A manufacturing method of thin-gauge high-ti wear-resistant steel nm450
A manufacturing method and wear-resistant steel technology, which is applied in the field of wear-resistant steel plate manufacturing, can solve the problems of high price and long delivery cycle, and achieve the effects of improving the ratio of strength and toughness, reducing production costs, and reducing the amount of addition
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Embodiment 1
[0029] A method for manufacturing thin-gauge high-Ti wear-resistant steel NM450, comprising steps:
[0030] (1) The qualified molten iron with a temperature > 1250°C and [S] ≤ 0.020% (mass percentage of S in molten iron) is first subjected to slag removal treatment, and KR is carried out according to the temperature, weight and sulfur content requirements of the incoming molten iron. S removal, [S] is 0.0010%, using the whole process of argon blowing process, the final slag basicity is 3.0;
[0031] (2) Carry out converter smelting, use pellets as coolant, pellets and iron oxide scale must be added in accordance with relevant regulations; fluorite should be added in small amounts in batches according to the slag in the furnace, the amount added per ton of steel is 3.9kg, blowing It is strictly forbidden to add fluorite 2 minutes before the end point. Use slag-stopping cones and slag-stopping plugs to carry out double-stopping slag tapping, and the slag thickness is 48mm; Add ...
Embodiment 2
[0047] A method for manufacturing thin-gauge high-Ti wear-resistant steel NM450, comprising steps:
[0048] (1) The qualified molten iron with a temperature > 1250°C and [S] ≤ 0.020% (mass percentage of S in molten iron) is first subjected to slag removal treatment, and KR is carried out according to the temperature, weight and sulfur content requirements of the incoming molten iron. Desulphurization, [S] is 0.0010%, the whole process of argon blowing is adopted, and the final slag has a basicity of 3.5;
[0049] (2) Carry out converter smelting, use pellets as coolant, pellets and iron oxide scale must be added in accordance with relevant regulations; fluorite should be added in small batches according to the slag in the furnace, the amount of 3.2kg per ton of steel, blowing It is strictly forbidden to add fluorite 2 minutes before the end point, use slag blocking cone and slag plug to carry out double blocking slag tapping, and the slag thickness is 45mm; in the process of c...
Embodiment 3
[0065] A method for manufacturing thin-gauge high-Ti wear-resistant steel NM450, comprising steps:
[0066] (1) The qualified molten iron with a temperature > 1250°C and [S] ≤ 0.020% (mass percentage of S in molten iron) is first subjected to slag removal treatment, and KR is carried out according to the temperature, weight and sulfur content requirements of the incoming molten iron. S removal, [S] is 0.0010%, using argon blowing process throughout, final slag alkalinity 3.0;
[0067] (2) Carry out converter smelting, use pellets as coolant, pellets and iron oxide scale must be added in accordance with relevant regulations; fluorite should be added in small batches according to the slag in the furnace, the amount of 3.2kg per ton of steel, blowing It is strictly forbidden to add fluorite 2 minutes before the end point. Use slag-stopping cones and slag-stopping plugs for double-stopping slag tapping, and the slag thickness is 40mm; Add composite deoxidizer and metal aluminum blo...
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