A foot roller device for improving the surface quality of billets

Abstract

This utility model relates to the field of continuous casting equipment, and more particularly to a foot roller device for improving the surface quality of billets. It is installed at the outlet of the crystallizer and includes a mounting base. Four portal-shaped supports are provided at the lower end of the mounting base. Two support shafts are fixedly mounted on each portal-shaped support, and a support roller is rotatably mounted between the two support shafts. Adjacent support rollers are perpendicular to each other. A water supply ring is provided on the side of the mounting base, and multiple water nozzles corresponding to the upper and lower parts of the support rollers are provided at the lower end of the water supply ring. The water supply ring is connected to a water supply mechanism. This utility model has the advantages of supporting and cooling small billets at high casting speeds, thereby improving the surface quality of the small billets.

Description

Technical Field

[0001] This utility model relates to the field of continuous casting equipment, and in particular to a foot roller device for improving the surface quality of billets. Background Technology

[0002] Small square billets are a type of steel billet with equal or nearly equal width and height in cross-section. They are mainly used for rolling profiles, wire rods, and other products. Core application areas include construction, machinery manufacturing, and energy transportation. The surface quality of small square billets directly affects the yield and performance of subsequently rolled steel products and is a key control indicator in steel production. Increasing the drawing speed can reduce the risk of vibration marks and cracks in small square billets and promote hot-feed direct rolling. Increasing the drawing speed requires ensuring the support and cooling of small square billets. Therefore, it is necessary to design a foot roll device that can support and cool small square billets at high drawing speeds. Summary of the Invention

[0003] The purpose of this invention is to provide a foot roller device for improving the surface quality of billets, which supports and cools small billets at high drawing speeds, thereby improving the surface quality of the small billets.

[0004] The technical solution adopted is as follows:

[0005] A foot roller device for improving the surface quality of billets is installed at the outlet of a crystallizer. It includes a mounting base, four portal-shaped supports at the lower end of the mounting base, two support shafts fixedly mounted on each portal-shaped support, and a support roller rotatably mounted between the two support shafts. Adjacent support rollers are perpendicular to each other. A water supply ring is provided on the side of the mounting base, and multiple water nozzles corresponding to the upper and lower support rollers are provided at the lower end of the water supply ring. The water supply ring is connected to a water supply mechanism.

[0006] Preferably, both ends of the support roller are fixedly provided with slag-blocking sleeves sleeved on the support shaft.

[0007] Preferably, the outer surface of the slag-blocking sleeve is frustum-shaped.

[0008] Compared to existing technologies, the advantages are:

[0009] 1. This utility model uses four support rollers to support the small square billet, and uses a water supply mechanism to supply water to the water supply ring. The water in the water supply ring is sprayed out from the water nozzle to cool the support rollers. The temperature difference between the support rollers and the small square billet is used to cool the small square billet. Under high drawing speed, the support and cooling of the small square billet are guaranteed, and the surface quality of the small square billet is improved.

[0010] 2. This utility model is equipped with a slag-blocking sleeve to prevent slag from entering the rotating connection between the support roller and the support shaft. Attached Figure Description

[0011] Figure 1This is a three-dimensional structural diagram of a foot roller device for improving the surface quality of billets according to this utility model.

[0012] Figure 2 This is a front view schematic diagram of a foot roller device for improving the surface quality of billets according to this utility model.

[0013] Figure 3 This is a bottom view schematic diagram of a foot roller device for improving the surface quality of billets according to this utility model.

[0014] In the diagram: 1. Mounting base; 2. Mounting hole; 3. Portal support; 4. Support shaft; 5. Support roller; 7. Slag-blocking sleeve; 8. Water supply ring; 9. Water nozzle. Detailed Implementation

[0015] The present invention will be further described below with reference to specific embodiments, such as... Figures 1 to 3 As shown:

[0016] Example 1: A foot roller device for improving the surface quality of billets is installed at the outlet of a crystallizer. It includes a mounting base 1 with multiple mounting holes 2. The mounting base 1 is installed at the outlet of the crystallizer using bolts. Four portal-shaped supports 3 are provided at the lower end of the mounting base 1, with the four portals spaced 90 degrees apart on the lower end face of the mounting base 1.

