CN103008341A - Titanium and titanium alloy bar hot continuous rolling production line and production process - Google Patents
Titanium and titanium alloy bar hot continuous rolling production line and production process Download PDFInfo
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- CN103008341A CN103008341A CN201210536345XA CN201210536345A CN103008341A CN 103008341 A CN103008341 A CN 103008341A CN 201210536345X A CN201210536345X A CN 201210536345XA CN 201210536345 A CN201210536345 A CN 201210536345A CN 103008341 A CN103008341 A CN 103008341A
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Abstract
The invention relates to a titanium and titanium alloy bar hot continuous rolling production line and a production process. The titanium and titanium alloy bar hot continuous rolling production line consists of a heating furnace, a transverse two-roll rough rolling unit, a high-rigidity short-stress-line longitudinal two-roll intermediate rolling unit, a high-rigidity short-stress-line longitudinal two-roll finish rolling unit and a small bar cooling bed. A low-speed continuous rolling process is adopted to reduce deformation heat produced by deformation resistance during rolling, guarantee the internal structure and the properties of rolled pieces and directly produce qualified bars. The titanium and titanium alloy bar hot continuous rolling production line can be used for rolling titanium and titanium alloy bars with specifications from phi 12mm to phi 140mm, the production of high-precision and heavy-piece-weight titanium and titanium alloy bars is realized, the production efficiency is high and the production cost is low.
Description
Technical field
The invention belongs to the titanium and its alloy work technical field, be specifically related to a kind of titanium or titanium alloy During Hot Bar Rolling production line and production technology.
Background technology
Titanium or titanium alloy is because its unique atomic structure and texture structure, belong to difficult distortion, difficult-to-machine metal, prior art generally adopts the many fire time heating rolling titanium or titanium alloy bars of segmented, but be difficult for to realize large substance (general bar substance only 5～50Kg), and poor dimensional precision, production efficiency is low.Because the thermal conductivity of titanium or titanium alloy is special poor, the distortion heat of the large generation of resistance of deformation when rolling is difficult for spreading out of, particularly when rolling high-strength, high-temperature titanium alloy, overheated structure very easily appears in metal inside, cause rolled piece to be prone to and organize overheated, non-uniform phenomenon, can't guarantee rolled piece interior tissue and performance, be difficult to obtain qualified bar.
Summary of the invention
The technical problem that the present invention solves: a kind of titanium or titanium alloy During Hot Bar Rolling production line and production technology are provided, have realized the continuous rolling of titanium or titanium alloy bar, and guaranteed rolled piece interior tissue and performance, directly produce qualified bar.
Technical solution of the present invention: a kind of titanium or titanium alloy During Hot Bar Rolling production line is comprised of the heating furnace, cross-arranging type two roller roughing units, high rigidity short-stress path lap siding two roller intermediate mills, high rigidity short-stress path lap siding two roller pre-finishing mill groups and the little Bar Cooling Bed that vertically connect successively; Described heating furnace discharging opening is connected with cross-arranging type two roller roughing unit charging apertures by the rollgang I, cross-arranging type two roller roughing units the first discharging opening is connected with high rigidity short-stress path lap siding two roller intermediate mill charging apertures by the rollgang II, and is provided with crop shears between rollgang II end and the high rigidity short-stress path lap siding two roller intermediate mill charging apertures; Be provided with the flying shear I between described high rigidity short-stress path lap siding two roller intermediate mill discharging openings and the high rigidity short-stress path lap siding two roller pre-finishing mill group charging apertures; Be provided with the flying shear II between described high rigidity short-stress path lap siding two roller pre-finishing mill group discharging openings and the little Bar Cooling Bed.
Described cross-arranging type two roller roughing units the second discharging opening is connected with the straightener charging aperture by the rollgang III, and the straightener discharging opening is connected with big rod cooling bed.
