JPS62282704A - Hot rolling method for titanium or titanium alloy - Google Patents
Hot rolling method for titanium or titanium alloyInfo
- Publication number
- JPS62282704A JPS62282704A JP12465186A JP12465186A JPS62282704A JP S62282704 A JPS62282704 A JP S62282704A JP 12465186 A JP12465186 A JP 12465186A JP 12465186 A JP12465186 A JP 12465186A JP S62282704 A JPS62282704 A JP S62282704A
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- titanium
- mentioned
- theta1
- hot rolling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 239000010936 titanium Substances 0.000 title claims abstract description 34
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 34
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 13
- 238000005098 hot rolling Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000005096 rolling process Methods 0.000 claims abstract description 43
- 239000000463 material Substances 0.000 claims abstract description 31
- 239000000956 alloy Substances 0.000 claims abstract description 7
- 230000003247 decreasing effect Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 101150041326 air-2 gene Proteins 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
Classifications
-
- 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
- B21B1/38—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 sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2273/00—Path parameters
- B21B2273/02—Vertical deviation, e.g. slack, looper height
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
〔産業上の利用分野〕
本発明はチタン或いはチタン合金（以下筆にチタン材と
いう）の熱間圧延方法に関するもので、特に熱間圧延中
のチタン材の波反りを軽減する圧延法に係る。[Detailed Description of the Invention] 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a method for hot rolling titanium or a titanium alloy (hereinafter referred to as titanium material), and particularly relates to a method for hot rolling titanium or a titanium alloy (hereinafter referred to as titanium material). The present invention relates to a rolling method for reducing wave warpage in titanium materials.
一般にチタン材スラブを製造する方法としては、まず真
空溶解炉で溶解したチタンを断面が丸形の鋳塊とし、こ
れを鍛造によってスラブに一次成形し、次に分塊圧延に
よって所定の寸法のスラブに仕上成形後、１ｙ、仮、熱
延の圧延工場に供給する方法が知られている。（特開昭
５７−１４５９４４号公報、特開昭５６−１６３００１
号公報等）
ところでチタン材をかかる工程で熱間圧延する際には、
良好な材質特性を６′α保するためα域（９５０℃以下
）で熱間加工することも知られている。In general, the method for producing titanium slabs is to first form titanium into an ingot with a round cross section by melting it in a vacuum melting furnace, first form it into a slab by forging, and then form it into a slab of predetermined dimensions by blooming. A method is known in which the material is finished and then supplied to a rolling mill for 1y, temporary and hot rolling. (Japanese Patent Application Laid-open No. 57-145944, JP-A No. 56-163001
By the way, when hot rolling titanium material in such a process,
It is also known to carry out hot working in the α region (950° C. or lower) in order to maintain good material properties at 6'α.
しかし乍ら熱間でのチタン材の変形抵抗は、その温度降
下に伴って著しく変化するため圧延が非常に困難である
。例えばＴｉ−Ｇ＾ｘ−４ｖでは、９００℃で１３ｋｇ
／飄−２が８５０℃で２５ｋｇ／ｍ霧２．８３０℃で４
０ｋｇ／重−”、８００℃で４５ｋｇ／麟−２と急激な
変化となり、従って非常に短い時間の間に圧延を終える
ことが屯要となる。However, the deformation resistance of titanium material in hot conditions changes significantly as the temperature drops, making rolling it extremely difficult. For example, in Ti-G^x-4v, 13kg at 900℃
/Air-2 is 25kg/m fog at 850℃.4 at 830℃
There is a sudden change from 0 kg/weight to 45 kg/weight at 800°C, and therefore it is necessary to finish rolling within a very short time.
加えて、チタン材の物性からみても、熱伝轟率が鉄の１
７３以下と小さく、一旦チタン材の表面が冷却されると
鉄のように内部温度により復熱することが期待できない
。In addition, considering the physical properties of titanium material, the thermal conductivity is 1 that of iron.
73 or less, and once the surface of the titanium material is cooled, it cannot be expected to recover heat due to the internal temperature like iron.
この結果、チタン材の圧延中、その表裏面の温度差は益
々大きくなり、表裏面の冷速差によって著しい反りが発
生ずる。上向きに反ったままで圧延すると、その上反り
が益々助長され噛込み不能となり圧延を４１ ｈｉする
ことができない。As a result, during rolling of the titanium material, the temperature difference between the front and back surfaces becomes increasingly large, and significant warping occurs due to the difference in cooling speed between the front and back surfaces. If it is rolled while it is warped upward, the warp will be further promoted and it will not be possible to engage the material, making it impossible to perform rolling for 41 hi.
