Rut340 Materials Is 6l Cylinder Head

In recent years, the vermicular iron for its excellent performance gradually applied to the engine block and cylinder head castings, the engine in order to adapt to constantly improve the reliability requirements. Domestic research vermicular iron remains in a number of simple parts production. Yuchai has taken the lead in the industry had RuT340 material 6L heavy machinery in the cylinder head on the research applications.Through the course of more than two years a lot of research on the vermicular controlling and the casting processes.Vermicular controlling mainly obtained through the orthogonal experiment, "Re-Mg-Si-Fe alloy add Re-Si alloy, w(s)≤0.025%, the iron temperature of 1480℃" for the right combination of process parameters vermicularity; the development of high carbon and low sulfur technology to enhance the productivity of vermicular iron; through the nodular handling ladle and stirring significantly reduced the part nodular conditions; through the incubation at changing ladle significantly reduced the burning loss and chilling of test wedge; and demonstrate the compacted graphite Iron with aspect ratio range (10,50), does not mean that casting has been gray, and should be based on the mechanical properties as determined.Casting processes. Through a large number of technology tests, created and improved side riser technology, complemented by mould and core exhaust opening to ensure that the rejection rate of 7.85 percent is well below the gray iron castings of similar material reject rate.This article through the reliability test verified materials RuT340 completely adapt the 6L cylinder head to the requirements of high reliability.