JPS63259059A - Continuous bright annealing method for titanium coil material - Google Patents

Continuous bright annealing method for titanium coil material

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Publication number
JPS63259059A
JPS63259059A JP9186987A JP9186987A JPS63259059A JP S63259059 A JPS63259059 A JP S63259059A JP 9186987 A JP9186987 A JP 9186987A JP 9186987 A JP9186987 A JP 9186987A JP S63259059 A JPS63259059 A JP S63259059A
Authority
JP
Japan
Prior art keywords
pressure
furnace
coil material
gaseous
furnace body
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
Application number
JP9186987A
Other languages
Japanese (ja)
Inventor
Toshio Kojima
小島 寿男
Kazuyoshi Fujisawa
藤沢 一芳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Stainless Steel Co Ltd
Original Assignee
Nippon Stainless Steel Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Stainless Steel Co Ltd filed Critical Nippon Stainless Steel Co Ltd
Priority to JP9186987A priority Critical patent/JPS63259059A/en
Publication of JPS63259059A publication Critical patent/JPS63259059A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To produce a bright annealed titanium sheet material having high quality without being formed with temper colors, etc., continuously with high efficiency by setting the atmospheric pressure of gaseous N2 atmosphere chambers at the pressure lower than the gaseous Ar atmosphere pressure in a furnace body and higher than the out-of-furnace pressure. CONSTITUTION:The atmospheric pressure of the gaseous N2 atmosphere chambers 11, 11' of the continuous bright annealing furnace body 10 is set higher than the out-of-furnace pressure 10 and the gaseous Ar atmosphere pressure in the furnace body 10 is set slightly higher than the atmospheric pressure of the gaseous N2 atmosphere chambers 11, 11'. The pressure to press a coil 3 to be treated to felt 12 is so regulated that some gaseous N2 is ejected from the felt seal in the inlet side chamber 11 to the outside of the furnace 10. The surface of the coil material 3 is cleaned by the ejection flow of such gaseous N2. The O2 sticking to the coil material 3, is therefore, not carried into the furnace body 10 and the generation of the temper colors is prevented. An infiltration accident of the gaseous N2 into the furnace body 10 is prevented even if the pressure in the chambers 11, 11' increases.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 この発明は、チタンコイル材を連続的に光輝焼鈍する方
法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method of continuously bright annealing titanium coil material.

く背景技術〉 近年、チタン及びチタン合金(ここでは全てチタンと総
称する)製造技術の著しい進歩や各種機器・構造物部材
の性能向上要求の高まりの中で、チタン材の需要は以前
のような航空・宇宙機器や化学設備機器のみならず、医
療機材、建材2日用品等にまで拡がりつつある様相を見
せ始めている。
Background technology> In recent years, with the remarkable progress in manufacturing technology for titanium and titanium alloys (herein all referred to as titanium) and the increasing demand for improved performance of various equipment and structural components, the demand for titanium materials is not as strong as before. It is starting to show signs that it is expanding not only to aerospace equipment and chemical equipment, but also to medical equipment, building materials, and daily necessities.

ところで、チタン材の中でも優れた金属光沢外観を呈す
る光輝焼鈍板材(以下“BA材”と略称する)に対する
需要は一段と大きな伸びを見せているが、それにもかか
わらずチタンBA材の焼鈍には現在もバッチ式焼鈍方式
を採用しているのが現状である。なぜなら、チタンは極
めて活性な金属であるので、そのコイル材を連続焼鈍炉
で焼鈍しようとすると炉の構造上どうしても炉内に侵入
しがちなOzガスに起因する“テンパーカラーの発生”
や“酸化目減り”を防止できず、著しい商品価値の低下
や材料歩留りの低下を招くと言う問題を解決できなかっ
たからである。
By the way, the demand for bright annealed plate material (hereinafter referred to as "BA material"), which exhibits an excellent metallic luster appearance among titanium materials, is showing even greater growth, but despite this, there is currently no technology for annealing titanium BA material. Currently, the batch annealing method is also used. This is because titanium is an extremely active metal, so if you try to anneal its coil material in a continuous annealing furnace, the structure of the furnace will inevitably lead to the occurrence of "temper color" caused by Oz gas that tends to enter the furnace.
This is because it was not possible to prevent "oxidation loss" and to solve the problem of a significant decrease in commercial value and material yield.

