A hot cutting machine for adjusting the width of continuous casting slabs

Abstract

The present invention relates to a hot cutting machine for adjusting the width of a continuous casting machine, and belongs to the technical field of continuous casting machine equipment in the metallurgical industry. The technical scheme is: a centering and positioning scale (6) is fixed on a steel rail, a movable stop iron slideway (19) is arranged in parallel on the outer side of another steel rail, a movable limit stop iron (10) and a fixed limit stop iron (18) are respectively arranged on the movable stop iron slideway (19); a centering and positioning reference column (7), a water-cooled centering support roller (9) and a water-cooled centering drive roller (11) are respectively arranged between the two steel rails, the water-cooled centering drive roller (11) is parallel to the track (1), the water-cooled centering support roller (9) is perpendicular to the track (1), a water-cooled flame cutting machine trolley assembly (2) is arranged on the track (1), and a fixed cutting trolley (4) and a movable cutting trolley (15) are respectively arranged on the trolley travel track (20). The beneficial effect of the present invention is that the hot cutting of the adjustable width slab can be realized online, thereby improving production efficiency.

Description

Technical Field

[0001] The invention relates to a hot cutting machine for adjusting the width of a continuous casting machine slab, belonging to the technical field of adjusting the width of a continuous casting machine slab finishing equipment in the metallurgical industry. Background Art

[0002] With the development of science and technology and the need for production according to customer needs, the online width adjustment process of slab continuous casting machines is being promoted and popularized. When the continuous casting machine is adjusted online, the cross-sectional width of the ingot changes from wide to narrow or from narrow to wide. Each adjustment will produce a transitional steel billet with a shape close to a trapezoid, one end of which is the cross-sectional width before adjustment, and the other end is the cross-sectional width after adjustment. The width adjustment billet cutting process is to process and cut the transitional ingot with one end wide and the other end narrow produced by each width adjustment into a rectangular billet equal to the narrow cross-sectional size, and finally enter the rolling line to become a finished product.

[0003] At present, the traditional cutting method is semi-manual cutting, which is to first air-cool the hot steel billet to room temperature, and then use a steel plate cutting trolley to cut off the trapezoidal parts produced when the steel billet is adjusted in width one by one by measuring and drawing lines, turning it into a standard rectangular slab, and then sending it to the rolling production line for rolling into finished products. This cutting method has low cutting efficiency and wastes energy. Summary of the invention

[0004] The purpose of the present invention is to provide a continuous casting machine width-adjustable slab hot cutting machine, which can realize the hot cutting of the width-adjustable slab online and solve the problems existing in the background technology.

[0005] The technical solution of the present invention is:

[0006] A hot cutting machine for adjusting the width of a continuous casting machine slab, comprising a track, a water-cooled flame cutting machine trolley assembly, a trolley driving device, a fixed cutting trolley, a fixed water-cooled cutting gun, a centering positioning scale, a centering positioning reference column, a water-cooled centering support roller, a movable limit stop, a water-cooled centering drive roller, a centering drive assembly, a proximity switch limit one, a digital fixed width scale, a mobile water-cooled cutting gun, a mobile cutting trolley, a proximity switch limit two, a fixed limit stop and a mobile stop slide; the track comprises two parallel steel rails, the centering positioning scale is fixed on one steel rail, the mobile stop slide is arranged in parallel on the outside of the other steel rail, and the mobile limit stop and the fixed limit stop are respectively arranged on the mobile stop slide; the centering positioning reference column, the water-cooled centering support roller, the movable limit stop, the water-cooled centering drive roller, the centering drive assembly device, the proximity switch limit one, the digital fixed width scale, the mobile water-cooled cutting gun, the mobile cutting trolley, the proximity switch limit two, the fixed limit stop and the mobile stop slide; the track comprises two parallel steel rails, the centering positioning scale is fixed on one steel rail, the mobile stop slide is arranged in parallel on the outside of the other steel rail, and the mobile limit stop and the fixed limit stop are respectively arranged on the mobile stop slide; the centering positioning reference column, the water-cooled centering support roller, the movable limit stop, the water-cooled centering drive roller, the water-cooled centering drive assembly device ... The roller and the water-cooled centering drive roller are respectively arranged between two rails, the water-cooled centering drive roller is parallel to the rail, the water-cooled centering support roller is perpendicular to the rail, and the centering positioning reference column is close to the water-cooled centering support roller; the water-cooled flame cutting machine trolley assembly is arranged on the rail, the trolley drive device is drivingly connected to the water-cooled flame cutting machine trolley assembly, the water-cooled flame cutting machine trolley assembly has a trolley travel track arranged perpendicular to the track, the fixed cutting trolley and the mobile cutting trolley are respectively arranged on the trolley travel track, the fixed cutting trolley and the mobile cutting trolley are respectively provided with a fixed water-cooled cutting gun and a mobile water-cooled cutting gun, and a proximity switch limit 1, a digital fixed width scale and a proximity switch limit 2 are provided on the side of the water-cooled flame cutting machine trolley assembly close to the mobile iron stop slide.

