Titanium alloy bar production line

Abstract

The utility model provides a titanium alloy bar production line, which belongs to the technical field of metal processing, and comprises a cogging mill, a plurality of groups of three-roller reducing and sizing units, a plurality of roller ways, a plurality of shearing devices, a plurality of pinch rollers, a plurality of hot metal detectors, a heat compensation device and a material receiving device, according to the titanium alloy bar production line, three groups of three-roller reducing and sizing units are continuously configured after the cogging mill is directly adopted, so that the length of the production line is greatly shortened, the occupied area is reduced, and the land cost of construction and operation is reduced; and the three groups of three-roller reducing and sizing units are accurately calculated and the distances are reasonably set, so that the stability of the bars in the rolling process is ensured, the problems of temperature loss and surface quality caused by long-distance transmission are reduced, a loop does not need to be arranged, and the pass tension control is easier to carry out. The design of the three-roller reducing and sizing unit can effectively control the shape and size precision of the rod, reduce the uneven deformation of the intermediate blank, and further improve the quality of the finished product.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal processing, in particular to a titanium alloy bar production line. Background Art

[0002] In the metalworking industry, the production of titanium alloy bars is a technology-intensive process. Due to their excellent properties, such as high strength, low density, and corrosion resistance, they are widely used in a variety of high-end manufacturing fields, including aerospace, medical devices, and chemical equipment. However, the special characteristics of titanium alloys, such as their susceptibility to oxidation at high temperatures, low thermal conductivity, and severe tendency to work hardening, place extremely high demands on production line configuration and process control.

[0003] In the traditional titanium alloy bar production line configuration, a blanking mill is usually used in conjunction with multiple sets of horizontal and vertical two-roll short stress rolling mills and subsequent three-roll sizing and reducing mills. Although this layout can meet production needs to a certain extent, it has significant shortcomings:

[0004] 1. The production line is too long and occupies a large area: The length of the traditional titanium alloy bar production line is often more than 100 meters, and it occupies a large area, which not only increases the construction and operation costs, but also limits the flexibility and scalability of the production line.

[0005] 2. Quality issues caused by large mill spacing: Due to the large mill spacing, the intermediate billet is susceptible to air cooling and friction during transportation, resulting in surface defects such as fish scales. Furthermore, long-distance transportation increases the bar's temperature loss, affecting the microstructure and mechanical properties of the titanium alloy.

[0006] 3. Complexity of the looper system: To ensure production continuity, traditional production lines require complex looper systems between rolling mills. These systems not only increase the complexity and maintenance costs of the production line, but may also malfunction during operation, affecting production efficiency and product quality.

[0007] 4. Unstable yield and quality: Due to the above issues, the yield and quality of traditional titanium alloy bar production lines often fluctuate greatly. This not only increases production costs but also limits the application of titanium alloy bars in high-end manufacturing.

[0008] Therefore, in response to the problems existing in traditional titanium alloy bar production lines, the development of a compact and efficient titanium alloy bar production line to improve production efficiency, reduce costs, and improve product quality and stability has become a technical problem that needs to be urgently solved in the current metal processing field. Utility Model Content

[0009] In response to the above-mentioned problems in the prior art, the utility model aims to provide a titanium alloy bar production line, the core of which is to optimize the rolling mill configuration to solve the problems of traditional titanium alloy bar production lines such as long production lines, large floor space, and unstable yield and quality.

[0010] In order to achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model is as follows: a titanium alloy bar production line is provided, which includes a blanking machine, multiple groups of three-roller reducing and sizing units, multiple rollers, multiple shearing devices, multiple pinch rollers, multiple hot metal detectors, a heating device and a material receiving device.

[0011] The plurality of three-roller reducing and sizing units include a first three-roller reducing and sizing unit, a second three-roller reducing and sizing unit, and a third three-roller reducing and sizing unit; a roller table, a hot metal detector, a shearing device, a pinch roller, and a supplementary heating device are longitudinally arranged in sequence between the discharge port of the cogging machine and the feed port of the first three-roller reducing and sizing unit;

[0012] A roller table, a shearing device and a roller table are longitudinally arranged in sequence between the discharge port of the first three-roller reducing and sizing unit and the feed port of the second three-roller reducing and sizing unit. A hot metal detector is provided at the discharge port of the first three-roller reducing and sizing unit and the feed port of the second three-roller reducing and sizing unit.

