JPS62185832A - Manufacture of cold rolled steel strip or sheet of austenitic stainless steel - Google Patents
Manufacture of cold rolled steel strip or sheet of austenitic stainless steelInfo
- Publication number
- JPS62185832A JPS62185832A JP2494386A JP2494386A JPS62185832A JP S62185832 A JPS62185832 A JP S62185832A JP 2494386 A JP2494386 A JP 2494386A JP 2494386 A JP2494386 A JP 2494386A JP S62185832 A JPS62185832 A JP S62185832A
- Authority
- JP
- Japan
- Prior art keywords
- hot
- cold
- cold rolling
- annealing
- rolled
- 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
- 229910000963 austenitic stainless steel Inorganic materials 0.000 title claims abstract description 17
- 239000010960 cold rolled steel Substances 0.000 title claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 238000000137 annealing Methods 0.000 claims abstract description 63
- 238000005097 cold rolling Methods 0.000 claims abstract description 45
- 238000000034 method Methods 0.000 claims abstract description 31
- 238000005098 hot rolling Methods 0.000 claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 238000001953 recrystallisation Methods 0.000 abstract description 6
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 description 8
- 206010070834 Sensitisation Diseases 0.000 description 3
- 238000005554 pickling Methods 0.000 description 3
- 230000008313 sensitization Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910001566 austenite Inorganic materials 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、オーステナイト系ステンレス鋼の冷延鋼帯ま
たは鋼板の製造法に関する。より詳しくは、熱延板の焼
鈍を省略しても塑性異方性の少ない冷延綱帯または鋼板
を得ることのできるオーステナイト系ステンレス調帯ま
たは鋼板の製造法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for manufacturing a cold-rolled austenitic stainless steel strip or steel plate. More specifically, the present invention relates to a method for producing an austenitic stainless steel strip or steel plate that can produce a cold-rolled steel strip or steel plate with low plastic anisotropy even if the annealing of the hot-rolled steel sheet is omitted.
従来、オーステナイト系ステンレス鋼の冷延鋼板または
鋼帯（本願明細書ではこれらを総称して冷延板と呼ぶこ
とがある）の製造に際しては、熱間圧延によって得られ
た熱延鋼板または銅帯（同じく熱延板と呼ぶことがある
）を焼鈍処理し、酸洗したのち冷間圧延し、最終焼鈍を
行っていた。Conventionally, when producing cold-rolled steel sheets or steel strips of austenitic stainless steel (these may be collectively referred to as cold-rolled sheets in the specification of this application), hot-rolled steel sheets or copper strips obtained by hot rolling are used. (also sometimes referred to as a hot rolled sheet) was annealed, pickled, cold rolled, and final annealed.
すなわち、オーステナイト系ステンレス鋼の熱延板は１
通常の熱間圧延条件によった場合には、未再結晶オース
テナイトＭｉ織を呈し且つオーステナイト結晶粒界や変
形帯に炭化物の析出した鋭敏化状態にあるので、これを
１１００℃近辺の温度で焼鈍処理することにより再結晶
を完了させて軟質化し且つ炭化物を固溶化して耐食性を
高めることが行われていた。近年においては、この熱延
板焼鈍を省略して省設備、省エネルギーを図ることが提
案されている。In other words, a hot-rolled austenitic stainless steel sheet has 1
Under normal hot rolling conditions, it exhibits an unrecrystallized austenite Mi texture and is in a sensitized state with carbide precipitated at austenite grain boundaries and deformation zones, so it is annealed at a temperature around 1100°C. The treatment completes recrystallization, softens the material, and converts carbide into a solid solution to improve corrosion resistance. In recent years, it has been proposed to omit this hot-rolled sheet annealing to save equipment and energy.
同一出願人に係る特開昭５５−７０４０４号公報は熱延
条件を適切に制御することによって、このオーステナイ
ト系ステンレス鋼の熱延板焼鈍を省略可能とする技術を
開示する。JP-A-55-70404, filed by the same applicant, discloses a technique that makes it possible to omit hot-rolled sheet annealing of austenitic stainless steel by appropriately controlling hot-rolling conditions.
