CN218361331U - Intermediate blank plate for finish rolling descaling test - Google Patents

Abstract

The utility model relates to an intermediate slab for finish rolling and descaling test, which comprises a lower striking plate and an upper striking plate, both of which are installed on the main body frame; wherein the upper striking plate is composed of It is composed of the first-stage upper striking plate, the second-stage upper striking plate and the third-stage upper striking plate arranged in sequence from front to back; there is a backing plate at the bottom of each stage’s upper striking plate, and the bottom of the first-stage upper striking plate is the first-order Backing plate, the height of the first-order backing plate is N; the bottom of the second-order upper striking plate is the second-order backing plate, and the height of the second-order backing plate is N+s; The plate height is N+2S. The utility model provides an adjustable stepped finish rolling and descaling test intermediate blank. One plate has three thicknesses, which can simulate intermediate blanks under three thicknesses in one plate-making test. The effect of descaling and blowing can save the lifting time of slabs of different thicknesses on site, reduce the waste of water resources for beating slabs, and reduce the impact of slabs on the roller table because of the light weight of the hollow structure.

Description

Intermediate slab for finish rolling and descaling test

technical field

The utility model discloses a steel plate finish rolling and descaling machine test technology, in particular to an intermediate blank plate for a finish rolling and descaling test.

Background technique

The high-pressure water descaling technology is used in the hot rolling process of steel for the descaling treatment of scale before steel rolling. The high-speed water flow ejected from the high-pressure water nozzle hits the upper and lower surfaces of the rolled piece, and the impact of the high-pressure water makes the iron oxide scale loose; at the same time, the surface temperature of the rolled piece drops rapidly under the difference in the linear expansion coefficient, causing the iron oxide scale to crack and be washed away to achieve descaled iron scale. the goal of.

In production, after the hot slab is coiled at high speed by the hot coil box, it is transported to the finishing mill through the roller table. During this period, it is descaled by the descaling machine. Affect the descaling effect. The upper descaling header is fixed at the entrance of the finishing mill and the upper guide cannot be adjusted in height, so the best descaling effect can only be coordinated by controlling the thickness of the slab. The thickness range of the hot coil box to the first finish rolling mill (seven continuous rolling) is about 20-50mm. Since the thickness of the intermediate slab bitten by the finishing mill has a small variation range, the descaling effect of most finishing mills is guaranteed by the thickness of the intermediate slab in the adjustment of the height parameter. Therefore, before the start-up of the hot rolling equipment, a slab test is required to determine the optimum slab thickness applicable to the system through the slab test.

In the prior art, the plate beating test is that the cold slab is rolled on the line, and the cold steel plate is placed on the roller table, and the cold steel plate is transported through the roller table to pass through the descaler and the hot rolling mill to test the operation effect. It is usually necessary to replace slabs of different thicknesses for multiple tests to determine a better applicable thickness. It takes time to replace and lift steel plates of different thicknesses, so the plate-making test takes a long time, and the descaling header protects the injection state during the conversion of the steel plates, wasting a lot of water resources. On the other hand, the cold slab used in the plate-making test is a solid steel plate. Due to its large weight and hard structure, it has a greater impact on the roller table, which is likely to reduce the life of the roller table idlers. In normal production, the snap-lock idler will cause scratches to the hot billet.

Utility model content

The utility model aims to solve the problems in the prior art that intermediate blanks of different thicknesses need to be exchanged multiple times in the finish rolling descaling test, which is inconvenient for lifting and transportation, takes a long time, and seriously wastes water resources in the exchange process.

The utility model solves the problem, and the technical solution adopted is:

An intermediate slab for finish rolling descaling test, including a beating plate, the beating plate includes a lower beating plate and an upper beating plate, both of the lower beating plate and the upper beating plate are installed on the main body frame; wherein the upper beating plate The striking plate is composed of the first-order upper striking plate, the second-order upper striking plate and the third-order upper striking plate arranged in sequence from front to back; The bottom of the hitting board is the first-order backing board, and the height of the first-order backing board is N; the bottom of the second-order upper hitting board is the second-order backing board, and the height of the second-order backing board is N+s; Backing plate, the height of the third-order backing plate is N+2S.

Adopt the present invention of above-mentioned technical scheme, compared with prior art, its beneficial effect is:

The utility model provides an adjustable step-type finish rolling and descaling test intermediate slab. The height of each layer of the three-layer ladder structure is adjusted by adjusting the backing plate, which can simulate the intermediate blank under three thicknesses in one plate test. Slab descaling effect, on the one hand, can save the lifting time of slabs of different thicknesses on site, and reduce the waste of water resources for slabs; Road impact.

