CN105710127A - Method for producing industrial pure titanium rod by semi-continuous rolling - Google Patents
Method for producing industrial pure titanium rod by semi-continuous rolling Download PDFInfo
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- CN105710127A CN105710127A CN201610151796.XA CN201610151796A CN105710127A CN 105710127 A CN105710127 A CN 105710127A CN 201610151796 A CN201610151796 A CN 201610151796A CN 105710127 A CN105710127 A CN 105710127A
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- pure titanium
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- bar
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
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Abstract
The invention discloses a method for producing an industrial pure titanium rod by semi-continuous rolling. The method comprises the following steps: feeding industrial pure titanium blank into a resistance type heating furnace to carry out sectional heating; then, feeding the industrial pure titanium blank into a rough mill to roll; feeding industrial pure titanium blank into a rolling mill to roll; and cooling a rolled part after rolling to obtain a rod finished product. According to the method, an electric furnace is adopted to carry out sectional type heating on industrial pure titanium blank, so that heating uniformity of the blank is effectively improved, and the performance uniformity and stability of the finished product are facilitated. The method can meet the small-batch multi-specification needs of a titanium product, and the final product can be the industrial pure titanium rod with a square or circular section, so that the product is more diversified, and the technological adaptability is strong.
Description
Technical field
The invention belongs to metal material processing and field shaping technique, be specifically related to a kind of method that semi-tandem rolling produces industrially pure titanium bar.
Background technology
Titanium or titanium alloy, due to the decay resistance of its excellence and the characteristic such as high specific strength, strong human body affinity, is widely used in the fields such as Aero-Space, automobile, tool connection, medical treatment.
The shortcomings such as the traditional method of titanium or titanium alloy bar production is generally forging or swages, but two kinds of methods are both needed to heating for multiple times, have energy consumption height, and labor intensity is big, and production efficiency is low, and product size fluctuation is big, type quality difference.In recent years the method also occurring utilizing hot rolling to produce titanium or titanium alloy rod, wire rod.Patent CN101152653A and CN101085451 individually discloses the method rolling titanium or titanium alloy Bar Wire Product without torsion tandem mill by three-roller Y shaped tandem mill and three-high mill two roller tandem mill, two kinds of methods are both needed to once heat, and carry out continuous way production, product substance reaches 50～100kg, compared to traditional forging or swage, product has had obvious raising in energy consumption, production efficiency and workpiece measurement precision.
Along with going deep into of titanium or titanium alloy production Technology research, patent CN104148382A discloses a kind of method being adapted on special steel wire and rod hot tandem and producing titanium or titanium alloy bar, the method adopts gas heating furnace heating titanium or titanium alloy forging square billet, be then passed through thick-in roll after obtain the pole material of φ 16 ~ φ 100mm.Patent CN103008341A discloses a kind of titanium or titanium alloy bar axial rolling production line being made up of heating furnace, cross-arranging type two roller roughing mill, high rigidity short-stress path lap siding two roller intermediate mill, high rigidity short-stress path lap siding two roller pre-finishing mill group and little Bar Cooling Bed and obtains the production technology of φ 12 ~ φ 140mm titanium or titanium alloy bar.Two kinds of methods are all greatly improved in product substance, surface quality, production efficiency etc., but product is pole material, and performance is uniform and stable not, and is complete the corresponding operation of rolling on specific production line, and Technological adaptability is not enough.
Summary of the invention
It is an object of the invention to provide and a kind of make being heated evenly of blank, end properties is uniform and stable, it is possible to meet the method that the semi-tandem rolling mode of the requirement of the titanium material many specifications of product small lot produces industrially pure titanium bar.
The object of the present invention is achieved like this, comprises the following steps:
A, by industrially pure titanium base send into resistance-type heating furnace, adopt zone heating mode to be heated, first by furnace temperature from room temperature to 400 DEG C ~ 500 DEG C, be incubated 40 ~ 70min, then proceed to be warming up to 820 DEG C ~ 920 DEG C and carry out soaking insulation, soaking insulation 50 ~ 100min after temperature；
B, by through processing of step A titanium base send into roughing mill roll, rolling starting temperature be 750 DEG C ~ 850 DEG C, roll 4 ~ 7 passages, obtain roughing part；
C, by step B roll after bar send into finishing mill roll, rolling starting temperature be 680 ~ 780 DEG C, roll 4 ~ 11 passages, obtain finish rolling part；
D, rolled after, by rolled piece cool down, obtain industrially pure titanium rod product.
