对现行铸件裂缝焊补方法的研究
Study on the Present Way of Mended Welding of Flaws in Castings
浏览(1871) 下载(1)
- DOI:
- 作者:
- 顾佩芝
Gu Peizi
- 作者单位:
- 上海交通大学
- 关键词:
- 铸钢;铸铁;零件;裂纹;焊接;维修;方法
- 摘要:
- 当前采用较多且比较统一的铸件焊补方法是在铸件表面裂缝两端钻出止裂孔,然后将裂缝边缘切成V型坡口。实践及理论分析表明,现行方法可能导致铸件出现裂缝延伸现象。文章将铸件可能出现的所有裂缝形式归结为三种简单模式,建议焊补前务必用探伤仪器判别裂缝模式。对于归属第Ⅰ种模式的裂缝,应增钻两个保险孔,然后再钻止裂孔,即可避免出现裂缝延伸现象;对第Ⅱ、Ⅲ种模式的裂缝仍可按现行方法焊补。
At present,holes are drilled a popular memded welding way is as following: Two holes called anti-cracking welding. Practice at both ends of flaw, then the brims of the flaw are cut into V type slope before and theoretical analysis show that this way cause the flaw extended. This article classifies all- haws in castings into three simple types and proposes that the flaw type must be distinguished by using detector before mended welding. For the first type of flaw, other two holes called ensuring holes should be drilled before the two anti-cracking holes are drilled to avoid the flaw extending after mended welding. For the second and third types, the popular way can still be used.1991,6(6): 25-28 收稿日期：1991-3-5参考文献：
1 金光熹.压缩机制造工艺.北京:机械工业出版社，1986.
2 船舶钳工工艺编呀组船舶轴系及螺旋桨的制造与安装北京:人民交通出版社，1981.
3 POДИN ЛP.金属切削刀具.北京:机械工业出版社，1985
4 黄炎.工程弹性力学.北京:清华大学出版社，1982
5 张如一实验应力分析.北京:机械工业出版社，1984