TWI293987B - - Google Patents

Description

1293987

V. INSTRUCTION DESCRIPTION OF THE INVENTION (1) Field of the Invention The present invention relates to a gold bar having excellent ductility, fatigue characteristics, and processability, and more particularly to an α + /3 type titanium alloy bar and a manufacturer thereof, and a convergence of the prior art. Because of its high strength and lightness, it is also excellent in corrosion resistance. It is used in chemical X plants, generators, airplanes, etc. as a structure. Among them, a 2 + /3 type titanium alloy which is high in strength and relatively well-processed is often used.丨王之α Among the products using titanium alloys, there are thin plates, thick plates and bars. Among the bars, there are direct users in their original shape, and the complex shape of the threaded part of the bolts is formed, or the coarseness is added: Γ =, in addition to the excellent elongation of the bar itself, Requires excellent processability. The characteristic property of the bar is 0 1 is a typical manufacturer of the bar, and the ingot produced by the melting is processed into a ° by forging (making a roll material. As shown in Fig. 2, Β, 2Β, 1 1 et) After heating in the hot furnace, the reversible type is used to "add the small embryos to the line. If necessary, the temperature can be applied by the = roll machine. ... The furnace is heated again to the middle of the roll." The degree of alloy bar will be 4, because & can not reach the safety." To the ductility, fatigue, ... the status quo of the rolling text can not be unleashed and the excellent titanium alloy bar. For example,

1293987 V. INSTRUCTION OF THE INVENTION (2) When the temperature of the right-handed material rises above the 10,000-degree point, it becomes a 10,000-phase structure in which the main body is needle-shaped, so that excellent ductility and fatigue characteristics are not obtained. In addition, since the 5/5 metamorphic point is very high, even if the heat is hard to be rolled, the temperature of the material becomes a Ti-6A1-4V alloy having a temperature above the variability point. If the temperature of the roll rises due to processing heat, the grain is promoted. Growing up, the helmet is given excellent ductility, fatigue characteristics and processability. As a method for solving the problem of temperature rise due to processing heat, Japanese Laid-Open Patent Publication No. SHO 59-82-01 discloses that at each of the alpha domain temperature and the =+ dot domain temperature, 1 Roller ring groove 1 - Pass) The reduction in cross section is set to _ below the milk roll method. In addition, it is disclosed in Japanese Unexamined Patent Publication No. Hei. No. 4 discloses a method for suppressing the water-cooling of the light-weighted material by the core 1 in order to suppress the heat generated by the processing. Then, in the paper ίπΐ rt R〇Uing 〇f Tl^6A^4V - a cont.nuous 述· 2 2 92 SCienCe and Techno10^)", remember: ί I processing heat itself must slow down the roll speed To the performance limit of the roll machine used. In the method of the publication of the Gazette No. 59_821Q1 and the publication of JP-A-58_2_, a titanium alloy bar having ductile fatigue cannot be obtained. It is excellent in the properties and the addition of the jade. In the method of the publication No. 59-821 °2, the reduction rate of the cross-section per one ring ring groove is also sufficient depending on the type of the alloy. Furthermore, in the method of the Japanese Patent Publication No. 58-25465, the material is deteriorated due to the absorption of hydrogen, and the production is caused by rapid cooling.

MM 91108 Ββ1 1293987 V. Description of invention (3) Change: Wen Yi 2 has difficulty in correctly controlling the temperature, which is the problem. In the method described in Nawen 1, the object is very hot, and it is not suitable for lower temperature.:: If the following gold, it is impossible to obtain excellent ductility and fatigue #二:昆之合In Fig. 3, it is shown in Tl-6A1-4V^3^= workability. ?Mn into the eight skills 1 and li-4.5Al-3V~2Fe - the temperature of the rolled material and the lightening time of the material when the material is lightly rolled, the heating temperature is compared with Ti-6AI-4v^ Ti - 6aimv alloy low lotren. / 〃 is 9 5 0 C, in stone metamorphosis; make = except... 仏 use reversible roll machine and tandem milk season ratio ^^*(rolllng reduct 1〇π) Λ^^ ^ ^ cAd,, step schedule (pass - the second of the two alloys are the same. The rolling mill using the reversible roll machine is set at 2.7 m / s, using a tandem rolling machine 2 2 ra:i The speed of the final rolling ring groove, both alloys are set to 6 = trial. Χ 'This speed is lower than the light speed (6m / sec) of the above paper 1 2 3 4 The speed of the interception of the workers - 26%. Unloading the brakes, in the case where the two alloys are defined as the maximum energy alloy rolls, the magnetic properties are obtained in the low temperature range of the alloy. In the case of good law 2, in the case of 14.5Al~3V-2Fe-2Mo alloy, ::f deducts the heating temperature from the lower part of the point metamorphic point, because it is tied to low resistance = 'processing heat becomes larger Leading to being rolled The juice of the material has reached a temperature range of more than 10,000 k sad points.

1. Excellent, fatigue characteristics and processability cannot be obtained. This 2 3 C: \总档\91 \91 103561 \91103561 (replace)-3 ptc^ 4 ang 7 pages 1293987

"--_寺月曰2006 0 2 MAY V. Invention description (4) "一" '一—— ----correction of the word> i? shape shows that not only dry 1, It is also necessary to consider the time between the roll ring groove and the like, and the disclosure of the invention. The object of the present invention is to provide a ductile and excellent high-strength titanium alloy rod and a manufacturer thereof; the purpose of labor property and workability can be substantially "% by mass" of A1 + titanium. :4 ;: The material is to be achieved, which is 3.5% or less, ": 1.5% or more and 2.5% or less, ^^", ^, ^: 2.5% or more, and the rest...·Π所槿忐·日丘& AM〇 l 5% or more and 2 5% or more and m or less, 4 kg /, 2 ^, and 斫 The average crystallization of the α phase is parallel to the roll direction # % β1 Pulling rainbow is 1 〇 / / m or less, below 4 The aspect ratio of the crystal grain of the cross section of the α + /5 type titanium alloy bar can be maintained by the surface temperature - directly below the /5 metamorphic point η. In the case of the invention of the invention, the construction of the jur month, etc., the composition of the titanium alloy bar is::]; the excellent ductility, fatigue characteristics and workability can be obtained by weaving. As a result, the following findings are found. +Stone-type titanium alloys are composed of α-phase and metamorphic phase before pre-eutralization, or have a large volume fraction of HCP structures with few sliding systems. Or even if the volume fraction of the metamorphic phase with the needle-like α phase is extremely large, the workability and ductility are lowered. Therefore, the "target volume" before the eutectoid