Furnace temperature in step A is from room temperature to 400 DEG C ~ 500 DEG C, and insulation 40 ~ 70min can be replaced furnace temperature and is warming up to 400 DEG C ~ 500 DEG C from 150 ~ 250 DEG C, is incubated 60 ~ 100min.
Beneficial effect: the present invention adopts electric furnace that industrially pure titanium base is carried out Segmented heating, is effectively increased the being heated evenly property of blank, and the performance being conducive to final finished is uniform and stable；The present invention can meet the requirement of the titanium material many specifications of product small lot, and final products can be square or circular cross section industrially pure titanium bar, and product is more diversified.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further illustrated, but never in any form the present invention is any limitation as, and based on present invention teach that any conversion or replacement made, belongs to protection scope of the present invention.
The invention provides a kind of method that semi-tandem rolling produces industrially pure titanium bar, comprise the following steps:
A, by industrially pure titanium base send into resistance-type heating furnace, adopt zone heating mode to be heated, first by furnace temperature from room temperature to 400 DEG C ~ 500 DEG C, be incubated 40 ~ 70min, then proceed to be warming up to 820 DEG C ~ 920 DEG C and carry out soaking insulation, soaking insulation 50 ~ 100min after temperature；
B, by through processing of step A titanium base send into roughing mill roll, rolling starting temperature be 750 DEG C ~ 850 DEG C, roll 4 ~ 7 passages, obtain roughing part；
C, by step B roll after bar send into finishing mill roll, rolling starting temperature be 680 ~ 780 DEG C, roll 4 ~ 11 passages, obtain finish rolling part；
D, rolled after, by rolled piece cool down, obtain industrially pure titanium rod product.
Furnace temperature in step A is from room temperature to 400 DEG C ~ 500 DEG C, and insulation 40 ~ 70min can be replaced furnace temperature and is warming up to 400 DEG C ~ 500 DEG C from 150 ~ 250 DEG C, is incubated 60 ~ 100min.150 ~ 250 DEG C herein come out of the stove for the previous industrially pure titanium base that resistance-type heating furnace heats after the scope of remaining temperature in stove.
The heating rate being warming up to 400 DEG C ~ 500 DEG C in described step A is 5 ~ 8 DEG C/min.
The heating rate being warming up to 820 DEG C ~ 920 DEG C in described step A is 3 ~ 5 DEG C/min.
Industrially pure titanium base described in step A is direct founding base or forging base.
Roughing mill described in step B is made up of φ 550 × 4+ φ 450 × 3 milling train, horizontally disposed, and front four frames are one drag two, and roughing 1 ~ 4 frame is de-groove rolling, and the roughing mills roller-way distance from mm finishing mill unit is 35m.
Finishing mill described in step C is made up of φ 380 × 2+ φ 320 × 9 milling train, and arrangement is 6,11 frames is Vertical Rack, and all the other frames are horizontal frames.
Roughing part described in step B is the square rods of the circular bar of φ 50 ~ φ 110mm or 58mm × 58mm ~ 90mm × 90mm, adopts No. 14 channel-section steels to cool down after being collected handling in roughing mill outlet and obtains.
The circular bar that finish rolling part is φ 12 ~ φ 40mm described in step C, utilizes flying shear to carry out multiple length segmentation after rolling, then carry out cooling at tooth bar walking beam cooler and obtain.
Embodiment 1
A, direct for the industrially pure titanium being of a size of 150mm × 150mm × 2000mm founding square billet is sent into the resistance-type heating furnace of 150 ~ 250 DEG C it is heated, when furnace temperature is warming up to 450 DEG C, heating rate is 5 DEG C/min, insulation 70min, then proceed to be warming up to 840 DEG C, heating rate is 3 DEG C/min, soaking insulation 60min after temperature；
B, by heating after titanium base send into roughing mill roll.Rolling starting temperature is 750 DEG C, rolls 4 passages, can obtain the square rods of 90mm × 90mm；Roll 7 passages, the square rods of 58mm × 58mm can be obtained；Changing the 4th frame pass is circular port, can obtain the circular bar of φ 110mm；Sky crosses the 5th frame, and changes 6,7 passage passes, namely rolls 6 passages, can obtain the circular bar of φ 50mm or the square rods of 70mm × 70mm.
After having rolled, cooling after roughing mill outlet adopts No. 14 channel-section steels to be collected handling, obtain industrially pure titanium rod product.This product is through inspection, and its room-temperature mechanical property is better than GB/T2965 requirement comprehensively, is shown in Table 1.
