Continuous casting and continuous punching technology for grid

A grid and process technology, which is applied in the field of grid continuous casting and punching technology, can solve the problems of grids not resistant to penetration corrosion, short cycle life, etc., and achieve improved internal metal structure, extended cycle life, and dense crystallization structure Effect

Pending Publication Date: 2021-09-07
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

[0004] Aiming at the deficiencies of the prior art, the present invention provides a grid continuous casting and punching process, which has the advantages of making the structure of the thin plate more compact and high in mechanical strength, so the produced grid is resistant to penetration corrosion and has the advantages of prolonged cycle life. Solve the problem that the existing grid is not resistant to penetration corrosion and the cycle life is short

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: This embodiment provides a grid continuous casting and punching process, which is characterized in that the process includes the following steps:

[0027] 1) According to the ingredients of the grid, the ingredients of the grid include the following raw materials in parts by weight: 12 parts of tin, 3 parts of aluminum, 8 parts of calcium, 6 parts of antimony, 88 parts of lead, tin, aluminum, calcium , antimony and lead, respectively preheated at 200°C for 1h;

[0028] 2) Use a crucible resistance furnace to heat up and melt the preheated lead. When the temperature reaches 400°C, add tin into the solution and stir thoroughly for 2 minutes. Then, when the temperature reaches 700°C, add tin to the solution. Add antimony and aluminum and stir thoroughly for 4 minutes. Finally, when the temperature reaches 1100°C, add calcium into the solution and stir thoroughly for 2 minutes to obtain alloy liquid. During the melting process, argon gas is used for gas protec...

Embodiment 2

[0035] Embodiment 2: This embodiment provides a grid continuous casting and punching process, which is characterized in that the process includes the following steps:

[0036] 1) According to the ingredients of the grid, the ingredients of the grid include the following raw materials in parts by weight: 10 parts of tin, 5 parts of aluminum, 7 parts of calcium, 8 parts of antimony, 80 parts of lead, tin, aluminum, calcium , antimony and lead, respectively preheated at 200°C for 0.5h;

[0037] 2) Use a crucible resistance furnace to heat up and melt the preheated lead. When the temperature reaches 400°C, add tin into the solution and stir thoroughly for 1 minute. Then, when the temperature reaches 700°C, add tin to the solution in turn Add antimony and aluminum and stir thoroughly for 3 minutes. Finally, when the temperature reaches 1100°C, add calcium into the solution and stir thoroughly for 1 minute to obtain alloy liquid. During the melting process, argon gas is used for gas...

Embodiment 3

[0044] Embodiment 3: This embodiment provides a grid continuous casting and punching process, which is characterized in that the process includes the following steps:

[0045] 1) According to the ingredients of the grid, the ingredients of the grid include the following raw materials in parts by weight: 16 parts of tin, 2 parts of aluminum, 10 parts of calcium, 2 parts of antimony, 93 parts of lead, tin, aluminum, calcium , antimony and lead, respectively preheated at 200°C for 1.5h;

[0046] 2) Use a crucible resistance furnace to heat up and melt the preheated lead. When the temperature reaches 400°C, add tin into the solution and stir thoroughly for 2.5 minutes. Then, when the temperature reaches 700°C, add tin to the solution. Add antimony and aluminum in turn, and stir thoroughly for 4.5 minutes. Finally, when the temperature reaches 1100°C, add calcium into the solution and stir thoroughly for 3 minutes to obtain alloy liquid. During the melting process, argon gas is use...

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PUM

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Abstract

The invention relates to the technical field of storage battery grid manufacturing, and discloses a continuous casting and continuous punching technology for a grid. The continuous casting and continuous punching technology for the grid is characterized by comprising the following steps: conducting proportioning according to the components of the grid, and separately preheating tin, aluminum, calcium, antimony and lead at 200 DEG C for 0.5-1.5 hours; and heating and melting the preheated lead by using a crucible resistance furnace. By adding the alloy elements of antimony, calcium and the like and adopting a cast rolling technology, compared with a grid formed by direct casting, the continuous casting and continuous punching technology for the grid has the advantages that a casting blank is firstly cast, then the casting blank is calendered to form a thin plate, then the grid is finally formed through technologies of punching and the like, rolling passes are correspondingly increased after a rough rolling process is added, a reasonable rolling process where the thick blank is subjected to multi-pass rolling is formed, the thickness ratio of a raw material to a finished product is increased, and the total compression ratio in the rolling process is increased, so that improvement of the internal metal structure of the finished product, grain refinement and the compactness of the crystal structure are facilitated, thus the mechanical performance of the product is improved, the penetration corrosion resistance of the grid is improved, and the cycle life is prolonged.

Description

technical field [0001] The invention relates to the technical field of battery grid manufacturing, in particular to a grid continuous casting and punching process. Background technique [0002] The grid is the main component of the lead-acid battery. It is the current collector skeleton of the electrode, which plays the role of conducting, collecting and making the current evenly distributed. At the same time, it supports the active material and is the carrier of the active material. The positive electrode active material PbO2 in the lead-acid battery has poor conductivity and high resistivity, while the resistivity of the alloy grid is low, and the conductivity is more than 10,000 times that of PbO2. However, the resistivity of PbSO4 in the negative electrode is greater, so coating the active material on the grid can greatly reduce the internal resistance of the battery. The existing grid is not resistant to penetration corrosion and has a short cycle life, so a grid conti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/26B21B45/08B21D1/02B21D22/02B22D11/00B22D11/116B22D11/117C22C1/02C22C1/06C22C11/06
CPCB21B1/26B21D1/02B21B45/08B21D22/02B22D11/001B22D11/116B22D11/117C22C11/06C22C1/06C22C1/02
Inventor 王超王佳
Owner 山东久力新能源集团有限公司
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