摘要
介绍了高Si-Mo球墨铸铁排气弯管的铸件结构以及生产设备,对砂芯生产效率低、尺寸不稳定、工艺出品率低、清理难度大等问题进行了详细分析,通过改进砂芯结构和浇注系统,解决了上述问题。生产结果显示:(1)人均每小时生产砂芯由23件提高到105件,生产效率提高了3.6倍,人工成本降低了78%;(2)更改后每型生产8件,工艺出品率由25.6%上升到50.9%,生产效率提高30%以上;(3)铸件冒口不再需要使用无齿锯去除,减少了金属材料的浪费;(4)由于取消了管壁处的内浇道,铸件的气密性得到了有效保障。
Casting configuration and productive equipments of high Si-Mo nodular iron pipe-bender were introduced,the problems with low productivity of sand cores,not stable dimensions,low process yield rate and high difficulty of cleaning were analyzed in detail;and by improving configuration of cores and gating system,above mentioned problems had been solved.The result of production showed:( 1) The average core number produced per person increased from 23 pcs to 105 pcs,the productivity of cores rose to higher than 30%.( 2) The casting number per mold after improvement was changed into 8 pcs,the process yield increased from 25.6% to 50.9%.( 3) Riser removing needs no more sawtooth-less saw that reduced metal material waste.( 4) Cancelling the ingate at pipe wall effectively ensured the air tightness of the casting.
出处
《现代铸铁》
CAS
2016年第2期29-31,共3页
Modern Cast Iron
关键词
球墨铸铁
排气弯管
砂芯
浇注系统
nodular iron
exhaust pipe-bender
sand core
gating system
