Titanium alloy bar production line

Abstract

The invention provides a titanium alloy bar production line, and belongs to the technical field of metal processing, the titanium alloy bar production line 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 invention belongs to the technical field of metal processing, and in particular relates to a titanium alloy bar production line. Background Art

[0002] In the field of metal processing, the production of titanium alloy bars is a technology-intensive process. Due to its excellent properties such as high strength, low density, and corrosion resistance, it is widely used in a number of high-end manufacturing fields such as aerospace, medical equipment, and chemical equipment. However, the particularity of titanium alloy materials, such as easy oxidation at high temperatures, low thermal conductivity, and severe tendency to work hardening, puts extremely high demands on the configuration of the production line and process control.

[0003] In the traditional titanium alloy bar production line configuration, a blanking machine is usually used in conjunction with multiple sets of horizontal and vertical two-roll short stress rolling mills and subsequent three-roll sizing units. Although this layout can meet production needs to a certain extent, it has the following 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 the area occupied is large, which not only increases the construction and operation costs, but also limits the flexibility and scalability of the production line.

[0005] 2. Quality problems caused by large rolling mill spacing: Due to the large rolling mill spacing, the intermediate billet is easily affected by air cooling and friction during the transmission process, resulting in defects such as fish scales on the surface. At the same time, long-distance transmission will also increase the temperature loss of the bar, affecting the microstructure and mechanical properties of the titanium alloy.

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

[0007] 4. Instability of yield and quality: Due to the above problems, 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 scope of titanium alloy bars in high-end manufacturing fields.

[0008] Therefore, in response to the problems existing in traditional titanium alloy bar production lines, developing 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. Summary of the invention

[0009] In view of the above problems in the prior art, the present invention 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 invention, the technical solution adopted by the present invention is as follows: a titanium alloy bar production line is provided, which includes a blanking machine, multiple 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 sizing units include a first three-roller sizing unit, a second three-roller sizing unit and a third three-roller sizing unit; a roller table, a hot metal detector, a shearing device, a pinch roller and a heating device are arranged longitudinally in sequence between the discharge port of the blanking machine and the feed port of the first three-roller sizing unit;

[0012] A roller table, a shearing device and a roller table are arranged longitudinally 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, and 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, and 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 arranged at the discharge port of the third three-roller sizing unit. The discharge port of the third three-roller sizing unit is connected to the feed port of the receiving device through a roller table and a pinch roller.

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

[0019] Furthermore, the infrared diameter gauge is arranged 18m away from the discharge port of the third three-roller reducing and sizing unit, and a separation switch is arranged at the discharge port of the infrared diameter gauge; the material 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-size 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 present invention is as follows: the titanium alloy bar blank is initially formed after being heated and reciprocatingly rolled on a blanking machine, and then the head of the initially formed bar blank is removed by a shearing device. The hot metal detector detects the temperature of the initially formed bar blank online. 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 sizing unit by a pinch roller and a roller table for continuous rolling. After the first three-roller sizing unit is rolled, the bar blank is sent to the shearing device for head removal, and then The bar is then sent to the second three-roller reducing and sizing unit for continuous rolling. After the second three-roller reducing and sizing unit is rolled, the bar billet is sent to the shearing device for head removal and then sent to the third three-roller reducing and sizing unit. The third three-roller reducing and sizing unit is continuously rolled to form a bar rolled product. Finally, the infrared diameter gauge detects the product size of the bar rolled product. According to the specifications and lengths of the rolled products, the separation switch sorts the bar rolled products into the cooling bed or the wire laying machine. Before entering the cooling bed, the double-length flying shear equipment cuts the bar rolled products. After the finished straight bars and coils are cooled, they are bundled and collected.

[0022] The beneficial effects of the present invention are:

[0023] 1. The titanium alloy bar production line of the present invention abandons the multiple sets of horizontal and vertical two-roll short stress rolling mills in the traditional production line, and directly adopts three sets of three-roll sizing units to be continuously configured 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 sizing units are precisely calculated and reasonably set with compact structure, 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 sizing units have a small spacing between the rolling mills, and there is no need to set up a looper, 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 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 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 heat supplement 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-roller sizing unit is smaller, which is only 1 / 3 of the rolling width of the two-roller short stress rolling mill. The rolling process has a small width, a large rolling wrapping area, and the material deformation flows along the rolling direction. There will be no fish scale pattern on the surface of the bar. The three-way rolling makes the rolled piece evenly stressed. The influence of temperature factors is eliminated, and the crystallization of the internal and external structures of the material is denser.

