Shrinkage cavity in sand casting is a common casting defect, which is basically a volume loss defect. According to the causes, it can be divided into the following types: hot joint shrinkage, riser neck shrinkage, ingate shrinkage, axis dispersion shrinkage and concave corner shrinkage. Hot shrinkage cavity in sand...
It can be seen from the chemical composition analysis, microstructure metallography and SEM observation results of the part alloy that the overall chemical composition of the part basically meets the standard requirements, and the microstructure of the core of the test bar basically meets the design requirements. There are...
Through comprehensive analysis of the test results, it can be seen that: (1) The slight difference of graphite morphology in some places will not seriously affect the performance of cylinder liner. In essence, the casting black spot defect is the uneven section structure of the cylinder liner. The coarse...
The structure of horizontal centrifuge is simple, and abnormal vibration of centrifuge spindle occurs from time to time. The abnormal vibration (channeling and shaking) of the centrifuge spindle produces disordered power in different directions to the small particles in the solidification process of molten iron, affects the tissue uniformity...
During the cooling and solidification process of cylinder liner, the cooling water from the outer wall metal mold and impacting on the metal mold have a great impact on its solidification process. The difference of local cooling intensity will affect the solidification characteristics of various parts of cylinder liner,...
Inoculant is added during the post-treatment of molten iron furnace, and the melting point of inoculant is generally 1300 ~ 1400 ℃. When the temperature of molten iron is low, the inoculant cannot melt and diffuse well in the molten iron, and the local inoculant concentration is too high,...
See Table 1 for the chemical composition of metal mold centrifugal casting vanadium titanium alloy gray cast iron cylinder liner. Through the physical and chemical analysis of the black spot defect part of the cylinder liner, it is found that the graphite in this part is mainly coarse type...
The cast iron cylinder liner of diesel engine is generally produced by metal mold centrifugal casting. In production, it is found that the brightness of individual cylinder liners is uneven in processing; These parts with uneven brightness are randomly distributed on the inner and outer wall surfaces of the...
The structure of the flywheel housing is relatively complex and belongs to a typical thin-walled shell structure. Due to the need to install a variable displacement pump on the flywheel housing, one side of the flywheel housing is suspended outside, which has a great impact on the structural stiffness...
The flywheel housing is an extremely important power output component in the vehicle power system, and it is also a vital component to bear the load. On the small road sweeper, the flywheel housing is installed between the Ningmou frame and the engine, which directly bears the overturning torque...