Lost foam casting technology is widely used in the foundry industry because of its advantages of small investment, low energy consumption, good working environment, high production efficiency and less pollution emission, especially in the production of large quantities, high precision and complex structure castings. However, the lost foam casting...
With the continuous development of mechanization and integrated construction in China, the scale of construction machinery industry has been expanded year by year. The excavator is the largest and most important plate, especially the demand growth of small and medium excavator products is more obvious, and the competition is...
The typical specification characteristics of section steel universal edging roll and special-shaped steel s-roll products are that the roll neck at the operation end is slender. Because of the roll body processing pass, the semi steel material is generally selected. Affected by the semi steel material, the solidification and...
Internal combustion engine occupies a very important social position in power machinery. The internal combustion engine has high thermal efficiency, high power and zero line coordination, so the mechanical kinetic energy must have good application characteristics and advantages. It can be widely used in mechanical devices. As an important...
In order to have an effective understanding of vermicular graphite cast iron technology, we must have a comprehensive understanding of its graphite growth state and production mechanism. The graphite in vermicular graphite cast iron is called vermicular graphite cast iron because its production state is vermicular. During the growth...
Diesel engine is widely used, working environment is poor, working time is long. Because the cylinder head of diesel engine bears the effect of high pressure and high temperature gas for a long time, it is required that the cylinder head can not be deformed and cracked. At the...
Although the metallurgical quality of molten iron is affected by many factors, foundry workers have found the quantitative index of metallurgical quality, namely undercooling. Undercooling degree is an important quantitative index to judge the metallurgical quality of molten iron, which directly reflects the metallurgical quality of molten iron. It...
1. Set ice pack and extend setting time appropriately Through X-ray examination and local dissection, it is found that the internal structure of the casting block hole is relatively compact, and the original structure design does not have defects such as porosity and cold shut, which means that the...
After adjusting the production conditions to the appropriate level, the batch trial production was carried out, and it was found that the rejection rate of components exceeded 60%. According to the statistical analysis, there is a certain distribution law of the defect parts (1) The inner surface of the...
1. Component classification block The structure of the valve plate of the automobile gearbox is complex and has a large tightening force. The overall structure is shown in the figure. When designing the dynamic model, the component parting blocks are divided according to the functional structure of each part....