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Gating system for cylinder cover of single-cylinder air cooled engine

An air-cooled engine and engine cylinder head technology, applied in casting molding equipment, casting molds, cores, etc., can solve the problems of difficult cylinder head core feeding, shrinkage, shrinkage, and porosity, and reduce consumption and shrinkage. The effect of reducing porosity and improving yield

Inactive Publication Date: 2014-08-13
ANHUI HIGH TECH POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The structure is complex, and the thinnest internal wall thickness is 2.5mm. The traditional metal casting process adopts the bottom casting system (such as figure 2 shown), including sprue cup 1, sprue 2, runner 3, ingate 4 and top riser 5, one end of the ingate communicates with the bottom of the cavity, and the other end of the ingate passes through the The sprue is connected to the bottom of the sprue, and the top of the sprue is connected to the sprue cup. Due to the complex structure and thin wall thickness of the cylinder head, it is difficult to complete the center of the cylinder head and the tail away from the sprue by using the traditional casting process. Feeding, easy to form shrinkage cavity and shrinkage defects in these places

Method used

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  • Gating system for cylinder cover of single-cylinder air cooled engine
  • Gating system for cylinder cover of single-cylinder air cooled engine
  • Gating system for cylinder cover of single-cylinder air cooled engine

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Embodiment

[0017] Embodiment: the gating system of the single-cylinder air-cooled engine cylinder head of this embodiment, such as figure 1 , 3 As shown, the top of the pouring mold of the engine cylinder head 7 is provided with a hidden riser 5 communicating with the cavity. 4. The sprue 3, the sprue 2 and the sprue cup 1 are sequentially arranged on the sprue; the alumina ceramic tube 6 connected to the mold cavity and the external atmosphere is provided on the top of the other end of the mold away from the sprue. Atmospheric energy enters the mold cavity through the alumina ceramic tube, which can realize smooth filling and effective feeding of castings. Figure 3-5 As shown, the cavity of the sprue 2 shrinks gradually from top to bottom. In the specific structural setting, the upper and lower end faces of the sprue are as follows Figure 4 , 5 As shown, that is, the cross-sectional length of the sprue remains unchanged, and the cross-sectional width decreases gradually.

[0018]...

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Abstract

The invention discloses a gating system for a cylinder cover of a single-cylinder air cooled engine. A blind riser communicated with a mold cavity is formed in the top of a gating mold of the cylinder cover of the engine, by adopting a top pouring slot-type gating system, a slot gate communicated with the mold cavity is arranged at the top of one end of the mold, a cross gate, a sprue and a pouring cup which are communicated are sequentially arranged on the slot gate; and an alumina ceramic tube which is communicated with the mold cavity and external atmosphere is arranged at the top of the other end, far away from the slot gate, of the mold. The gating system facilitates the removal of defects in the prior art, and the quality and finished percentage of castings can be improved.

Description

Technical field: [0001] The invention relates to a pouring system for a cylinder head of a single-cylinder air-cooled engine. Background technique: [0002] The cylinder head is a key part of the engine, and its performance has an important impact on the overall performance of the engine. The requirements of high strength, high reliability, thin wall, and functional compounding have made the casting of cylinder heads more difficult. To meet the requirements of high strength and high reliability, a large amount of alloying elements need to be added, which will lead to poor fluidity of the aluminum liquid and a large tendency of casting shrinkage; meeting the requirements of thin wall and functional compounding will inevitably make the structure of the casting more complicated, and the local heat scattered There are many knots and the difference in wall thickness is greater, which makes it difficult to feed the casting. Optimizing the casting forming process can improve the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/08
Inventor 苏勇万彬吴海平金梅章高伟王爱珍李金磊姚明春
Owner ANHUI HIGH TECH POWER TECH
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