发热冒口套在排气弯管铸件上的应用

Application of Exothermic Riser Sleeve to Exhaust Bending Pipe

介绍了排气弯管的铸件结构,为解决原工艺铸件出品率低的问题,利用铸造模拟软件对原铸造工艺进行了分析,决定通过使用发热套减小冒口尺寸,增加每型铸件总数,并确定了冒口数量、各个冒口的尺寸以及发热冒口套的尺寸。按照新制订工艺试验浇注铸件,生产结果显示:发热冒口最后凝固,铸件关键部位无缩孔、缩松缺陷,而且工艺出品率也由43%提高到69.8%,在熔炼铁液量不变的情况下,有效地提高了铸件产量。

The casting configuration of the exhaust bending pipe was introduced. In order to solve the low process yield problem of the original casting method,the casting simulating software was used to analyze the original casting method. Then it was decided,by using the exothermic sleeves,to reduce riser dimensions,increase the casting number per mould,determine the number of risers,dimensions of every riser and the dimensions of the exothermic sleeves. Some castings were cast on trial according to the new casting method,the production results showed：the exothermic riser solidified lastly,no shrinkage cavity or porosity existing in the key locations of the castings,furthermore the process yield also increased form 43% to 69.8%,and under the condition of the iron melting quantity being unchanged,the castings output was effectively increased.