又一旦反りが発生ずると、これを矯正しようとして圧力
をかけてももとの形に戻ってしまうことも経験している
（熱間プレスが必要）。I have also experienced that once a warp occurs, even if pressure is applied to correct it, it returns to its original shape (hot pressing is required).
従って圧延上はこの反りを下向きにして圧延を継続する
こととなるが、別の問題点が発生する。Therefore, rolling is continued with this warpage facing downward, but another problem occurs.
即ちこの点を第２図を用いて説明すると、第２図のＡは
圧延開始直後であるが、チタン材１は圧延の進行に伴な
ってその先端が１コーラテーブル２に接触して上向きの
力を受は反りが部分的に矯正された波反りが発生しく第
２図Ｂ）、出側では第１図Ｃのように大きな波反り成品
となり、後続の加工で大きな支障となる。That is, to explain this point using Fig. 2, A in Fig. 2 is immediately after the start of rolling, but as the rolling progresses, the tip of the titanium material 1 comes into contact with the cola table 2 and is tilted upward. When the force is applied, the warpage is partially corrected and a wave warpage occurs (Fig. 2B), and on the output side, the product becomes a large wave warpage as shown in Fig. 1C, which becomes a major hindrance in subsequent processing.
本発明は、これらの実状に鑑み、波反りを大きく軽減す
る圧延法を提供せんとするものである。In view of these circumstances, the present invention aims to provide a rolling method that greatly reduces wave warpage.
本発明は、チタン或いはチタン合金材を熱間圧延するに
あたり、チタン或いはチタン合金材を圧延方向線に対し
所要の角度傾けて圧延し、次パスでは圧延方向線に対し
前記とは逆の方向に傾けて圧延し、これを交互に繰返し
て圧延することを特徴とする、チタン或いはチタン合金
の熱間圧延方法である。In the present invention, when hot rolling titanium or titanium alloy material, the titanium or titanium alloy material is rolled at a required angle with respect to the rolling direction line, and in the next pass, the titanium or titanium alloy material is rolled in the opposite direction to the rolling direction line. This is a hot rolling method for titanium or titanium alloy, which is characterized by rolling at an angle and repeating this rolling process alternately.
これによって円滑な圧延が確保され、所定時間内で圧延
が完了し、反りの小さい成品が得られるものである。This ensures smooth rolling, completes rolling within a predetermined time, and provides a product with little warpage.
以下に本発明の作用を図面に示す実施例に基づいて具体
的に説明する。The effects of the present invention will be specifically explained below based on embodiments shown in the drawings.
第１図は本発明による圧延法を平面的に表わした図であ
り、チタン材ｌは圧延方向ｘ−ｘ、ｖＩに対しチタン材
長手方向中心線が０３度傾けられて圧延が進行する。FIG. 1 is a plan view showing the rolling method according to the present invention, in which the titanium material I is rolled with the longitudinal center line of the titanium material being inclined by 03 degrees with respect to the rolling direction xx, vI.
これによって前述したような波反りが圧延ロール２軸線
と平行してあられれる。As a result, the above-mentioned wavy warpage occurs parallel to the two axes of the rolling rolls.
しかしこれを次パスでは圧延方向Ｘ−Ｘ線と対称的に反
対の方向に７１ｊ１け（０２度）で圧延することにより
、前述の波反りの方向がθ、十θ２度ロール軸線に対し
て（頃いた状態で圧延ロールに送り込まれることになり
、その反りが大幅に低減するものである。However, in the next pass, by rolling this at 71j1 degrees (02 degrees) in the opposite direction symmetrically to the rolling direction Since the rolled material is sent to the rolling rolls in a rolled state, the warpage is significantly reduced.
この効果が大きいのは１５度以上であるが、θ１と０２
は必ずしも等しくなくてもよい。This effect is large at 15 degrees or more, but θ1 and 02
may not necessarily be equal.
実際」二は圧延ロールが噛込み可能な幅まで１頃けるこ
とになり、チタン材の長さが短かい場合は４５度まで傾
けることが出来る。In fact, it can be rolled to a width that allows the rolling roll to bite, and if the length of the titanium material is short, it can be tilted up to 45 degrees.
又１、チタン材の長さがロール胴長より短かい場合は、
ｌパス目を通常通り圧延し、次パスではこれを９０度傾
けることで波反りが軽減されるのであるが、実際上はチ
タン材の長さはロール胴長より大きいのが通例であるの
で、大半のチタン材には採用できない。1. If the length of the titanium material is shorter than the roll body length,
The first pass is rolled as usual, and the next pass is tilted 90 degrees to reduce wavy warpage, but in reality, the length of the titanium material is usually larger than the roll body length. It cannot be used for most titanium materials.
