Vanish mould for casting polystyrene foam

A technology of polystyrene foam and polystyrene foam, which is applied in the field of polystyrene foam casting lost foam, can solve the problems of inconvenient production, handling and operation, time-consuming and labor-intensive, etc., and achieve easy portability, transportation and operation, The effect of big economy and promotion value

Inactive Publication Date: 2006-11-15
李金良
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, metal casting mostly uses wooden molds for foundry. During the foundry operation, mold making, foundry, demoulding and box closing are generally required. This process is not only cumbersome and complicated, but also labor-intensive and time-consuming. , the casting quality is not well guaranteed. Although there are some paraffin casting and other processes that make sanding easier, most of them are not easy to manufacture, transport and operate because of the heavy weight and low strength of the wax mold. no good solution

Method used

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  • Vanish mould for casting polystyrene foam

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Embodiment Construction

[0009] The working principle of the mold is: the mold body (4) is buried in the casting box (1) and compacted, the upper plane of the sprue mold (3) is flush with the upper surface of the molding sand in the casting box, and the molten The molten iron is aligned with the gate mold (3) and can be cast directly; at this time, the gate mold (3) and the mold body (4) melt rapidly and become gas volatilization, and the molten iron flows into the mold body (4) in the molding sand in sequence. In the space, after the molten iron is filled, it can be formed into a casting body.

[0010] In the figure, the molding sand (2) in the casting box (1) is the same as the conventional molding sand without any change, and the grain size of the molding sand (2) is determined according to the requirements of precision casting sand, and the finer grain size is required for high precision.

[0011] In the figure, the sprue mold (3) is in the shape of a funnel with a large top and a small bottom, an...

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Abstract

A consumable casting mould is composed of main body and sprue gate and is made up of styrene foam by negative-pressure suction moulding. Said styrene foam has low residual dreg ratio (one 3000th) and low fusion temp (less than 250 deg.C).

Description

Technical field [0001] The invention relates to a mold for metal casting, in particular to a lost foam for polystyrene foam casting. Background technique [0002] At present, metal casting mostly uses wooden molds for foundry. During the foundry operation, mold making, foundry, demoulding and box closing are generally required. This process is not only cumbersome and complicated, but also labor-intensive and time-consuming. , the casting quality is not well guaranteed. Although there are some paraffin casting and other processes that make sanding easier, most of them are not easy to manufacture, transport and operate because of the heavy weight and low strength of the wax mold. There is no good solution. Contents of the invention [0003] In order to overcome the shortcomings of the current metal casting, the present invention provides a polystyrene foam casting lost foam, using the mold operation, the process is simple, convenient, high quality and low price, saving labo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C7/02
Inventor 李金良
Owner 李金良
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