く問題点を解決する手段〉 本発明者等は、上述のような観点から、更なる需要増が
見込まれるチタンBA材を高能率で品質安定性良く量産
し得る手段を見出すべく、特にその“焼鈍工程”を品質
や材料歩留りに悪影響を及ぼすことなく連続化する可能
性について研究を行った過程で、第1図に示される如(
、Ar雰囲気とした光輝焼鈍(BA)炉本体1の被処理
コイル材入側及び出側部に大気シール用のN2ガス封入
室2゜2′を設け、これによって炉本体内へ02が侵入
するのを防止しようとの試みを行った。なお、第1図に
おいて、符号3は被処理コイル材を、4はシール材を、
5はトップロールを、6は入側ガイドロールを、そして
7は出側ガイドロールをそれぞれ示す。
Means to Solve the Problems> From the above-mentioned viewpoint, the present inventors have particularly focused on finding a means for mass-producing titanium BA material, whose demand is expected to increase further, with high efficiency and with good quality stability. In the process of researching the possibility of making the annealing process continuous without adversely affecting quality or material yield, we discovered the following (as shown in Figure 1).
, N2 gas-filled chambers 2゜2' for atmospheric sealing are provided at the entrance and exit sides of the coil material to be processed of the bright annealing (BA) furnace body 1 in an Ar atmosphere, thereby allowing 02 to enter the furnace body. An attempt was made to prevent this. In FIG. 1, numeral 3 indicates the coil material to be processed, 4 indicates the sealing material,
5 indicates a top roll, 6 indicates an entry guide roll, and 7 indicates an exit guide roll.

ところが、このような連続焼鈍炉を使用してチタンコイ
ル材の連続光輝焼鈍を行った場合には確かに炉本体のA
r雰囲気中への02侵入は格段に低くなることが認めら
れはしたものの、やはりテンパーカラーの発生を完全に
防止することが出来ないとの事実が明らかとなったので
ある。
However, when continuous bright annealing of titanium coil material is performed using such a continuous annealing furnace, it is true that the A of the furnace body is
Although it was recognized that the intrusion of 02 into the r atmosphere was significantly reduced, it became clear that the occurrence of temper color could not be completely prevented.

そこで、本発明者等は、連続焼鈍炉雰囲気内への02侵
入を防止したにも係わらず発生する上記テンパーカラー
の生成原因を究明すべ(更に研究を続けたところ、[前
記第1図の如き連続焼鈍炉を使用しても被処理チタンコ
イル材にテンパーカラーが生じるのは、焼鈍雰囲気ガス
中に存在する0□ガスに起因するものではなく、極めて
活性なチタンコイル材表面に付着した。2がN2封入室
を通過することによっても除去されず、0□付着のまま
のチタンコイル材が焼鈍炉本体内に持ち来たされて加熱
されることに原因がある」ことが解明されるに至った。
Therefore, the present inventors decided to investigate the cause of the above-mentioned temper color that occurs even though the intrusion of 02 into the continuous annealing furnace atmosphere was prevented. Even when a continuous annealing furnace is used, the temper color that occurs on the titanium coil material to be treated is not due to the 0□ gas present in the annealing atmosphere gas, but rather adheres to the surface of the extremely active titanium coil material.2 It was discovered that the cause was that the titanium coil material remained attached to the annealing furnace and was brought into the annealing furnace body and heated without being removed even when it passed through the N2 sealed chamber. Ta.