特開昭５９−１２９７３１号公報も、熱延条件と酸洗条
件を適切にすることによって、オーステナイト系ステン
レス鋼の熱延板焼鈍を省略可能とする技術を開示する。JP-A-59-129731 also discloses a technique that makes it possible to omit hot-rolled sheet annealing of austenitic stainless steel by optimizing hot-rolling conditions and pickling conditions.
熱延板焼鈍を省略してオーステナイト系ステンレス鋼の
冷延鋼板または調帯を製造した場合には塑性異方性の問
題が付随する。すなわち、圧延大同、圧延方向と直角方
向、圧延方向と４５°方向では機械的性質に差が生じ１
例えばこの薄板を円筒深絞り加工したさいにイヤリング
が発生する。When cold-rolled steel sheets or strips of austenitic stainless steel are manufactured by omitting hot-rolled sheet annealing, the problem of plastic anisotropy occurs. In other words, there are differences in mechanical properties in the same rolling direction, in the direction perpendicular to the rolling direction, and in the 45° direction to the rolling direction.
For example, earrings are generated when this thin plate is deep drawn into a cylinder.
前記の特開昭５５−７０４０４号公報に記載の発明法に
よれば、熱延板は再結晶が完了し且つ鋭敏化が抑制され
るので熱延板焼鈍は省略できるが、塑性異方性の問題に
ついては未解決である。According to the invention method described in JP-A No. 55-70404, the recrystallization of the hot-rolled sheet is completed and sensitization is suppressed, so hot-rolled sheet annealing can be omitted, but the plastic anisotropy is The issue remains unresolved.
一方、特開昭５９−１２９７３１号公報は塑性異方性を
低減するために熱延板の＆［ｌ織を未再結晶組織とする
熱延条件を教示するが、この場合には熱延板が硬質とな
り冷間圧延に制約を受けるし、また鋭敏化が完全に抑制
されないので酸洗条件に制約を受ける。On the other hand, JP-A-59-129731 teaches hot rolling conditions in which the &[l weave of the hot rolled sheet is made into an unrecrystallized structure in order to reduce plastic anisotropy. Since the steel becomes hard, cold rolling is restricted, and sensitization is not completely suppressed, so pickling conditions are restricted.
従来においては、熱延板焼鈍を省略した場合の塑性異方
性の問題を以後の冷間圧延工程や焼鈍工程で解決するこ
とはなされていなかった０本発明は、熱延板焼鈍を省略
した場合の塑性異方性の問題を以後の冷間圧延の工程を
適切に実施することによって解決しようとするものであ
る。Conventionally, the problem of plastic anisotropy when hot-rolled sheet annealing is omitted has not been solved in the subsequent cold rolling process or annealing process.The present invention omit hot-rolled sheet annealing. The objective is to solve the problem of plastic anisotropy in this case by appropriately performing the subsequent cold rolling process.
本発明は、熱間圧延工程、冷間圧延工程および最終焼鈍
工程を経てオーステナイト系ステンレス鋼の冷延鋼板ま
たは鋼帯を製造するにさいし。The present invention is for producing cold-rolled steel plates or steel strips of austenitic stainless steel through a hot rolling process, a cold rolling process, and a final annealing process.
熱間圧延工程と冷間圧延工程との間における熱延板の焼
鈍処理を省略し、そして冷間圧延工程において中間焼鈍
を行うことなく製品板厚まで冷延すること、そして。To omit annealing treatment of a hot rolled sheet between a hot rolling process and a cold rolling process, and to cold roll the sheet to a product thickness without performing intermediate annealing in the cold rolling process.
冷間圧延工程におけるトータル冷延率を４０％未満とす
ること。The total cold rolling rate in the cold rolling process should be less than 40%.
を特徴とする塑性異方性の少ないオーステナイト系スー
テンレス冷延鋼板または調帯の製造法を提供するもので
ある。The present invention provides a method for producing an austenitic stainless steel cold-rolled steel sheet or a toning strip characterized by low plastic anisotropy.
