Heat-resistant aluminum alloy die-casting demolding agent and preparation method and application method thereof

Abstract

The invention provides a heat-resistant aluminum alloy die-casting demolding agent and a preparation method and an application method thereof. The heat-resistant aluminum alloy die-casting demolding agent is prepared from the following components in parts by weight: 20-30 parts of oxidized polyethylene wax, 10-20 parts of organic modified silicone oil, 5-15 parts of an anionic surfactant, 1-5 parts of a nonionic surfactant, 10-20 parts of volcanic ash, 1-5 parts of black corundum, 1-5 parts of triethanolamine and 20-50 parts of water. The heat-resistant aluminum alloy die-casting demolding agent provided by the invention is good in heat resistance, excellent in lubricating and demolding property and good in stability, and still has a good demolding property after thermal treatment within 400 DEG C. A demolded casting is high in smoothness and has very good room temperature placing stability.

Description

technical field [0001] The invention belongs to the technical field of release agents, and relates to a release agent and a preparation method and a use method thereof, in particular to a heat-resistant aluminum alloy die-casting release agent and a preparation method and a use method thereof. Background technique [0002] Aluminum alloy die-casting is widely used in automobile, electronics, communication and other industries. Mold release agents are indispensable materials for the die casting process. At present, traditional aluminum alloy high-strength castings have been produced by gravity casting or low-pressure casting. The aluminum alloy engine brackets for automobiles manufactured by these traditional processes have quality problems of varying degrees such as cold shuts, dents, and cracks in appearance, while Fatal defects such as pores, shrinkage cavities, and pinholes often appear inside, which seriously affect the performance of the product. At the same time, due...

AI Technical Summary

Problems solved by technology

[0005] CN106311968A discloses an aluminum alloy template release agent and a preparation method thereof. The aluminum alloy template release agent of the invention is composed of the following raw materials in parts by weight: 10-20 parts of polyethylene wax, 1-5 parts of polyvinyl alcohol , 4-9 parts of silicone oil, 2-6 parts of borax, 19-27 parts of talc powder, 6-14 parts of sodium dodecylbenzenesulfonate, 0.2-1.3 parts of cetyltrimethylammonium chloride, compounded 5 to 10 parts of emulsifier, 0.05 to 0.2 parts of dichlorophen, 0.1 to 0.25 parts of oxypropylene oxide glyceryl ether, 0.2 to 1.4 parts of corrosion inhibitor, and 60 to 90 parts of water; With emulsifier, dichlorophen and corrosion inhibitor, the release agent is safer, cleaner and pollution-free. Compared with the traditional oil-based release agent, it has the advantages of good cooling effect, no accumulation, and good surface quality of castings. Compared with powder release agent, the application of this invention in aluminum alloy die casting has the advantage of low cost, but its high temperature resistance performance needs to be further improved

The release agent for metal die casting has good wetting performance and mold release performance, and has good cooling and heat insulation properties, but its high temperature resistance and stability need to be further improved

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