1293987 V. Description of invention (5) = 10% to ±9_. Moreover, in the case where the volume fractions of the hot working are equal or similar, the processing is as follows: Therefore, the volume fraction of the α phase before the eutectoid is 5 〇% or more and 8 〇% or less. ηΓ::: Total The relationship between the average crystal grain size of the front phase and the tensile length through high temperature: a graph. Before the eutectoids, the average crystal size of the target is reduced, and the total elongation of the α phase through the tensile test will be rushed to the average crystal grain size of the α phase before the precipitation and the fatigue test system. ^图: and the closing strength of J f (alternatlng stress •• alternating stress); drop; if the crystal grain size of I = f exceeds 10 (four), the fatigue is small, then the average particle size of the fatigue is more than 6_ for forging In the case of a bar, the surface is rough due to the shape of the crystal grain (that is, the case where the freely deformed surface meets. It is often used in the bar: the height ratio of the bar: tendency. In particular, in the case where the forged rough center 'η crystal grain has a structure extending toward the roll direction, it will appear in the case of forging from j), because the side surface of the bar after the forging is prevented from being large and specific. In the case of (10), the cross section of the crystal grain of the α phase before the eutectoid is parallel to the roll direction, and the above description is set to 4 or less. Up to 90% or less, and 5% by volume of the two-phase volume fraction is set to 10%, and the average crystal grain size is preferably 丨〇8 χ, and the M U1 of the α-phase before the eutectoid is removed from the bottom, In particular, it is better to be 6 #m or less, and to enter 1293987. 5. Inventive Note (6) In one step, the aspect ratio parallel to the roll direction is set to 4 or less. >, a high-strength titanium alloy rod having a crystal grain of the pre-phase α phase. "The ductility, fatigue characteristics, and processability are excellent in the α + point of such a structure." The composition must be set to be substantially 5% or less, and Fe: 丨1 · 4/° or more. % or less, V: 2. 5% 5% or less, and the rest: Tim constitutes less than 5%% ^, Mo: 1.5% or more 2. Description: The reason for the limitation of the content of each 70 element A 1 : for the α phase If it is less than 4%, then the profit method is fortunate:! If the contribution is high strength 5%, the ductility will be worse. The filling knife reaches the strength, if it exceeds V: the 泠 phase is stabilized. If you are less than 2. 5 %, you will not be able to recharge your eight. Fortunately, the Gubei% is dedicated to the high-intensity total macro, and the knives have reached the strength of the knives. · 5%, because the point variable energy area is narrow, and the cost is increased by two to one, 14 processing temperature is two.::== fixed = element, 'also contributes to high intensity = If the U is 1.5%, the high strength cannot be fully achieved, and if the target is more than 2.5%, the processing area will be narrowed due to the decrease of the call point, and the cost will increase. Umbrella low 35 processing / dish degree F:., so that the /5 phase is stabilized, it also contributes to the high strength of the second; see the diffusion speed, improve the processing effect, If it is less than 1·5/〇, it will not be able to achieve high strength, and the phase will be unstable, and excellent workability will not be obtained. If it exceeds 2.5%, the processing temperature will be lowered due to the decrease of the call point. Narrowed and caused by segregation (segregati〇n)

1293987 2005 〇 2 MAY 倐正一替搏可曰ΛΜ 曰ΛΜ 911Q3BRJ_ V. Invention description (7) The resulting deterioration of the characteristics of the α + 10,000 titanium alloy of the present invention, temperature, roll temperature domain, mouth Α 牛, can borrow When the roll speed is adjusted, the roll speed is adjusted, and the surface temperature is kept constant, and the temperature of the σ worker heat rises while the roll gap is adjusted. For example, the method of hot rolling for the formula below the r metamorphic point is the method of the step described below for the step T of cold cooling, which is a step of the following step, which is a transition of /3 to 150) t or more. Titanium f, so that the surface temperature becomes (the step of heating the meteorite by heating the α + 10,000 type 1 ^; and the surface temperature becomes (Tyg_3 〇 ^ = two, rolling the teeth in the Kun The surface of the light-rolled lightweight material and the final processing after the final dry roll wins the range below the '(W)t ^ temperature / (5) - 3 〇〇) °c above, must be before the roll V force into = milk step. rc below the range, the degree of tempering is heated to ("-15 〇 rCmT in the final stage of the rolling; by: = two if not full ("-150) 〇 c, the crack sensitivity And the "decrease in the deformation resistance will increase", causing the structure of the material to become the needle & 2 (four) point c 'the workability of the roll is deteriorated. Also, the stone structure of the 'induced ductility and addition ( T t or more (======================================================================================================== =[45〇rc, it will cause the temperature due to processing heat = 变 coarse and the formation of needle-like structure. In addition, after the rolling of the enamel is completed, the surface after the finishing of the ring groove is completed. The final surface temperature of the temperature shall be set to ("-3〇〇) t to ±(τ ηοο), the following range:

1293987 V. INSTRUCTIONS (8) Forced rise = underfill (tum - 3 0 0 ) C, then crack sensitivity and deformation resistance ^. If the right is over (by 1 〇〇)1, it will cause the crystal grains to become coarse. The light ring groove is rolled twice, and it is better to prevent it. In addition, when the amount of rolling per one roll is set to 40% or less, the type of hot roll is used to prevent the processing, so that the processing is performed, so that the speed of the roll is set to 6 m. / second or less is better. When using a tandem roll mill, it is preferable to use 5 m/sec or less. 71 The hole 疋 degree is 1 · Before the rolling of the pro-ring groove, the surface of the material is also rolled, and the temperature of the next 6 dry π, 右 has a right degree of temperature reduction. However, as shown in Fig. 6, the diameter of the rolled material is reduced by the temperature of the roll, the temperature of the roll, and the temperature of the center of the material. The condition of the watch, the brother, and the I degree of the table of the glutinous rice and the b-baked material in the center part and the center part are sealed by the roll. The temperature drop in the center is small: the month condition 'before the temperature in the center is lowered: the illusion, the first. ::: Count. #Continue this - phenomenon, center neighbor

