45Mn2 is a medium carbon tempered steel, steel plate strength, wear resistance and hardenability are very high. In the oil critical quenching diameter of 10 ~ 25mm, in the water critical quenching diameter of 22 ~ 45. 45Mn2 after tempering has good comprehensive mechanical properties, machinability. At the same time in the heat treatment with overheating sensitivity and tempering brittleness. Pay attention to the water quenching easy to crack, sensitive to the white point, weldability and cold deformation plasticity is low and other shortcomings.
45Mn2 steel plate heat treatment:
First quenching heating temperature (℃): 840; coolant: oil
The second quenching heating temperature (℃): -
Tempering heating temperature (℃): 550; coolant: water, oil
45Mn2 is a kind of alloy structural steel, it is in the high-quality carbon structural steel on the basis of the appropriate addition of manganese elements and made of steel, belongs to the alloy structural steel in the medium-carbon tempered steel, with 45Mn2 is made of parts quenched and tempered at high temperature after tempering treatment, you can get with very good high strength and good toughness, that is, has a good overall mechanical properties, commonly used in the manufacture of bear larger Load bearing shafts, connecting rods, fasteners and so on.