[0026] 4. The three-roller sizing unit is suitable for various types of special materials. During online rolling, online adjustment becomes simpler, reducing the adjustment amount and the skill requirements of the adjuster, achieving full coverage of various product specifications. The infrared diameter gauge can continuously detect the finished product size online, quickly provide feedback information, and adjust at any time, which is of great significance to improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0028] Among them, 1. blank opening machine; 2. first three-roller sizing unit; 3. second three-roller sizing unit; 4. third three-roller sizing unit; 5. roller table; 6. shearing device; 7. pinch roller; 8. supplementary heating device; 9. infrared diameter gauge; 10. separation switch; 11. cooling bed; 12. laying machine; 13. double-length flying shear equipment. DETAILED DESCRIPTION

[0029] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0030] like Figure 1 As shown, the present invention 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 bent 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 groups of three-roller sizing units include a first three-roller sizing unit 2, a second three-roller sizing unit 3 and a third three-roller sizing unit 4; between the discharge port of the blanking machine 1 and the feed port of the first three-roller sizing unit 2, a roller 5, a hot metal detector, a shearing device 6, a pinch roller 7 and a 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, and 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 arranged 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 blanking machine 1 is a 380-type horizontal rolling mill unit, and an online electric induction heating furnace is provided on the blanking 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 sizing unit 2 and the second three-roller sizing unit 3 is 10 m; the linear distance between the second three-roller sizing unit 3 and the third three-roller sizing unit 4 is 10.5 m.

[0039] Furthermore, the infrared diameter gauge 9 is arranged 18m away from the discharge port of the third three-roller reducing and sizing unit 4, and a separation switch 10 is arranged at the discharge port of the infrared diameter gauge 9; the material 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 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 blank is initially formed after being heated and reciprocatingly rolled on the blanking machine 1, and then the head of the initially formed bar blank is removed by the shearing device 6. The hot metal detector detects the temperature of the initially formed bar blank online. If the temperature is lower than the rolling temperature, the bar blank is heated to the rolling temperature by the supplementary heating device 8, and then sent to the first three-roller sizing unit 2 by the pinch roller 7 and the roller table 5 for continuous rolling. After the first three-roller sizing unit 2 is rolled, the bar blank 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 blank 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 selects the bar rolled product to the cooling bed 11 or the laying head 12 according to the specifications and lengths of the rolled products. Before entering the cooling bed 11, the bar rolled product is sheared 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 groups of horizontal and vertical two-roll short stress rolling mills in the traditional production line, and directly adopts the blanking machine 1 and continuously configures three groups of three-roll sizing units. 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 groups of three-roll sizing units are precisely calculated and reasonably set to have a compact structure, 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 groups of three-roll sizing units have a small spacing between the rolling mills, and there is no need to set a looper, 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 billet, 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 ensure the temperature stability of the titanium alloy bar billet during the rolling process by adjusting the heating temperature of the heat supplement device 8 and controlling the speed of the pinch roller 7, thereby reducing the influence of temperature fluctuations on material properties, which is beneficial to improving the mechanical properties and surface quality of the finished product and meeting the rolling requirements of the titanium alloy with small thermal conductivity, small rolling temperature range and large deformation resistance.

[0044] The rolling width of the three-roller sizing unit in the titanium alloy bar production line is smaller, only 1 / 3 of the rolling width of the two-roller short stress rolling mill. The rolling process has a small width, a large rolling wrapping area, and the material deformation flows along the rolling direction. There will be no fish scales on the surface of the bar. The three-way rolling makes the rolled piece evenly stressed. The influence of temperature factors is eliminated, and the crystallization of the internal and external structures of the material is denser. The three-roller sizing unit is suitable for various types of special materials. When rolling online, online adjustment becomes simpler, reducing the adjustment amount and the skill requirements of the adjuster, achieving full coverage of various product specifications. The infrared diameter gauge 9 can continuously detect the finished product size online, quickly provide feedback information, and adjust at any time, which is of great significance to improving product quality.

Claims

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

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 arranged 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 supplementary 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 diameter gauge is arranged 18m away from the discharge port of the third three-roller reducing and sizing unit, and a separation switch is arranged at the discharge port of the infrared diameter gauge; the material 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 arranged between the discharge port of the separation switch and the feed port of the cooling bed.

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