Table 1 industrially pure titanium bar room-temperature mechanical property
Embodiment 2
A, by be of a size of 165mm × 165mm × 5000mm industrially pure titanium forge square billet send into resistance-type heating furnace be heated, when furnace temperature is from room temperature to 500 DEG C, heating rate is 8 DEG C/min, insulation 60min, then proceeding to be warming up to 910 DEG C, heating rate is 5 DEG C/min, soaking insulation 80min；
B, by heating after titanium base send into roughing mill roll.Rolling starting temperature is 830 DEG C, rolls 7 passages, obtains the square rods of 58mm × 58mm.
C, for obtaining the bar of more small dimension further, the bar after being rolled by step B is sent into finishing mill and is rolled.Rolling starting temperature is 740 DEG C, rolls 10 passages, can obtain the circular bar of φ 16mm；Roll 4 passages, obtain the circular bar of φ 40mm.
D, rolled after, utilize flying shear to carry out multiple length segmentation, then cool down at tooth bar walking beam cooler, obtain industrially pure titanium rod product.This product is through inspection, and its room-temperature mechanical property is better than GB/T2965 requirement comprehensively, is shown in Table 2.
Table 2 industrially pure titanium bar room-temperature mechanical property
Embodiment 3
A, by be of a size of 150mm × 150mm × 4000mm industrially pure titanium forge square billet send into resistance-type heating furnace be heated, when furnace temperature is from room temperature to 400 DEG C, heating rate is 7 DEG C/min, insulation 50min, then proceeding to be warming up to 820 DEG C, heating rate is 4 DEG C/min, soaking insulation 100min；
B, by heating after titanium base send into roughing mill roll.Rolling starting temperature is 750 DEG C, rolls 7 passages, obtains 58mm × 58mm square rods.
C, for obtaining the bar of more small dimension further, the bar after being rolled by step B is sent into finishing mill and is rolled.Rolling starting temperature is 680 DEG C, rolls 11 passages, can obtain the circular bar of φ 12mm.
D, rolled after, utilize flying shear to carry out multiple length segmentation, then cool down at tooth bar walking beam cooler, obtain industrially pure titanium rod product.This product is through inspection, and its room-temperature mechanical property is better than GB/T2965 requirement comprehensively, is shown in Table 3.
Table 3 industrially pure titanium bar room-temperature mechanical property
Claims (9)
1. the method that a semi-tandem rolling produces industrially pure titanium bar, it is characterised in that comprise the following steps:
A, by industrially pure titanium base send into resistance-type heating furnace, adopt zone heating mode to be heated, first by furnace temperature from room temperature to 400 DEG C ~ 500 DEG C, be incubated 40 ~ 70min, then proceed to be warming up to 820 DEG C ~ 920 DEG C and carry out soaking insulation, soaking insulation 50 ~ 100min after temperature；
B, by through processing of step A titanium base send into roughing mill roll, rolling starting temperature be 750 DEG C ~ 850 DEG C, roll 4 ~ 7 passages, obtain roughing part；
C, by step B roll after bar send into finishing mill roll, rolling starting temperature be 680 ~ 780 DEG C, roll 4 ~ 11 passages, obtain finish rolling part；
D, rolled after, by rolled piece cool down, obtain industrially pure titanium rod product.
2. the method that semi-tandem rolling as claimed in claim 1 produces industrially pure titanium bar, it is characterised in that by furnace temperature in step A from room temperature to 400 DEG C ~ 500 DEG C, insulation 40 ~ 70min replaces with furnace temperature and is warming up to 400 DEG C ~ 500 DEG C from 150 ~ 250 DEG C, is incubated 60 ~ 100min.
3. the method that semi-tandem rolling as claimed in claim 1 produces industrially pure titanium bar, it is characterised in that the heating rate being warming up to 400 DEG C ~ 500 DEG C in described step A is 5 ~ 8 DEG C/min.
4. the method that semi-tandem rolling as claimed in claim 1 produces industrially pure titanium bar, it is characterised in that the heating rate being warming up to 820 DEG C ~ 920 DEG C in described step A is 3 ~ 5 DEG C/min.
5. the method that semi-tandem rolling as claimed in claim 1 produces industrially pure titanium bar, it is characterised in that the industrially pure titanium base described in step A is direct founding base or forging base.
