Method for determining head and tail positions and length of mixed cast blank based on continuous molten steel temperature measurement
A technology for mixing billet and molten steel is applied in the field of testing, which can solve problems such as large workload and reduce metal yield, and achieve the effects of improving mixed casting efficiency, improving economic benefits, and improving yield.
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[0019] Example 1: Such as figure 1 As shown, a method for determining the position and length of the head and tail of the mixed-cast billet based on continuous temperature measurement of molten steel takes the following steps:
[0020] When mixing Q345 and IF steel, the Q345 casting temperature is 1530℃, the IF steel casting temperature is 1560℃, and the drawing speed is 1.2m / min.
[0021] 1) At the end of Q345 steel casting, when the remaining molten steel in the tundish 1 is 10% of the total, the nozzle is closed, the continuous casting machine stops, and the tundish 1 is raised so that the immersion nozzle is exposed 60mm above the billet shell;
[0022] 2) Add molten steel splitting agent to mold 2, said molten steel splitting agent is composed of iron powder and rolled steel skin, and the mass percentage of the components of the molten steel splitting agent is: iron powder: 100%, rolled steel skin: 0%, and the average particle size of iron powder and rolled steel skin is: 150-3...
Example Embodiment
[0026] Example 2
[0027] The basic process of a new method for determining the position and length of the mixed pouring billet head and tail based on the continuous temperature measurement technology of molten steel in this embodiment is the same as that of Embodiment 1, except that the continuous temperature measurement device is installed 200mm above the tundish nozzle 4, The average particle size of iron powder and rolled steel skin is 300-500μm.
[0028] In the mixed pouring 60Si 2 Mn steel and 45 # When steel, 60Si 2 Mn steel casting temperature is 1480℃, 45 # The steel casting temperature is 1530°C.
[0029] In this embodiment, a method for determining the position and length of the head and tail of the mixed-cast billet based on continuous temperature measurement of molten steel takes the following steps:
[0030] 1) In 60Si 2 At the end of Mn steel casting, when the remaining molten steel in the tundish 1 is 15% of the total, the nozzle is closed, the continuous casting mach...
Example Embodiment
[0035] Example 3
[0036] The basic process of a new method for determining the position and length of the mixed casting billet head and tail based on the continuous temperature measurement technology of molten steel in this embodiment is the same as that of Embodiment 1, except that the continuous temperature measurement device is installed on the nozzle 4 of the tundish 300 mm.
[0037] In the mixed pouring 60Si 2 Mn steel and 45 # When steel, 60Si 2 Mn steel casting temperature is 1480℃, 45 # The steel casting temperature is 1530°C.
[0038] In this embodiment, a method for determining the position and length of the head and tail of the mixed-cast billet based on continuous temperature measurement of molten steel takes the following steps:
[0039] 1) In 60Si 2 At the end of Mn steel casting, when the remaining molten steel in the tundish 1 is 20% of the total, the nozzle is closed, the continuous casting machine stops, and the tundish 1 is raised so that the immersion nozzle is e...
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