Pre-coated sand shell mold coating-filling casting process burr-free technology

A technology of casting technology and coated sand, which is applied in the technical field of coated sand casting process without dart edge, can solve the problems of low yield, low added value, poor finish, etc., achieve high yield, improve surface High-quality, high-value-added effects

Inactive Publication Date: 2017-10-13
杨光
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the existing film-coated sand shell mold casting process includes stacked mold and shell mold. When pouring molten steel, it needs to be pressed with a pressure plate. There will be a circle of burrs on the surface, which needs to be polished after casting, which affects the size and the surface smoothness is poor
The existing film-coated sand shell mold casting process has poor finish, low yield and low added value

Method used

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  • Pre-coated sand shell mold coating-filling casting process burr-free technology
  • Pre-coated sand shell mold coating-filling casting process burr-free technology
  • Pre-coated sand shell mold coating-filling casting process burr-free technology

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] A dart-free edge-free technology for pouring casting process of film-coated sand shell type, characterized in that it comprises the following steps:

[0020] Such as figure 1 , pour the prepared paint into the Y-shaped sprue cup 11 of the model 1, fill the Y-shaped sprue cup 11, and the paint flows into the mold cavity 13 through the Y-shaped sprue cup 11 and the runner 12;

[0021] After 20 seconds, as in figure 2 , turning the model 1 by 180 degrees, so that the paint is coated on the inner wall of the mold cavity 13, and the excess paint flows out from the drain hole 1302 and the Y-shaped sprue cup 11 at the upper end of the triangular cavity 1301 to obtain a smooth casting shell;

[0022] Put the model 1 upright for drying or air-drying treatment, pour 1600°C molten steel along the Y-shaped sprue cup 11, fill the Y-shaped sprue cup 11, and the molten stee...

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Abstract

The invention discloses a dart edge-free technique for pouring and casting a film-coated sand shell mold, which comprises the following steps: filling a Y-shaped sprue cup (11) with paint, and passing the paint through the Y-shaped sprue cup (11) and the runner ( 12) Flow into the mold cavity (13), reverse the mold cavity (13) by 180°, and the paint flows out from the triangular cavity (1301) and drain hole (1302) of the sprue cup (11); drying, pouring 1600 ° molten steel is filled with Y-shaped sprue cup (11) and runner (12) and flows into the mold cavity (13) for forming; after that, the model (casting) is polished and shaped. The coated sand shell mold casting process improves the surface quality of castings, which can be higher than the surface smoothness of water glass precision casting, reduces the grinding process, and can obtain coated sand shell mold castings with good smoothness, high yield and high added value.

Description

technical field [0001] The invention relates to a casting process, in particular to a dart-free edge casting process for a coated sand shell mold. Background technique [0002] At present, the existing film-coated sand shell mold casting process includes stacked mold and shell mold. When pouring molten steel, it needs to be pressed with a pressure plate. There will be a circle of burrs on the surface, which needs to be polished after casting, which affects the size and the surface smoothness is poor. The existing film-coated sand shell mold casting process has poor smoothness, low yield and low added value. Contents of the invention [0003] The object of the present invention is to solve the above problems, overcome the deficiencies of the prior art, and provide a dart-free edge-free casting process with a film-coated sand shell mold with good finish, high yield and high added value. [0004] To achieve the above object, the present invention adopts the following techni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/02
CPCB22C9/02
Inventor 杨光
Owner 杨光
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