202 |