[0013] A roller table, a shearing device and a roller table are arranged longitudinally in sequence between the discharge port of the second three-roller reducing and sizing unit and the feed port of the third three-roller reducing and sizing unit. A hot metal detector is provided at the discharge port of the second three-roller reducing and sizing unit and the feed port of the third three-roller reducing and sizing unit.

[0014] A hot metal detector and an infrared diameter gauge are provided at the discharge port of the third three-roller reducing and sizing unit. The discharge port of the third three-roller reducing and sizing unit is connected to the feed port of the receiving device through a roller table and pinch rollers.

[0015] Furthermore, the blanking machine is a 380-type horizontal rolling mill unit, and an online electric induction heating furnace is provided on the blanking machine. The heating temperature of the online electric induction heating furnace is 850°C-930°C.

[0016] Furthermore, each of the shearing devices is a flying shear processing equipment.

[0017] Furthermore, the supplementary heating device is an electric induction heating furnace, and the heating temperature of the electric induction heating furnace is 850°C-930°C.

[0018] Furthermore, the linear distance between the first three-roller sizing unit and the second three-roller sizing unit is 10m; the linear distance between the second three-roller sizing unit and the third three-roller sizing unit is 10.5m.

[0019] Furthermore, the infrared caliper is provided 18m away from the discharge port of the third three-roller reducing and sizing unit, and a separation switch is provided at the discharge port of the infrared caliper; the receiving device includes a cooling bed and a spinning machine, and the two discharge ports of the separation switch are respectively connected to the cooling bed and the spinning machine through rollers.

[0020] Furthermore, a multiple-length flying shear device and a pinch roller are provided between the discharge port of the separation switch and the feed port of the cooling bed.

[0021] The basic principle of a titanium alloy bar production line in the utility model is as follows: the titanium alloy bar blank is initially formed after being heated and reciprocatingly rolled on a blanking machine, and then a shearing device is used to remove the head of the initially formed bar blank. A hot metal detector performs online temperature detection on the initially formed bar blank. If the temperature is lower than the rolling temperature, the bar blank is heated to the rolling temperature by a supplementary heating device, and then sent to the first three-roller reducing and sizing unit by a pinch roller and a roller table for continuous rolling. After the first three-roller reducing and sizing unit completes rolling, the bar blank is sent to the shearing device for head removal. Then it is sent to the second three-roller reducing and sizing unit for continuous rolling. After the second three-roller reducing and sizing unit is completed, the bar billet is sent to the shearing device to remove the head and then sent to the third three-roller reducing and sizing unit. The third three-roller reducing and sizing unit is continuously rolled to finally form bar rolled products. Finally, the infrared diameter gauge is used to detect the product size of the bar rolled products. According to the specifications and lengths of the rolled products, the separated switch will sort the bar rolled products to the cooling bed or the laying head. Before entering the cooling bed, the double-length flying shear equipment will cut the bar rolled products. After the finished straight bars and coils are cooled, they are bundled and collected.

[0022] The beneficial effects of the utility model are:

[0023] 1. A titanium alloy bar production line in the present invention abandons the multiple sets of horizontal and vertical two-roll short-stress rolling mills in traditional production lines, and directly adopts three sets of three-roll reducing and sizing units in a row after the blanking machine. This configuration greatly shortens the length of the production line, reduces the floor space, and reduces the land cost of construction and operation. At the same time, the three sets of three-roll reducing and sizing units are reasonably set through precise calculations, and the structure is compact, which not only ensures the stability of the bars during the rolling process, but also reduces the temperature loss and surface quality problems caused by long-distance transmission. The three sets of three-roll reducing and sizing units have a small spacing between the rolling mills, and there is no need to set up a loop, which makes it easier to control the pass tension. The design of the three-roll reducing and sizing unit can effectively control the shape and dimensional accuracy of the bars, reduce the uneven deformation of the intermediate billet, and further improve the quality of the finished product.