しかも、 「このような“付着02の持ち来たし現象”は、前記N
2封入室の通過区間を長(しても完全には防止出来ない
のに対して、N2封入室へコイル材を連続的に導入する
際にその導入口のシール部から適量のN2ガスを炉外へ
噴出させ、これによってコイル材表面を洗うようにする
と、極めて容易にかつ確実に防止することが可能となる
」との知見をも得るに至ったのである。
Moreover, ``this kind of ``adhesion 02 carryover phenomenon'' is caused by the above-mentioned N
2. Even if the passage section of the N2 charging chamber is lengthened, it cannot be completely prevented, but when the coil material is continuously introduced into the N2 charging chamber, an appropriate amount of N2 gas is injected into the furnace from the seal part of the introduction port. They also came to the conclusion that it is possible to prevent this very easily and reliably by ejecting it to the outside and washing the surface of the coil material.

この発明は、上記知見に基づいてなされたものであり、 チタンコイル材の光輝焼鈍に際して、炉本体の被処理コ
イル材入側及び出側部に、コイル材を通過させるための
シール部を介してN2ガス雰囲気室を設けた連続焼鈍炉
を使用すると共に、該N2ガス雰囲気室の雰囲気圧を炉
本体内のArガス雰囲気圧よりも低くかつ炉外圧よりも
高い圧力に設定し、しかも少なくとも被処理コイル材入
側のNtガス雰囲気室においてはコイル材入口シール部
から炉外へN2ガスを噴出させながらコイル材を連続的
に導入し光輝焼鈍することにより、テンパーカラー等の
形成が無い高品質のチタンBA材を連続的に高能率で製
造し得るようにした点、に特徴を有するものである。
This invention was made based on the above knowledge, and when bright annealing a titanium coil material, a seal part for passing the coil material to the inlet side and outlet side of the furnace main body for the coil material to be processed is provided. A continuous annealing furnace equipped with a N2 gas atmosphere chamber is used, and the atmospheric pressure of the N2 gas atmosphere chamber is set to be lower than the Ar gas atmosphere pressure inside the furnace body and higher than the outside pressure of the furnace, and at least In the Nt gas atmosphere chamber on the coil material entry side, the coil material is continuously introduced and brightly annealed while blowing N2 gas out of the furnace from the coil material inlet seal, resulting in high quality products without the formation of temper color etc. The feature is that titanium BA material can be manufactured continuously and with high efficiency.

第2図は、この発明の方法で使用される連続光輝焼鈍炉
の1例を模式化した概略図であり、加熱帯8並びに冷却
帯9を有する光輝焼鈍炉本体10の被処理コイル材(3
)入側部及び出側部に、前記光輝焼鈍炉本体10内のA
rガス雰囲気と炉外雰囲気とを遮断するためのN2ガス
雰囲気室11及び11′が設けられたものを示している
。そして、この連続光輝焼鈍炉は、各区画の被処理コイ
ル材通過口をシールするため該被処理コイル材通過口部
に被処理コイル材を挟むようにフェルト12を配置し、
フェルトバックアツプ材13で一定の挟持圧(被処理コ
イル材へのフェルトの押付は圧)を維持し得るようにな
っている。ここで、前記フェルト12は、随時(間歇的
或いは連続的でも良い)フェルト巻出しロール14から
巻出され、フェルトガイドロール15に案内されてフェ
ルト巻取りロール16に巻取られることで被処理コイル
材3との接触部を更新し、フェルトの摩耗に対処し得る
ように配慮されている。なお、第2図において、符号1
7は一次トップロールヲ、17’は二次トップロールを
示している。
FIG. 2 is a schematic diagram illustrating an example of a continuous bright annealing furnace used in the method of the present invention, in which the coil material to be treated (3
) A in the bright annealing furnace main body 10 on the entry side and the exit side.
The figure shows the one provided with N2 gas atmosphere chambers 11 and 11' for blocking the r gas atmosphere and the atmosphere outside the furnace. In this continuous bright annealing furnace, a felt 12 is arranged to sandwich the coil material to be processed between the coil material passage ports to seal the coil material passage ports in each section.
The felt back-up material 13 makes it possible to maintain a constant clamping pressure (pressure applied to the felt against the coil material to be processed). Here, the felt 12 is unwound from a felt unwinding roll 14 at any time (which may be intermittent or continuous), guided by a felt guide roll 15, and wound around a felt winding roll 16 to form a coil to be processed. The contact area with the material 3 has been updated to prevent wear of the felt. In addition, in Fig. 2, the reference numeral 1
7 indicates a primary top roll, and 17' indicates a secondary top roll.