特に本発明は、特開昭５５−７０４０４号公報に記載さ
れた方法、すなわち仕上圧延機群のトータル圧下率と銅
帯の圧延仕上温度とを特開昭５５−７０４０４号公報の
第１図に示された斜線域の範囲となるように制御し、仕
上圧延機を出て巻取機に至るホットランテーブル上を流
れる調帯が３〜１０秒間空冷されたあと急冷されて４０
０〜６００℃の温度範囲で巻取られるようにラインを制
御する方法、に従って熱間圧延工程で再結晶を完了し且
つ鋭敏化を抑制した熱延板を製造し、この熱延板を以後
の本発明に従う冷間圧延に供するのが好ましい。In particular, the present invention uses the method described in JP-A No. 55-70404, that is, the total rolling reduction of the finishing rolling mill group and the finishing rolling temperature of the copper strip as shown in Fig. 1 of JP-A-55-70404. The toning strip flowing on the hot run table from the finishing mill to the winding machine is controlled so that it falls within the shaded area shown, and is air-cooled for 3 to 10 seconds and then rapidly cooled to 40 ml.
A hot-rolled sheet with complete recrystallization and suppressed sensitization in the hot rolling process is manufactured according to a method of controlling the line so that it can be wound in a temperature range of 0 to 600°C, and this hot-rolled sheet is used in subsequent processes. Preferably, it is subjected to cold rolling according to the invention.
本発明法は熱延板焼鈍を省略しても以後の冷間圧延を適
切な条件で行うことによって塑性異方性の少ないオース
テナイト系ステンレス鋼の冷延鋼板または調帯を得るも
のであるが、熱間圧延工程では、前記の特開昭５５−７
０４０４号公報に記載の方法に従う場合でもまた従わな
い場合でも、その熱延仕上温度は８５０〜１０３０℃の
範囲、＠取温度は４００〜６００℃の範囲に制御するの
が好ましい。In the method of the present invention, even if hot-rolled sheet annealing is omitted, cold-rolled steel sheets or strips of austenitic stainless steel with low plastic anisotropy are obtained by performing subsequent cold rolling under appropriate conditions. In the hot rolling process, the above-mentioned JP-A-55-7
Regardless of whether the method described in Publication No. 0404 is followed or not, it is preferable to control the hot rolling finishing temperature in the range of 850 to 1030°C and the drawing temperature in the range of 400 to 600°C.
本発明者らは、オーステナイト系ステンレス鋼の代表鋼
種である５Ｏ３３０４について前記の熱間圧延条件で得
た熱延板を、焼鈍することな（１回冷間圧延（中間焼鈍
を行なわない冷間圧延）と最終焼鈍を行い、そのさいの
トータル冷延率と最終焼鈍条件を広範囲で変化させて冷
延板の塑性異方性を調べた。塑性異方性の評価は円筒カ
ップ試験による下式に従うイヤリング率（χ）によった
。The present inventors conducted a hot-rolled sheet obtained under the above-mentioned hot-rolling conditions for 5O3304, which is a representative steel type of austenitic stainless steel, without annealing (one-time cold rolling (cold rolling without intermediate annealing). ) and final annealing, and the total cold rolling rate and final annealing conditions were varied over a wide range to investigate the plastic anisotropy of the cold rolled sheet. Plastic anisotropy was evaluated according to the following formula using a cylindrical cup test. According to earring rate (χ).
