P355QL2 homogenizing annealing also called diffusion annealing.
Applied to steel and nonferrous alloy (such as tin bronze, silicon bronze, copper, magnesium, etc.) of the ingot casting or casting an annealing method. Heat will P355QL2 ingot casting or casting to the solidus temperature of the alloy under a high temperature, heat preservation for a long time, and then slowly cooled down.
Homogenizing annealing is to make P355QL2 elements in the solid state diffusion occur, to reduce the chemical inhomogeneity (segregation), is mainly to reduce the chemical composition of grain scale inhomogeneity (coring or dendritic segregation). Homogenization annealing temperature is so high, so is to speed up P355QL2 alloy elements in diffusion, as far as possible, shorten the time of heat preservation.
P355QL2 homogenizing annealing temperature is far higher than the Ac3, typically 1050 ~ 1200 ℃. Nonferrous alloy ingot homogenizing annealing temperature generally is "0.95 x the solidus temperature (K)", homogenizing annealing for the heating temperature is high, the heat preservation time is long, so the thermal energy consumption.
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