A kind of titanium or titanium alloy During Hot Bar Rolling production technology comprises following processing step:
Step 1: with φ 100～φ 200mm titanium or titanium alloy circular blank 800 ℃～1050 ℃ homogeneous heatings 80～150 minutes;
Step 2: adopt cross-arranging type two roller roughing units to be rolled into φ 50～φ 140mm rod base with the speed of≤3 meter per seconds the circular blank after step 1 heating;
Step 3: the excellent base after step 2 processing is sent into high rigidity short-stress path lap siding two roller intermediate mills after with the crop shears crop become the excellent base of φ 20～φ 80mm with the speed continuous rolling of≤6 meter per seconds;
Step 4: the excellent base after step 3 processing is sent into high rigidity short-stress path lap siding two roller pre-finishing mill groups after with flying shear crop, tail become φ 12～φ 40mm bar with the speed continuous rolling of≤12 meter per seconds;
Step 5: the rolling good bar of step 4 is collected by little Bar Cooling Bed after flying shear is cut scale.
The rolling pass of described step 2 is the 8-12 passage, and mill speed is the 2-3 meter per second; The rolling pass of described step 3 is the 5-7 passage, and mill speed is the 2.5-5 meter per second; The rolling pass of described step 4 is the 5-7 passage, and mill speed is the 6-12 meter per second.
The advantage that the present invention compared with prior art has and effect:
1, the present invention vertically connects to form titanium or titanium alloy bar axial rolling production line successively with heating furnace, cross-arranging type two roller roughing units, high rigidity short-stress path lap siding two roller intermediate mills and high rigidity short-stress path lap siding two roller pre-finishing mill groups, and employing low speed technique for continuous rolling, reduce the distortion heat that resistance of deformation produces when rolling, guarantee rolled piece interior tissue and performance, directly produce qualified bar.
2, the present invention can all specification titanium or titanium alloy bars of rolling φ 12～φ 140mm, realize the production of high accuracy, large substance titanium or titanium alloy bar, and production efficiency are high, and production cost is low.
Description of drawings
Fig. 1 is schematic layout pattern of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing 1 embodiments of the invention are described.
Titanium or titanium alloy During Hot Bar Rolling production line is comprised of the heating furnace 1, cross-arranging type two roller roughing units 2, high rigidity short-stress path lap siding two roller intermediate mills 4, high rigidity short-stress path lap siding two roller pre-finishing mill groups 6 and the little Bar Cooling Bed 8 that vertically connect successively; Described heating furnace 1 discharging opening is connected with cross-arranging type two roller roughing units 2 charging apertures by rollgang I 9, cross-arranging type two roller roughing units 2 first discharging openings are connected with high rigidity short-stress path lap siding two roller intermediate mills 4 charging apertures by rollgang II 10, and are provided with crop shears 3 between rollgang II 10 ends and high rigidity short-stress path lap siding two roller intermediate mills 4 charging apertures; Be provided with flying shear I 5 between described high rigidity short-stress path lap siding two roller intermediate mills, 4 discharging openings and high rigidity short-stress path lap siding two roller pre-finishing mill groups 6 charging apertures; Be provided with flying shear II 7 between described high rigidity short-stress path lap siding two roller pre-finishing mill group 6 discharging openings and the little Bar Cooling Bed 8.
Described cross-arranging type two roller roughing units 2 second discharging openings are connected with straightener 12 charging apertures by rollgang III 11, and straightener 12 discharging openings are connected with big rod cooling bed 13.But Direct Rolling titanium or titanium alloy big rod, its production technology is same as the prior art.
