Easy demolding treatment method for inner surface of casting mold

Abstract

The invention discloses an easy demolding treatment method for the inner surface of a casting mold, and belongs to the technical field of casting. A deformation demolding mechanism can be innovatively introduced, an inner edge mold is attached to the cavity wall in the casting mold before casting, then a demolding agent is injected through the deformation demolding mechanism. The demolding agent spreads in a gap between the casting mold and the inner edge mold, thus forming a complete film-like isolation layer. After a two-state composite board is shaped through a magnetic field, casting is started, the two-state composite board is controlled to contract inwards through the magnetic field again after gradual forming, a certain demolding gap is formed, demolding microspheres are released after extrusion. A mold cleaning agent is injected through the deformation demolding mechanism to be matched with the demolding microspheres, resonance is caused by impact of the demolding microspheres on the mold and a casting in the demolding gap, so that separation between the casting and the mold is accelerated, and meanwhile, the mold cleaning agent is promoted to effectively permeate into a blank area, and the demolding effect of the casting can be remarkably improved.

Description

technical field [0001] The invention relates to the technical field of casting, and more specifically relates to a method for easy-release treatment of the inner surface of a casting mold. Background technique [0002] Casting is a kind of metal thermal processing technology mastered by human beings earlier, with a history of about 6,000 years. China has entered the heyday of bronze castings between 1700 BC and 1000 BC, and the craftsmanship has reached a very high level. Casting is a method in which liquid metal is poured into a casting cavity adapted to the shape of the part, and after it is cooled and solidified, the part or blank is obtained. The material to be cast is mostly a metal that was originally solid but heated to a liquid state (for example: copper, iron, aluminum, tin, lead, etc.), and the material of the mold can be sand, metal or even ceramics. Depending on the requirements, the methods used will vary. [0003] Casting mold means that in order to obtain t...

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Problems solved by technology

[0004] However, in the actual operation process, it can be found that most of the release agents are sprayed. On the one hand, when targeting special casting molds, especially casting mold cavities with complex structures, there are often spraying dead angles, so that when demoulding The dead corner area of ​​the casting is prone to damage. On the other hand, although the separate release agent has a certain auxiliary release effect, it is inevitable that the release agent will fall off during the casting process, and only rely on the release agent during the release process. There is still a certain risk of damage to the casting due to the action of the agent

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