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
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[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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