JPH0723525B2 - Method for manufacturing Ti thin plate - Google Patents
Method for manufacturing Ti thin plateInfo
- Publication number
- JPH0723525B2 JPH0723525B2 JP63026804A JP2680488A JPH0723525B2 JP H0723525 B2 JPH0723525 B2 JP H0723525B2 JP 63026804 A JP63026804 A JP 63026804A JP 2680488 A JP2680488 A JP 2680488A JP H0723525 B2 JPH0723525 B2 JP H0723525B2
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- JP
- Japan
- Prior art keywords
- plate
- oil
- rolling
- pipe
- saponification value
- 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.)
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Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は加工用Ti薄板の製造方法に関するものであっ
て、詳細には二次加工の際にTi薄板表面に疵がつき難く
耐疵付性の優れたTi薄板を製造する方法に関するもので
ある。TECHNICAL FIELD The present invention relates to a method for manufacturing a Ti thin plate for processing, and in particular, it is difficult for the surface of the Ti thin plate to be scratched during secondary processing and is scratch resistant. The present invention relates to a method for producing a Ti thin plate having excellent properties.
尚本明細書においてはTi薄板の二次加工品として、例え
ば熱交換器のコンデンサーとして用いられる管を例に挙
げて説明を進めるが、本発明のTi薄板の用途はこの様な
管製造用素材としての利用に限定されるものではない。In the present specification, as the secondary processed product of the Ti thin plate, for example, a tube used as a condenser of a heat exchanger will be described as an example, but the Ti thin plate of the present invention is used as a material for manufacturing such a tube. Is not limited to the use as.
［従来の技術］ 加工用Ti薄板（以下単にTi板ということがある）は、二
次加工製品の表面精度を問題にすることが多く、その為
Ti板は表面の耐疵付性に関して厳しい要求特性を満たす
ことが必要とされる。従ってこの様な耐疵付性Ti板を製
造する場合には、Ti材の圧延に際してロール粗度の非常
に細かいブライトロールを用いて圧延した後脱脂・洗浄
を行なって表面の油分や汚れを完全に除去し、次いで真
空又は不活性ガス雰囲気下600〜800℃で焼鈍を行なう方
法が一般に採用され、このことによってようやく表面の
滑らかなTi板が得られていた。この様にして得られたTi
板は加工目的に応じた所望幅のフープにスリットされて
二次加工されることとなる。例えば熱交換器のコンデン
サーチューブを製造する場合は、ロール成形方式等の造
管ラインによって成形と溶接々合が行なわれて製品とな
る。この場合における溶接はTIG溶接が一般的である
が、薄板Ti管の溶接を効率よく行なうにはTi表面に水分
や汚れが全く存在しないことが必要である。この為造管
に際しては従来潤滑剤を全く使用することなく完全ドラ
イの条件で行なわれていた。しかしながら潤滑剤なしに
ロール成形を行なったときは表面に疵がつき易く、造管
疵が簡単に発生してしまう。このため成形ロールとして
は通常の鉄ロールを使用せず、特殊な銅合金ロールや
ふっ素樹脂コーティングロールを使用するとか、局部
的な型当たりが生じない様に成形ロールの形状を工夫す
るとか、或は成形ロールスタンド間でTi板に与える歪
が極端に変化しない様にパスラインを調整する等の試み
がなされていた。[Prior Art] For processing Ti thin plates (hereinafter sometimes simply referred to as Ti plates), the surface accuracy of the secondary processed products often poses a problem.
Ti plate is required to meet strict requirements regarding surface scratch resistance. Therefore, when manufacturing such a scratch-resistant Ti plate, when rolling Ti material using a bright roll with very fine roll roughness, degreasing and cleaning are performed to completely remove oil and dirt on the surface. After that, a method of performing annealing at 600 to 800 ° C. in a vacuum or an inert gas atmosphere is generally adopted, and finally, a Ti plate having a smooth surface was obtained. Ti obtained in this way
The plate is subjected to secondary processing by slitting it into a hoop of a desired width according to the processing purpose. For example, when a condenser tube for a heat exchanger is manufactured, molding and welding are performed by a pipe forming line such as a roll forming method to obtain a product. The welding in this case is generally TIG welding, but it is necessary for the Ti surface to be completely free of water and dirt in order to perform efficient welding of thin Ti pipes. For this reason, pipe making has conventionally been performed under completely dry conditions without using any lubricant. However, when roll forming is carried out without using a lubricant, the surface is likely to have a flaw, and a pipe-forming flaw easily occurs. Therefore, instead of using a normal iron roll as a forming roll, use a special copper alloy roll or a fluororesin coating roll, or devise the shape of the forming roll so that local mold contact does not occur, or Attempts have been made to adjust the pass line so that the strain applied to the Ti plate between the forming roll stands does not change extremely.