曰 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 m ^ There is a sufficient time between the rolls and the groove, so that the inventors have reviewed the layer as shown in Fig. 7. , the temperature difference in the center of the eye is detailed in the direction of the roll and the direction of the right angle j. The temperature difference is greater than the J曰 of the roll material] The area of the stamp is 3500 丽 2 or more significantly increased m C: \ total file \91\91103561 \91103561 (replacement)·3. ptc Page 12 1293987

〇::Truncation: The cross-sectional area of such a large roll of rolled material is ^ will be reversed to the next - the start time of the roll is set at 0.167 x, better with i: the temperature can be reduced to obtain a characteristic of uniformity In addition, in the manufacturing method of the present invention, the surface temperature is kept at the cold deformation point so that the interval between the roll ring grooves and the surface temperature of the rolled surface are close to the side in the roll. In this case, by the high example, since the rolled material is hot-rolled so as to be under the surface of the rolled material, the appropriate roll temperature range of the rolled material can be made depending on the diameter of the roll. Reheating is performed by a low temperature frequency heating device or the like. The α+/3 type titanium alloy A〇l (in the present invention) and A02 (outside the scope of the present invention) shown in the chemical composition of Table i are cut into 125mm four-way caliper (callber) rolling machine to The rolled B18 shown in Table 2 produced a bar having a diameter of 20 _ or 5 〇 _. The roll date in the table: each roll condition t ′ all the roll rings in the roll ring groove: two: the time is o.m xS, the case of less than the case is not obvious, not the door width is shown by X. Further, the cross-sectional area S of the roll material, the amount of shrinkage, the 〇·丨67 x S1, 2, the time of rolling, the surface temperature, and the roll speed under the respective roll conditions are shown in the table. 3 ~ Table 2 〇. Table ϋ = Roller bar R shows reversible roll mill, τ shows tandem j roll will be made of bar more than 700 t 720 It is annealed two pomelo test 'measured drop strength (0.2% PS), pull Tensile strength (UTS) / extension (E1), section shrinkage (RA). A smoothing test (conditional notch test (condition: Kt = 3) was carried out to measure the fatigue strength.

1293987 V. Invention description (ίο), inspection micro: organization, observe the micro-tissue of the center of the bar (1/4D), determine the 1/4 position of the straight line, its volume fraction and The ratio of crystal grains to the α phase before the dry direction. The width of the crystal grains of the cross section of the crucible is not as good as that of Table 21. In the micro-organism column in the table, the part is only composed of needle-like α and no crystal grain size, and it is impossible to observe the equiaxed pre-eutral pre-eutral phase. Τ /5-150) In the case of t, it is rolled. If the heating temperature of the surface is low, the load on the roll will be exceeded and the surface temperature of the helmet will be over. . High conditions, such as roll strips 2 and 丫 :: If the heating temperature is longer than the time of the present invention, even if the roll ring groove is high, the surface temperature of the processed b-material will still pass.

/5, the surface temperature of the turtle in the center is more than T, and the fatigue characteristics are in the shape of a needle. The final surface temperature is delayed, and the temperature of the material will be If it is too low, if it is less than (T/3'300) °C, it will be rolled and again, and the field will be reduced in processability and cracks will occur in the rolls. The person takes the post-processing table, and the sore & The condition of Β〇4, Β05ί, ηΓΛ ^1〇〇) °C is high, such as milk ^ ^ ^ ^ ^ ^ and other seven, the microstructure can not be expected to be refined, the fatigue and fatigue characteristics will be worse . If the surface temperature of the roll material is not full (Τ -3 00 ° ° C) 2, the surface temperature of the material will be too low, causing cracks in the roll. The organization of the ministry is m-like. Fortunately, the center of the roll and the i/4d horse are mainly organized by needle-like alpha, which is delayed and fatigue-prone.

2006 〇 2 MAY 1 The main road is dragged. If the rolling reduction of the 轧1 roll ring groove exceeds 40%, the processing heat becomes large, and the temperature of the rolled material b exceeds the stone, which is impossible to refine the structure. "If the roll condition B1 4 uses a reversible roll machine, if the roll speed is more than 6 m / sec, or if the tandem roll machine is used as the roll condition β1 5 , the rolling speed is more than 1.5 m / sec. Then, the processing heat becomes large, and the surface temperature of the rolled material exceeds the T point, and the microstructure cannot be refined. The time between the roll ring grooves is outside the scope of the present invention, and the surface of the rolled material is processed. The rise in temperature will outweigh the decrease in temperature due to cooling, and the surface temperature of the rolled material will exceed τ.

Micro-fine. "J uses chemical composition within the scope of the invention A 〇 1, to report conditions

Bj) Bars made of l-, B06, B08, B09, B16, B17 and B18 can be observed for the uniform microstructure of the eutectoid 岫α phase with a crystal grain size of 丨〇 # m or less. Excellent ductility and fatigue properties are obtained. This #, can obtain an elongation of 15% X upper cross-section rate of more than 40%, smooth fatigue strength is above the surface Pa and lack of σ (Κΐ = 3) fatigue strength willow GMPaj = = extension i' Health and fatigue characteristics. Furthermore, such as roll conditions B〇1, b〇6, and B(4)

Generally, the volume fraction of the uranium alpha phase is more than 50% to 80%, and the average crystal grain size of the total crystallization is 6 # m or less. The w ^ type titanium alloy rod is known to be elongated. The ductility is 20% or more, the cross-sectional shrinkage rate is 5% or more, the flatness = fatigue is 55' or more, and the fatigue strength of the notch (Kt = 3) is more excellent in ductility and fatigue characteristics of 200 MPa. On the other hand, in the case of using chemical components outside the scope of the invention, A〇2

