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The implementation of grey iron casting industry can also be better accepted by the public. Contact with iron element industrial parts in different periods, such industrial design optimization methods are more delicate. Grey iron castings is a kind of very good industrial parts, the parts with its unique characteristics, play an important role in many fields, and the performance of the components is other equipment cannot be replaced. Even if the unit has many advantages, but there are also drawbacks is to let a person very headache problem, such as the stability of the parts is not very good, this is part of a defect, so to use this component engineering caused great hidden trouble.
Production process of grey cast iron using raw material. Gray iron is a kind of cast iron formed when the graphitization of the first and second stages can be fully carried out. Gray iron is used for low load and unimportant parts, such as cover, cover, handwheel, support, heavy hammer, etc. And some parts that bear moderate stress. As a professional ductile iron manufacturer, with advanced production equipment, a number of professional technical personnel, the production of ductile iron good quality. To gain considerable vibration energy, this energy can be compared with those of thermal energy, the resonance in the alternating stress and residual stress in the early phase of the overlay, driven artifacts to produce greater vibration and local yield.
To produce micro crystal internal dislocation and grain boundary sliding, causes the micro plastic deformation, part of a large displacement screw rolling on the impurities, another part of the assembled on the grain boundary, as well as part of the dislocation gain enough energy, you can through the grain boundary and into another grain, so from the overall look of artifacts are residual stress relaxation or homogenization, on macro performance for dimensional stability, stiffness, corrosion resistance, fatigue resistance, metal internal friction fell, the plasticity of improvement. Due to the large number of internal dislocation on the grain boundary and impurities, the stress inside each grain is completely inhomogeneous and the microstress is increased.
Therefore, the displacement is in a larger stress field, and the slip damping is increased, so it is very difficult for dislocation to slip again. Has good thermal conductivity, grey iron castings produced by internal combustion engine cylinder block, cylinder head, can rapidly around a lot of heat, good thermal conductivity is lower than at high temperature in the working of mechanical and electrical equipment is very important. It has good damping property, which can not only effectively absorb the energy of machine vibration, but also play the role of damping, which is also a very important performance of gray iron casting.
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Grey iron castings