［発明が解決しようとする課題］ しかしながらTiは本来非常に活性な金属であって、金属
摩擦を加えると簡単に焼付が発生して表面に疵がつく。
このため上記の様なロール材質の変換や加工方法の工夫
等では疵付を防止することができず、またロール等の設
備費用が増大して製品価格が上昇するという問題があっ
た。本発明はこの様な状況に鑑みてなされたものであっ
て、造管等の二次加工に際し耐造管疵付性が優れ、二次
加工費の増大も抑制することができる加工用Ti薄板の製
造方法を提供しようとするものである。[Problems to be Solved by the Invention] However, Ti is an extremely active metal by nature, and when metal friction is applied, seizure easily occurs and the surface is flawed.
For this reason, there is a problem that the flaw cannot be prevented by changing the roll material or devising the processing method as described above, and the equipment cost of the roll or the like increases and the product price rises. The present invention has been made in view of such a situation, excellent in pipe-forming flaw resistance during secondary processing such as pipe forming, and capable of suppressing an increase in secondary processing cost It is intended to provide a manufacturing method.
［課題を解決する為の手段］ 本発明はケン化価が170mg・KOH/g以下の圧延油を用いて
Ti材の冷間圧延を行ない、得られたTi薄板を、表面の油
分付着量が10mg/mm2以上の条件下に非酸化性雰囲気で焼
鈍することを要旨とするものである。[Means for Solving the Problems] The present invention uses a rolling oil having a saponification value of 170 mg · KOH / g or less.
The gist of the invention is to perform cold rolling of a Ti material and anneal the obtained Ti thin plate in a non-oxidizing atmosphere under the condition that the amount of oil adhered to the surface is 10 mg / mm 2 or more.
［作用］ 本発明者等は造管加工等のTi板二次加工における耐疵付
性の向上をはかることを目的として種々研究・検討を行
なった。その結果、滑らかで疵のないTi板を得る為に、
従来は圧延後アルカリ脱脂，トリクレン脱脂等により完
全除去していた圧延油を一部残存させたままで焼鈍すれ
ば、Ti板表面に薄い表面硬化層が形成されることを知見
した。そこでこの表面硬化層の組成を検討した。[Operation] The present inventors conducted various studies and studies for the purpose of improving the scratch resistance in secondary processing of Ti plate such as pipe forming. As a result, in order to obtain a smooth and flawless Ti plate,
We have found that a thin surface hardened layer is formed on the surface of a Ti plate by annealing with rolling oil left partially removed by alkali degreasing or trichlene degreasing after rolling. Therefore, the composition of this surface hardened layer was examined.
