The cooling channel and inlet/outlet of the cylinder head are of special-shaped curved structure, with large wall thickness variation and numerous corners and distortion areas. The air passage is not connected with the upper and lower water channels, and the thinnest part is 3 mm. The relationship between the...
According to the structure and working conditions of the cylinder head of the combat vehicle diesel engine, taking into account the production efficiency and yield of the sand casting, the anti-gravity sand casting process is selected to ensure the internal quality and mechanical properties of the cylinder head casting....
At present, the commonly used aluminum alloy cylinder head materials at home and abroad are mainly Al-Si series alloys. The common material choices are ZL101A (A356, G-AlSi7Mg), ZL104 (AC4B), ZL106 (328.0 US), ZL107, and A-S5U3 (France) alloys. In addition, ZL111 (A354) alloy is used as one of the engine...
With the rapid development of the global automotive industry, lightweight and low fuel consumption have become the main goals of domestic automobiles. Compared with cast iron, aluminum engines have many advantages and have been widely recognized in the automotive industry market. In the field of high-end weapons and equipment,...
Due to the complex structure of diesel engine cylinder head, high requirements for surface accuracy and casting quality, the traditional manual production method is applied, and the sand core deformation is large due to the influence of mold accuracy, core box locking degree, sand scraping surface height, sand core...
1. Design of cold core box of diesel engine cylinder head All the molds of the cold core box of the diesel engine cylinder head are designed in 3D, programmed by computer, and processed by the machining center network. The working surface, parting surface and the matching surface of...
As the diesel engine represented by compact and efficient has gradually become the mainstream of modern ship power selection, it requires that the wall thickness of diesel engine castings become thinner and thinner, more and more spatial curved curve structures, more and more complex shapes, and higher requirements for...
The diesel engine structure for combat vehicles is V-shaped and symmetrical, and the left and right cylinder head castings are completely symmetrical. The traditional left/right cylinder head casting blanks and molds are independently designed, with long cycle and high cost. In order to facilitate the development, processing and installation...
The rapid prototyping manufacturing of mold and the pouring production of sand castings will be carried out according to the early design scheme. The design scheme is verified and compared through actual production to determine the optimal design scheme. Analyze and solve the problems in the process of rapid...
According to the process scheme optimized by previous simulation, the manufacturing process of sand casting scheme is used for sand mold manufacturing and processing, and core assembly pouring is carried out to obtain the sand casting of engine cylinder head. The cleaned sand casting is shown in Figure 1....