6. the method that semi-tandem rolling as claimed in claim 1 produces industrially pure titanium bar, it is characterized in that the roughing mill described in step B is made up of φ 550 × 4+ φ 450 × 3 milling train, horizontally disposed, front four frames are one drag two, and roughing 1 ~ 4 frame is de-groove rolling, the roughing mills roller-way distance from mm finishing mill unit is 35m.
7. the method that semi-tandem rolling as claimed in claim 1 produces industrially pure titanium bar, it is characterised in that the finishing mill described in step C is made up of φ 380 × 2+ φ 320 × 9 milling train, and arrangement is 6,11 frames is Vertical Rack, and all the other frames are horizontal frames.
8. the method that semi-tandem rolling as claimed in claim 1 produces industrially pure titanium bar, it is characterized in that the square rods of circular bar that the roughing part described in step B is φ 50 ~ φ 110mm or 58mm × 58mm ~ 90mm × 90mm, adopt No. 14 channel-section steels to cool down after being collected handling in roughing mill outlet and obtain.
9. the method that semi-tandem rolling as claimed in claim 1 produces industrially pure titanium bar, it is characterized in that the circular bar that finish rolling part is φ 12 ~ φ 40mm described in step C, utilize flying shear to carry out multiple length segmentation after rolling, then carry out cooling at tooth bar walking beam cooler and obtain.
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| CN201610151796.XA CN105710127B (en) | 2016-03-17 | 2016-03-17 | A kind of method of semi-tandem rolling production industrially pure titanium bar |
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| CN105710127B CN105710127B (en) | 2018-02-16 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114393031A (en) * | 2021-12-17 | 2022-04-26 | 重庆钢铁股份有限公司 | Rod rolling system suitable for multi-specification production |
| CN114602971A (en) * | 2022-04-01 | 2022-06-10 | 浙江富钢金属制品有限公司 | Production process of pure titanium ingot by one-step firing |
| CN114918249A (en) * | 2022-05-21 | 2022-08-19 | 湖南华菱湘潭钢铁有限公司 | Production method of large-size gear round steel |
| CN115502202A (en) * | 2022-10-11 | 2022-12-23 | 攀钢集团攀枝花钢铁研究院有限公司 | Titanium and titanium alloy square billet processing method |
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| CN101085451A (en) * | 2006-06-06 | 2007-12-12 | 厦门虹鹭钨钼工业有限公司 | Method for rolling pure titanium rod and wire |
| CN103008341A (en) * | 2012-12-12 | 2013-04-03 | 宝钛集团有限公司 | Titanium and titanium alloy bar hot continuous rolling production line and production process |
| CN104148382A (en) * | 2014-07-21 | 2014-11-19 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for manufacturing titanium and titanium alloy bars by means of hot continuous rolling |
| CN104588408A (en) * | 2015-01-23 | 2015-05-06 | 武钢集团昆明钢铁股份有限公司 | Heating method for industrial pure-titanium square billet |
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2016
- 2016-03-17 CN CN201610151796.XA patent/CN105710127B/en active Active
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| JPH07171603A (en) * | 1993-12-20 | 1995-07-11 | Shinhoukoku Seitetsu Kk | Manufacture of hexagonal pure titanium bar |
| JPH09225501A (en) * | 1996-02-21 | 1997-09-02 | Sumitomo Metal Ind Ltd | Production of titanium or titanium alloy small diameter wire |
| CN101085451A (en) * | 2006-06-06 | 2007-12-12 | 厦门虹鹭钨钼工业有限公司 | Method for rolling pure titanium rod and wire |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114393031A (en) * | 2021-12-17 | 2022-04-26 | 重庆钢铁股份有限公司 | Rod rolling system suitable for multi-specification production |
| CN114602971A (en) * | 2022-04-01 | 2022-06-10 | 浙江富钢金属制品有限公司 | Production process of pure titanium ingot by one-step firing |
| CN114602971B (en) * | 2022-04-01 | 2024-07-30 | 浙江富钢集团有限公司 | Production process of pure titanium ingot one-fire forming material |
| CN114918249A (en) * | 2022-05-21 | 2022-08-19 | 湖南华菱湘潭钢铁有限公司 | Production method of large-size gear round steel |
| CN115502202A (en) * | 2022-10-11 | 2022-12-23 | 攀钢集团攀枝花钢铁研究院有限公司 | Titanium and titanium alloy square billet processing method |
| CN115502202B (en) * | 2022-10-11 | 2024-05-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Titanium and titanium alloy square billet processing method |
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| CN105710127B (en) | 2018-02-16 |
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