第５図は耐焼付荷重と表面濃縮元素との関係を示す。図
から明らかな様に耐疵付性の優れたTi板では板表面の炭
素濃度が高いことがわかった。このため表面硬化層がTi
Cであることを予想して赤外分光分析法による表面分析
を行なった。第６図（Ａ）は上記表面硬化層の分析結果
であり、第６図（Ｂ）はTiC粉末の分析結果である。こ
の結果より表面硬化層はTiCを主成分とするものである
ことが推定される。即ちTi材圧延後、圧延油を残存させ
た状態で焼鈍を行なえば、圧延油の熱分解により生じる
活性な炭素原子或は炭化水素とTi板表面の間で反応が起
こり、Ti板表面にTiCの表面硬化層が形成されるものと
思われる。そこでこの様なTiCの表面硬化層を形成する
ことによって耐造管疵付性の向上をはかることはできな
いかと考え、更に実験・研究を重ねたところ、Ti材を潤
滑性の劣る圧延油を用いて冷間圧延すれば良いことを知
見した。即ち圧延油の潤滑性が悪いと、圧延に際して第
１図に部分拡大断面図で示す様にTi板１の表面に多数の
ウロコ状の凹凸２が形成されると共に、Ti板表面には均
質で微細なTi粉末３が大量に生成して圧延油と混合した
状態で付着する。上記の様なTi板表面の凹凸２は、焼鈍
の際のＣ成分との反応界面を広げることとなり、また生
成した上記Ti粉末３は圧延油の熱分解により生成する炭
素と効率良く反応し、その結果Ti板表面にはTiCを主成
分とする強固な表面硬化層が形成される。第２図（Ａ）
はこの様にして形成されたTi板の部分断面図であって、
４は表面硬化層であり、第２図（Ｂ）はTi板表面に凹凸
を形成しない場合のTi板部分断面図である。Ti板表面に
凹凸を形成する場合は、圧延により生成するTi微粉もTi
C生成量の増大に寄与し、Ti板表面に強固な表面硬化層
を形成することとなる。更にTi板表面に凹凸が形成され
ている為、Ti板を成形するに当たって、成形ロールはTi
板表面の硬度の高いミクロな凸部のみと点接触するか
ら、成形ロールとTi板との接触面積が小さくなり、焼付
・疵付のおそれも著しく軽減される。FIG. 5 shows the relationship between the seizure resistance and surface enrichment elements. As is clear from the figure, it was found that the Ti plate, which has excellent scratch resistance, has a high carbon concentration on the plate surface. Therefore, the surface hardened layer is Ti
Assuming that it was C, surface analysis was performed by infrared spectroscopy. FIG. 6 (A) is the analysis result of the surface hardened layer, and FIG. 6 (B) is the analysis result of the TiC powder. From this result, it is estimated that the surface-hardened layer contains TiC as a main component. That is, after rolling the Ti material, if annealing is performed with the rolling oil remaining, a reaction occurs between the active carbon atoms or hydrocarbons generated by the thermal decomposition of the rolling oil and the Ti plate surface, and the TiC surface It is considered that the surface-hardened layer is formed. Therefore, we thought that it would be possible to improve the scratch resistance of pipe making by forming such a surface-hardened layer of TiC, and after further experiments and studies, we used Ti oil with rolling oil with poor lubricity. We have found that cold rolling is all right. That is, if the lubricity of the rolling oil is poor, many scale-like irregularities 2 are formed on the surface of the Ti plate 1 as shown in the partially enlarged cross-sectional view in FIG. A large amount of fine Ti powder 3 is generated and adheres in a state of being mixed with rolling oil. The unevenness 2 on the surface of the Ti plate as described above widens the reaction interface with the C component during annealing, and the generated Ti powder 3 efficiently reacts with carbon generated by the thermal decomposition of rolling oil, As a result, a strong surface hardened layer containing TiC as a main component is formed on the surface of the Ti plate. Figure 2 (A)
Is a partial cross-sectional view of the Ti plate formed in this way,
Reference numeral 4 is a surface-hardened layer, and FIG. 2B is a partial cross-sectional view of the Ti plate when no unevenness is formed on the surface of the Ti plate. When irregularities are formed on the Ti plate surface, Ti fine powder produced by rolling is also
This contributes to an increase in the amount of C produced and forms a strong surface hardened layer on the surface of the Ti plate. Furthermore, since the Ti plate surface has irregularities, the forming roll is made of Ti when forming the Ti plate.
Since only the micro-convex parts with high hardness on the surface of the plate make point contact, the contact area between the forming roll and the Ti plate is reduced, and the risk of seizure / scratch is significantly reduced.
ところで圧延油の潤滑度とケン化価は正の相関関係にあ
る。そこでTi板の二次加工に際して耐疵付性の要求特性
を満足するケン化価と油分付着量の範囲を求めるため
に、圧延油としてケン化価の異なる数種の牛脂系2.5％
エマルジョン油を用いてTi板を製作した。圧延の際の油
分付着量は10mg/m2，パス回数は11回とした。By the way, there is a positive correlation between the rolling oil lubricity and the saponification value. Therefore, in order to determine the saponification value and the range of oil content that satisfy the required characteristics of scratch resistance during secondary processing of Ti plate, several kinds of beef tallow-based 2.5% with different saponification values were used as rolling oil.
A Ti plate was manufactured using emulsion oil. The amount of oil adhered during rolling was 10 mg / m 2 , and the number of passes was 11.
