Calcium-aluminum-lead alloy for battery plate and preparation method thereof

A battery electrode, lead alloy technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as reducing smelting costs, and achieve the effects of long storage time, less oxidation, and improved stability

Active Publication Date: 2015-12-30
长兴华源冶金材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And the cost of smelt

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0043] Under the protection of a continuous argon atmosphere, take 2.2kg of pure aluminum ingot, heat it up to 900°C in an induction furnace to melt it, and then add 6.8kg of pure calcium block to it while stirring, and control the temperature of mixed smelting at 930°C. After it is completely melted, continue to stir and add 1.0kg of lead block. The temperature of the mixed smelting is controlled at 950°C, and it is stirred for 8 minutes until the alloy is completely melted. Then, it is cast into an intermediate alloy through a casting device, cooled naturally in the air and made into a finished intermediate alloy. , put into storage after detection and weighing. Its composition and content are: Ca: 68wt%, Al: 22wt%, Pb10wt%.

example 2

[0045] Under the protection of a continuous argon atmosphere, take 2.5kg of pure aluminum ingot, heat it up to 900°C in an induction furnace to melt it, and then add 7.0kg of pure calcium block to it while stirring, and control the temperature of mixed smelting at 950°C. After it is completely melted, continue to stir and add 0.5kg of lead block. The temperature of the mixed smelting is controlled at 980°C, and stirred for 10 minutes until the alloy is completely melted. Then, it is cast into an intermediate alloy through a casting device, cooled naturally in the air and made into a finished intermediate alloy. , put into storage after detection and weighing. Its composition and content are: Ca: 70wt%, Al: 25wt%, Pb: 5wt%.

example 3

[0047] Under the protection of a continuous argon atmosphere, take 1.0kg of pure aluminum ingot, heat it up to 900°C in an induction furnace to melt it, and then add 8.2kg of pure calcium block to it while stirring, and control the temperature of mixed smelting at 980°C. After it is completely melted, continue to stir and add 0.8kg of lead weight. The temperature of mixing and smelting is controlled at 1000°C. Stir for 8 minutes until the alloy is completely melted. At this time, carry out reverse stirring for 3 minutes. Then it is cast into master alloy by casting device, cooled naturally in the air and made into finished master alloy, which is checked and weighed before storage. Its composition and content are: Ca: 82wt%, Al: 13wt%, Pb: 5wt%.

[0048] Although the three embodiments all use argon as the shielding gas, it is due to the high cost performance of argon. In the case of higher requirements for product accuracy, other inert gases can be selected. In order to coopera...

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Abstract

The invention provides a novel calcium-aluminum-lead intermediate alloy used for preparing a battery plate and having the advantages of short production process, a high calcium utilization rate and stable chemical composition to substitute a calcium-aluminum alloy in the prior art so as to overcome disadvantages in the prior art. The battery plate prepared from the calcium-aluminum-lead intermediate alloy has the advantages of high cleanliness, good electrical performance, long service life, high strength, more stable performance and greatly reduced smelting cost. The calcium-aluminum-lead alloy, as the intermediate alloy for preparation of the battery plate, is synthesized from, by mass, 60 to 85% of calcium, 10 to 35% of aluminum and 3 to 12% of lead. According to the invention, in the procedure of preparation of a lead-calcium alloy in eventual preparation of the plate electrode, the calcium-aluminum-lead intermediate alloy is added in one step, secondary supplementation of the calcium-aluminum-lead intermediate alloy is not needed, calcium and aluminum are fully dissolved and uniformly distributed, so the comprehensive performance of the battery plate is improved as much as possible.

Description

technical field [0001] The invention relates to an intermediate metal for making battery pole plates, in particular to a calcium-aluminum-lead alloy for battery pole plates and a preparation method thereof. Background technique [0002] The battery plate is an important part of the battery, and its comprehensive performance has a great impact on the battery. At present, most of the production and preparation of domestic battery plates use lead-calcium multi-element alloys, and the composition of lead-calcium alloys is similar, and the preparation process and formula are only slightly different. However, the early method of configuring lead-calcium alloys when adding calcium and aluminum was to add calcium and aluminum separately for smelting. In recent years, calcium-aluminum alloys have been used as master alloys due to process improvements and production requirements, but calcium-aluminum master alloys There are many disadvantages in preparation, storage, transportation, ...

Claims

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Application Information

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IPC IPC(8): C22C24/00C22C1/02H01M4/46H01M4/56
CPCY02E60/10
Inventor 凌春源
Owner 长兴华源冶金材料有限公司
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