Inoculant is a substance that can promote graphitization,
reduce the tendency of white mouth,
improve the morphology and distribution of graphite,
increase the number of eutectic groups,
and refine the matrix structure.
Let's take a look at the consequences of excess inoculant addition.
1. Excessive inoculation, excessive silicon content,
silicon brittleness will occur if the silicon content exceeds a certain value,
and the final silicon content will lead to
the thickening of A-type graphite;
it is also easy to produce shrinkage porosity and shrinkage,
and the amount of F in the matrix increases; less pearlite,
ferrite The more body, the lower the strength.
1. Excessive inoculation, but the final silicon content
does not exceed the standard,
it is easy to produce shrinkage cavities and shrinkage,
the organization is refined, and the strength is improved.
2. Excessive inoculation will lead to the reduction of
graphite precipitation at the end of the solidification process,
the reduction of the expansion of cast iron,
and the increase of eutectic groups,
which will cause poor feeding,
and the liquid shrinkage will increase,
resulting in shrinkage porosity.
4. Excessive inoculation of ductile iron will increase
the number of eutectic clusters and increase the tendency to loosen
Follow me, the youngest girl in the factory, see you next time, bye~
reduce the tendency of white mouth,
improve the morphology and distribution of graphite,
increase the number of eutectic groups,
and refine the matrix structure.
Let's take a look at the consequences of excess inoculant addition.
1. Excessive inoculation, excessive silicon content,
silicon brittleness will occur if the silicon content exceeds a certain value,
and the final silicon content will lead to
the thickening of A-type graphite;
it is also easy to produce shrinkage porosity and shrinkage,
and the amount of F in the matrix increases; less pearlite,
ferrite The more body, the lower the strength.
1. Excessive inoculation, but the final silicon content
does not exceed the standard,
it is easy to produce shrinkage cavities and shrinkage,
the organization is refined, and the strength is improved.
2. Excessive inoculation will lead to the reduction of
graphite precipitation at the end of the solidification process,
the reduction of the expansion of cast iron,
and the increase of eutectic groups,
which will cause poor feeding,
and the liquid shrinkage will increase,
resulting in shrinkage porosity.
4. Excessive inoculation of ductile iron will increase
the number of eutectic clusters and increase the tendency to loosen
Follow me, the youngest girl in the factory, see you next time, bye~