As preferably, the further technical scheme of the utility model is:

Corresponding backing plates at the bottom of the first-stage upper beating plate, the second-stage upper beating plate, and the third-stage upper beating plate are arranged at the front and rear ends thereof. This scheme increases the intensity of the stressed front end and the stressed rear end of each upper striking plate.

The main frame is composed of three assembly frames, each assembly frame is made of angle steel, the inner side of the assembly frame is the installation eaves formed by the bottom of the angle steel, and there are several bolt holes on the installation eaves; the assembly frame and the assembly frame side The side angles are set back to back and bolted. This structure reduces the length of the main frame material and makes the main frame easier to manufacture. Blanks of different thicknesses are installed on each assembly frame, which is convenient for structural adjustment and installation, and also facilitates the expansion of thickness types.

The lower beating plate is divided into three pieces, which are respectively arranged on the upper side of the installation eaves of each assembly frame; the first-order backing plate, second-order backing plate and third-order backing plate are arranged between the lower beating plate and the upper beating plate between. In this example, the upper and lower hitting plates are all arranged in the frame, and the edges are protected by the frame body.

The lower beating plate is one piece, which is fixedly connected to the lower side of the main frame; the first-order backing plate, second-order backing plate and third-order backing plate are arranged between the installation eaves and the upper beating plate. In this example, the top and bottom beating boards are on the outside and the frame is on the inside.

The lower striking plate is fixed to the main frame by welding, and the upper striking plate is fixed to the main frame by bolts. The lower striking plate of this structure is integrated with the main frame structure, and only the upper striking plate that needs to be adjusted in height is designed as a detachable installation structure, which is convenient for the assembly of this scheme.

Description of drawings

Fig. 1 is a three-dimensional view of the overall structure of the utility model.

Fig. 2 is the front structural view of the utility model.

Fig. 3 is a schematic diagram of the ladder structure of the utility model.

Fig. 4 is a top view of an embodiment of the main frame of the present invention.

Figure 5 shows the first embodiment of the assembly of the upper and lower striking plates.

Fig. 6 is the second embodiment of the assembly of the upper and lower striking plates.

In the figure: 1. Main frame; Assembling frame 1-1; 2. Lifting lug; 3. Lower hitting plate; 4. Installation eaves; 5. Third-order backing plate; 6. Second-order backing plate; Backing board; 8, the upper hitting board of the first step; 9, the upper hitting board of the second step; 10, the upper hitting board of the third step.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

As shown in Figures 1 to 3, the middle blank plate for finishing rolling and descaling test provided by the utility model includes a lower hitting plate 3 and an upper hitting plate, the upper hitting plate is the top plate of the middle blank plate, and the lower hitting plate The plate 3 is the lower surface of the middle base plate, and the middle of the upper beating plate and the lower beating plate 3 is a hollow space.

The upper striking plate of the utility model is composed of a first-order upper striking plate 8, a second-order upper striking plate 9 and a third-order upper striking plate 10 arranged in sequence from front to back, and a backing plate is arranged at the bottom of each upper striking plate , specifically, a first-order backing plate 7 is provided at the bottom of the first-order upper beating plate 8, and the height of the first-order backing plate 7 is N; It is N+s; the bottom of the third-stage upper hitting plate 10 is provided with a third-stage backing plate 5, and the height of the third-stage backing plate 5 is N+2S. The lower beating plate 3 and the upper beating plate are installed on the main body frame 1 .

The main body frame 1 of the utility model is formed by welding angle steels, and the angle steels are arranged horizontally and vertically and fixed by welding. For the convenience of installing three upper striking plates, two groups of angle steels are set in the middle, forming an installation eaves 4 at the bottom of the frame, and three upper striking plates can be placed on the installation eaves. The main frame 1 is 3000mm long and 1500mm wide. Due to the large format, it can be divided into multiple assembly frames for assembly. As shown in Figure 4, the specific embodiment of the main frame 1 provided by the utility model, the main frame 1 is composed of three assembly frames, and each assembly frame Made of angle steel, the inner side of the assembly frame is an installation eaves 4 composed of angle steel bottom plates, and the installation eaves 4 are provided with a number of bolt holes 4-1; the assembly frame and the angle steel on the side of the assembly frame are set back to back and bolted. Each combo box corresponds to an upper hitpad.

Assembly embodiment one of the upper and lower striking plates of the utility model: as shown in Figure 5, the lower striking plate 3 is divided into three pieces, which are respectively arranged on the upper side of the installation eaves 4 of each grouping frame; the first-order backing plates 7, two The step backing plate 6 and the third step backing plate 5 are arranged between the lower beating plate 3 and the upper beating plate. In this example, the upper and lower hitting plates are all arranged in the frame, and the edge of the steel plate is protected by the frame.

