A heat treatment process for high magnetic induction oriented silicon steel
A high magnetic induction oriented and oriented silicon steel technology, which is applied in metal material coating process, solid-state diffusion coating, coating, etc., can solve the problems of rough surface, high iron loss, poor corrosion resistance of silicon steel, etc., and achieve the goal of coating The effect of good quality and excellent magnetic properties
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Embodiment 1
[0022] A heat treatment process for high magnetic induction oriented silicon steel, comprising the following steps:
[0023] 1) Smelting: use a converter or an electric furnace to make steel, and the molten steel is refined and continuously cast to obtain thin steel ingots;
[0024] 2) Hot rolling: heating the thin steel ingot to 1000°C, and hot rolling it into a hot-rolled steel strip with a thickness of 1.0mm; the hot rolling start temperature of the thin steel ingot is 1050°C, and the final rolling temperature is 750°C, and Carry out the first pass of hot rolling with a reduction of 40%;
[0025] 3) Cold rolling: roll into a 0.2mm cold-rolled plate by one-time cold rolling, and the final reduction rate is 82%;
[0026] 4) Intermediate annealing: Wet N at 750°C 2 +H 2 The decarburization annealing treatment is carried out in the atmosphere, followed by the continuous furnace p(H 2 O) / p(H 2 ) 2 +H 2 Carry out continuous nitriding treatment at 900°C in the atmosphere, ho...
Embodiment 2
[0031] A heat treatment process for high magnetic induction oriented silicon steel, comprising the following steps:
[0032] 1) Smelting: use a converter or an electric furnace to make steel, and the molten steel is refined and continuously cast to obtain thin steel ingots;
[0033] 2) Hot rolling: the thin steel ingot is heated to 1100°C, and hot rolled into a hot-rolled steel strip with a thickness of 2.0mm; the hot rolling start temperature of the thin steel ingot is 1100°C, and the final rolling temperature is 800°C, and Carry out the first pass of hot rolling with a reduction of 45%;
[0034] 3) Cold rolling: roll into a 0.3mm cold-rolled sheet by one-time cold rolling, and the final reduction rate is 85%;
[0035] 4) Intermediate annealing: Wet N at 850°C 2 +H 2 The decarburization annealing treatment is carried out in the atmosphere, followed by the continuous furnace p(H 2 O) / p(H 2 ) 2 +H 2 Carry out continuous nitriding treatment at 1000°C in the atmosphere, hol...
Embodiment 3
[0040] A heat treatment process for high magnetic induction oriented silicon steel, comprising the following steps:
[0041] 1) Smelting: use a converter or an electric furnace to make steel, and the molten steel is refined and continuously cast to obtain thin steel ingots;
[0042] 2) Hot rolling: the thin steel ingot is heated to 1200°C, and hot rolled into a hot-rolled steel strip with a thickness of 4.0mm; the hot rolling start temperature of the thin steel ingot is 1080°C, and the final rolling temperature is 780°C, and Carry out the first pass of hot rolling with a reduction of 40%;
[0043] 3) Cold rolling: roll into a 0.5mm cold-rolled plate with a single cold rolling method, and the final reduction rate is 83%;
[0044] 4) Intermediate annealing: Wet N at 750-850°C 2 +H 2 The decarburization annealing treatment is carried out in the atmosphere, followed by the continuous furnace p(H 2 O) / p(H 2 ) 2 +H 2 Carry out continuous nitriding treatment at 950°C in the atm...
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Abstract
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