The Purpose of Annealing for NM500 Steel Wear-resistant Plate

For NM500 steel wear-resistant plate, heat treatment includes annealing and normalizing. Such heat treatment can be used to reduce hardness, refine grain size, eliminate residual stress, increase toughness, restore plasticity or reduce segregation. Temperature, cooling rate and other details in annealing and normalizing processes are determined by the treatment objectives of NM500 steel wear-resistant plate.

Annealing is to heat the NM500 steel wear-resistant plate to a certain temperature and keep it warm for a certain time, and then slow down.

The goal of annealing is to reduce hardness, increase plasticity and improve processing function. Eliminate the internal stress in the NM500 steel wear-resistant plate, refine the grain size, average structure, and plan for future heat treatment.

According to the different treatment objectives of NM500 steel wear-resistant plate, the common annealing methods can be divided into complete annealing, isothermal annealing, spheroidizing annealing and stress relief annealing.