φ 14mmTC4 titanium alloy rod bar hot continuous rolling production technology: at first φ 150mmTC4 titanium alloy circular blank is adopted stepping-bottom-type heating furnace 1 at 900 ℃～1020 ℃ homogeneous heatings after 80～150 minutes, send into cross-arranging type two roller roughing units 2 by rollgang I 9 and be rolled into φ 70～φ 75mmTC4 titanium alloy bar base with the speed of 2.3 meter per seconds through 9 passages; Then after being delivered to crop shears 3 crops by rollgang II 10, enter high rigidity short-stress path lap siding two roller intermediate mills 4 and be rolled into φ 27～φ 31mmTC4 titanium alloy bar base with the speed of 2.7 meter per seconds through 6 passages, behind flying shear I 5 crops, tail, enter high rigidity short-stress path lap siding two roller pre-finishing mill groups 6 and be rolled into φ 14mmTC4 titanium alloy rod bar with the speed of 10 meter per seconds through 6 passages, after flying shear II 7 is cut scale, collected by little Bar Cooling Bed 8.
φ 12mmTA2 pure titanium rod material hot continuous rolling production technology: at first the pure titanium circular blank of φ 150mmTA2 is adopted stepping-bottom-type heating furnace 1 at 800 ℃～850 ℃ homogeneous heatings after 80～120 minutes, send into cross-arranging type two roller roughing units 2 by rollgang I 9 and be rolled into φ 50～φ 55mmTA2 pure titanium rod base with the speed of 2.3 meter per seconds through 11 passages; Then after being delivered to crop shears 3 crops by rollgang II 10, enter high rigidity short-stress path lap siding two roller intermediate mills 4 and be rolled into φ 20～φ 22mmTA2 pure titanium rod material with the speed of 3 meter per seconds through 6 passages, behind flying shear I 5 crops, tail, enter high rigidity short-stress path lap siding two roller pre-finishing mill groups 6 and be rolled into φ 12mmTA2 pure titanium rod material with the speed of 9 meter per seconds through 6 passages, after flying shear II 7 is cut scale, collected by little Bar Cooling Bed 8.
Above-described embodiment is preferred embodiment of the present invention, is not to limit the scope of the present invention, therefore all equivalent variations of being done with the described content of claim of the present invention all should be included within the claim scope of the present invention.
Claims (4)
1. titanium or titanium alloy During Hot Bar Rolling production line is characterized in that: described production line is comprised of the heating furnace (1), cross-arranging type two roller roughing units (2), high rigidity short-stress path lap siding two roller intermediate mills (4), high rigidity short-stress path lap siding two roller pre-finishing mill groups (6) and the little Bar Cooling Bed (8) that vertically connect successively; Described heating furnace (1) discharging opening is connected with cross-arranging type two roller roughing unit (2) charging apertures by rollgang I (9), cross-arranging type two roller roughing units (2) first discharging openings are connected with high rigidity short-stress path lap siding two roller intermediate mill (4) charging apertures by rollgang II (10), and are provided with crop shears (3) between rollgang II (10) end and high rigidity short-stress path lap siding two roller intermediate mill (4) charging apertures; Be provided with flying shear I (5) between described high rigidity short-stress path lap siding two roller intermediate mill (4) discharging openings and high rigidity short-stress path lap siding two roller pre-finishing mill group (6) charging apertures; Be provided with flying shear II (7) between described high rigidity short-stress path lap siding two roller pre-finishing mill group (6) discharging openings and the little Bar Cooling Bed (8).
2. titanium or titanium alloy During Hot Bar Rolling production line according to claim 1, it is characterized in that: described cross-arranging type two roller roughing units (2) second discharging openings are connected with straightener (12) charging aperture by rollgang III (11), and straightener (12) discharging opening is connected with big rod cooling bed (13).
3. titanium or titanium alloy During Hot Bar Rolling production technology is characterized in that comprising following processing step:
Step 1: with φ 100～φ 200mm titanium or titanium alloy circular blank 800 ℃～1050 ℃ homogeneous heatings 80～150 minutes;
Step 2: adopt cross-arranging type two roller roughing units to be rolled into φ 50～φ 140mm rod base with the speed of≤3 meter per seconds the circular blank after step 1 heating;
Step 3: the excellent base after step 2 processing is sent into high rigidity short-stress path lap siding two roller intermediate mills after with the crop shears crop become the excellent base of φ 20～φ 80mm with the speed continuous rolling of≤6 meter per seconds;
Step 4: the excellent base after step 3 processing is sent into high rigidity short-stress path lap siding two roller pre-finishing mill groups after with flying shear crop, tail become φ 12～φ 40mm bar with the speed continuous rolling of≤12 meter per seconds;
Step 5: the rolling good bar of step 4 is collected by little Bar Cooling Bed after flying shear is cut scale.
