Engine cylinder body mold core machining technology
The invention discloses an engine cylinder body mold core machining technology. The engine cylinder body mold core machining technology comprises the steps that feeding operation is conducted, a moldcore blank is obtained through rough machining, and the mold core blank is further subjected to heat...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention discloses an engine cylinder body mold core machining technology. The engine cylinder body mold core machining technology comprises the steps that feeding operation is conducted, a moldcore blank is obtained through rough machining, and the mold core blank is further subjected to heat treatment and finish machining, so that a mold core is obtained. The process of heat treatment comprises the steps that the mold core blank is continuously heated to enable the temperature to range from 980 DEG C to 1030 DEG C, then the mold core blank is cooled to enable the temperature to range from 420 DEG C to 450 DEG C through oil cooling or gas cooling, then the air cooling is conducted, and the air-cooled mold core blank is tempered so that the hardness of the mold core blank can range from 45HRC to 48HRC. The process of finish machining comprises the steps that the mold core blank is polished and subjected to oxidization or nitridation treatment, so that an oxide film layer or a nitride film layer is formed |
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