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Grid mould release agent

A release agent and grid technology, which is applied in coating, casting molding equipment, casting molds, etc., can solve the problems of unstable product quality, low production efficiency, poor molding of release agent, etc., and achieve smooth exhaust and prolong Long service life, easy demoulding effect

Active Publication Date: 2012-07-04
CHAOWEI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the release agent used in battery factories is generally made of cork powder, sodium silicate and water. This release agent is poorly formed and not durable, which easily leads to unstable product quality and low production efficiency.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: A grid release agent, the mass percentage of each component is as follows: water 95.0%, polytetrafluoroethylene: 0.3%, cork powder 4.0%, aluminum dihydrogen phosphate 0.2%, adhesive 0.15%, stable 0.35% agent, mixed and prepared according to the above ratio to form an emulsion, heated, stirred, and cooled to form a release agent. It has the advantages of easy spraying, good adhesion, high temperature resistance, small surface tension, high pressure resistance, and smooth exhaust. It is very suitable for The high-temperature gravity-cast lead-calcium alloy grid can effectively reduce the pores and cracks of the grid, and at the same time reduce the number of injection molds per unit time, improve production efficiency and improve product quality.

Embodiment 2

[0030] Embodiment 2: A grid release agent, the mass percentage of each component is as follows: water 97.0%, polytetrafluoroethylene: 0.1%, cork powder 2.4%, aluminum dihydrogen phosphate 0.18%, adhesive 0.12%, stable 0.2% agent, according to the above ratio, mixed and prepared into an emulsion, heated, stirred, and cooled to form a release agent, which has the advantages of easy spraying, good adhesion, high temperature resistance, small surface tension, high pressure resistance, and smooth exhaust, etc., very suitable for The high-temperature gravity-cast lead-calcium alloy grid can effectively reduce the pores and cracks of the grid, and at the same time reduce the number of injection molds per unit time, improve production efficiency and improve product quality.

Embodiment 3

[0031] Embodiment 3: A grid release agent, the mass percentage of each component is as follows: water 96.0%, polytetrafluoroethylene: 0.2%, cork powder 3.2%, aluminum dihydrogen phosphate 0.17%, adhesive 0.13%, stable 0.3% agent, according to the above ratio, mixed and prepared into an emulsion, heated, stirred, and cooled to form a release agent, which has the advantages of easy spraying, good adhesion, high temperature resistance, small surface tension, high pressure resistance, and smooth exhaust, and is very suitable for The high-temperature gravity-cast lead-calcium alloy grid can effectively reduce the pores and cracks of the grid, and at the same time reduce the number of injection molds per unit time, improve production efficiency and improve product quality.

[0032] The production process of the above-mentioned release agent: heat water to boiling, add bone glue and polyvinyl alcohol to melt completely, add aluminum dihydrogen phosphate and cork powder and boil for 10...

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Abstract

The invention discloses a grid mould release agent, which comprises the following components in percentage by mass: 95.0-97.0 percent of water, 0.1-0.3 percent of polytetrafluoroethylene, 2.0-4.0 percent of cork powder, 0.15-0.2 percent of aluminum dihydrogen phosphate, 0.12-0.15 percent of adhesive and 0.2-0.35 percent of stabilizer. The mould release agent provided by the invention has the advantages of easiness in spray coating, superior adhesion, high temperature resistance, small surface tension, high pressure resistance, smooth exhaust and the like, is extremely suitable for a lead calcium alloy grid cast through gravity at a high temperature; phenomena of blowhole, cracks and the like of the grid can be extremely effectively reduced; meanwhile, mould spray frequency in a unit time can be reduced; and the production efficiency and the product quality are improved.

Description

technical field [0001] The invention relates to a release agent, especially a release agent for battery grid casting. Background technique [0002] The grid is the main component of the lead-acid battery plate. There are two types of netting and casting. The role of the grid in the battery is mainly to support the active material, act as the carrier of the active material, conduct and collect current, and make the current evenly distributed in the active material. In terms of substances, in order to improve the utilization rate of active substances. Therefore, the quality of the grid directly affects the overall performance of the battery. Taking the cast battery grid as an example, its production process is as follows: alloy preparation → melting → grid mold preheating → spray molding → casting → shearing and leveling → inspection → age hardening. [0003] Because the grid is affected by the quality of the release agent during casting, the product often has defects such a...

Claims

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Application Information

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IPC IPC(8): B22C3/00B22D25/04
Inventor 张森赵文超余江杜恩生
Owner CHAOWEI POWER CO LTD
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