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Evaporative pattern casting process for fuel oil engine cylinder cover

A technology of lost foam casting and engine block, which is used in manufacturing tools, casting molding equipment, casting molds, etc., can solve the problems of large consumption of raw materials, high labor intensity, and many casting processes, and achieve high utilization rate of raw materials, reduce The effect of labor intensity and production cost reduction

Inactive Publication Date: 2015-04-29
QINGDAO HEDELONG MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The casting level of the cylinder head and cylinder block of the engine is one of the important symbols to measure the level of a country's manufacturing industry. The current lost foam casting process of the cylinder block and cylinder head of the fuel engine has the disadvantages of high labor intensity and large consumption of raw materials.
Not only are there many casting processes, which affect the production capacity, but also the weight of the castings is heavy and the scrap rate is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0019] The lost foam casting process of the fuel engine cylinder head of the present embodiment includes the following steps:

[0020] (1) Divide the diesel engine, gasoline engine cylinder block or cylinder head to be cast into several splicing blocks or pieces, and manufacture the same mold cavity as the splicing blocks or pieces;

[0021] (2) Pre-expand the mixed raw materials of expandable polystyrene and polymethyl methacrylate by 45 times in a sealed container to obtain molding beads containing residual pentane, and place the molding beads in an airtight container Store and dry for 9 hours before use;

[0022] (3) inject the above-mentioned molding beads into the aforementioned mold cavity under 7 atmospheres;

[0023] (4) After the above injection work is completed, heat the mold together with the molding beads in the mold cavity to 140°C, so that the molding beads in the mold cavity will further expand and squeeze each other under the action of residual pentane Press...

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PUM

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Abstract

The invention discloses an evaporative pattern casting process for a fuel oil engine cylinder cover. The evaporative pattern casting process comprises the following steps: a mould is manufactured by dividing a real object into multiple mould slices; an evaporative pattern casting raw material is injected into the mould to obtain an evaporative pattern casting slice similar to the real object; the mould slice is dipped with an evaporative pattern casting coating, then placed in a casting sand box, vibrated and poured so as to fuse the evaporative pattern casting slice into carbonic oxide and carbon dioxide both which are discharged to obtain a real object mould; the process can be used for overcoming the problem that an existing diesel engine and gasoline engine cylinder cover molding sand casting process is great in labor intensity, large in raw material consumption, heavy in casting weight, serious in environmental pollution, weak in redundancy degree and large in mechanical processing, and thus the evaporative pattern casting process is environmentally-friendly, the raw material is saved, the labor intensity is reduced and the performance is improved.

Description

[0001] technical field [0002] The invention belongs to the technical field of casting, and in particular relates to a lost foam casting process of a fuel engine cylinder block and cylinder cover. [0003] Background technique [0004] The casting level of the cylinder head and cylinder block of the engine is one of the important symbols to measure the level of a country's manufacturing industry. The current lost foam casting process of the cylinder block and cylinder head of the fuel engine has the disadvantages of high labor intensity and large consumption of raw materials. Not only are there more casting processes, which affects production capacity, but also the weight of castings is heavy and the scrap rate is high. [0005] Contents of the invention [0006] In order to overcome the above-mentioned technical problems existing in the prior art field, the object of the present invention is to provide a lost foam casting process for fuel engine cylinder block and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/04B22C9/22
CPCB22C9/04B22C9/22
Inventor 常云青
Owner QINGDAO HEDELONG MACHINERY
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