[0017] Two support shafts 4 are fixedly installed on each portal support 3. The two support shafts 4 on the same portal support 3 extend coaxially, and a support roller 5 is rotatably installed between the two support shafts 4. Both ends of the support roller 5 are provided with mounting grooves. The support shaft 4 on the same side is inserted into the mounting groove on the same side, so that the support roller 5 is rotatably installed on the portal support. The two adjacent support rollers 5 are perpendicular to each other.

[0018] A water supply ring 8 is provided on the side of the mounting base 1. Multiple water nozzles 9 are provided at the lower end of the water supply ring 8, which correspond to the support rollers 5. The water supply ring 8 is connected to a water supply mechanism. The small billet is supported by the four support rollers 5. Water is supplied to the water supply ring 8 by the water supply mechanism. The water in the water supply ring 8 is sprayed out from the water nozzles 9 to cool the support rollers 5. The temperature difference between the support rollers 5 and the small billet is used to cool the small billet. Under high drawing speed, the support and cooling of the small billet are guaranteed, and the surface quality of the small billet is improved.

[0019] Example 2: A foot roller device for improving the surface quality of billets is installed at the outlet of a crystallizer. It includes a mounting base 1 with multiple mounting holes 2. The mounting base 1 is installed at the outlet of the crystallizer using bolts. Four portal-shaped supports 3 are provided at the lower end of the mounting base 1, with the four portals spaced 90 degrees apart on the lower end face of the mounting base 1.

[0020] Two support shafts 4 are fixedly installed on each portal support 3. The two support shafts 4 on the same portal support 3 extend coaxially, and a support roller 5 is rotatably installed between the two support shafts 4.

[0021] Both ends of the support roller 5 are provided with mounting grooves. The support shaft 4 on the same side is inserted into the mounting groove on the same side, so that the support roller 5 is rotatably mounted on the portal frame. Both ends of the support roller 5 are fixedly provided with slag-blocking sleeves 7 sleeved on the support shaft 4. The slag-blocking sleeves 7 are frustoconical in shape. The slag-blocking sleeves 7 prevent slag from entering the rotational connection between the support roller 5 and the support shaft 4. Two adjacent support rollers 5 are perpendicular to each other. A water supply ring 8 is provided on the side of the mounting base 1. The lower end of the water supply ring 8 is provided with multiple water nozzles 9 corresponding to the upper and lower parts of the support roller 5. The water supply ring 8 is connected to a water supply mechanism.

[0022] The working principle is as follows:

[0023] Four support rollers 5 are used to support the small square billet output from the crystallizer. Water is supplied to the water supply ring 8 by the water supply mechanism. Water in the water supply ring 8 is sprayed out from the water nozzle 9 to cool the support rollers 5. The temperature difference between the support rollers 5 and the small square billet is used to cool the small square billet. Under high drawing speed, the support and cooling of the small square billet are ensured, and the surface quality of the small square billet is improved.

[0024] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A foot roller device for improving the surface quality of billets, installed at the outlet of a crystallizer, characterized in that: The device includes a mounting base (1), and four portal supports (3) are provided at the lower end of the mounting base (1). Two support shafts (4) are fixedly provided on each portal support (3). Support rollers (5) are rotatably provided between the two support shafts (4). The two adjacent support rollers (5) are perpendicular to each other. A water supply ring (8) is provided on the side of the mounting base (1). Multiple water nozzles (9) corresponding to the support rollers (5) are provided at the lower end of the water supply ring (8). A water supply mechanism is connected to the water supply ring (8).

2. The foot roller device for improving the surface quality of a billet as described in claim 1, characterized in that: Both ends of the support roller (5) are fixedly provided with slag-blocking sleeves (7) sleeved on the support shaft (4).

3. The foot roller device for improving the surface quality of a billet as described in claim 2, characterized in that: The outer surface of the slag-blocking sleeve (7) is frustum-shaped.

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