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Low-stibium multicomponent lead alloy and production technology and applications thereof

A production process and lead alloy technology, applied in the chemical industry, can solve the problems of difficult dispersion of alloy elements, low antimony content, insufficient strength, etc., and achieve the effect of making up for the lack of mechanical strength, improving corrosion resistance, and improving casting performance

Inactive Publication Date: 2010-08-04
双登天鹏冶金江苏有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the price of metal antimony as an alloy component is high, and the addition of high content of antimony to the lead alloy makes the production cost of the alloy higher, and high content of antimony (above 3%) can cause the battery to continuously lose water and increase the maintenance cost of the battery
However, if the antimony content is low (below 2%), the mechanical properties of the alloy will decrease significantly, and the strength will not be enough. At the same time, the alloying elements will not be easy to disperse evenly.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Weigh 55.61kg of antimony ingot with a purity of 99.9%; 0.51kg of 99% cobalt powder; 0.51kg of 99.9% aluminum powder; 0.51kg of 99.9% selenium block; 51g of 99.9% arsenic; 51g of 99% % ytterbium; 4992kg, 99.99% lead ingots.

[0021] Put the lead ingot and antimony ingot into the well-type electric furnace, raise the temperature, and the lead ingot starts to melt at about 330°C, and the antimony ingot gradually dissolves into the lead melt. At this time, continue to heat up while stirring. When the temperature of the melt rises to 400°C, use a lead pump to pump the mixed melt into an alloy kettle (high carbon steel is the main material, with two stirrers), turn on the stirrer, and adjust the speed. To 1000 rpm, add the weighed cobalt powder, aluminum powder, selenium block, arsenic and ytterbium. After all the added metals are melted, maintain a stirring speed of 1000 rpm and continue stirring for 30 minutes to form an alloy.

[0022] The molten alloy is put into the i...

Embodiment 2

[0024] Weigh 56.81kg of antimony ingot with a purity of 99.9%; 1.02kg of 99% cobalt powder; 0.51kg of 99.9% aluminum powder; 0.51kg of 99.9% selenium block; 102g of 99.9% arsenic; % ytterbium; 4991kg, 99.99% lead ingots.

[0025] Add the lead and antimony ingots into the well-type electric furnace and heat up. The lead ingot starts to melt at about 330°C, and the antimony ingot gradually dissolves into the lead melt. At this time, continue to heat up while stirring. When the temperature of the melt rises to 480°C, pump the mixed melt into the alloy kettle with a lead pump, turn on the stirrer, adjust the speed to 1200 rpm, and add the weighed cobalt powder and aluminum alloy. powder, selenium lumps, arsenic, ytterbium. After all the added metals are melted, maintain a stirring speed of 1500 rpm and continue stirring for 35 minutes to form an alloy.

[0026] The molten alloy is put into the ingot casting machine from the lead opening of the alloy kettle, cooled, and the allo...

Embodiment 3

[0028] Weigh 55.61kg, 99.9% purity antimony ingot; 0.88kg, 99% cobalt powder; 0.60kg, 99.9% aluminum powder; 60g, 99.9% arsenic block; 55g, 99% ytterbium, 4992kg, 99.99% lead ingots,

[0029] Add the lead and antimony ingots into the well-type electric furnace and heat up. The lead ingot starts to melt at about 330°C, and the antimony ingot gradually dissolves into the lead melt. At this time, continue to heat up while stirring. When the temperature of the melt rises to 580°C, pump the mixed melt into the alloy kettle with a lead pump, turn on the stirrer, adjust the speed to 1500 rpm, and add the weighed cobalt powder and aluminum alloy. powder, arsenic lumps, ytterbium. After all the added metals are melted, the stirring speed is maintained at 1500 rpm, and the stirring is continued for 85 minutes to form an alloy.

[0030] The molten alloy is put into the ingot casting machine from the lead opening of the alloy kettle, cooled, and the alloy lead ingot is produced.

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Abstract

The invention discloses a low-stibium multicomponent lead alloy and a production technology and applications thereof. The low-stibium multicomponent lead alloy contains 1.1-1.8% of stibium, 0.0009-0.004% of arsenic, 0.0009-0.005% of ytterbium and the balance lead. The alloy also contains at least one of cobalt, aluminum and selenium, and the weight percentages of cobalt, aluminum and selenium are separately 0.009-0.03%, 0.009-0.1% and 0.009-0.05%. The production technology of the alloy comprises the following steps: firstly placing electrolytic lead and antimony ingot in a pit-type resistance furnace to melt at 400-800 DEG C, secondly pumping liquid lead-antimony alloy with a lead pump to an alloy kettle, stirring and cooling while adding other alloys. The prepared low-stibium multicomponent lead alloy of the invention is used in the grid and bus of the lead-acid accumulator and is characterized by easy casting process, high strength and high corrosion resistance; and the prepared accumulator has less water loss and longer service life in use.

Description

Technical field: [0001] The invention belongs to the field of chemical industry and relates to a low-antimony multi-element lead alloy and its production process and application. Background technique: [0002] According to incomplete statistics, the proportion of lead-acid batteries in my country's gross national product is about 0.22%, and it is indispensable in transportation, energy and electricity, communications, post and telecommunications, military and other industries. With the rapid development of the information industry and the automobile industry, its role will become more and more important. [0003] In addition to the shell (tank), cover, separator and electrolyte, the main part of the lead-acid battery is lead or lead oxides and sulfides. The following table gives a list of typical lead-acid battery parts and components. From the table, we can see the approximate proportion of various parts: lead and lead alloys account for as much as 60-70% of the battery. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C11/08C22C1/02
Inventor 王青陈小山陈怀平徐进
Owner 双登天鹏冶金江苏有限公司
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