PLASTIC MOLD STEEL PLATE AND PRODUCTION METHOD THEREFOR
The present invention discloses a plastic mold steel plate and a method for producing the same. The method includes: heating a billet, the temperature of a soaking section being 1210~1250°C; rolling into a steel plate, an initial rolling temperature being 1060~1140°C, and a final rolling temperature...
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Sprache: | eng ; fre ; ger |
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Zusammenfassung: | The present invention discloses a plastic mold steel plate and a method for producing the same. The method includes: heating a billet, the temperature of a soaking section being 1210~1250°C; rolling into a steel plate, an initial rolling temperature being 1060~1140°C, and a final rolling temperature being 980~1050°C; moving the steel plate to a cooling bed for air cooling to 200°C or lower; then normalizing, a normalizing temperature being Ac3 + 60°C to Ac3 + 90°C; after normalizing, moving the steel plate to the cooling bed for air cooling to Bf- 50°C to Bf-20°C; finally, cross-stacking the steel plate with a ferritic pearlitic steel plate with a temperature of 450~550°C; during the stacking period, self-tempering the steel plate until the temperature of the steel plate is reduced to Bf-50°C to Bf-20°C; and after that, unstacking and air cooling. |
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