摘要
大型筒体铸件采用ZL101A铝合金材料铸造,筒体总长1 410mm,直径为615mm,质量为223kg,铸件表面不能有夹渣、针孔、缩孔、缩松等缺陷,并且需要承受FS6气密性检验。该筒体铸件结构复杂,尺寸大,壁厚不均,铸造热节偏多,容易产生铸造缺陷。通过对大型铝合金筒体铸件的分析,总结出一套有效地提高大型铝合金承压铸件检漏合格率的有效方法。
Large cylinder with 1 410mm in length and 615 in diameter and 223kg in weight was produced with ZL101Aaluminum alloy,which required high technical condition and casting quality.It is not allowed for slag inclusion,porosity,shrinkage hole,shrinkage on the surface of casting,and it is subjected to FS6in the air seal test and 1.22MPa pressure in the water seal test.Cylindrical structure is complicated with big size,uneven wall thickness,so there exists many hot spots,leading to easily generate the casting defects.Through the development of large aluminum alloy cylindrical castings,a set of effective methods to improve the qualified rate of leakage detection of large aluminum alloy casting bearing pressure were presented.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2014年第6期653-655,共3页
Special Casting & Nonferrous Alloys
关键词
大型铝合金铸件
筒体
针孔
渗漏
铸造缺陷
Large Aluminum Alloy Castings
Cylinder
Pinhole
Leakage
Casting Defects
