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球铁内燃机机身缩松缺陷的工艺改进
Technological Improvement on Shrinkage Defects of Ductile Iron Internal Combustion Engine Body
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- DOI:
- 作者:
- 张聚涛 1 ,张 涛 2 ,赵悦光 2 ,宫显辉 2 ,颉向旭 2 ,景高楼 2
ZHANG Jutao 1 , ZHANG Tao 2 , ZHAO Yueguang 2 , GONG Xianhui 2 , XIE Xiangxu 2 , JING Gaolou 2
- 作者单位:
- 1. 中核第四研究设计工程有限公司,河北 石家庄 052260;2. 陕西柴油机重工有限公司,陕西 兴平 713105
1. The Fourth Research and Design Engineering Corporation of CNNC, Shijiazhuang 052260, China; 2. Shaanxi Diesel Engine Heavy Industry Co., Ltd., Xingping 713105, China
- 关键词:
- 机身;缩松;冒口;温度
crankcase; shrinkage; risers; temperature
- 摘要:
- 重 点 讨 论 了 球 墨 铸 铁 机 身 在 铸造 过 程 中 冒 口 根 部 的 缩 松 缺 陷 。 通过降低铸件浇注温度上限,即由1 360~1 380 ℃ 变为 1 360~1 370 ℃ 范围内, 同时将冒口颈尺寸为 φ60 mm 的 φ120 mm 保温冒口更改为冒口颈尺寸为30 mm×60mm×25 mm 的 φ150 mm 木质冒口以解决铸件冒口根部缩松缺陷。 生产结果显示缩松问题得到彻底解决,为解决其他机身缩松缺陷提供了参考依据。In this paper, the problem of shrinkage of riser root in ductile iron body during casting was discussed. By lowering the upper limit of casting temperature from 1 360~1 380 ℃ to 1 360~1 370 ℃, and changing the φ120 mm insulation riser with the riser neck size of φ60 mm to the φ150 mm wooden riser with the riser neck size of 30 mm×60 mm×25 mm to solve the shrinkage defects at the riser root of the casting. According to the production results, the shrinkage problem has been completely solved, which provides a reference for solving other defects of the fuselage shrinkage.