With the economic development of the country, all walks of life are developing rapidly, and the machinery industry is also growing steadily, especially the forklift industry. The demand for supporting oil cylinders for forklifts is also increasing gradually. In order to complete the production tasks on time and in...
The poor machinability is a common problem of Engine Castings in China, and it is also the biggest gap between domestic castings and foreign castings. Even though the chemical composition, matrix microstructure and hardness of domestic castings and imported KD castings are similar, the machinability of domestic castings is...
Leakage refers to the leakage phenomenon of the cylinder block (cylinder head) during the pressure test (water pressure / air pressure), which mostly occurs in the water jacket cavity or oil passage cavity of the cylinder block (or cylinder head). There are two main causes of leakage: inclusion and...
Modern engines have very strict requirements on cleanliness. For cylinder block (cylinder head) castings, only a few grams (g) of sand and foreign matters are allowed to remain in the water cavity, oil cavity, tappet chamber and other parts. Many enterprises have adopted secondary shot blasting, strong shot blasting,...
Usually in the inner surface or hot spot of the casting, such as the water jacket cavity of the cylinder head, or in the inlet and outlet passage, due to the effect of high temperature molten iron during pouring, the transformation expansion of the silicon sand in the sand...
Sand hole is also a common defect of cylinder block (cylinder head) casting, which is often found on the upper mold surface of the casting and exposed on the inner surface of cylinder barrel after machining. 1 reasons 1.1 the design of pouring system is unreasonable. 1.2 the serial...
Porosity is usually the most common defect in cylinder block castings, which often takes the first place in the scrap castings. How to prevent porosity is a permanent problem for foundry workers. The air holes in the cylinder block are mostly found on the outer surface corresponding to the...
With the rapid development of China’s automobile manufacturing industry, many high-end automobile brands have been launched almost at the same time with developed countries, and the corresponding automobile delivery machine manufacturing industry has also been developed rapidly, among which the level of engine casting has also been greatly improved....
The structure of cylinder block (cylinder head) casting is complex, and the wall thickness is quite different. The thick and large parts with raised circular arc surface are inconvenient to take measures such as riser feeding in the process of large-scale water production. When other processes are not handled...
Throughout the development trend of engine technology at home and abroad, we are pursuing to reduce the wall thickness of the casting, so as to reduce the weight of the casting and the whole machine, and to reduce the fuel consumption. At present, the weight of the cylinder head...