C:\总档\91\91103561 \91103561 (replace)-3.ptc g 15 page 1293987 V. Description of invention (12) The conditions of the rolling pro-B1 0 and B1 2 are _ " . ^ 衣衣以< In the bar, since the rolling condition is in the friction zone of the invention, the processing heat can be suppressed, and since the crystal grain size of the α phase before the eutectoid precipitation exceeds 10, sufficient ductility and fatigue strength σ cannot be obtained. In the example 1, the bar material manufactured by the roll condition Π (Π~Β18) was taken from the center portion of the cylindrical test piece of φ 8 mm X height and 12 mm, heated to 8 〇〇, and compressed by 70%, and examined under compression. Whether the crack and surface roughness occurred on the surface, the hot forgeability was evaluated. The results are shown in Table 2. The micro-structure micro-in the scope of the invention is the roll condition 6〇1, b〇6, b〇8, B0. 9. Bars made of B16, B17 and B18 have good hot forgeability without cracks and thick chain on the surface. On the other hand, the crystal grain size of α phase before eutectoid precipitation exceeds 1 〇# m The bar material produced by the roll conditions B1 0 and B1 2 has a rough surface when no crack occurs. The part and the 1 / 4 D part are made up of the /5 phase separately, and the bars are made by the rolling conditions B02, Β03, Β〇4, Β05, Β07, Β11, Β14, βΐ5, and both cracks and surface raw sugar are formed. Further, the crystal grain size and the volume fraction of the α phase before the eutectoid precipitation are within the scope of the present invention, and the lightness ratio of the crystal grain of the cross section parallel to the roll direction exceeds 4, and the light condition Β1 3, Inevitably, the surface is rough. '

0074 shirt 1293987 V. Description of invention (13) Table 1

Material A1 V Fe Mo 〇 C N Η /3 Metamorphic point A01 4.7 3.1 2.1 1.9 0.1 0.001 0.005 0.0017 900°C A02 6.1 4 . 1 0.2 — 0.2 0.01 0.006 0.0016 1100°C The unit is % by mass. Ιιιιι·ιι C:\2D-CODE\91-05\911035^r.ptd Page 17 007442 1293987 V. INSTRUCTIONS (14) Table Preparation Example of the Invention" Comparative Example | Comparative Example | I Comparative Example | 1 Comparative Example I Inventive Example II Comparative Example | 1 Inventive Example 1 I Inventive Example I | Comparative Example | 1 Comparative Example 1 I Comparative Example | Factory Comparative Example 1 1 Comparative Example | Factory Comparative Example 1 p Inventive Example 1 Factory Present Invention Example 1 1 Inventive Example 1 Wall eS a <;// UU ^ «一酿m og rH ιΗ m CN rH tH in (N rH rH ii) 03 iH rH in CN ri rH if) (N iH in c\ rH rH lo CN rH rH in CM rH rH if) ON rH H in CN rH tH LD 〇〇rH rH LO OO rH H m CN rH rH ο in γν CN LO ΓΝ tH in (NHH LO C\ rH tH -Μ δ Ss® 5 © «? Γ- OQ r- CN oo r- (N r- fN 卜 OQ 卜 (N Γ» 卜 fM 卜 CN Γ - OQ CO o rH (N Γ- cs (N CN max 1 ring groove Reduction rate (%) 00 00 00 inch CO inch inch CO 00 00 00 inch 00 00 00 GO 00 LO PO LO CN in ΓΝ OJ inch in 00 00 rH LO CN if) (N in CN in (N 00 rH LO (N In CN LO (N 00 m CN in ΓΝ all ring number rH Γ- rH 卜rH 00 r- oo rH rH r- rH r- fH r- iH rH C\ rH Γ- rH Γ- rH Γ- rH ΓΝ H iH Time between ring grooves 〇X 〇X 〇〇〇〇〇〇〇〇〇〇〇last processing temperature (°C) rH LO VD VO ai a rH m 〇〇lo \s&gt VD (N VD 〇00 if) (N CO 〇ro 00 00 σ\ VD inch r- r- VO 00 VD VD 卜r- 卜 (N r- mm ^ cheek P SS a m-700-811 I 755- 929 I 754-911 I 1 818-930 I 845-901 711-804 I 864-909 670-812 I 721-829 791-887 I 815-1024 810-906 698-928 774-911 719-910 i 764- 845 757-842 1 772-850 Heating temperature (eC) 〇CO sl s 00 s CO o S oo CD om 00 oo 00 o 03 CO oo σ\ 1050 ooc\ l\ oo 00 oo 00 om 00 o rn 00 if) VD CD Completion size φ 20 I φ 20 | φ 20 | I Ψ20 I 1 (/)20 I 丨.(/)50 I φ50 1 (/)20 丨φ20 I Φ20 I 1 (/)20 1 妒50 φ20 φ 20 ! φ20 φ50 ψ 20 φ 20 Material rH o < A01 | A01 | L A01 1 LA01 1 1 A01 1 rH 〇< 1 A01 1 1 A01 1 (N 〇< CN < A02 A〇1 A01 ! A01 rH o < A01 rH o < Roll condition 1 601 1 | B02 | mo ffl O CQ 1 B05 1 KD 〇PQ 1 607 1 CD om 1 B09 I | A B10 I 1 B11 1 rS CQ ro iH CQ Inch rH CQ B15 1 B16 B17 ]B18 Η_—t

C:\2D-CODE\91-O5\91103561.ptd Page 18 007443 2006 0 2 MAY Year Month_Revision Replacement Page 1293987 _Case No. 91103561 V. Description of Invention (15) Table 3

: Roll condition: B01 Ring groove number cross section area (mm2) Rolling reduction amount (%) 0.167/S (second) Time between ring grooves (seconds) Roll speed (m/sec) Temperature "C> Rolling equipment 15625 1 13000 16.8 19.0 25 2.7 7 90 R 2 11000 15.4 17.5 25 2.7 796 R 3 9500 13.6 16.3 25 2.7 801 R 4 8000 15.8 14.9 25 2.7 803 R 5 6500 18.8 13.5 25 2.1 811 R 6 5200 20.0 12.0 25 2.7 801 R 7 4150 20.2 10.8 25 2.7 ΊΊ9 R 8 3300 20.5 9.6 25 2.7 761 R 9 2450 25.8 8.3 25 2.7 738 R 10 1850 24.5 7.2 25 2.7 719 R 11 1450 21.6 6.4 5 0.350 721 T 12 1150 20.7 5.7 5 0.466 732 T 13 900 21.7 5.0 5 0.581 7 39 T 14 700 22.2 4.4 5 0.733 74B T 15 550 21.4 3.9 5 0.871 741 T 16 420 23.6 3.4 5 0.982 730 T 1Ί 320 23.8 1.125 714 T _Xin _ 匕\Total file\91\91103561\91103561 (replacement)- 3.ptc page 19