Assembly embodiment 2 of the upper and lower striking plates of the present utility model: as shown in Figure 6, the lower striking plate is one piece, which is fixedly connected to the lower side of the main body frame; the first-order backing plate, second-order backing plate and third-order backing plate Set between the installation eaves and the upper striking plate. In this structure, the upper and lower hitting plates cover the frame body, the steel plate is on the outside, and the assembly frame is inside.

The lower beating plate 3 is welded and fixed to the main frame 1, and the upper beating plate is fixed to the main frame with bolts. In this structure, the lower striking plate 3 is integrated with the main frame 1, and only the upper striking plate that needs to be adjusted in height is designed as a detachable installation structure, which is convenient for the assembly of this scheme.

The main body frame 1 is provided with lifting lugs 2, and the lifting lugs 2 are distributed on the main body frame in the form of 2*4, and the lifting lugs 2 facilitate the hoisting and transportation of the intermediate blank of the utility model.

Before the plate test, select three sets of backing plates with different heights, such as one set of 5mm, 15mm, and 25mm. The upper percussion plate and the lower percussion plate are painted, and the three upper percussion plates are placed on the three kinds of backing plates to form the middle blank with a stepped upper surface. The three thicknesses are 30mm, 40mm and 50mm respectively. The upper striker plate is attached to the beam using the set screws. The intermediate slab is placed on the finish rolling entrance roller table through lifting lugs. After the steel wire rope is removed, the intermediate slab is transported into the finishing mill by starting the finish rolling entrance roller table. The rolls of the finishing mill are raised, and the high-pressure water descaling system is switched to the slab test mode, and the high-pressure water descaling test is carried out in cooperation with the entrance and exit rollers. After the beating test, the middle slab exits the finishing mill through the roller table, and is hoisted away by the lifting lug 2.

The utility model provides an adjustable step-type finish rolling and descaling test intermediate slab. The height of each layer of the three-layer ladder structure is adjusted by adjusting the backing plate, which can simulate the intermediate blank under three thicknesses in one plate test. Blank descaling blow effect. On the one hand, it can save the lifting time of slabs of different thicknesses on site and reduce the waste of water resources for slabs; on the other hand, compared with the solid intermediate blanks of the same thickness, the weight is greatly reduced, which can reduce the impact on the roller table.

The scheme described in the above description is only a partial example of the intermediate blank for the plate punching test of the present invention. The utility model is not limited to the above-mentioned intermediate blank structure with three integrated thicknesses, and tests with more thicknesses can also be set. It is not limited to the change from small thickness to large thickness in the above description, and a step form of change from large thickness to small thickness can also be added.

The above description is only a preferred and feasible embodiment of the utility model, and does not limit the scope of rights of the utility model. within the scope of rights.

Claims (6)

1. The utility model provides a blank in middle of finish rolling descaling test, is including hitting the slabbing plate, its characterized in that: the striking plate comprises a lower striking plate and an upper striking plate, and the lower striking plate and the upper striking plate are both arranged on the main body frame; the upper striking plate consists of a first-order upper striking plate, a second-order upper striking plate and a third-order upper striking plate which are sequentially arranged from front to back; the bottom of each step upper striking plate is provided with a base plate, wherein the bottom of the first step upper striking plate is provided with a first step base plate, and the height of the first step base plate is N; the bottom of the second-order upper striking plate is a second-order base plate, and the height of the second-order base plate is N + s; the bottom of the third-order upper striking plate is a third-order base plate, and the height of the third-order base plate is N +2S.

2. The finish rolling descaling test intermediate slab according to claim 1, wherein: the corresponding base plates at the bottoms of the first-order upper striking plate, the second-order upper striking plate and the third-order upper striking plate are arranged at the front end and the rear end of the base plates.

3. The finish rolling descaling test intermediate slab according to claim 2, wherein: the main body frame is formed by combining three matched frames, each matched frame is made of angle steel, the inner side of each matched frame is an installation ledge formed by the bottom of the angle steel, and a plurality of bolt holes are formed in the installation ledge; the assembly frame and the angle steel on the side of the assembly frame are arranged back to back and are fixedly connected through bolts.

4. The finish rolling descaling test intermediate slab according to claim 3, wherein: the lower striking plate is divided into three parts which are respectively arranged on the upper sides of the mounting eaves of the assembling frames; the first-order base plate, the second-order base plate and the third-order base plate are arranged between the lower striking plate and the upper striking plate.

5. The finish rolling descaling test intermediate slab according to claim 3, wherein: the lower striking plate is a block and is fixedly connected to the lower side of the whole main body frame; the first-order base plate, the second-order base plate and the third-order base plate are arranged between the mounting eaves and the upper striking plate.

6. The finish rolling descaling test intermediate slab according to claim 4 or 5, wherein: the lower striking plate is welded and fixed with the main body framework, and the upper striking plate is fixed with the main body framework through bolts.

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