CN1262028C - Rareearth lead based grid alloy and mfg. process thereof - Google Patents
Rareearth lead based grid alloy and mfg. process thereof Download PDFInfo
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- CN1262028C CN1262028C CNB031080200A CN03108020A CN1262028C CN 1262028 C CN1262028 C CN 1262028C CN B031080200 A CNB031080200 A CN B031080200A CN 03108020 A CN03108020 A CN 03108020A CN 1262028 C CN1262028 C CN 1262028C
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The present invention relates to rare-earth lead based grid alloy and a manufacturing method thereof. The method comprises the following steps: 0.02 to 0.06 wt% of rare-earth elements, 0.4 to 1.2 wt% of Sn and 98.65 to 99.56 wt% of Pb are smelted at the temperature of 400 to 650 DEG C; when all the elements are melted, 0.02 to 0.09 wt% of Ca is added in alloy melting liquids by a pressing-in method; when the Ca is completely melted, the alloy liquids are cast in a rapid metal cooling mould, the cooling speed of the alloy liquids is controlled between 10 <2> k/s and 10<5> k/s, and the temperature of the alloy liquids is cooled to the room temperature. The manufactured rare-earth lead based grid alloy comprises the components of 0.02 to 0.09 wt % of Ca, 0.4 to 1.2 wt% of Sn, 0.02 to 0.06 wt% of rare-earth elements and 98.65 to 99.56 wt% of Pb. Rare earth is added in the alloy, so the strength and the corrosion-resistance properties are obviously enhanced, the tensile strength can reach 45Mpa, the alloy has favorable corrosion-resistance properties in sulphuric acids, and the alloy can meet the requirements of maintenance-free lead-acid batteries for grid alloy.
Description
One, technical field
The invention belongs to material engineering, particularly a kind of rare earth lead base grid alloy and preparation technology thereof.
Two, background technology
Grid is the key element of lead-acid battery, and it has decisive influence to the performance of battery.Lead-antimony alloy once was a stock of making grid.But because it can't satisfy non-maintaining requirement and be faced with superseded.At present, the material of worldwide making grid mainly contains lead-antimony alloy, lead-calcium alloy and the plumbous calcium tin series alloy of low antimony.Particularly plumbous calcium tin series alloy has become present research emphasis and developing direction.In order further to improve the performance of plumbous calcium tin series alloy, can in alloy, add various elements.Popular element comprises Al, Ag, Bi, Se, As, elements such as Sr.It is on the high side a bit that these add element, as Ag; Some is bigger to environmental hazard, as As; Some then can not improve intensity and decay resistance simultaneously.Common fusion casting is then generally adopted in the processing of material.
Three, summary of the invention
The object of the present invention is to provide a kind ofly when improving chemical property, improve the mechanical property of alloy grid, thereby alleviate the weight of grid, improve the rare earth lead base grid alloy and the preparation technology thereof of the specific energy of lead-acid battery.
For achieving the above object, the preparation technology that the present invention adopts is: with percentage by weight is 0.02～0.06% rare earth element, and 0.4～1.2% Sn and 98.65～99.56% Pb are 400～650 ℃ of following meltings; Treat that each element fusing back employing plunging with percentage by weight is: 0.02～0.09% Ca adds in the alloy liquation; Treat after Ca melts fully alloy liquid to be poured in the fast cold mould of metal, and the cooling rate of alloy liquid is controlled at 10
2K/s～10
5K/s is cooled to room temperature and gets final product.
The rare earth lead base grid alloy that makes according to preparation technology of the present invention contains percentage by weight and is: 0.02～0.05% Ca, 1.0～1.2% Sn, 0.02～0.06% rare earth element, surplus is Pb.
The used rare earth element of the present invention is Ce or La.
Because the present invention does not add arsenic, cadmium etc. environment and forefront of the production workman is had the element of serious harm in plumbous calcium tin series alloy, thereby can reduce the pollution of lead alloy to greatest extent.By adding rare earth element, when improving chemical property, improve its mechanical property, thereby alleviate the weight of screen, improve the specific energy of lead-acid battery.