さて、上記連続光輝焼鈍炉によってチタンコイル材の焼
鈍処理を実施するに際しては、炉外の空気がフェルトシ
ール部を通して炉内に侵入しないよう、N2ガス雰囲気
室11及び11′の雰囲気圧は炉外圧よりも高く設定す
る(llbm )i z O程度が好ましい)。更に、
炉本体10内のArガス雰囲気圧は、N2ガス雰囲気室
11及び11′からN2ガスが侵入して窒化等の不都合
を生じるのを防止するため、N2ガス雰囲気室の雰囲気
圧よりも幾分高く設定する(2(hm HZ O程度が
好ましい)。
Now, when annealing titanium coil material using the continuous bright annealing furnace described above, the atmospheric pressure in the N2 gas atmosphere chambers 11 and 11' is set to the furnace outside pressure so that the air outside the furnace does not enter the furnace through the felt seal part. (It is preferable to set it higher than (llbm) i z O). Furthermore,
The Ar gas atmosphere pressure in the furnace body 10 is somewhat higher than the atmospheric pressure in the N2 gas atmosphere chamber in order to prevent N2 gas from entering from the N2 gas atmosphere chambers 11 and 11' and causing problems such as nitridation. Set (2 (preferably about hm HZ O).

しかも、少なくとも被処理コイル材入側のN2ガス雰囲
気室11においては、被処理コイル材入口のフェルトシ
ール部から炉外へある程度のN2ガス噴出されるように
、被処理コイル材3へのフェルト12の押付は圧を調整
する(押付は圧の調整はフェルトバックアツプ材13に
よって行えば良く、炉本体側のシール部における押付は
圧の177〜l/15程度の押付は圧に調整することで
好ましい範囲のN2ガス噴出流が確保される)。これに
よって、連続光輝焼鈍炉に導入される被処理コイル材3
はその表面が前記N2ガス噴出流で洗浄されることとな
るので、表面に付着している0□が炉本体10内にまで
持ち来たされることがなくなり、テンパーカラーの発生
を安定確実に防止することが可能となる。その上、N2
ガス雰囲気室の圧力が高まって炉本体10内へN2ガス
が侵入すると言った事故を確実に防止することもできる
(この意味からは、被処理コイル材出側のNtガス雰囲
気室11′においてもフェルトの押付は圧を調整し、積
極的に多少のN2ガス流出を図るようにするのが良い)
Moreover, at least in the N2 gas atmosphere chamber 11 on the inlet side of the coil material to be processed, the felt 12 on the coil material to be processed 3 is arranged such that a certain amount of N2 gas is blown out of the furnace from the felt seal portion at the inlet of the coil material to be processed. Adjust the pressure when pressing (the pressure can be adjusted by using the felt back-up material 13, and when pressing at the seal part on the furnace body side, adjust the pressure to about 177 to 1/15 of the pressure). a preferred range of N2 gas jet flow is ensured). As a result, the coil material 3 to be treated is introduced into the continuous bright annealing furnace.
Since the surface of the furnace will be cleaned by the N2 gas jet flow, the 0□ adhering to the surface will not be brought into the furnace body 10, thereby stably and reliably preventing the occurrence of temper color. It becomes possible to prevent this. Besides, N2
It is also possible to reliably prevent an accident in which the pressure in the gas atmosphere chamber increases and N2 gas intrudes into the furnace body 10. It is best to adjust the pressure when pressing the felt and actively try to release some N2 gas.)
.

