Take the nm400 wear-resistant steel plate
as an example, the temperature change encountered in the manufacturing process will immediately affect all the characteristics of the wear-resistant steel plate. Therefore, it has always been scientific research on the actual effect of the isothermal process of the wear-resistant steel plate, and it was found that the continuous cooling change curve of the nm400 wear-resistant steel plate
, external economic institutions, phases and similar structures under different heating temperatures The phases have also changed accordingly.
The research method of isothermal process solution of nm400 wear-resistant steel plate
contains many excellent technologies. Then with the rise of the annealing process, the contrast of the metallographic structure in the nm400 wear-resistant steel plate gradually decreases, and the martensite rises, while the remaining martensite in it will be oblate and thin strips all over the gold. Phase structure dislocation and intragranular.
When the thermal insulation temperature is further increased, the processing time will immediately affect the metallographic structure crystal specification, the amount of metallographic structure and the relative density of the texture on the metallographic substrate of the nm400 wear-resistant steel plate
. With the increase of heat insulation time in the martensite zone, the molar fraction of residual martensite in the wear-resistant steel plate first expands and then decreases, and the carbon content of the residual martensite increases.
When the heating temperature is within the range, with the decrease of the heating temperature, the change of the metallographic structure is delayed, and the carbon content of martensite will be different. In the same tensile deformation link, the rate of increase of the martensite conversion rate is different, which promotes the deviation of the continuous cooling curve of the nm400 wear-resistant steel plate.
In addition, if the isothermal process time is the same, the higher the isothermal process temperature, the greater the carbon content in the residual martensite. The metallographic structure and martensite position in the wear-resistant steel plate
will change, and the corresponding characteristics will also change.