この様にして得たTi板を用いて圧延油のケン化価と、摩
擦試験焼付荷重との関係を調査した。尚試験結果によれ
ば摩擦試験焼付荷重が0.05kg/mm2以上であれば耐疵付性
は良好であることがわかった。調査結果を第３図に示
す。Using the Ti plate thus obtained, the relationship between the saponification value of rolling oil and the friction test baking load was investigated. According to the test results, it was found that the scratch resistance was good when the friction test baking load was 0.05 kg / mm 2 or more. The survey results are shown in FIG.
次に圧延油分の油分付着量とケン化価を種々変化させて
Ti板を製造し、このTi板を用いて熱交換器用コンデンサ
ーチューブを製造してケン化価，油分付着量及び造管疵
付性の関係を調査した。造管疵付性は管外周長さに対す
る管外周方向の疵の長さの割合を疵幅比率として、 但し D:管外径 W:管外周方向の疵の長さ の式で求めた。そしてこの疵幅比率の度合を、第１表に
示す造管疵ランクに分けて製品評価を行なった。評価欄
における◎，○，□，及び×はそれぞれ次のことをあら
わす。Next, by varying the oil adhesion amount and saponification value of the rolling oil,
A Ti plate was manufactured, and a condenser tube for a heat exchanger was manufactured using this Ti plate, and the relationship between the saponification value, the amount of oil adhered and the pipe-forming flaw was investigated. Pipe flaw resistance is the ratio of the length of the flaw in the direction of the outer circumference to the length of the outer circumference of the pipe as the flaw width ratio, However, it was calculated by the formula of D: outer diameter of pipe W: length of flaw in outer peripheral direction of pipe. Then, the degree of the flaw width ratio was divided into the pipe-making flaw ranks shown in Table 1 to perform product evaluation. ◎, ○, □, and × in the evaluation column indicate the following respectively.
◎：きわめて優れている ○：優れている □：良好 ×：不良 尚ランク数が高い程良好であることを示している（第２
表及び第４図も同じ）。⊚: Excellent ∘: Excellent □: Good ×: Poor The higher the rank, the better.
The same applies to the table and FIG. 4).
圧延油のケン化価，油分付着量及び造管疵ランクの関係
の調査結果を第４図に示す。 Figure 4 shows the results of an investigation of the relationship between the saponification value of rolling oil, the amount of oil attached, and the rank of pipe flaws.
第３図及び第４図より、ケン化価及び圧延油の油分付着
量を次の様に決定した。From FIG. 3 and FIG. 4, the saponification value and the amount of oil adhered to the rolling oil were determined as follows.
まずケン化価については、ケン化価が170以下であれ
ば、第３図からも明らかである様に0.05kg/mm2以上の摩
擦試験焼付荷重を常に確保することができ、又第４図か
らも明らかな様に耐疵付性の良好な範囲であるランク３
以上を常に確保できる。この結果、本発明における圧延
油のケン化価は170以下と決定した。けん化価が低いほ
ど耐造管疵付性は向上する。しかし実験の結果ではケン
化価が20より低くなると、圧延ロールへのチタンコーテ
ィングが急激に増大してコーティング剥離が発生し易く
なり圧延荷重も上昇する傾向がでてくる。従って圧延油
のケン化価は20以上であることが好ましい。First, regarding the saponification value, if the saponification value is 170 or less, a friction test baking load of 0.05 kg / mm 2 or more can always be secured, as is clear from FIG. 3, and FIG. As is clear from the above, rank 3 is a range with good scratch resistance.
The above can always be secured. As a result, the saponification value of the rolling oil in the present invention was determined to be 170 or less. The lower the saponification value, the better the resistance to flaws in pipe making. However, as a result of the experiment, when the saponification value is lower than 20, the titanium coating on the rolling roll rapidly increases, the coating peeling easily occurs, and the rolling load tends to increase. Therefore, the saponification value of the rolling oil is preferably 20 or more.