[0024] 2. During the continuous rolling process of titanium alloy bar billets, multiple hot metal detectors are set up to realize real-time temperature detection of the titanium alloy bar billets, monitor the temperature of each node of the titanium alloy bar billets, and adjust the heating temperature of the heating device and control the speed of the pinch rollers to ensure the temperature stability of the titanium alloy bar billets during the rolling process, reduce the impact of temperature fluctuations on material properties, and help improve the mechanical properties and surface quality of the finished products, meeting the rolling requirements of titanium alloys with small thermal conductivity, small rolling temperature range, and large deformation resistance.

[0025] 3. The rolling width of the three-roll reducing and sizing mill is smaller, which is only 1 / 3 of the rolling width of the two-roll short stress rolling mill. The width is small during the rolling process, the rolling wrapping area is large, the material deformation flows along the rolling direction, and there will be no fish scale pattern on the surface of the bar. The three-directional rolling makes the rolled piece evenly stressed. Eliminating the influence of temperature factors, the internal and external structure of the material is more densely crystallized.

[0026] 4. The three-roller sizing unit is suitable for a wide range of special materials. During online rolling, online adjustments are simplified, reducing both the amount of adjustment and the skill requirements of the operator, enabling comprehensive coverage of a wide range of product specifications. The infrared diameter gauge continuously monitors finished product dimensions online, providing rapid feedback and enabling adjustments at any time, playing a significant role in improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural diagram of a titanium alloy bar production line.

[0028] Among them, 1. Cobbler; 2. First three-roller sizing unit; 3. Second three-roller sizing unit; 4. Third three-roller sizing unit; 5. Roller; 6. Shearing device; 7. Pinch roller; 8. Supplementary heating device; 9. Infrared diameter gauge; 10. Separator; 11. Cooling bed; 12. Laying machine; 13. Multiple-length flying shear equipment. DETAILED DESCRIPTION

[0029] The specific implementation methods of the present invention are described below to facilitate understanding of the present invention by those skilled in the art. However, it should be clear that the present invention is not limited to the scope of the specific implementation methods. For those skilled in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the appended claims, these changes are obvious, and all utility model creations using the concept of the present invention are protected.

[0030] like Figure 1 As shown, the utility model provides a titanium alloy bar production line, which includes a blanking machine 1, multiple three-roller reducing and sizing units, multiple rollers 5, multiple shearing devices 6, multiple pinch rollers 7, multiple hot metal detectors, a heating device 8 and a material receiving device.

[0031] exist Figure 1 In order to fully display all the components of a titanium alloy bar production line, the components of the titanium alloy bar production line are arranged in a curved manner. However, in the actual production line layout, all the components of the titanium alloy bar production line are arranged in a longitudinal straight line. Specifically, the multiple three-roller reducing and sizing units include a first three-roller reducing and sizing unit 2, a second three-roller reducing and sizing unit 3, and a third three-roller reducing and sizing unit 4; between the discharge port of the cogging machine 1 and the feed port of the first three-roller reducing and sizing unit 2, a roller 5, a hot metal detector, a shearing device 6, a pinch roller 7, and the supplementary heating device 8 are arranged longitudinally in sequence.

[0032] A roller table 5, a shearing device 6 and a roller table 5 are longitudinally arranged in sequence between the discharge port of the first three-roller reducing and sizing unit 2 and the feed port of the second three-roller reducing and sizing unit 3. A hot metal detector is provided at the discharge port of the first three-roller reducing and sizing unit 2 and the feed port of the second three-roller reducing and sizing unit 3.

[0033] A roller table 5, a shearing device 6 and a roller table 5 are longitudinally arranged in sequence between the discharge port of the second three-roller reducing and sizing unit 3 and the feed port of the third three-roller reducing and sizing unit 4. A hot metal detector is provided at the discharge port of the second three-roller reducing and sizing unit 3 and the feed port of the third three-roller reducing and sizing unit 4.

