Combustion method for garage kit mold block of vacuum evanescent mold

A technology of vacuum lost foam and combustion method, which is applied to casting molding equipment, casting molds, cores, etc., can solve problems such as adverse effects of castings, and achieve the effects of eliminating carbon increase, reducing difficulty, and simplifying casting process parameter control.

Inactive Publication Date: 2017-12-15
HANDAN HUIQIAO COMPOSITE MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the invention is to avoid the negative influence of the gasification residue of the vacuum lost foam white mold module on the quality of the casting, and to improve the qualified rate of the casting

Method used

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  • Combustion method for garage kit mold block of vacuum evanescent mold
  • Combustion method for garage kit mold block of vacuum evanescent mold
  • Combustion method for garage kit mold block of vacuum evanescent mold

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Embodiment Construction

[0024] figure 1 It is a schematic diagram of the combustion process of the white mold module of the present invention. Before molding, the casting white mold module 13 is bonded to the outlet 16, painted with paint, and then the pouring system 12 is bonded. Place the modules after the box assembly in the sand box 11 to add sand and vibrate for molding. After the modeling is completed, cover it with plastic film. Vacuum the sandbox before pouring.

[0025] Incendiary gun 14 is inserted in the sealing block 15, ignites incendiary gun 14, and with incendiary gun 14 earlier outlet 16 is burnt, as attached figure 2 As shown, the outlet 16 is sealed with a sealing block 15, and the gap between the combustion gun 14 and the sealing block 15 is sealed with refractory cotton 21 simultaneously.

[0026] The above steps can also be changed to: first use the combustion gun 14 to burn the outlet 16 to prepare for the sealing of the sealing block 15 . Then combustion gun 14 is passed t...

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Abstract

The invention discloses a method for burning a white mold module before vacuum lost foam casting. After the modeling is completed, cover the plastic film, vacuumize, and gradually burn the white mold module with a burning gun from the outlet of the module. The burning gun is fed with combustible gas and oxygen. In addition to ensuring the complete combustion of the combustible gas, the combustion-supporting oxygen must have excess gas. The oxygen guarantees the combustion of the module, and the outlet remains sealed during the entire combustion process and the subsequent pouring process. The invention eliminates casting defects caused by the vaporization residue of the lost foam model, reduces the pouring temperature, improves the product qualification rate, and simplifies the process parameters of the vacuum lost foam casting.

Description

technical field [0001] The invention relates to the field of vacuum lost foam casting, in particular to a method for burning white mold modules before lost foam casting, and the method is suitable for casting various materials of vacuum lost foam. Background technique [0002] The vacuum lost foam casting method is the product of the combination of solid mold casting and V method casting. The process includes white mold (expandable polystyrene) model drying, hanging coating, drying, box assembly, and sand vibration molding in the sand box. , covering plastic film, vacuuming, pouring, cooling, turning over and other processes. During pouring, the high-temperature molten metal vaporizes the white mold model, and the vaporized gas passes through the coating and is sucked away by a vacuum pump. The molten metal fills the gasified cavity of the white mold and forms a casting after cooling. Vacuum lost foam casting can be used in the production of iron castings, carbon steel cast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/04
CPCB22C9/043
Inventor 邢振国齐自新常连波邢万里李立新
Owner HANDAN HUIQIAO COMPOSITE MATERIAL TECH CO LTD
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