[0007] The centering and positioning scale is arranged perpendicular to the track.

[0008] The water-cooled centering drive roller is drivingly connected to the centering drive assembly device.

[0009] The beneficial effects of the present invention are: hot cutting of width-adjustable slabs can be realized online, production efficiency is greatly improved, and energy consumption is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the width-adjustable steel billet after centering according to the present invention;

[0011] Figure 2 This is a schematic diagram of the width-adjustable billet before centering according to the present invention;

[0012] In the figure: track 1, water-cooled flame cutting machine trolley assembly 2, trolley drive device 3, fixed cutting trolley 4, water-cooled cutting gun 5, centering positioning scale 6, centering positioning reference column 7, width-adjusting billet 8, water-cooled centering support roller 9, movable limit stop 10, water-cooled centering drive roller 11, proximity switch limit 12, digital fixed width scale 13, water-cooled cutting gun 14, mobile cutting trolley 15, proximity switch limit 16, centering drive combination device 17, fixed limit stop 18, movable stop slide 19, trolley travel track 20. DETAILED DESCRIPTION

[0013] The present invention will be further described below by way of examples with reference to the accompanying drawings.

[0014] See attached Figure 1 , 2 A hot cutting machine for adjusting the width of a continuous casting machine slab comprises a track 1, a water-cooled flame cutting machine trolley assembly 2, a trolley driving device 3, a fixed cutting trolley 4, a fixed water-cooled cutting gun 5, a centering and positioning scale 6, a centering and positioning reference column 7, a water-cooled centering support roller 9, a movable limit stop 10, a water-cooled centering drive roller 11, a proximity switch limit one 12, a digital fixed width scale 13, a mobile water-cooled cutting gun 14, a mobile cutting trolley 15, a proximity switch limit two 16, a centering drive assembly 17, a fixed limit stop 18 and a mobile stop slide 19; the track 1 comprises two parallel rails, the centering and positioning scale 6 is fixed on one rail, the mobile stop slide 19 is arranged in parallel on the outside of the other rail, and the movable limit stop 10 and the fixed limit stop 18 are respectively arranged on the movable stop slide 19; the centering and positioning reference column 7, the water-cooled centering support roller 9, the movable limit stop 10, the water-cooled centering drive roller 11, the proximity switch limit one 12, the digital fixed width scale 13, the mobile water-cooled cutting gun 14, the mobile cutting trolley 15, the proximity switch limit two 16, the centering drive assembly 17, the fixed limit stop 18 and the mobile stop slide 19; the track 1 comprises two parallel rails, the centering and positioning scale 6 is fixed on one rail, the mobile stop slide 19 is arranged in parallel on the outside of the other rail, and the movable limit stop 10 and the fixed limit stop 18 are respectively arranged on the movable stop slide 19; the centering and positioning reference column 7, the water-cooled centering support roller 9, the movable limit stop 10 and the fixed limit stop 18 are respectively arranged on the movable stop slide 19; the water-cooled center The support roller 9 and the water-cooled centering drive roller 11 are respectively arranged between the two rails, the water-cooled centering drive roller 11 is parallel to the track 1, the water-cooled centering support roller 9 is perpendicular to the track 1, and the centering positioning reference column 7 is close to the water-cooled centering support roller 9; the water-cooled flame cutting machine trolley assembly 2 is arranged on the track 1, the trolley drive device 3 is drivingly connected to the water-cooled flame cutting machine trolley assembly 2, the water-cooled flame cutting machine trolley assembly 2 has a trolley travel track 20 arranged vertically to the track 1, the fixed cutting trolley 4 and the mobile cutting trolley 15 are respectively arranged on the trolley travel track 20, the fixed cutting trolley 4 and the mobile cutting trolley 15 are respectively provided with a fixed water-cooled cutting gun 5 and a mobile water-cooled cutting gun 14, and a proximity switch limit 12, a digital fixed width scale 13 and a proximity switch limit 2 16 are provided on one side of the water-cooled flame cutting machine trolley assembly 2 close to the mobile iron stop slide 19.