Four, embodiment
Embodiment 1: at first with percentage by weight be: 0.02% Y, and 1.2% Sn and 98.76% Pb are 650 ℃ of following meltings; Treat that then each element fusing back employing plunging with percentage by weight is: 0.02% Ca adds in the alloy liquation; After waiting Ca to melt fully at last alloy liquid is poured in the fast cold mould of metal, and the cooling rate of alloy liquid is controlled at 10
2K/s is cooled to room temperature and gets final product, and the rare earth lead base grid alloy that makes according to present embodiment preparation technology contains percentage by weight and is: 0.02% Ca, 1.2% Sn, 0.02% Y and 98.76% Pb.
Embodiment 2: at first with percentage by weight be: 0.06% Ce, and 0.4% Sn and 99.45% Pb are 400 ℃ of following meltings; Treat that then each element fusing back employing plunging with percentage by weight is: 0.09% Ca adds in the alloy liquation; After waiting Ca to melt fully at last alloy liquid is poured in the fast cold mould of metal, and the cooling rate of alloy liquid is controlled at 10
5K/s is cooled to room temperature and gets final product, and the rare earth lead base grid alloy that makes according to present embodiment preparation technology contains percentage by weight and is: 0.09% Ca, 0.4% Sn, 0.06% Ce and 99.45% Pb.
Embodiment 3: at first with percentage by weight be: 0.04% La, and 0.8% Sn and 99.11% Pb are 450 ℃ of following meltings; Treat that then each element fusing back employing plunging with percentage by weight is: 0.05% Ca adds in the alloy liquation; After waiting Ca to melt fully at last alloy liquid is poured in the fast cold mould of metal, and the cooling rate of alloy liquid is controlled at 10
3K/s is cooled to room temperature and gets final product, and the rare earth lead base grid alloy that makes according to present embodiment preparation technology contains percentage by weight and is: 0.05% Ca, 0.8% Sn, 0.04% La and 99.11% Pb.
Embodiment 4: at first with percentage by weight be: 0.06% Sm, 1.0% Sn and 98.89% Pb are 500 ℃ of following meltings; Treat that then each element fusing back employing plunging with percentage by weight is: 0.05% Ca adds in the alloy liquation; After waiting Ca to melt fully at last alloy liquid is poured in the fast cold mould of metal, and the cooling rate of alloy liquid is controlled at 10
4K/s is cooled to room temperature and gets final product, and the rare earth lead base grid alloy that makes according to present embodiment preparation technology contains percentage by weight and is: 0.05% Ca, 1.0% Sn, 0.06% Sm and 98.89% Pb.
Embodiment 5: at first with percentage by weight be: 0.06% Ce, 1.2% Sn and 98.65% Pb are 550 ℃ of following meltings; Treat that then each element fusing back employing plunging with percentage by weight is: 0.09% Ca adds in the alloy liquation; After waiting Ca to melt fully at last alloy liquid is poured in the fast cold mould of metal, and the cooling rate of alloy liquid is controlled at 10
2K/s is cooled to room temperature and gets final product, and the rare earth lead base grid alloy that makes according to present embodiment preparation technology contains percentage by weight and is: 0.09% Ca, 1.2% Sn, 0.06% Ce and 98.65% Pb.
Embodiment 6: at first with percentage by weight be: 0.02% La, 0.4% Sn and 99.56% Pb are 600 ℃ of following meltings; Treat that then each element fusing back employing plunging with percentage by weight is: 0.02% Ca adds in the alloy liquation; After waiting Ca to melt fully at last alloy liquid is poured in the fast cold mould of metal, and the cooling rate of alloy liquid is controlled at 10
5K/s is cooled to room temperature and gets final product, and the rare earth lead base grid alloy that makes according to present embodiment preparation technology contains percentage by weight and is: 0.02% Ca, 0.4% Sn, 0.02% La and 99.56% Pb.
