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Why should alloy cast steel rollers undergo spheroidization and annealing heat treatment?
时间：2023-06-14 11:48
来源： network
The spheroidizing and annealing heat treatment of alloy cast steel rollers is mainly aimed at improving the cutting performance of the rollers, improving cutting efficiency, and preparing the corresponding microstructure for subsequent quenching treatment. Spheroidizing annealing treatment causes the carbides in the structure to transform from flake to spherical, which means that spherical or granular carbides are uniformly distributed on the matrix of ferrite, forming a spherical pearlite structure. The spheroidization temperature selected in production is generally slightly higher than the critical point of Ac1. If the temperature is too low, the required spheroidization time is too long, while if the temperature is too high, it will lead to the appearance of granular pearlite with varying particle sizes.
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