（Ｈｍａｘ＋Ｈｎ＋ｉｎ）’ Ｘ ’ＡＨｔａａｘ
：フランジの山の高さ
Ｈｓｉｎ ｓフランジの谷の高さ
そして、冷延率および最終焼鈍条件（焼鈍温度および焼
鈍時間）がイヤリング率にどのように関与するかを調べ
たところ、熱延板焼鈍を省略した場合にあっても、冷延
率を４０％未満にして１回冷延により冷延板を製造する
ならば、冷延後の最終焼鈍は特にその条件を規制しなく
ても、得られる冷延板のイヤリング率は熱延板焼鈍を実
施した場合と同じ水準にまで低下し、熱延板焼鈍を省略
したさいに生ずる塑性異方性の問題は実質上解決できる
ことを見出した。(Hmax+Hn+in)'X'AHtaax
: Flange peak height Hsin s Flange valley height When we investigated how the cold rolling rate and final annealing conditions (annealing temperature and annealing time) were related to the earring rate, we found that hot rolled sheet annealing Even if this is omitted, if a cold rolled sheet is produced by one cold rolling with a cold rolling ratio of less than 40%, the final annealing after cold rolling will be profitable even if the conditions are not particularly regulated. It has been found that the earring ratio of the cold-rolled sheet obtained by this method is reduced to the same level as when hot-rolled sheet annealing is performed, and that the problem of plastic anisotropy that occurs when hot-rolled sheet annealing is omitted can be substantially solved.
この試験結果の一例を第１図および第２図に示した。第
１図は冷延率および最終焼鈍温度とイヤリング率との関
係を示したものである。第１図の関係を得た試験は次の
条件によった。すなわち。An example of this test result is shown in FIGS. 1 and 2. FIG. 1 shows the relationship between the cold rolling rate, the final annealing temperature, and the earring rate. The test that yielded the relationship shown in Figure 1 was conducted under the following conditions. Namely.
供試した鋼の組成は、 Ｃ： ０．０７１％、 Ｓ
ｉ：０．５６％、Ｍｎ：１．１０％、Ｎｉ：８．５８％
、 Ｃｒ ： １８．１５％。The composition of the steel tested was: C: 0.071%, S
i: 0.56%, Mn: 1.10%, Ni: 8.58%
, Cr: 18.15%.
Ｎ ｉ ： ０．０２６％であり、熱間圧延条件は仕上
温度を９８０℃とし巻取温度を４６０℃として熱間圧延
したうえ、熱延板焼鈍を行わずに酸洗し、これを１回冷
延により冷延率を変えて薄板を製造し、最終焼鈍の時間
は３０秒の一定として焼鈍時間を変化させ、得られた冷
延板のイヤリング率を前記の式によって求めた。Ni: 0.026%, the hot rolling conditions were hot rolling at a finishing temperature of 980°C and a coiling temperature of 460°C, and then pickling without annealing the hot rolled sheet, which was carried out once. A thin plate was produced by cold rolling by varying the cold rolling rate, and the annealing time was varied while the final annealing time was kept constant at 30 seconds, and the earring ratio of the obtained cold rolled plate was determined using the above formula.
第１図の結果から、冷延率が低くなるとイヤリング率が
低下し且つ焼鈍温度が低くなるとイヤリング率が低下す
ることがわかる。そして、冷延率が４０％未満では９通
常の最終焼鈍温度範囲である１０００〜１２００℃の範
囲において、イヤリング率が７％以下となることがわか
る。このイヤリング率７％以下という水準は、旧来法に
従ってオーステナイト系ステンレス鋼の熱延板を焼鈍し
てから冷間圧延および最終焼鈍を行う従来法で得られる
冷延板の水準である。したがって、熱延板焼鈍を省略し
ても本発明法による場合には、熱延板焼鈍を実施する場
合と同等の塑性異方性の少ない冷延板が得られたことに
なる。From the results shown in FIG. 1, it can be seen that the lower the cold rolling rate, the lower the earring ratio, and the lower the annealing temperature, the lower the earring ratio. It can be seen that when the cold rolling rate is less than 40%, the earring rate is 7% or less in the normal final annealing temperature range of 1000 to 1200°C. This level of earring ratio of 7% or less is the level of a cold-rolled sheet obtained by a conventional method in which a hot-rolled austenitic stainless steel sheet is annealed in accordance with a conventional method, followed by cold rolling and final annealing. Therefore, even if hot-rolled sheet annealing is omitted, in the case of the method of the present invention, a cold-rolled sheet with less plastic anisotropy equivalent to that obtained when hot-rolled sheet annealing is performed is obtained.
