Lead-acid storage battery gravity casting grid mold

Abstract

The invention relates to a lead-acid storage battery gravity casting grid mold. Due to the fact that the temperature of the gravity casting plate grid mold is not uniform, the fluidity of lead liquidin the mold can be reduced, the casting performance can only be improved through adopting a method for increasing the temperature in the production process, or in order to solve the problem of grid casting, the design weight of a grid is generally increased, so that the burning loss in the production process is increased, the alloy performance is reduced, the energy is wasted, and the lead dust pollution is caused. The invention relates to the lead-acid storage battery gravity casting grid mold, wherein one end of a guide column is fixed at the top of a fixed mold, the fixed mold and a movablemold are connected as a matching whole through the guide column and a through hole in a matched mode, and the fixed mold are attached with the movable mold, so that a lower mold cavity and a upper mold cavity form a plate grid mold cavity; the upper ends of the fixed mold and the movable mold are provided with gates, and the gates communicate with the plate grid mold cavity; and superconducting pipe holes are formed in the lower ends of the fixed mold and the movable mold, and superconducting materials are filled in the superconducting pipe holes. The lead-acid storage battery gravity castinggrid mold has the advantages that the temperature in the casting process can be kept uniform, rapid forming is realized, and the cooling time can be greatly shortened.

Description

technical field [0001] The invention relates to a gravity casting grid mold for a lead-acid battery, in particular to a grid mold for a lead-acid battery with uniform casting temperature and rapid temperature transfer, and belongs to the technical field of lead-acid battery production and processing. Background technique [0002] The lead-acid battery grid is the supporting framework of the active material of the lead-acid battery. Most of the existing technologies use gravity casting, and the temperature of the casting lead liquid is mostly 500-560°C, while the melting point of lead is 327°C. [0003] Due to the uneven temperature of the grid mold for gravity casting, the temperature in the middle area is generally higher than the temperature on both sides and the lower part by about 30-50 °C, resulting in poor flow performance of the lead liquid in the mold, resulting in difficulty in grid casting and alloy segregation The phenomenon is serious, the production process can ...

AI Technical Summary

Problems solved by technology

[0005] It has been verified by experiments that conventional grid molds are made of cast iron or alloy materials, with poor thermal conductivity, and the difference in temperature range is about 50°C. The temperature characteristics of conventional cast plates require the temperature of lead pot: 500-520°C, lead spoon Temperature: 520-540°C, Mold temperature: 170-190°C, as we all know, the higher the mold temperature, the coarser the casting grains, and the alloy is not corrosion-resistant

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