The engine block for DF 4C diesel locomotives uses castwelding structure.
东风4C型机车柴油机机体采用铸焊结构。
2
Combining with development of high speed blower impeller with large titanium material castwelding structure, the manufacturing technical feature of the impeller is set forth.
结合大型钛材铸焊结构高速鼓风机叶轮的研制，阐述了其叶轮的制造工艺特点。
3
The existing bimetal composite processes mainly are of cast-in casting, cast cladding and welding.