第２図の結果は、最終焼鈍の温度は１１００℃の一定に
して焼鈍時間を変えた以外は第１図の場合と同様の試験
を実施したさいのイヤリング率との関係を示したもので
ある。この場合にも、冷延率が４０％未満では連続焼鈍
の通常の均熱時間の範囲においてイヤリング率が７％以
下となることがわかる。The results in Figure 2 show the relationship with the earring ratio when the same test as in Figure 1 was conducted, except that the final annealing temperature was kept constant at 1100°C and the annealing time was varied. . In this case as well, it can be seen that when the cold rolling rate is less than 40%, the earring rate is 7% or less within the normal soaking time range of continuous annealing.
したがって１本発明に従って冷延率を４０％未満にする
場合には、最終焼鈍条件は特に限定的ではなく９通常の
オーステナイト系ステンレス鋼の最終連続焼鈍条件の範
囲内で実施すればよいことになる。Therefore, 1. When the cold rolling ratio is set to less than 40% according to the present invention, the final annealing conditions are not particularly limited; 9. It is sufficient to carry out the final continuous annealing within the range of the final continuous annealing conditions for ordinary austenitic stainless steels. .
本発明の実施にあたって、冷間圧延は１回合間圧延（た
だしパス回数は任意である）によって実施する。つまり
、中間焼鈍を挟んだ多数回の冷間圧延は実施せず、１回
合間圧延によって所望板厚まで圧下し、ついで最終焼鈍
を行う、第１図および第２図の関係は連続焼鈍に適した
条件であり。In carrying out the present invention, cold rolling is carried out by one interval rolling (however, the number of passes is arbitrary). In other words, the relationships shown in Figures 1 and 2 are suitable for continuous annealing, in which cold rolling is not performed multiple times with intermediate annealing, but the plate is rolled down to the desired thickness by one interval rolling, and then final annealing is performed. The conditions are as follows.
本発明に従うと最終焼鈍は連続焼鈍により実施量ること
ができる。冷延率を４０％未満とすることにより、熱延
板焼鈍を省略してもまた冷間圧延工程での中間焼鈍を省
略しても塑性異方性を熱延板焼鈍を実施した場合と同様
の水準にまで低下できることは製造工程が簡略化し且つ
焼鈍のためのエネルギーが節約されることは明らかであ
り、この点で本発明法はオーステナイト系ステンレス鋼
の冷延綱板または調帯を経済的に有利に製造する方法を
提供するものである。According to the invention, the final annealing can be carried out by continuous annealing. By setting the cold rolling ratio to less than 40%, even if hot-rolled sheet annealing is omitted or intermediate annealing in the cold rolling process is omitted, the plastic anisotropy remains the same as when hot-rolled sheet annealing is performed. It is clear that the production process can be reduced to the level of The present invention provides an advantageous manufacturing method.
実施例
Ｃ： ０．０７２％、Ｓｉ：０．６０％、 Ｍｎ ：
１．０４％。Example C: 0.072%, Si: 0.60%, Mn:
1.04%.
Ｎｉ：８．６２％、 Ｃｒ ： １８．１８％、 Ｎ
： ０．０２７％、の５ｔｌＳ３０４ （７）連鋳スラ
ブ（厚ミ２００１１１Ｉ）を１２３０ｔニ加熱して粗圧
延を行い、熱延仕上温度を変えて１．６〜３．４１厚さ
の熱延板を製造した。そのさいの巻取温度はすべて５０
０℃以下とした。そして、熱延板焼鈍を行うことなく酸
洗し、１回冷延により板厚１．０〜１．４ｍｍにまで冷
間圧延し、ついで最終焼鈍を実施した。各々の熱延条件
、冷延率、最終焼鈍条件を第１表に示した。また、熱延
板の再結晶の有無と熱延板の硬度（Ｈｖ） 、 そし
て、得られた各冷延板の円筒カップ試験によるイヤリン
グ率（％）の測定結果も第１表に併記した。Ni: 8.62%, Cr: 18.18%, N
: 0.027%, 5tlS304 (7) A continuous cast slab (thickness: 200111I) was heated for 1230 tons and rough rolled, and hot rolled plates with a thickness of 1.6 to 3.41 were obtained by changing the hot rolling finishing temperature. was manufactured. The winding temperature at that time was all 50.