チタン材としては下記のものを用いた。 The following titanium materials were used.
成分（重量％）・・・八ｊｌ！ ： ６．１０〜６．５
０．Ｖ：３．９５〜４．３５． Ｆｅ： ０．１２〜０
．ｌ ８． Ｏ： ０．１（ｉ〜０．２０．残部：Ｔｉ
形状・・・ＩＩＩ ： １２００ｍｍ、長さ：２５００
ｍ自、厚さ：１６０■霧実施した圧延材のロール胴長
は２０３０關である。Ingredients (wt%)...8jl! : 6.10~6.5
0. V: 3.95-4.35. Fe: 0.12~0
．． l 8. O: 0.1 (i~0.20. Remainder: Ti Shape...III: 1200mm, Length: 2500
Thickness: 160 mm The roll body length of the rolled material was 2030 mm.
圧延方向線に対する傾斜角度は、１パス目（θ、）：２
５〜３０度、２パス目（θｉ：３０・・・３５度とし、
これを交互に繰返して１１パス行ない、チタン材料のｊ
７さを８８■−とした。The inclination angle with respect to the rolling direction line is 1st pass (θ,): 2
5 to 30 degrees, 2nd pass (θi: 30...35 degrees,
This process was repeated alternately for 11 passes, and the titanium material was
7 was set at 88■-.
第３図△は本発明の実施例で、波反りの最大はＩＱＯｓ
ｍであった。これは第３図Ｂに示す従来法での波反りの
最大２１５１１１１に比べて大１＋な減少である。Figure 3 △ is an example of the present invention, where the maximum wave warpage is IQOs
It was m. This is a large 1+ reduction compared to the maximum wave warpage of 2151111 in the conventional method shown in FIG. 3B.
以上述べたように、本発明によれば従来法に比し大幅な
波反り軽減が図れるため、１パス当りの圧下量を大きく
とれるので圧延ｎＦ率、ヒート回数の減少による燃料、
電力等エネルギー原単位の切下げが可能となるなどの効
果をもたらす。As described above, according to the present invention, it is possible to significantly reduce wave warping compared to the conventional method, and the reduction amount per pass can be increased, so that the rolling nF ratio and the number of times of heating can be reduced, resulting in a reduction in fuel consumption.
It brings about effects such as making it possible to lower unit energy consumption such as electric power.
第１図は本発明の圧延状況を示す平面図、第２図は本発
明を説明するための従来の圧延状況を示ず図、第３図は
本発明と従来法による圧延後のスラブの波反り状況を示
す図である。Fig. 1 is a plan view showing the rolling situation according to the present invention, Fig. 2 is a plan view showing the conventional rolling situation for explaining the present invention, and Fig. 3 is a plan view showing the rolling situation of the slab according to the present invention and the conventional method. FIG. 3 is a diagram showing a warpage situation.
Claims (1)
タン或いはチタン合金材を圧延方向線に対し所要の角度
傾けて圧延し、次パスでは圧延方向線に対し前記とは逆
の方向に傾けて圧延し、これを交互に繰返して圧延する
ことを特徴とする、チタン成いはチタン合金の熱間圧延
方法。When hot rolling a titanium or titanium alloy material, the titanium or titanium alloy material is rolled at a required angle with respect to the rolling direction line, and in the next pass, the titanium or titanium alloy material is tilted in the opposite direction to the rolling direction line. A method for hot rolling titanium or a titanium alloy, characterized by rolling the titanium material and rolling the titanium alloy by repeating the rolling process alternately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12465186A JPS62282704A (en) | 1986-05-31 | 1986-05-31 | Hot rolling method for titanium or titanium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12465186A JPS62282704A (en) | 1986-05-31 | 1986-05-31 | Hot rolling method for titanium or titanium alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62282704A true JPS62282704A (en) | 1987-12-08 |
Family
ID=14890682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12465186A Pending JPS62282704A (en) | 1986-05-31 | 1986-05-31 | Hot rolling method for titanium or titanium alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62282704A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0446603A (en) * | 1990-06-14 | 1992-02-17 | Nkk Corp | Spreading rolling method in rolling mill |
| CN102172638A (en) * | 2010-12-28 | 2011-09-07 | 西部钛业有限责任公司 | Titanium and titanium alloy thin plate camber controlled rolling method |
-
1986
- 1986-05-31 JP JP12465186A patent/JPS62282704A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0446603A (en) * | 1990-06-14 | 1992-02-17 | Nkk Corp | Spreading rolling method in rolling mill |
| CN102172638A (en) * | 2010-12-28 | 2011-09-07 | 西部钛业有限责任公司 | Titanium and titanium alloy thin plate camber controlled rolling method |
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