また第４図を見ると、耐造管疵付性を付与するに足る表
面硬化層を形成する為に必要な潤滑油の油分付着量は10
mg/m2以上であることがわかる。耐造管疵付性は油分付
着量に比例して増大する。しかし油分付着量が多すぎる
と、焼鈍炉が汚染され易く、Ti板表面に遊離炭素が残存
し、焼鈍後の着色や溶接不良を生じる等の問題があるの
で50mg/m2以下に抑えることが好ましい。この様な油分
付着量の調整は温水スプレー等による洗浄の程度等をコ
ントロールすることによって行なえばよいが、一旦アル
カリ等による完全脱脂を行なってから潤滑油を所定量再
塗布してもよい。Also, as shown in FIG. 4, the amount of lubricating oil required to form a surface-hardened layer sufficient for imparting pipe flaw resistance is 10%.
It can be seen that it is at least mg / m 2 . Resistance to pipe flaws increases in proportion to the amount of oil attached. However, if the amount of oil adhered is too large, the annealing furnace is easily contaminated, free carbon remains on the Ti plate surface, and there are problems such as coloring and welding failure after annealing, so it should be suppressed to 50 mg / m 2 or less. preferable. Such adjustment of the amount of oil adhered may be performed by controlling the degree of cleaning with warm water spray or the like, but it is also possible to perform complete degreasing with an alkali or the like and then re-apply a predetermined amount of lubricating oil.
以下実施例について説明するが、本発明は下記の実施例
に限定されるものではなく、前・後記の趣旨に徴して適
宜設計変更することは本発明の技術的範囲に含まれる。Examples will be described below, but the present invention is not limited to the following examples, and it is within the technical scope of the present invention to appropriately change the design in view of the gist of the preceding and the following.
［実施例］ 実施例１ Ti材を圧延・焼鈍して得たTi板を用いて熱交換器用コン
デンサーチューブを製造し、造管疵付性の評価を行なっ
た。第２表に製造条件及び評価結果を示す。尚第２表に
おいて圧延油欄のイ，ロ，ハ、焼鈍条件欄のa,b、及び
脱脂条件欄のA,B,C,Dはそれぞれ次の意味をあらわす。[Example] Example 1 A condenser tube for a heat exchanger was manufactured using a Ti plate obtained by rolling and annealing a Ti material, and the pipe-forming flaw property was evaluated. Table 2 shows manufacturing conditions and evaluation results. In Table 2, “a”, “b”, “c” in the rolling oil column, “a”, “b” in the annealing condition column, and “A, B, C, D” in the degreasing condition column have the following meanings.
圧延油； イ…牛脂系・鉱油混合タイプ３％エマルジョン油 ロ…牛脂系３％エマルジョン油 ハ…牛脂系2.5％エマルジョン油 焼鈍条件； ａ…真空焼鈍700℃×５時間 ｂ…真空焼鈍690℃×５時間 脱脂条件； Ａ…温水スプレー洗浄（不完全脱脂） Ｂ…完全アルカリ脱脂後再塗油 Ｃ…圧延まま Ｄ…完全アルカリ脱脂 第２表の結果を以下検討する。Rolling oil: a ... Beef tallow / mineral oil mixed type 3% emulsion oil B ... Beef tallow 3% emulsion oil C ... Beef tallow 2.5% emulsion oil Annealing conditions: a ... Vacuum annealing 700 ° C x 5 hours b ... Vacuum annealing 690 ° C x 5 hours Degreasing conditions; A ... Warm water spray cleaning (incomplete degreasing) B ... Re-oiling after complete alkaline degreasing C ... As rolled D ... Complete alkaline degreasing The results of Table 2 are examined below.
本発明の実施例であるNo.1〜５では、いずれも優れた造
管疵評価が得られ、耐疵付性が極めて良好であった。尚
No.5については温水スプレー洗浄による油分付着量の調
整を行なわなかった為、油分付着量が50mg/m2を超え、
その結果溶接性がやや劣るものであった。一方No.6は圧
延後完全アルカリ脱脂を行なったため、No.7は圧延油の
ケン化価が高すぎたため、更にNo.8及び９は圧延油のケ
ン化価が高すぎてしかも圧延後完全アルカリ脱脂を行な
ったため、いずれも必要な表面硬化層が得られず、良好
な耐疵付性が得られなかった。In Nos. 1 to 5 which are the examples of the present invention, excellent pipe flaw evaluations were obtained, and the flaw resistance was extremely good. still
For No. 5, the amount of oil adhered by hot water spray washing was not adjusted, so the amount of oil adhered exceeded 50 mg / m 2 ,
As a result, the weldability was slightly inferior. On the other hand, No. 6 was subjected to complete alkaline degreasing after rolling, No. 7 had too high a saponification value of rolling oil, and Nos. 8 and 9 had too high a saponification value of rolling oil, and it was completely after rolling. Since alkaline degreasing was performed, the required surface-hardened layer could not be obtained, and good scratch resistance could not be obtained.