[0015] In this embodiment, refer to the attached Figure 1 , 2, track 1 is QU70 rail, size 11900mm*2, water-cooled flame cutting machine trolley assembly 2 is riveted steel structure, size 4500mm*1900mm*1300mm, trolley drive device 3 is standard crane mechanical part, model LD40, fixed cutting trolley 4 is riveted mechanical assembly, size 400mm*300mm*500mm, fixed water-cooled cutting gun 5 size φ50mm*119 0mm, the centering ruler 6 is a stainless steel ruler with a size of φ30mm*3190mm, the centering reference column 7 is a 45# round steel with a size of φ100*800, the width adjustment billet 8 has an overall size of 1300mm*190mm*11900mm, the water-cooled centering support roller 9 is a mechanical part with a size of φ50mm*1190mm, the movable limit stop 10 is a riveted part with a size of 100mm*80mm*60mm, and the water The cold centering drive roller 11 has a size of φ50mm*1190mm, the proximity switch limit 12 is an electrical component of φ30mm*80mm, the digital fixed width scale 13 is an electronic component, and the overall size is 100mm*160mm*60mm, the mobile water-cooled cutting gun 14 and the mobile cutting trolley 15 are riveted and welded mechanical assemblies, and the overall size is 400mm*300mm*500mm, the proximity switch limit 2 16 is an electrical component of φ30mm*80mm, the centering drive assembly 17 is a mechanical assembly, and the overall size is 400mm*300mm*500mm, the fixed limit stop 18 is a riveted and welded part, and the size is 100mm*80mm*60mm, the movable stop slide 19 is a riveted and welded part, and the size is 11900mm*80mm*60mm, and the trolley walking track 20 is a riveted and welded mechanical processing assembly, and the overall size is 4000mm*80mm*60mm.

[0016] See attached Figure 1 , 2The water-cooled flame cutting machine trolley assembly 2 is installed above the cutting track 1, the fixed cutting trolley 4 and the mobile cutting trolley 15 are suspended on the trolley travel track 20 above the trolley, the fixed water-cooled cutting gun 5 and the mobile water-cooled cutting gun 14 are respectively vertically fixed on the fixed cutting trolley 4 and the mobile cutting trolley 15, the digital width scale digital display 13 is fixed at one end of the cutting mobile trolley end beam, and the other end is connected to the mobile cutting trolley 15, the centering and positioning scale 6 is installed on the same side of the A point positioning cylindrical structure and is kept horizontal with the horizontal center line of the billet, the water-cooled centering drive roller 11 is arranged horizontally at one end of the center line of the trolley track, the water-cooled centering drive roller 11 is connected to the centering drive assembly 17 through an extended universal coupling, and is installed in a T-shape with the water-cooled centering support roller 9 at the other end of the center line of the trolley track, and has the same horizontal elevation as the centering support roller 9, and the three points C\D\E\ form a horizontal support plane. The movable iron block slide 19 is installed on one side of the cutting track 1, the proximity switch limit 2 16 and the proximity switch limit 1 12 are respectively installed on the end beams on the same side of the movable iron block slide 19, the fixed limit block 18 is installed and fixed at one end of the movable iron block slide 19, and the movable limit block 10 can be slid and positioned arbitrarily on the movable iron block slide 19.

[0017] The specific workflow is as follows:

[0018] See attached Figure 1 :L1, L2, L3, L4 are: L1 = width of the large section of the billet, L2 = width of the small section of the billet, L3 = size of (L1-L2) / 2, L4 = size required for centering of ruler 6 = size of L3. The logical relationship between L1, L2, L3, L4 is as follows Figure 1 As shown, the slab is moved by rotating the centering drive roller 11 to change the size value of the centering scale 6. When the size value L4 of the centering target value scale 6 is close to L3= (L1-L2) / 2 (±2mm), the three points A, B and the fixed cutting gun 5 form a straight line, and the AB line required for cutting is formed, that is, the longitudinal center line of the slab is absolutely parallel to the moving center lines of the two cutting guns.

[0019] (1) Rough centering of widened billet

[0020] See attached Figure 2 , the continuous casting machine adjusts the width of the hot steel billet, and uses a crane to lift it onto the water-cooled centering support roller 9 and the water-cooled centering drive roller 11. When placing it, any point on the straight edge on the right side of the billet is close to point A. The position of the billet is appropriately selected according to the length that needs to be cut. If the length to be cut is longer, place it forward, otherwise place it backward.

