Tundish constant-temperature casting device capable of reducing slag inclusion

Abstract

The utility model relates to the field of pouring equipment, in particular to a tundish constant-temperature pouring device capable of reducing slag inclusion, which comprises a pouring cavity and a steel receiving cavity, a steel inlet is arranged at the upper end of the steel receiving cavity, the steel receiving cavity is provided with two molten steel runners, a heating mechanism is arranged between the steel receiving cavity and the pouring cavity, and the heating mechanism is sleeved on the outer sides of the molten steel runners. A temperature measuring mechanism is inserted into the pouring cavity, stopper mechanisms are arranged at the two ends of the pouring cavity, and water gaps are correspondingly formed in the pouring cavity at the lower ends of the stopper mechanisms. The device has the advantages that cooling of tundish molten steel is compensated, constant-temperature pouring is achieved, slag inclusion is reduced, the purity of the molten steel is improved, and the quality of casting blanks is improved.

Description

Technical Field

[0001] The utility model relates to the field of casting equipment, in particular to a tundish constant temperature casting device for reducing slag inclusions. Background Art

[0002] The tundish is a refractory container used in the steelmaking process. Its main function is to receive the molten steel flowing out of the ladle and distribute it to various crystallizers through the various water inlets of the tundish. During the period when the molten steel flows in the tundish, the molten steel will cool down in the tundish, which will cause the viscosity of the molten steel to increase, resulting in an increase in defects caused by inclusions, and affecting the final molding quality of the steel billet. Therefore, during the process of the molten steel flowing in the tundish, it is particularly necessary to reduce the loss of molten steel temperature, keep the molten steel in the tundish stable, reduce slag inclusions, improve the purity of molten steel, and improve the quality of the casting. Summary of the Invention

[0003] The utility model aims to provide a tundish constant temperature casting device which can reduce slag inclusions, and has the advantages of reducing slag inclusions, improving the purity of molten steel and improving the quality of cast billets.

[0004] The technical solutions adopted are as follows:

[0005] A tundish constant temperature casting device for reducing slag inclusions comprises a casting chamber and a steel receiving chamber, wherein a steel inlet is provided at the upper end of the steel receiving chamber, two molten steel flow channels are provided in the steel receiving chamber, a heating mechanism is provided between the steel receiving chamber and the casting chamber, the heating mechanism is sleeved on the outside of the molten steel flow channels, a temperature measuring mechanism is inserted in the casting chamber, stopper rod mechanisms are provided at both ends of the casting chamber, and a water outlet is provided corresponding to the casting chamber at the lower end of the stopper rod mechanism.

[0006] Preferably, there are two temperature measuring mechanisms and both are continuous temperature measuring rods.

[0007] Preferably, the heating mechanism is an electromagnetic induction heating coil.

[0008] Preferably, the electromagnetic induction heating coil is provided with a circulating water cooling mechanism.

[0009] Preferably, a slag retaining dam is provided in the casting cavity, the slag retaining dam is provided outside the water inlet, and a diversion hole is provided on the slag retaining dam.

[0010] Compared with the existing technology, the beneficial effects are:

[0011] The utility model utilizes the heating mechanism to provide heat to compensate for the cooling of the molten steel in the tundish, maintains the molten steel in the tundish within a suitable temperature range, realizes constant temperature casting, reduces slag inclusions, improves the purity of the molten steel, and thus improves the quality of the casting billet. At the same time, it can reduce the upper steel temperature of the refining furnace and reduce the power consumption of the refining furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a three-dimensional structural diagram of a tundish constant temperature casting device for reducing slag inclusions in the utility model.

[0013] Figure 2 This is a schematic diagram of the internal structure of the casting cavity of a tundish constant temperature casting device for reducing slag inclusions in the utility model.

[0014] In the figure: 1. Casting cavity; 2. Steel receiving cavity; 3. Steel inlet; 4. Molten steel flow channel; 5. Heating mechanism; 6. Temperature measuring mechanism; 7. Stopper mechanism; 8. Slag dam; 9. Diversion hole. DETAILED DESCRIPTION

[0015] The present invention will be further described below with reference to specific embodiments. Figures 1 to 2 As shown:

[0016] Example 1: A constant temperature casting device for a tundish for reducing slag inclusions comprises a casting chamber 1 and a steel receiving chamber 2. A steel inlet 3 is provided at the upper end of the steel receiving chamber 2. The steel receiving chamber 2 is provided with two molten steel flow channels 4. Molten steel poured out of the refining furnace enters the steel receiving chamber 2 from the steel inlet 3 and flows from the steel receiving chamber 2 into the two molten steel flow channels 4. The molten steel flows from the molten steel flow channels 4 into the casting chamber 1.

[0017] A heating mechanism 5 is provided between the steel receiving chamber 2 and the pouring chamber 1. The heating mechanism 5 is sleeved on the outside of the molten steel flow channel 4. The heating mechanism 5 heats the molten steel flowing in the molten steel flow channel 4 to compensate for the heat loss of the molten steel entering the tundish, so that the temperature of the molten steel remains constant. A temperature measuring mechanism 6 is inserted into the pouring chamber 1 to monitor the temperature of the molten steel entering the pouring chamber 1, thereby providing a reference for the upper steel temperature.

