The structure of cylinder block casting is complex, and there are many internal cavities. For this kind of structure casting, the traditional casting process needs to consider the following points: (1) The water cavity of the cylinder block is a relatively independent structure, and the sand core of the...
With the development of information technology, modern ships need to be equipped with a large number of information equipment and electronic equipment, increasing the demand for power, and need to be equipped with more power generating units to cope with the surge of power demand. As an important power...
With the increasingly fierce market competition, the quality requirements of engine products are higher and higher, especially the requirements of high quality and fast delivery. Traditional casting is difficult to meet the requirements of high quality and fast delivery in the face of cylinder block. The cylinder block casting...
In order to reduce the sand hole defects, we should start from the source of sand, inspection, removal and cavity protection, and mainly take the following preventive measures. (1) The sand core partition between camshaft cavity core and waist circle hole core is improved to eliminate the phenomenon of...
GEVO16 cylinder block is the key casting of HXN5 locomotive diesel engine on the main line, with the main dimension of 3987 mm × 1 458mm × The casting quality is about 7.5 T, the maximum wall thickness is about 200 mm, and the minimum wall thickness is only...
Analysis of casting structure and casting process The main body of the lower half casting of the rear cylinder is composed of a 30 mm thick exhaust volute, which is an irregular thin-walled shell with complex line shape. In the process of pouring, the molten steel flow distance is...
As the core part of diesel engine, the engine block carries all parts of the engine. Its working environment is bad. It bears not only oil pressure and water pressure, but also regular high frequency vibration and impact produced by other parts. Therefore, the quality of engine block blank...
Nodular cast iron intake cylinder is one of the important parts in the front end of heavy duty gas turbine unit. Its main function is to introduce air evenly into the compressor. It is a large pressure bearing component. The outer contour of the intake cylinder casting is bell...
30 casting samples of cylinder block were selected. The pouring information was counted, including the casting mass (unit: kg), pouring time (unit: s), average head (unit: mm), sprue area (unit: cm2), cross runner area (unit: cm2), runner area (unit: cm2), etc. Determine the type of gating system, calculate and...
The results show that the size of the cylinder block is qualified and there is no obvious defect on the surface. The wall thickness of the cylinder bore is uniform, and the wall thickness difference is less than 1.0 mm. The metallographic structure and mechanical properties of the important...