[0021] (2) Precise centering

[0022] See attached Figure 1, by rotating the centering drive roller 11 to move the slab 8 left and right, the size value of the centering ruler 6 changes. When the data L4 displayed on the centering ruler 6 is close to the target value L3=(L1-L2) / 2 (±2mm), the three points A, B and the fixed cutting gun 5 form a straight line, and the AB line required for cutting is formed, that is, the longitudinal center line of the slab is absolutely parallel to the moving center lines of the two cutting guns. The precise centering function is completed

[0023] (3) Billet width setting

[0024] After the ingot is accurately aligned, points A and B and the fixed cutting gun 5 form a cutting line AB. Then, the center distance between the mobile water-cooled cutting gun 14 and the fixed water-cooled cutting gun 5 is adjusted by moving the cutting trolley 15. The digital scale width is infinitely close to L2 (±2mm). That is to say, when the center distance between the mobile water-cooled cutting gun 14 and the fixed water-cooled cutting gun 5 = L2 (±2mm), points D and F form a three-point line with the mobile water-cooled cutting gun 14, and the DF cutting line is formed, and the width setting of the ingot is completed.

[0025] (4) Start the cutting process

[0026] Manually move the cutting trolley to the end of the wide section of the ingot. After precise centering, adjust the mobile water-cooled flame cutting machine trolley assembly 2, align the cutting guns 5 and 14 at points BF, and start the cutting button with one button. After automatic ignition, the two cutting guns are ignited to preheat the ingot. After the preheating set time is reached, the cutting oxygen solenoid valve opens automatically and the trolley drive device 3 automatically starts to move and enters the normal cutting state. After observation is normal, adjust the movable limit stop 10 and set the stop cutting end position. After the excess part of the ingot is cut off due to the width adjustment, the proximity switch limit 14 is triggered by the movable limit stop 10 to stop cutting, and the cutting process is completed.

Claims

1. A continuous casting machine width-adjustable slab hot cutting machine, characterized in that: The invention comprises a track (1), a water-cooled flame cutting machine carriage assembly (2), a carriage driving device (3), a fixed cutting carriage (4), a fixed water-cooled cutting gun (5), a centering positioning scale (6), a centering positioning reference column (7), a water-cooled centering support roller (9), a movable limit stopper (10), a water-cooled centering drive roller (11), a proximity switch limiter 1 (12), a digital fixed width scale (13), a mobile water-cooled cutting gun (14), a mobile cutting carriage (15), a proximity switch limiter 2 (16), a fixed limit stopper The track (1) comprises two parallel steel rails, a centering and positioning scale (6) is fixed on one steel rail, the movable iron blocking slideway (19) is arranged in parallel on the outside of the other steel rail, the movable limit stop iron (10) and the fixed limit stop iron (18) are respectively arranged on the movable iron blocking slideway (19); the centering and positioning reference column (7), the water-cooled centering support roller (9) and the water-cooled centering drive roller (11) are respectively arranged between the two steel rails, and the water-cooled centering drive roller (11) is connected to the centering and positioning reference column (7), the water-cooled centering support roller (9) and the water-cooled centering drive roller (11) The rail (1) is parallel to the water-cooled centering support roller (9) and is perpendicular to the rail (1). The centering positioning reference column (7) is close to the water-cooled centering support roller (9). The water-cooled flame cutting machine trolley assembly (2) is arranged on the rail (1). The trolley drive device (3) is drivingly connected to the water-cooled flame cutting machine trolley assembly (2). The water-cooled flame cutting machine trolley assembly (2) has a trolley travel track (20) arranged perpendicular to the rail (1). The fixed cutting trolley (4) and the mobile cutting trolley (15) are respectively arranged on the trolley travel track. On the track (20), the fixed cutting trolley (4) and the mobile cutting trolley (15) are respectively provided with a fixed water-cooled cutting gun (5) and a mobile water-cooled cutting gun (14); a side of the water-cooled flame cutting machine trolley assembly (2) close to the mobile iron stop slideway (19) is provided with a proximity switch limiter 1 (12), a digital fixed width scale (13) and a proximity switch limiter 2 (16); the centering positioning scale (6) is arranged vertically with the track (1); and the water-cooled centering drive roller (11) is drivingly connected to the centering drive assembly device (17).

Images