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....
In the design of casting sand mold, the structure for installing cold iron is designed according to the size and position of cold iron, and the later reprocessed casting sand mold is installed and fixed. As shown in Figure 1, the installation of cold iron on the base core...
The manufacturing process of the scheme is used for the manufacturing and processing of casting sand mold, and the coated sand core manufactured by laser selective sintering process is shown in Figure 1. Figure a shows the base core, which forms the top surface of the combustion chamber of...
1. Casting analysis and selection of sand casting process As shown in Figure 1, the cylinder head of passenger car 3-cylinder 4-Valve engine is shown. The sand casting material is alsi10mgcu, and the outline dimension of sand casting is 360mm × 180mm × 123mm, the blank weight of sand...
The major assemblies of auto parts, such as drive axle assembly, engine assembly and gearbox assembly, are inseparable from the production of castings, of which the castings on the engine account for about 75% of the total weight. The proportion of casting blank parts invested in automobile processing industry...
Gray cast iron cylinder head pig iron is added according to 5%, 10%, 15% and 20% of the total charge. The inspection results of the products produced by the two test schemes are shown in the table. The figure shows the graphite morphology with different pig iron addition. It...
Generally speaking, the hardness is positively correlated with the tensile strength and wear resistance of gray cast iron, while the hardness is negatively correlated with the cutting performance, that is, when the hardness of gray cast iron increases, the tensile strength increases and the wear resistance is high, but...
1.First process improvement and verification tracking (1) Change to bottom pouring system. The layout of the ingate of the casting should avoid the original thick position to reduce the risk of overheating at the ingate position. Change the original middle pouring system into the bottom pouring system, modify the...