1293987 2006 0 2 MAY _ Case No. 91103561_Yearly 曰 Correction#Change page V. Invention description (16) Table 4

Roll conditions: BO 2 ring groove number cross section (mm2) Rolling capacity (%) 0.167/5 (seconds) Time between rings (seconds) Roll speed (in"less) Temperature (°C) Rolling equipment 15625 1 13000 16.8 19.0 25 2.7 929 R 2 11000 15.4 17.5 25 2.7 925 R 3 9500 13 . 6 16.3 25 2.7 919 R 4 8000 15.8 14.9 25 2.7 913 R 5 6500 18.8 13.5 25 2.7 911 R 6 5200 20.0 12.0 25 2.7 900 R 7 4150 20.2 10.8 25 2.7 891 R 8 3300 20.5 9.6 25 2.7 880 R 9 2450 25.8 8.3 25 2.1 868 R 10 1850 24.5 7.2 25 2.7 860 R 11 1450 21.6 6.4 5 0.350 852 T 12 1150 20.7 5.7 5 0.466 839 T 13 900 21.7 5.0 5 0.581 829 T 14 700 22.2 4.4 5 0.733 822 T 15 550 21.4 3.9 5 0.871 803 T 16 420 23.6 3.4 5 0.982 785 T 17 320 23 . 8 1.125 765 T

(::\总档\91\91103561\91103561 (replace)-3.ptc Page 20 2006 〇 2 MAY 曰 _ correction replacement page 1293987 _ case number 9Π03561 V. Invention description (17) Table 5

Roll conditions: B03 Ring groove number section (mm2) Rolling amount (%) 0 . ISlyiS (seconds) Time between rings (seconds) Roll speed (m/sec) Temperature (°C) Rolling equipment 15625 1 13000 16.8 19.0 25 2.7 890 R 2 11000 15.4 17.5 25 2.7 894 R 3 9500 13.6 16.3 25 2.1 899 R 4 8000 15.8 14.9 25 2.7 906 R 5 6500 18.8 13.5 25 2.7 911 R 6 5200 20.0 12.0 25 2.7 902 R 7 4150 20.2 10.8 25 2.7 889 R 8 3300 20.5 9.6 25 2.7 881 R 9 2450 25.8 8.3 25 2.7 867 R 10 1850 24.5 7.2 25 2.7 860 R 11 1450 21.6 6.4 5 0.350 852 T 12 1150 20.7 5.7 5 0.466 839 T 13 900 21.7 5.0 5 0.581 830 T 14 700 22.2 4.4 5 0.733 820 T 15 550 21.4 3 . 9 5 0.871 803 T 16 420 23.6 3.4 5 0.982 784 T 17 320 23.8 1.125 764 TC:\Total file\91\91103561\91103561 (replacement)-3.ptc Page 21

1293987 f6J 2/AY _ case number 91103561_year month 朁 correction 朁 page change 5, invention description (18) table 6

Roll conditions: BO 4 ring groove number cross section (mm2) Car L shrinkage (%) 0.167^8 (seconds) Time between rings (seconds) Roll speed (m/s) Temperature (°C) Rolling equipment 15625 1 。 。 。 。 。 。 。 。 。 。 。 。 。 。 400 39.4 10.8 25 2.7 930 R 8 320 20.0 2.7 919 R

匸:\总档\91\91103561\91103561 (replacement)-3.ptc Page 22 1293987 Jane 6 贿 Bribe _ Case No. 91103561_Year S Correction Page 5. Invention Description (19) Table 7

Roll conditions: B0 5 Ring groove number cross section (mm2), rolling reduction (%> 0 · 16 7/~S (seconds) Time between rings (seconds) Roll speed (m/sec) Temperature (°C) Rolling equipment 15625 1 13000 16.8 19.0 10 2.7 791 R 2 11000 15.4 17.5 10 2 . 7 805 R 3 9500 13.6 16 . 3 10 2.7 819 R 4 8000 15.8 14 . 9 10 2.7 836 R 5 6500 18.8 13.5 10 2.7 850 R 6 5200 20.0 12.0 10 2.7 865 R 7 4150 20.2 10.8 10 2.7 871 R 8 3300 20.5 9.6 10 2.7 8 75 R 9 2450 25.8 8.3 10 2.7 87 9 R 10 1850 24.5 Ί .2 10 2.7 884 R 11 1450 21.6 6.4 5 0.350 901 T 12 1150 20.7 5.7 5 0.466 899 T 13 900 21.7 5.0 5 0.581 895 T 14 7 00 22.2 4.4 5 0.733 895 T 15 550 21.4 3 . 9 5 0.871 883 T 16 420 23.6 3.4 5 0.982 875 T 17 320 23 .8 1.125 860 T

匕\总档\91\9] 103561\91103561 (replace)-3.ptc Page 23 2006 〇 2 MAY 曰 _ Correction Replacement page 1293987 _ Case number 9Π03561 V. Invention description (20) Table 8

Roll condition: B06 Ring groove number cross section area (mm2) 1 Shrinkage (%) 0.167/"S (seconds) Time between rings (seconds) Roll speed (m/s) Temperature (°C) Rolling equipment 15625 1 13000 16 . 8 19.0 25 2.7 791 R 2 11000 15.4 17.5 25 2.7 7 96 R 3 9500 13.6 16.3 25 2.7 801 R 4 8000 15.8 14.9 25 2.7 804 R 5 6700 16.3 13.7 25 2.1 806 R 6 6000 10 . 5 12.9 25 2.7 784 R 7 5200 13 . 3 12.0 25 2.7 764 R 8 4650 10.6 11.4 25 2.7 746 R 9 3800 18.3 10.3 25 2.7 733 R 10 3100 18.4 9.3 5 0.622 733 T 11 2600 16.1 8.5 5 0.837 734 T 12 2210 15.0 1.125 731 T匕\Total file\91\91 103561\91103561 (replace)-3.ptc Page 24

