An introduction was given to the configuration characteristics,technical requirements of 3CR model cylinder head and its casting method design details including method parameters determination,gating system and venting system design,core making and cores assembling scheme and molding process,etc.Cupola + induction furnace duplex melting process was used,pouring temperature was controlled in the range of 1 350～1 390 ℃,pouring time in the range of 10～16 s.The reason causing blowhole and core breaking which were often occurring with 3CR cylinder head was analyzed and prevention measures were proposed.As the result,the overall rejection rate of the casting has been controlled at about 10％.%介绍了3CR灰铸铁缸盖的结构特点、技术要求,以及铸造工艺设计详细情况,包括铸造工艺参数的确定、浇注及排气系统的设计、制芯和组芯方案、造型工艺等.采用冲天炉和感应电炉双联熔炼铁液,浇注温度控制在1 350～1 390℃,浇注时间10～16s.分析了3CR缸盖常见的气孔和碎芯缺陷产生的原因,并提出了防止措施,使其综合废品率控制在10％左右.
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