勿論、上記と同様タイプでN2ガス雰囲気室の無い連続
光輝焼鈍炉を用い、Arガスを直接的に炉外へ噴出させ
ながら焼鈍を実施してもテンパーカラーの発生は防止さ
れるが、この場合には高価なArガスの大量消費を伴う
ことから、到底、工業的に容認で゛きる手段とは言えな
いものである。
Of course, the occurrence of temper color can also be prevented by using a continuous bright annealing furnace of the same type as above but without an N2 gas atmosphere chamber and performing annealing while directly blowing Ar gas out of the furnace, but in this case. Since this method involves the consumption of a large amount of expensive Ar gas, it cannot be said to be an industrially acceptable method.

なお、炉内圧やフェルトの押付は圧の好ましい範囲は上
述した通りであるが、炉内圧(炉本体内圧或いはN2ガ
ス雰囲気室内圧)は、通常、15〜60mmHzO程度
に調整すれば良く、これにより炉外空気の侵入は十分に
防止でき、また炉内各部の内圧、及び炉本体側とN2ガ
ス雰囲気室外側におけるフェルトの押付は圧は次表のよ
うに調整そして、第2図に示したような連続光輝焼鈍炉
を使用し、その炉本体に計ガスを送供して雰囲気圧を2
011IH20に、またN2ガス雰囲気室にN2ガスを
送供して内圧を18mmHzOにそれぞれ維持すると共
に、炉本体側シール部のフェルト押付は圧を0.2kg
/cm”に、N2ガス雰囲気室外側のフェルト押付は圧
を0.02kg/cmgにそれぞれ調整して純チタン冷
延板を連続焼鈍したところ、テンパーカラーの全くない
高品質のチタンBA材が安定して得られることが確認さ
れた。
The preferable range of the pressure inside the furnace and the pressure for pressing the felt is as described above, but the pressure inside the furnace (the pressure inside the furnace body or the pressure inside the N2 gas atmosphere) can usually be adjusted to about 15 to 60 mmHzO. The intrusion of air outside the furnace can be sufficiently prevented, and the internal pressure of each part inside the furnace and the pressure of felt pressing on the furnace body side and outside of the N2 gas atmosphere room are adjusted as shown in the table below, and as shown in Figure 2. A continuous bright annealing furnace is used, and a gauge gas is supplied to the furnace body to reduce the atmospheric pressure to 2.
011IH20 and the N2 gas atmosphere chamber to maintain the internal pressure at 18 mmHzO, and press the felt on the seal part on the furnace body side to reduce the pressure to 0.2 kg.
/cm” and the felt pressure on the outside of the N2 gas atmosphere chamber was adjusted to 0.02kg/cmg, and a pure cold-rolled titanium plate was continuously annealed, resulting in a stable high-quality titanium BA material with no temper color. It was confirmed that it can be obtained by

