Lost foam casting method

A lost foam casting and lost foam technology, applied in casting molding equipment, molds, mold components, etc., can solve the problems of environmental pollution, increase production costs, etc., and achieve the goal of improving quality, saving energy, and improving environmental protection. Effect

Pending Publication Date: 2022-02-01
云南领峰机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Lost foam casting has been accepted and recognized by the foundry industry due to a series of advantages such as high dimensional accuracy of castings, good surface finish, wide range of process adaptation, simple operation, and can greatly improve the labor intensity and environment of foundry workers. Film, white film is polystyrene foam plastic, the waste gas containing benzene organic matter generated after the white film is burned is discharged into

Method used

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  • Lost foam casting method

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Example Embodiment

[0026] Example 1

[0027] See figure 1 The present invention provides a technical solution: a method of disappearing a mold casting, a drawing of disappearing molding, mold making, sand shape, vibration, sealing vacuum processing, mold elimination, mold casting, exhaust gas purification treatment, and casting The specific steps of processing and sand recovery, disappearing mold casting are:

[0028] (1) The disappear mold includes a sandbox and a mold case, and the part is drawn after the order, and then according to the part pattern manually, the coating is stirred by the coating, and the grinding is applied to the white film model. On the surface, according to the shape of the casting, the mold is made of a foam and silica sol, the molding case includes a plurality of cavities, and the mold is placed in the drying chamber for drying, and the temperature is controlled below 60 degrees and the venting is performed. The mold is placed into the sandbox, styled with resin sand;

[00...

Example Embodiment

[0043] Example 2

[0044] See figure 1 The present invention provides a technical solution: a method of disappearing a mold casting, a drawing of disappearing molding, mold making, sand shape, vibration, sealing vacuum processing, mold elimination, mold casting, exhaust gas purification treatment, and casting The specific steps of processing and sand recovery, disappearing mold casting are:

[0045] (1) The disappear mold includes a sandbox and a mold case, and the part is drawn after the order, and then according to the part pattern manually, the coating is stirred by the coating, and the grinding is applied to the white film model. On the surface, according to the shape of the casting, the mold is made of a foam and silica sol, the molding case includes a plurality of cavities, and the mold is placed in the drying chamber for drying, and the temperature is controlled below 60 degrees and the venting is performed. The mold is placed into the sandbox, styled with resin sand;

[00...

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PUM

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Abstract

The invention discloses a lost foam casting method in the technical field of lost foam casting. The method comprises the following steps: lost foam drawing, mold manufacturing, molding sand molding, jolt ramming, sealing and vacuumizing treatment, formwork elimination, casting mold pouring, waste gas purification treatment, casting post-treatment and molding sand recovery. After a formwork is manufactured, the formwork in a sand mold is heated, the heating lasts for a period of time, the formwork is heated and converted from solid into liquid, formwork liquefying is realized, and the liquefied formwork is discharged from the sand mold, so that the replacement of the formwork is effectively realized, a workpiece cavity is conveniently and quickly formed, and a casting workpiece is conveniently formed by subsequently pouring liquid metal. The heating temperature of the sand mold is increased for a period of time, so that residual liquid formwork raw materials are converted into gas, clean and rapid removal of the formwork materials is achieved, the casting quality of castings can be guaranteed, waste gas can be collected, the mold sand can be recycled and reused, the production cost is reduced, energy consumption is reduced, and the environment friendliness is high.

Description

technical field [0001] The invention relates to the technical field of lost foam casting, in particular to a lost foam casting method. Background technique [0002] Lost Foam Casting is a technology for precise molding of liquid metal with almost no margin, and is considered as "new casting technology in the 21st century" and "green engineering in casting". Lost foam casting has been accepted and recognized by the foundry industry due to a series of advantages such as high dimensional accuracy of castings, good surface finish, wide range of process adaptation, simple operation, and can greatly improve the labor intensity and environment of foundry workers. Film, white film is polystyrene foam plastic, the waste gas containing benzene organic matter generated after the white film is burned is discharged into the atmosphere by the vacuum pump, causing pollution to the surrounding environment. Although there are new casting methods on the market, they are disappearing. In the ...

Claims

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Application Information

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IPC IPC(8): B22C9/02B22C5/16B22C5/08
CPCB22C9/043B22C5/16B22C5/08
Inventor 宁楚亮宁佐明李双江
Owner 云南领峰机械制造有限公司
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