[0034] A hot metal detector and an infrared diameter gauge 9 are provided at the discharge port of the third three-roller reducing and sizing unit 4. The discharge port of the third three-roller reducing and sizing unit 4 is connected to the feed port of the receiving device through a roller table 5 and a pinch roller 7.

[0035] Furthermore, the slab opening machine 1 is a 380-type horizontal rolling mill unit, and an online electric induction heating furnace is provided on the slab opening machine 1. The heating temperature of the online electric induction heating furnace is 850°C-930°C.

[0036] Furthermore, each of the shearing devices 6 is a flying shear processing equipment.

[0037] Furthermore, the supplementary heat device 8 is an electric induction heating furnace, and the heating temperature of the electric induction heating furnace is 850°C-930°C.

[0038] Furthermore, the linear distance between the first three-roller reducing and sizing unit 2 and the second three-roller reducing and sizing unit 3 is 10m; the linear distance between the second three-roller reducing and sizing unit 3 and the third three-roller reducing and sizing unit 4 is 10.5m.

[0039] Furthermore, the infrared diameter gauge 9 is provided 18m away from the discharge port of the third three-roller reducing and sizing unit 4, and a separation switch 10 is provided at the discharge port of the infrared diameter gauge 9; the receiving device includes a cooling bed 11 and a spinning machine 12, and the two discharge ports of the separation switch 10 are respectively connected to the cooling bed 11 and the spinning machine 12 through a roller conveyor 5.

[0040] Furthermore, a multiple-length flying shear device 13 and a pinch roller 7 are provided between the discharge port of the separation switch 10 and the feed port of the cooling bed 11 .

[0041] The operation process of the titanium alloy bar production line is as follows: the titanium alloy bar billet is initially formed after being heated and reciprocatingly rolled on the billet opening machine 1, and then the head of the initially formed bar billet is removed by the shearing device 6. The hot metal detector detects the temperature of the initially formed bar billet online. If the temperature is lower than the rolling temperature, the bar billet is heated to the rolling temperature by the supplementary heating device 8, and then sent to the first three-roller reducing and sizing unit 2 by the pinch roller 7 and the roller table 5 for continuous rolling. After the first three-roller reducing and sizing unit 2 is rolled, the bar billet is sent to the shearing device 6 to remove the head, and then sent to the second three-roller The sizing unit 3 performs continuous rolling. After the second three-roller sizing unit 3 completes rolling, the bar billet is sent to the shearing device 6 for head removal and then sent to the third three-roller sizing unit 4. The third three-roller sizing unit 4 performs continuous rolling to form a bar rolled product. Finally, the infrared diameter gauge 9 detects the product size of the bar rolled product. The separation switch 10 sorts the bar rolled product into the cooling bed 11 or the laying head 12 according to the specifications and length of the rolled product. Before entering the cooling bed 11, the bar rolled product is cut by the double-length flying shear device 13. After the finished straight bars and coils are cooled, they are bundled and collected.

[0042] A titanium alloy bar production line in the present invention abandons the multiple sets of horizontal and vertical two-roll short stress rolling mills in traditional production lines, and directly adopts a blanking machine 1 followed by a continuous configuration of three sets of three-roll sizing units. This configuration significantly shortens the length of the production line, reduces the floor space, and reduces the land cost of construction and operation. At the same time, the three sets of three-roll sizing units are precisely calculated and reasonably set in spacing, and the compact structure not only ensures the stability of the bars during the rolling process, but also reduces the temperature loss and surface quality problems caused by long-distance transmission. The three sets of three-roll sizing units have a small spacing between the rolling mills, and there is no need to set up a loop, which makes it easier to control the pass tension. The design of the three-roll sizing unit can effectively control the shape and dimensional accuracy of the bars, reduce the uneven deformation of the intermediate billets, and further improve the quality of the finished product.