［発明の効果］ 本発明方法によれば造管等の二次加工に際し優れた耐疵
付性を示すTi薄板を安価に製造することができる。[Effect of the Invention] According to the method of the present invention, it is possible to inexpensively manufacture a Ti thin plate exhibiting excellent scratch resistance in secondary processing such as pipe forming.
第１図は潤滑性の劣る圧延油を用いて圧延して得られた
Ti薄板の部分拡大断面図、第２図（Ａ），（Ｂ）は表面
硬化層を形成したTi薄板の部分拡大断面図、第３図は圧
延油のケン化価と摩擦試験焼付荷重との関係を示すグラ
フ、第４図は圧延油のケン化価，油分付着量及び造管疵
ランクの関係を示すグラフ、第５図は耐焼付荷重と表面
濃縮元素との関係を示すグラフ、第６図（Ａ），（Ｂ）
は赤外分光分析結果を示す図である。 １……Ti板、２……Ti板表面凹凸 ３……Ti粉末、４……表面硬化層Figure 1 was obtained by rolling with rolling oil with poor lubricity.
Partial enlarged cross-sectional view of the Ti thin plate, FIGS. 2 (A) and (B) are partial enlarged cross-sectional views of the Ti thin plate on which a surface hardened layer is formed, and FIG. 3 is a saponification value of rolling oil and a friction test baking load. Fig. 4 is a graph showing the relationship, Fig. 4 is a graph showing the relationship between the saponification value of rolling oil, the amount of oil adhered and the rank of flaws in pipe making. Fig. 5 is a graph showing the relationship between the seizure resistance load and surface enrichment elements, Fig. 6 Figures (A), (B)
FIG. 4 is a diagram showing the results of infrared spectroscopic analysis. 1 ... Ti plate, 2 ... Ti plate surface irregularities 3 ... Ti powder, 4 ... Surface hardening layer
Claims (1)
いてTi材の冷間圧延を行ない、得られたTi薄板を、表面
の油分付着量が10mg/mm2以上の条件下に非酸化性雰囲気
で焼鈍することを特徴とするTi薄板の製造方法。1. A Ti sheet is cold-rolled using a rolling oil having a saponification value of 170 mg · KOH / g or less, and the obtained Ti thin plate has a surface oil adhesion amount of 10 mg / mm 2 or more. A method for manufacturing a Ti sheet, characterized in that it is annealed under a non-oxidizing atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63026804A JPH0723525B2 (en) | 1988-02-08 | 1988-02-08 | Method for manufacturing Ti thin plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63026804A JPH0723525B2 (en) | 1988-02-08 | 1988-02-08 | Method for manufacturing Ti thin plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01201452A JPH01201452A (en) | 1989-08-14 |
| JPH0723525B2 true JPH0723525B2 (en) | 1995-03-15 |
Family
ID=12203489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63026804A Expired - Fee Related JPH0723525B2 (en) | 1988-02-08 | 1988-02-08 | Method for manufacturing Ti thin plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0723525B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005042799A1 (en) * | 2003-10-23 | 2005-05-12 | Medtronic, Inc. | Methods of producing carbon layers on titanium metal |
| JP2006291362A (en) * | 2006-08-04 | 2006-10-26 | Kobe Steel Ltd | Titanium sheet excellent in press moldability and surface gloss |
| JP6610062B2 (en) * | 2015-07-31 | 2019-11-27 | 日本製鉄株式会社 | Titanium plate |
| DK3467139T3 (en) | 2016-07-08 | 2020-09-21 | Nippon Steel Corp | Titanium plate and process for its manufacture |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60238465A (en) * | 1984-05-11 | 1985-11-27 | Nippon Stainless Steel Co Ltd | Manufacture of bright-annealed titanium and titanium alloy material with superior formability |
-
1988
- 1988-02-08 JP JP63026804A patent/JPH0723525B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01201452A (en) | 1989-08-14 |
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