1293987 2006 0 2 MAY _ Case No. 91103561_Year Month S Correction Replacement Page V. Invention Description (21) Table 9 Roll Conditions: B0 7 Ring Groove Cross Section Area (mm2) Rolling Reduction (%) 0.167/"S ( Second) Time between rings (seconds) Roll speed (m/s) Temperature (°C) Rolling equipment 15625 1 13000 16.8 19.0 10 2.7 819 R 2 11000 15.4 17.5 10 2.7 836 R 3 9500 13.6 16.3 10 2.7 849 R 4 8000 15.8 14.9 10 2.7 8 73 R 5 6700 16.3 13.7 10 2 . 7 87 9 R 6 6000 10.5 12.9 10 2.7 896 R 7 5200 13.3 12.0 10 2.7 901 R 8 4650 10.6 11.4 10 2.7 904 R 9 3800 18 . 3 10.3 5 2.7 909 R 10 3100 18.4 9.3 5 0.622 902 Τ 11 2600 16.1 8.5 5 0.837 883 Τ 12 2210 15 . 〇 1.125 874 Τ

. \总档\91\91 103561 \91103561 (replace)-3.ptc Page 25 1293987 Case No. 91103561 曰 20(36 〇 2 ΜΑ'] Correction replacement page V. Invention description (22) Table 10

Roll conditions: B0 8 Ring groove number cross section (mm2) Rolling amount (%) 0 . ISlyfS (second) Time between rings (seconds) Roll speed (m/sec) Temperature (°C) Rolling equipment 15625 1 13000 16 . 1 1 1 1 1 1 1 1 1 1 1 4150 20.2 10.8 25 2.7 780 R 8 3300 20.5 9.6 25 2.7 759 R 9 2450 25.8 8.3 25 2.7 741 R 10 1850 24.5 7.2 25 2.7 720 R 11 1450 21.6 6.4 10 0.350 719 T 12 1150 20.7 5.7 10 0.466 • 724 T 13 900 21.7 5.0 10 0.581 730 T 14 700 22.2 4.4 10 0.733 729 T 15 550 21.4 3.9 10 0.871 721 T 16 420 23.6 3.4 10 0.982 705 T 17 320 23.8 1.125 690 T 匕\Total file\9] \91 103561 \91103561 (Replace )-3·ptc page 26

1293987 · 2006 Ο 2 MAY _ Case No. 91103561_ Year Month Day Correction Replacement Page 5. Invention Description (23) Table 11

Roll conditions: BO 9 ring groove number cross section (mm2) Rolling capacity (%) 0.167/"S (seconds) Time between rings (seconds) Roll speed (m/sec) Temperature (°C) Rolling equipment 15625 1 13000 16.8 19.0 25 2.7 810 R 2 11000 15.4 17.5 25 2.7 816 R 3 9500 13 . 6 16.3 25 2.7 821 R 4 8000 15.8 14.9 25 2.7 824 R 5 6500 18 . 8 13.5 25 2.7 829 R 6 5200 20.0 12.0 25 2.7 821 R 7 4150 20.2 10.8 25 2.7 800 R 8 3300 20.5 9.6 25 2.7 779 R 9 2450 25.8 8.3 25 2.7 761. R 10 1850 24.5 7.2 25 2.7 749 R 11 1450 21.6 6.4 5 0.350 741 T 12 1150 20.7 5.7 5 0.466 7 51 T 13 900 21.7 5.0 5 0.581 7 60 T 14 7 00 22.2 4.4 5 0.733 766 T 15 550 21.4 3.9 5 0.871 761 T 16 420 23.6 3.4 5 0.982 751 T 17 320 23.8 1.125 726 T Page 27 C :\ 总\91\91 103561 \91103561 (replace)-3. ptc

1293987 2006 0 2 MAY _ Case No. 91103561_年月曰 Correction Replacement Page 5. Invention Description (24) Table 12

Roll conditions: B10 Ring groove number cross section (mm2) Rolling capacity (%) 0.167/~S (seconds) Time between rings (seconds) Roll speed (m/sec) Temperature (°C) Rolling equipment 15625 1 13000 16.8 19.0 25 2.7 886 R 2 11000 15.4 17.5 25 2.7 8 84 R 3 9500 13.6 16.3 25 2.7 884 R 4 8000 15.8 14.9 25 2.1 887 R 5 6500 18.8 13.5 25 2.7 885 R 6 5200 20.0 12.0 25 2.7 859 R 7 4150 20.2 10.8 25 2.7 841 R 8 3300 20.5 9.6 25 2.7 820 R 9 2450 25.8 8.3 25 2.7 800 R 10 1850 24.5 7.2 25 2.7 791 R 11 1450 21.6 6.4 5 0.350 801 T 12 1150 20.7 5.7 5 0.466 810 T 13 900 21.7 5.0 5 0.581 830 T 14 7 00 22.2 4.4 5 0.733 836 T 15 550 21.4 3.9 5 0.871 829 T 16 420 23.6 3.4 5 0.982 821 T 17 320 23.8 1.125 806 T

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I

Roll condition: B11 Ring groove number cross section (mm2) Rolling amount (%) 0.167/"S (second) Time between rings (seconds) Roll speed (m/sec) Temperature (°C) Rolling equipment 15625 1 13000 16.8 19.0 25 2.7 1024 R 2 11000 15.4 17.5 25 2.7 1015 R 3 9500 13.6 16.3 25 2.7 1003 R 4 8000 15.8 14.9 25 2.1 996 R 5 6500 18.8 13.5 25 2.7 985 R 6 5200 20.0 12.0 25 2.7 969 R 7 4150 20.2 10.8 25 2.7 961 R 8 3300 20.5 9.6 25 2.7 949 R 9 2450 25.8 8.3 25 2.7 930 R 10 1850 24.5 7.2 25 2.7 921 R 11 1450 21.6 6.4 5 0.350 911 T 12 1150 20.7 5.7 5 0.466 901 T 13 900 21.7 5.0 5 0.581 891 T 14 7 00 22.2 4.4 5 0.733 881 T 15 550 21.4 3 . 9 5 0.871 864 T 16 420 23.6 3.4 5 0.982 845 T 17 320 23.8 1.125 825 TC:\Total file\91\91 103561 \91103561 (replacement) -3.ptc Page 29 1293987 2006 〇2 may _Case No. 91103561_ Year Month 曰 Correction Replacement Page V. Invention Description (26) Table 1 4

