Production method of non-oriented electrical steel 50W800 by traditional hot continuous rolling process
A technology of oriented electrical steel and production method, which is applied in the field of full-process cold-rolled non-oriented electrical steel 50W800, which can solve the problems of difficult rolling and processing, rusting of silicon steel sheets, easy oxidation of silicon, etc., and achieves good welding performance and easy control , the effect of controllable plate shape
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Embodiment 1
[0050] A production method for producing non-oriented electrical steel 50W800 by a traditional hot continuous rolling process:
[0051] Step 1), molten iron pretreatment: Pour the blast furnace molten iron into the ladle, and perform magnesium blowing desulfurization through the molten iron pretreatment;
[0052] Step 2), converter smelting: Oxygen top-bottom compound blowing converter, pour the molten steel after desulfurization into the oxygen top-bottom compound blowing converter, add scrap steel accounting for 10% of the total weight into the converter at the same time, in the process of blowing to the converter Limestone and fluorite are added into the furnace, when the composition of molten steel [C]≤0.06%, [P]≤0.04%, [S]≤0.15%, when the end point temperature of molten steel is 1680℃, steel is tapped with constant oxygen;
[0053] Step 3), argon blowing: add composite deoxidizer when tapping the converter, blow argon throughout the process of tapping the converter, measu...
Embodiment 2
[0063] A production method for producing non-oriented electrical steel 50W800 by a traditional hot continuous rolling process:
[0064] Step 1), molten iron pretreatment: Pour the blast furnace molten iron into the ladle, and perform magnesium blowing desulfurization through the molten iron pretreatment;
[0065] Step 2), converter smelting: Oxygen top-bottom compound blowing converter, pour the molten steel after desulfurization into the oxygen top-bottom compound blowing converter, add scrap steel accounting for 10% of the total weight into the converter at the same time, in the process of blowing to the converter Limestone and fluorite are added into the furnace, when the composition of molten steel [C]≤0.06%, [P]≤0.04%, [S]≤0.15%, when the end point temperature of molten steel is 1680℃, steel is tapped with constant oxygen;
[0066] Step 3), argon blowing: add composite deoxidizer when tapping the converter, blow argon throughout the process of tapping the converter, measu...
Embodiment 3
[0076] A production method for producing non-oriented electrical steel 50W800 by a traditional hot continuous rolling process:
[0077] Step 1), molten iron pretreatment: Pour the blast furnace molten iron into the ladle, and perform magnesium blowing desulfurization through the molten iron pretreatment;
[0078] Step 2), converter smelting: Oxygen top-bottom compound blowing converter, pour the molten steel after desulfurization into the oxygen top-bottom compound blowing converter, add scrap steel accounting for 10% of the total weight into the converter at the same time, in the process of blowing to the converter Limestone and fluorite are added into the furnace, when the composition of molten steel [C]≤0.06%, [P]≤0.04%, [S]≤0.15%, when the end point temperature of molten steel is 1680℃, steel is tapped with constant oxygen;
[0079] Step 3), argon blowing: add composite deoxidizer when tapping the converter, blow argon throughout the process of tapping the converter, measu...
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