Because the present invention has added intensity and decay resistance that rare earth has improved lead alloy significantly.Hot strength can reach 45Mpa, and excellent corrosion resisting performance is arranged in sulfuric acid.Along with the raising of content of rare earth, structure refinement, intensity and timeliness intensity are improved during casting, and decay resistance improves.Can satisfy the requirement of maintenance-free lead-acid battery to grid alloy.The rare earth grid alloy that adopts preparation technology of the present invention to make is safer, convenient and reliable, longer service life, can be used for the manufacturing of screen material of the maintenance free cell, particularly valve controlling type accumulator (VRLA) of environmental nonpollution type.
Claims (4)
1, a kind of preparation technology of rare earth lead base grid alloy is characterized in that:
1) with percentage by weight be: 0.02～0.06% rare earth element, 0.4～1.2% Sn and 98.65～99.56% Pb are 400～650 ℃ of following meltings;
2) treat that each element fusing back employing plunging with percentage by weight is: 0.02～0.09% Ca adds in the alloy liquation;
3) treat after Ca melts fully alloy liquid to be poured in the fast cold mould of metal, and the cooling rate of alloy liquid is controlled at 10
2K/s～10
5K/s is cooled to room temperature and gets final product.
2, the preparation technology of rare earth lead base grid alloy according to claim 1 is characterized in that: said rare earth element is Y, Ce, La, Sm.
3, a kind of rare earth lead base grid alloy is characterized in that: comprise that percentage by weight is 0.02～0.05% Ca, 1.0～1.2% Sn, 0.02～0.06% rare earth element, surplus is Pb.
4, rare earth lead base grid alloy according to claim 3, it is characterized in that: said rare earth element is Ce or La.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031080200A CN1262028C (en) | 2003-05-14 | 2003-05-14 | Rareearth lead based grid alloy and mfg. process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031080200A CN1262028C (en) | 2003-05-14 | 2003-05-14 | Rareearth lead based grid alloy and mfg. process thereof |
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| Publication Number | Publication Date |
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| CN1452260A CN1452260A (en) | 2003-10-29 |
| CN1262028C true CN1262028C (en) | 2006-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031080200A Expired - Fee Related CN1262028C (en) | 2003-05-14 | 2003-05-14 | Rareearth lead based grid alloy and mfg. process thereof |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100416898C (en) * | 2005-11-07 | 2008-09-03 | 西安交通大学 | Preparation proces for regenerating lead-rare earth low antimony slab lattice alloy |
| CN103762369B (en) * | 2014-01-10 | 2016-08-17 | 江苏海宝电池科技有限公司 | A kind of rare-earth lead alloy for lead-acid storage battery positive grid |
| CN104201393B (en) * | 2014-08-11 | 2016-08-24 | 安徽海容电源动力股份有限公司 | Valve-regulated power battery anode grid alloy |
| CN105177354B (en) * | 2015-08-17 | 2016-08-31 | 骆驼集团华中蓄电池有限公司 | A kind of maintenance-free lead accumulator positive grid alloy |
| CN105671362B (en) * | 2016-03-22 | 2017-11-17 | 安徽华铂再生资源科技有限公司 | The lanthanum foundry alloy anode plate grid and processing technology of lead-acid accumulator |
| CN107641733A (en) * | 2017-10-12 | 2018-01-30 | 河北工业大学 | A kind of PbCaSnAlCeAg grid alloys |
| PL3604576T3 (en) * | 2018-07-31 | 2021-06-28 | Hoppecke Batterien Gmbh & Co. Kg. | Lead alloy, electrode and accumulator |
| EP3604578A1 (en) * | 2018-07-31 | 2020-02-05 | HOPPECKE Batterien GmbH & Co. KG. | Lead alloy, electrode and accumulator |
| CN109879374A (en) * | 2019-02-24 | 2019-06-14 | 贵州省过程工业技术研究中心 | A kind for the treatment of of Organic Wastewater electrode material and application |
| CN110970624A (en) * | 2019-06-24 | 2020-04-07 | 天能电池(芜湖)有限公司 | High-temperature-resistant working condition long-service-life lead-acid battery grid alloy |
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