[0018] Both ends of the casting cavity 1 are provided with a stopper rod mechanism 7, and the casting cavity 1 at the lower end of the stopper rod mechanism 7 is correspondingly provided with a water nozzle. The stopper rod mechanism 7 controls the opening and closing of the water nozzle and is used to discharge the molten steel in the casting cavity 1. After the molten steel is poured out of the refining furnace, it enters the steel receiving cavity 2 along the steel inlet 3. During the time when the molten steel stays in the steel receiving cavity 2, large particles of slag inclusions float up, reducing the slag inclusions in the molten steel. The molten steel enters the casting cavity 1 along the molten steel flow channel 4. After entering the casting cavity 1, the molten steel flows upward, and the floating of slag inclusions is utilized to improve the purity of the molten steel, thereby improving the quality of the casting.

[0019] Example 2: A constant temperature casting device for a tundish for reducing slag inclusions comprises a casting chamber 1 and a receiving chamber 2. A steel inlet 3 is provided at the upper end of the receiving chamber 2. The receiving chamber 2 is provided with two molten steel flow channels 4. Molten steel poured out of the refining furnace enters the receiving chamber 2 from the steel inlet 3 and flows from the receiving chamber 2 into the two molten steel flow channels 4. The molten steel flows from the molten steel flow channels 4 into the casting chamber 1.

[0020] A heating mechanism 5 is provided between the steel receiving cavity 2 and the pouring cavity 1. The heating mechanism 5 is sleeved on the outside of the molten steel flow channel 4. The heating mechanism 5 is an electromagnetic induction heating coil. The heating mechanism 5 heats the molten steel flowing in the molten steel flow channel 4 to compensate for the heat loss of the molten steel entering the tundish, so that the temperature of the molten steel remains constant. The induced current generated by the electromagnetic induction heating coil produces a pinching force on the molten steel in the molten steel flow channel 4 to remove small inclusions. The electromagnetic induction heating coil is provided with a circulating water cooling mechanism to avoid damage to the electromagnetic induction heating coil due to high temperature.

[0021] A temperature measuring mechanism 6 is inserted into the pouring cavity 1 to monitor the temperature of the molten steel entering the pouring cavity 1, thereby providing a reference for the upper steel temperature. The temperature measuring mechanism 6 has two continuous temperature measuring rods, which are prior art and will not be described in detail here.

[0022] Both ends of the casting cavity 1 are provided with stopper rod mechanisms 7, and the casting cavity 1 at the lower end of the stopper rod mechanism 7 is correspondingly provided with a water outlet. The stopper rod mechanism 7 controls the opening and closing of the water outlet and is used to discharge the molten steel in the casting cavity 1. A slag dam 8 is provided in the casting cavity 1. The slag dam 8 is provided on the outside of the water outlet, and a diversion hole 9 is provided on the slag dam 8.

[0023] The specific working process is as follows: after the molten steel is poured out from the refining furnace, it enters the steel receiving chamber 2 along the steel inlet 3. During the time when the molten steel stays in the steel receiving chamber 2, large particles of slag inclusions float up, reducing the slag inclusions in the molten steel. The molten steel enters the casting chamber 1 along the molten steel flow channel 4. During the flow in the molten steel flow channel 4, the electromagnetic induction heating coil uses electromagnetic induction to heat the molten steel in the molten steel flow channel 4 to compensate for the temperature loss of the molten steel. After entering the casting chamber 1, the molten steel flows upward, and the floating of slag inclusions is used to improve the purity of the molten steel, thereby improving the quality of the casting.

[0024] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A tundish constant temperature casting device for reducing slag inclusions, characterized by: The invention comprises a casting chamber (1) and a steel receiving chamber (2), wherein the upper end of the steel receiving chamber (2) is provided with a steel inlet (3), the steel receiving chamber (2) is provided with two molten steel flow channels (4), a heating mechanism (5) is provided between the steel receiving chamber (2) and the casting chamber (1), the heating mechanism (5) is sleeved on the outer side of the molten steel flow channel (4), a temperature measuring mechanism (6) is inserted into the casting chamber (1), stopper rod mechanisms (7) are provided at both ends of the casting chamber (1), and the casting chamber (1) at the lower end of the stopper rod mechanism (7) is provided with a water outlet.

2. The tundish constant temperature casting device for reducing slag inclusions according to claim 1, characterized in that: There are two temperature measuring mechanisms (6), both of which are continuous temperature measuring rods.

3. The tundish constant temperature casting device for reducing slag inclusions according to claim 1, characterized in that: The heating mechanism (5) is an electromagnetic induction heating coil.

4. The tundish constant temperature casting device for reducing slag inclusions according to claim 3, characterized in that: The electromagnetic induction heating coil is provided with a circulating water cooling mechanism.

5. The tundish constant temperature casting device for reducing slag inclusions according to claim 1, characterized in that: A slag retaining dam (8) is provided in the casting cavity (1), the slag retaining dam (8) is provided outside the water inlet, and a diversion hole (9) is provided on the slag retaining dam (8).

Images