[0043] During the continuous rolling process of the titanium alloy bar billet, a plurality of hot metal detectors are set to realize real-time temperature detection of the titanium alloy bar billet, monitor the temperature of each node of the titanium alloy bar billet, and adjust the heating temperature of the heat supplement device 8 and control the speed of the pinch roller 7 to ensure the temperature stability of the titanium alloy bar billet during the rolling process, reduce the influence of temperature fluctuations on material properties, and help improve the mechanical properties and surface quality of the finished product, meeting the rolling requirements of titanium alloy with small thermal conductivity, small rolling temperature range and large deformation resistance.

[0044] The three-roll reducing and sizing mill in the titanium alloy bar production line achieves a smaller rolling width, only one-third of the rolling width of a two-roll short-stress mill. This minimizes the rolling process width, increases the rolling envelope, and allows material deformation to flow along the rolling direction, eliminating the appearance of fish-scale patterns on the bar surface. Three-way rolling ensures uniform stress distribution on the rolled piece, eliminating the influence of temperature, resulting in a denser internal and external microstructure. The three-roll reducing and sizing mill is suitable for a wide range of special materials and allows for simpler online adjustments during rolling. This reduces both the amount of adjustment and the skill requirements of the adjuster, enabling comprehensive coverage of a wide range of product specifications. The infrared diameter gauge 9 continuously monitors finished product dimensions online, providing rapid feedback and enabling adjustments at any time, which is crucial for improving product quality.

Claims

1. A titanium alloy bar production line, characterized in that: It includes a blanking machine, multiple three-roller reducing and sizing units, multiple roller tables, multiple shearing devices, multiple pinch rollers, multiple hot metal detectors, a heating device and a material receiving device; The plurality of three-roller reducing and sizing units include a first three-roller reducing and sizing unit, a second three-roller reducing and sizing unit, and a third three-roller reducing and sizing unit; a roller table, a hot metal detector, a shearing device, a pinch roller, and a supplementary heating device are longitudinally arranged in sequence between the discharge port of the cogging machine and the feed port of the first three-roller reducing and sizing unit; A roller table, a shearing device and a roller table are longitudinally arranged in sequence between the discharge port of the first three-roller reducing and sizing unit and the feed port of the second three-roller reducing and sizing unit. A hot metal detector is provided at the discharge port of the first three-roller reducing and sizing unit and the feed port of the second three-roller reducing and sizing unit. A roller table, a shearing device and a roller table are arranged longitudinally in sequence between the discharge port of the second three-roller reducing and sizing unit and the feed port of the third three-roller reducing and sizing unit. A hot metal detector is provided at the discharge port of the second three-roller reducing and sizing unit and the feed port of the third three-roller reducing and sizing unit. A hot metal detector and an infrared diameter gauge are provided at the discharge port of the third three-roller reducing and sizing unit. The discharge port of the third three-roller reducing and sizing unit is connected to the feed port of the receiving device through a roller table and pinch rollers.

2. The titanium alloy bar production line according to claim 1, characterized in that: The blanking machine is a 380-type horizontal rolling mill unit, and an online electric induction heating furnace is provided on the blanking machine. The heating temperature of the online electric induction heating furnace is 850°C-930°C.

3. The titanium alloy bar production line according to claim 1, characterized in that: Each of the shearing devices is a flying shear processing equipment.

4. The titanium alloy bar production line according to claim 1, characterized in that: The heating device is an electric induction heating furnace, and the heating temperature of the electric induction heating furnace is 850°C-930°C.

5. The titanium alloy bar production line according to claim 1, characterized in that: The linear distance between the first three-roller sizing unit and the second three-roller sizing unit is 10m; the linear distance between the second three-roller sizing unit and the third three-roller sizing unit is 10.5m.

6. The titanium alloy bar production line according to claim 1, characterized in that: The infrared caliper is arranged 18m away from the discharge port of the third three-roller reducing and sizing unit, and a separation switch is provided at the discharge port of the infrared caliper; the receiving device includes a cooling bed and a spinning machine, and the two discharge ports of the separation switch are respectively connected to the cooling bed and the spinning machine through rollers.

7. The titanium alloy bar production line according to claim 6, characterized in that: A multiple-length flying shear device and a pinch roller are provided between the discharge port of the separation switch and the feed port of the cooling bed.

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