How to operate the heat treatment of ductile iron, and the specific operation details, we will give you a detailed introduction below.
In addition to malleable cast iron ductile iron annealing to decompose cementite into flocculent graphite, the heat treatment of cast iron aims at two aspects:
one is to change the matrix structure and improve the performance of cast iron, and the
other is to eliminate the stress of castings. It is worth noting that the heat treatment of the casting cannot change the original graphite shape and distribution of the casting, that is, the original graphite flake or spherical after heat treatment is still flake or spherical, and its size will not change, and the distribution status will not change.