Roll condition: B12 ring groove number section (mm2) Rolling amount (%) 0 . 167/~S (seconds) Time between rings (seconds) Roll speed (m/s) Temperature (°C) Rolling equipment 15625 1 13000 16.8 19.0 25 2.7 891 R 2 11000 15.4 17.5 25 2.7 895 R 3 9500 13.6 16.3 25 2.7 899 R 4 8000 15.8 14.9 25 2.7 905 R 5 6700 16.3 13.7 25 2.7 906 R 6 6000 10.5 12.9 25 2.1 886 R 7 5200 13.3 12.0 25 2.7 865 R 8 4650 10.6 11.4 25 2.7 845 R 9 3800 18.3 10.3 25 2.7 836 R 10 3100 18.4 9.3 5 0.622 835 T 11 2600 16.1 8.5 5 0.837 834 T 12 2210 15.0 1.125 830 T

C:\Total file\91\91 103561 \91103561 (replace)-3.ptc Page 30 1293987 Case number 91103561 曰 2006 0 2 rw correction Replacement page V. Invention description (27) Table 15

Roll conditions: B13 Ring groove number cross section (mm2) Rolling capacity (%) 0.167/~S (seconds) Time between rings (seconds) Roll speed (τη/sec) Temperature (°C) Rolling equipment 15625 1 13000 16 . 8 19.0 25 2.7 929 R 2 11000 15.4 17.5 25 2.7 925 R 3 9500 13.6 16.3 25 2.7 919 R 4 8000 15.8 14.9 25 2.7 913 R 5 6500 18.8 13 . 5 25 2.7 911 R 6 5200 20.0 12.0 25 2.7 900 R 7 4150 20.2 10.8 25 2.7 891 R 8 3300 20.5 9.6 25 2.7 880 R 9 2450 25.8 8.3 25 2.7 868 R 10 1850 24.5 7.2 25 2.7 850 R 11 1450 21.6 6.4 10 0.350 832 Τ 12 1150 20.7 5.7 10 0.466 804 Τ 13 900 21.7 5.0 10 0.581 777 Τ 14 700 22.2 4.4 10 0.733 749 Τ 15 550 21.4 3.9 10 0.871 728 Τ 16 420 23.6 3.4 10 0.982 713 Τ 17 320 23.8 1.125 698 Τ 匕\Total file\91\91103561\91103561 (replacement)- 3.ptc page 31

1293987 · 2006 0 2 MAY _ Case No. 91103561_Yearly 曰 Correct replacement page V. Invention description (28) Table 16

Roll conditions: B14 Ring groove number cross section (mm2) Rolling capacity (%) 0.167/~S (seconds) Time between rings (seconds) Roll speed (m/sec) Temperature (°C) Rolling equipment 15625 1 13000 16.8 19.0 25 10.8 810 R 2 11000 15.4 17.5 25 10.8 836 R 3 9500 13.6 16.3 25 10.8 861 R 4 8000 15.8 14.9 25 10.8 883 R 5 6500 18.8 13.5 25 10.8 911 R 6 5200 20.0 12.0 25 10.8 901 R 7 4150 20.2 10.8 25 10.8 869 R 8 3300 20.5 9.6 25 1.8 841 R 9 2450 25.8 8.3 25 10.8 808 R 10 1850 24.5 7.2 25 10.8 779 R 11 1450 21.6 6.4 10 0.350 781 T 12 1150 20.7 5.7 10 0.466 792 T 13 900 21.7 5.0 10 0.581 799 T 14 700 22.2 4.4 10 0.733 805 T 15 550 21.4 3.9 10 0.871 801 T 16 420 23.6 3.4 10 0.982 790 T 17 320 23.8 1.125 774 T

(::\总档\91\91丨03561\91103561 (replace)-3.ptc page 32 2006 0 2 MAY year 曰 _ correction replacement page 1293987 _ case number 91103561 V. Invention description (29) Table 17

Roll conditions: B15 ring groove number cross section (mm2) Rolling amount (%) 0 . S (second) Time between rings (seconds) Roll speed (m / sec · temperature (°C) Rolling equipment 15625 1 13000 16.8 19.0 25 2.7 ^ 790- R 2 11000 15.4 17.5 25 2.7 7 96 R 3 9500 13.6 16.3 25 2.7 801 R 4 8000 15.8 14.9 25 2.7 803 R 5 6500 18.8 13.5 25 2.7 811 R 6 5200 20.0 12.0 25 2.7 801 R 7 4150 20.2 10.8 25 2.7 779 R 8 3300 20.5 9.6 25 2.7 761 R 9 2450 25.8 8.3 25 2.7 7 38 R 10 1850 24.5 7.2 25 2.7 719 R 11 1450 21.6 6.4 5 0.700 7 51 Τ 12 1150 20.7 5.7 5 0.932 782 Τ 13 900 21.7 5.0 5 1.162 829 Τ 14 700 22.2 4.4 5 1.466 865 Τ 15 550 21.4. 3.9 5 1.742 891 Τ 16 420 23.6 3.4 5 1.964 910 Τ 17 320 23.8 2.50 ΰ 864 。.\Total file\91\91103561 \91103561( Replace)-3.ptc Page 33 1293987 2006 〇2 may _ Case No. 91103561_ Year Month 曰 Correction Replacement Page V. Invention Description (30) Table 18