く効果の総括〉 以上に説明した如く、この発明によれば、バッチ式に比
して格段に作業能率の良い連続処理方式により品質の高
いチタンBA材を安定生産することができ、高品質のチ
タンBA材をコスト安く提供することが可能となるなど
、産業上極めて有用な効果がもたらされるのである。
Summary of Effects> As explained above, according to the present invention, high quality titanium BA material can be stably produced using a continuous processing method that is much more efficient than a batch method. This brings about extremely useful effects industrially, such as making it possible to provide titanium BA material at a low cost.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は、研究の過程で採用された試験用連続光輝焼鈍
炉の概要を示す構成図、 第2図は、本発明の方法において使用される連続光輝焼
鈍炉の1例を示した概略構成図である。 図面において、 1.10・・・光輝焼鈍(B A)炉本体、2.2′・
・・N2ガス封入室、 3・・・被処理コイル材、   4・・・シール材、5
・・・トラ7”o−/I/、5・・・入側ガイドロール
、7・・・出側ガイドロール、  8・・・加熱帯、9
・・・冷却帯、 11.11′・・・N2ガス雰囲気室
、12・・・フェルト、 13・・・フェルトバックアツプ材、 14・・・フェルト巻出しロール、 15・・・フェルトガイドロール、 16・・・フェルト巻取りロール、 17・・・−次トツブロール、 17′・・・二次トップロール。
Figure 1 is a block diagram showing an overview of a test continuous bright annealing furnace adopted in the research process. Figure 2 is a schematic diagram showing an example of a continuous bright annealing furnace used in the method of the present invention. It is a diagram. In the drawings, 1.10...Bright annealing (B A) furnace body, 2.2'.
... N2 gas filled chamber, 3... Coil material to be processed, 4... Sealing material, 5
... Tiger 7"o-/I/, 5... Inlet guide roll, 7... Outlet guide roll, 8... Heating zone, 9
...Cooling zone, 11.11'...N2 gas atmosphere chamber, 12...Felt, 13...Felt back-up material, 14...Felt unwinding roll, 15...Felt guide roll, 16...Felt winding roll, 17...-Next top roll, 17'...Secondary top roll.

Claims (1)

【特許請求の範囲】[Claims] 炉本体の被処理コイル材入側及び出側部に、コイル材を
通過させるためのシール部を介してN_2ガス雰囲気室
を設けた連続焼鈍炉を使用すると共に、該N_2ガス雰
囲気室の雰囲気圧を炉本体内のArガス雰囲気圧よりも
低くかつ炉外圧よりも高い圧力に設定し、しかも少なく
とも被処理コイル材入側のN_2ガス雰囲気室において
はコイル材入口シール部から炉外へN_2ガスを噴出さ
せながらコイル材を連続的に導入し光輝焼鈍することを
特徴とする、チタンコイル材の連続光輝焼鈍方法。
A continuous annealing furnace is used in which an N_2 gas atmosphere chamber is provided at the inlet and outlet sides of the furnace body for the coil material to be processed through a seal part for passing the coil material, and the atmospheric pressure of the N_2 gas atmosphere chamber is is set to a pressure lower than the Ar gas atmosphere pressure inside the furnace body and higher than the furnace outside pressure, and at least in the N_2 gas atmosphere chamber on the inlet side of the coil material to be processed, the N_2 gas is introduced from the coil material inlet seal part to the outside of the furnace. A method for continuous bright annealing of titanium coil material, characterized in that the coil material is continuously introduced and bright annealed while being ejected.
JP9186987A 1987-04-16 1987-04-16 Continuous bright annealing method for titanium coil material Pending JPS63259059A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9186987A JPS63259059A (en) 1987-04-16 1987-04-16 Continuous bright annealing method for titanium coil material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9186987A JPS63259059A (en) 1987-04-16 1987-04-16 Continuous bright annealing method for titanium coil material

Publications (1)

Publication Number Publication Date
JPS63259059A true JPS63259059A (en) 1988-10-26

Family

ID=14038564

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9186987A Pending JPS63259059A (en) 1987-04-16 1987-04-16 Continuous bright annealing method for titanium coil material

Country Status (1)

Country Link
JP (1) JPS63259059A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002072344A3 (en) * 2001-03-08 2002-12-12 Deutsche Titan Gmbh Method for producing a titanium film comprising a nitride surface coating

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4922501U (en) * 1972-05-17 1974-02-26

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4922501U (en) * 1972-05-17 1974-02-26

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002072344A3 (en) * 2001-03-08 2002-12-12 Deutsche Titan Gmbh Method for producing a titanium film comprising a nitride surface coating

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