4. a kind of titanium or titanium alloy During Hot Bar Rolling production technology according to claim 3, it is characterized in that: the rolling pass of described step 2 is the 8-12 passage, mill speed is the 2-3 meter per second; The rolling pass of described step 3 is the 5-7 passage, and mill speed is the 2.5-5 meter per second; The rolling pass of described step 4 is the 5-7 passage, and mill speed is the 6-12 meter per second.
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| CN201210536345XA CN103008341A (en) | 2012-12-12 | 2012-12-12 | Titanium and titanium alloy bar hot continuous rolling production line and production process |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104923562A (en) * | 2015-07-08 | 2015-09-23 | 南京工业大学 | Low-cost continuous rolling technology and equipment for titanium and titanium alloy |
| CN105710127A (en) * | 2016-03-17 | 2016-06-29 | 武钢集团昆明钢铁股份有限公司 | Method for producing industrial pure titanium rod by semi-continuous rolling |
| CN105798060A (en) * | 2016-03-17 | 2016-07-27 | 武钢集团昆明钢铁股份有限公司 | Method for producing titanium alloy bar through semi-tandem rolling |
| CN114393052A (en) * | 2022-01-13 | 2022-04-26 | 陕西华陆金钛工业有限公司 | Production method of L-shaped inequilateral titanium alloy profile |
| CN114405992A (en) * | 2022-01-24 | 2022-04-29 | 中冶赛迪工程技术股份有限公司 | Production method and system for controlling shade and sun surfaces of double high-speed bars |
| CN118122770A (en) * | 2024-05-08 | 2024-06-04 | 西安威科多机电设备有限公司 | Titanium and titanium alloy rod and wire composite production process and production line |
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| JPH09295008A (en) * | 1996-04-26 | 1997-11-18 | Nippon Steel Corp | Hot rolling method of pure titanium wire |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104923562A (en) * | 2015-07-08 | 2015-09-23 | 南京工业大学 | Low-cost continuous rolling technology and equipment for titanium and titanium alloy |
| CN105710127A (en) * | 2016-03-17 | 2016-06-29 | 武钢集团昆明钢铁股份有限公司 | Method for producing industrial pure titanium rod by semi-continuous rolling |
| CN105798060A (en) * | 2016-03-17 | 2016-07-27 | 武钢集团昆明钢铁股份有限公司 | Method for producing titanium alloy bar through semi-tandem rolling |
| CN105710127B (en) * | 2016-03-17 | 2018-02-16 | 武钢集团昆明钢铁股份有限公司 | A kind of method of semi-tandem rolling production industrially pure titanium bar |
| CN114393052A (en) * | 2022-01-13 | 2022-04-26 | 陕西华陆金钛工业有限公司 | Production method of L-shaped inequilateral titanium alloy profile |
| CN114393052B (en) * | 2022-01-13 | 2023-12-01 | 陕西华陆金钛工业有限公司 | Production method of L-shaped unequal-edge titanium alloy section bar |
| CN114405992A (en) * | 2022-01-24 | 2022-04-29 | 中冶赛迪工程技术股份有限公司 | Production method and system for controlling shade and sun surfaces of double high-speed bars |
| CN114405992B (en) * | 2022-01-24 | 2023-11-28 | 中冶赛迪工程技术股份有限公司 | Production method and system for controlling double high-speed bar sunny and shady surfaces |
| CN118122770A (en) * | 2024-05-08 | 2024-06-04 | 西安威科多机电设备有限公司 | Titanium and titanium alloy rod and wire composite production process and production line |
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Application publication date: 20130403 |