Roll conditions: B16 ring groove number cross section (mm2) Car L shrinkage (%) 0 · 16 7/~S (seconds) Time between rings (seconds) Roll speed (m/sec) Temperature (°C) Roll Equipment 15625 1 13000 16.8 19.0 25 2.7 821 R 2 11000 15.4 17.5 25 2.7 817 R 3 9500 13.6 16.3 25 2.7 834 R 4 8000 15.8 14.9 25 2.7 838 R 5 6700 16.3 13.7 25 2.7 845 R 6 6000 10.5 12.9 25 2.7 824 R 7 5200 13.3 12.0 25 2.7 794 R 8 4650 10.6 11.4 25 2.7 776 R 9 3800 18.3 10.3 25 2.7 7 67 R 10 3100 18.4 9.3 5 0.622 764 T 11 2600 16.1 8.5 5 0.837 769 T 12 2210 15 . 〇 1.125 766 T

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Roll conditions: B17 Ring groove number cross section (mm2) Rolling capacity (%) 0.167/S (seconds) Time between rings (seconds) Roll speed (m/s) Temperature (°C) Rolling equipment 15625 1 13000 16.8 19.0 25 2.1 822 R 2 11000 15.4 17.5 25 2 . 7 825 R 3 9500 13.6 16.3 25 2.7 833 R 4 8000 15.8 14.9 25 2.7 834 R 5 6500 18.8 13.5 25 2.7 842 R 6 5200 20.0 12.0 25 2.7 830 R 7 4150 20.2 10.8 25 2.7 809 R 8 3300 20.5 9.6 25 2.7 790 R 9 2450 25.8 8.3 25 2.7 765 R 10 1850 24.5 7.2 25 2.7 757 R 11 1450 21.6 6.4 5 0.350 759 T 12 1150 20.7 5.7 5 0.466 772 T 13 900 21.7 5.0 5 0.581 771 T 14 700 22.2 4.4 5 0.733 7 74 T 15 550 21.4 3.9 5 0.871 771 T 16 420 23.6 3.4 5 0.982 779 T 17 320 23.8 1.125 777 T 匸:\Total file\91\91103561\91 103561 (replacement)- 3.ptc Page 35 1293987 Case No. 91103561 Λ_Ά 2006 0 2 MAY Correction Replacement Gong 5, Invention Description (32) Table 20

Roll conditions: B1 8 Ring groove number cross section (mm2) Rolling capacity (%) 0.16 7/*S (seconds) Time between rings (seconds) Roll speed (m/sec) Temperature (°C) Rolling equipment 15625 1 13000 16.8 19.0 25 2.7 850 R 2 11000 15.4 17.5 25 2.7 847 R 3 9500 13.6 16.3 25 2.7 847 R 4 8000 15.8 14.9 25 2.7 845 R 5 6500 18.8 13.5 25 2.7 844 R 6 5200 20.0 12.0 25 2.7 845 R 7 4150 20.2 10.8 25 2.7 843 R 8 3300 20.5 9.6 25 2.7 834 R 9 2450 25.8 8.3 25 2.7 830 R 10 1850 24.5 7.2 25 2.7 829 R 11 1450 21.6 6.4 5 0.350 821 T 12 1150 20.7 5.7 5 0.466 814 T 13 900 21.7 5.0 5 0.581 803 T 14 700 22.2 4.4 5 0.733 794 T 15 550 21.4 3 . 9 5 0.871 790 T 16 420 23.6 3.4 5 0.982 782 T 17 320 23.8 1.125 772 T

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Claims (1)

Fu 91103561 年年.2006 2006 8 8 DEC Replacement 1 · An α + call-type titanium alloy bar - OT-, J is characterized by the following steps, which will be substantially measured by mass % A1 : 4% or more and 5 % or less; V: 2. 5% or more and 3.5% or less; Fe: 1.5% or more and 2.5% or less; Mo: 1.5% or more and 2.5% or less; and the rest: Ti consists of a metamorphosis point a step of heating the α + 10,000-type titanium alloy of τ C, in such a manner that the surface temperature becomes (τ 泠 15 〇) cc or more and the range of the point C or less; The above-mentioned heated α + stone type titanium alloy is used as a roll ring in the range of (Τ 3 00 ) °c or more and (Τ /3-50) t or less in the surface temperature of the rolled roll material in the roll The step of performing hot rolling so that the final processed surface temperature of the surface temperature immediately after completion of the groove is in the range of (T valley - 300 ) ° c or more and (τ / 3 - 100 ° ° C or less); The reverse type rolling mill is formed by hot rolling at a roll width of 6 m/sec or less; in the hot rolling step, the roll having a direction perpendicular to the roll direction is 350 (W or more is rolled by the roll material) When the cross-sectional area is set to Smm2, the time until the start of the next minute is set to 0. 1 6 7 X S1/2 seconds or more. The + / 3 type titanium is combined in the following steps, and is substantially expressed by mass % of A1 · 4. 丄 · 4 / 〇 or more and 5% or less; V : 2 · 5 % or more and 3.5% or less; 1 ^: 1, 5 % is on the day 99/, U θ0 co/ _ ^ GM and below 2.5%; Mo: 1·5% or more and 2.5% or less; and the rest of the eight·Τι· % Worker ν η , everyone's knives · Tl constitutes the metamorphic point of the 之 call C α + y? type of titanium alloy, in order to watch, w洚 占 占, the degree of the dish becomes (T call -150) ° Above C 1293987 a step of heating in a range of τ point c or less; and heating the α + stone-type titanium alloy to a surface temperature of the rolled material in the roll (Τ-300). (: The above and (in the following range 'and the final machined surface of the surface temperature immediately after completion of the ring groove is 'T /5 - 300) C or more (T stone -1 〇〇) or less a method of performing a hot rolling step; the hot rolling is performed by using a tandem rolling mill at a roll speed of 1 · 5 m / sec or less; in the hot rolling step, the pair has a direction with respect to the roll When the roll material having a wear area of 3,500 mm 2 or more in the vertical direction is rolled and the cross-sectional area is Smm2, the time until the start of the next roll is set to 〇·1 67 X S1/2 seconds or more. In the method of producing α/call-type titanium alloy rod of the first or second aspect, in the hot rolling step, the rolling reduction per one ring groove is set to 40% or less. The method for producing an α + call-type titanium alloy rod according to claim 1 or 2, wherein in the hot rolling step, the rolled material is reheated in a roll.