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A kind of lead calcium tin aluminum alloy and its production method and application

A production method, calcium-aluminum alloy technology, applied in the direction of electrode carrier/current collector, electrical components, battery electrodes, etc., can solve the problems of limiting the service life of batteries, increasing production costs, environmental pollution by lead smoke and lead vapor, and reducing Lead slag, reduce energy consumption, reduce the effect of lead smoke pollution

Active Publication Date: 2018-02-09
山东久力新能源集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional preparation method of lead-calcium-tin-aluminum alloy for grid is to prepare the calcium master alloy into lead-calcium-tin-aluminum alloy with the composition required by the process. When casting the grid, the alloy with the required composition is melted again for production. Exposure to high temperature in the air for a long time will cause some calcium oxidation loss. Sometimes it is necessary to add a certain amount of calcium master alloy to supplement the calcium composition, which will increase the production cost.
And adopt the measure of adding calcium master alloy, can cause the composition of lead-calcium alloy to be inhomogeneous, the internal crystalline structure of the plate grid of sequential production is inconsistent and make battery lose efficacy because of the local corrosion of plate grid when using, seriously limit the service life of battery, at the same time Produce a large amount of lead smoke and lead vapor to pollute the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1 A lead-calcium-tin-aluminum alloy and its production method

[0029] Lead-calcium-tin-aluminum alloys are composed of raw materials with the following mass fractions:

[0030] Lead 97.71%;

[0031] Calcium-aluminum alloy Ca-Al 0.09%, of which, the content of calcium is 75% of that of calcium-aluminum alloy, and the content of aluminum is 25% of that of calcium-aluminum alloy;

[0032] Lead-tin alloy Pb-Sn 1.7%, wherein, the content of lead is 30% of the lead-tin alloy, and the content of tin is 70% of the lead-tin alloy;

[0033] Aluminum foil 0.5%.

[0034] The production method of above-mentioned lead calcium tin aluminum alloy is as follows:

[0035] (1) Raise the temperature of lead, which accounts for 70% of the total amount of lead-calcium-tin-aluminum alloy, to 580°C;

[0036] (2) Add block or granular calcium-aluminum alloy wrapped in aluminum foil, stir quickly, add the remaining lead while stirring, and stir for 10 minutes in total;

[0037] (3)...

Embodiment 2

[0039] Example 2 A lead-calcium-tin-aluminum alloy and its production method

[0040] Lead-calcium-tin-aluminum alloys are composed of raw materials with the following mass fractions:

[0041] Lead 96.7%;

[0042] Calcium-aluminum alloy Ca-Al 1.0%, wherein, the content of calcium is 75% of that of calcium-aluminum alloy, and the content of aluminum is 25% of that of calcium-aluminum alloy;

[0043] Lead-tin alloy Pb-Sn 1.8%, wherein, the content of lead is 30% of the lead-tin alloy, and the content of tin is 70% of the lead-tin alloy;

[0044] Aluminum foil 0.5%.

[0045] The production method of above-mentioned lead calcium tin aluminum alloy is as follows:

[0046] (1) Raise the temperature of lead, which accounts for 70% of the total amount of lead-calcium-tin-aluminum alloy, to 600°C;

[0047] (2) Add block or granular calcium-aluminum alloy wrapped in aluminum foil, stir quickly, add the remaining lead while stirring, and stir for 9 minutes in total;

[0048] (3) Whe...

Embodiment 3

[0050] Embodiment 3 The casting process of lead-calcium-tin-aluminum alloy of the present invention, concrete steps are as follows:

[0051] (1) Transport the lead-calcium-tin-aluminum alloy liquid from the melting pot to the heat preservation pot;

[0052] (2) Pump the alloy liquid in the heat preservation pot through the heat preservation pipe to the lead liquid buffer hopper connected to the lead pouring port;

[0053] (3) Control the pumping amount of the alloy liquid and continuously cast the lead belt.

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Abstract

The invention relates to a lead calcium tin aluminum alloy and a production method and application thereof, in particular to an alloy for a continuous-cast lead plate strip for an accumulator pull net plate grid, and belongs to the technical field of production of alloys. The lead calcium tin aluminum alloy comprises the following raw materials in percentage by mass: 96.96-98.13% of lead, 0.07-0.14% of calcium aluminum alloy Ca-Al, 1.3-1.9% of lead tin alloy Pb-Sn, and 0.5-1% of aluminum foils. Alloys with different components can be prepared according to the production process demands, so that the product pass percent is 100%; the utilization rates of calcium and tin both can be improved above 94%; the consumption of secondary heating melting energy is reduced; the lead slag generated by oxidation is reduced; and the lead smoke pollution in the alloy preparation and insulation process is reduced.

Description

technical field [0001] The invention relates to a lead-calcium-tin-aluminum alloy and its production method and application, in particular to an alloy used for continuous casting lead strips for battery expanded grids, and belongs to the technical field of alloy production. Background technique [0002] The traditional preparation method of lead-calcium-tin-aluminum alloy for grid is to prepare the calcium master alloy into lead-calcium-tin-aluminum alloy with the composition required by the process. When casting the grid, the alloy with the required composition is melted again for production. Exposure to high temperature in the air for a long time will cause some calcium to be oxidized and lost. Sometimes it is necessary to add a certain amount of calcium master alloy to supplement the calcium component, which will increase the production cost. And adopt the measure of adding calcium master alloy, can cause the composition of lead-calcium alloy to be inhomogeneous, the inte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C11/06H01M4/68
CPCC22C1/03C22C11/06H01M4/685Y02E60/10
Inventor 刘明伟韦学忠时培春韦学平王嘉泉王世玉王佳
Owner 山东久力新能源集团有限公司