The temperature was below 0°C. Then, the hot rolled sheet was pickled without being annealed, cold rolled once to a thickness of 1.0 to 1.4 mm, and then final annealed. Table 1 shows each hot rolling condition, cold rolling rate, and final annealing condition. Table 1 also lists the measurement results of the presence or absence of recrystallization of the hot-rolled sheets, the hardness (Hv) of the hot-rolled sheets, and the earring ratio (%) of each obtained cold-rolled sheet by the cylindrical cup test.
第１表の結果から１本発明に従って冷延率を４０％以下
とした場合には、熱延板焼鈍を省略しても熱延板の再結
晶の有無にかかわらずイヤリング率が低下し、塑性異方
性の少ないオーステナイト系ステンレス鋼の冷延板が得
られることがわかる。From the results in Table 1, if the cold rolling ratio is set to 40% or less according to the present invention, even if hot-rolled sheet annealing is omitted, the earring ratio will decrease regardless of the presence or absence of recrystallization of the hot-rolled sheet, and the plasticity It can be seen that a cold-rolled austenitic stainless steel sheet with low anisotropy can be obtained.
特に熱延板が再結晶している場合には冷延板の塑性異方
性が大幅に低下していることがわかる。したがって１例
えば特開昭５５−７０４０４号公頼記載の方法によって
再結晶を完了した熱延板を使用−して本発明を実施した
場合には熱延板の軟質化と塑性異方性の低減が同時に実
現できることになる。In particular, it can be seen that the plastic anisotropy of the cold-rolled sheet is significantly reduced when the hot-rolled sheet is recrystallized. Therefore, if the present invention is carried out using a hot-rolled sheet that has been recrystallized by the method described in JP-A-55-70404, for example, the hot-rolled sheet will become softer and the plastic anisotropy will be reduced. can be realized at the same time.
、 第１図は、 ５ＵＳ３０４鋼の熱延板焼鈍を省略
して冷間圧延と最終焼鈍を実施した場合に、冷延率およ
び最終焼鈍温度とイヤリング率との関係図、第２図は同
じく冷延率および最終焼鈍時間とイヤリング率との関係
図である。
第１図
１０００ １０５０ ．１１００ １１５０
１２００最終焼鈍渥度（’Ｃ）
第２図
最終焼鈍時の均熱時間（秒）, Figure 1 shows the relationship between cold rolling rate, final annealing temperature, and earring rate when hot-rolled sheet annealing of 5US304 steel is omitted and cold rolling and final annealing are performed, and Figure 2 shows the relationship between cold rolling rate, final annealing temperature, and earring rate. FIG. 3 is a diagram showing the relationship between elongation, final annealing time, and earring ratio. Figure 1 1000 1050. 1100 1150
1200 Final annealing degree ('C) Figure 2 Soaking time during final annealing (seconds)
Claims (2)
を経てオーステナイト系ステンレス鋼の冷延鋼板または
鋼帯を製造するにさいし、 熱間圧延工程と冷間圧延工程との間における熱延板の焼
鈍処理を省略し、そして冷間圧延工程において中間焼鈍
を行うことなく製品板厚まで冷延すること、そして、 冷間圧延工程におけるトータル冷延率を４０％未満とす
ること。 を特徴とする塑性異方性の少ないオーステナイト系ステ
ンレス冷延鋼板または鋼帯の製造法。(1) In producing cold rolled steel plates or steel strips of austenitic stainless steel through a hot rolling process, a cold rolling process and a final annealing process, hot rolling between the hot rolling process and the cold rolling process. To omit the annealing treatment of the plate, and to cold-roll the plate to the product plate thickness without performing intermediate annealing in the cold rolling process, and to make the total cold rolling rate in the cold rolling process less than 40%. A method for producing cold-rolled austenitic stainless steel sheets or steel strips with low plastic anisotropy, characterized by:
れる条件で実施する特許請求の範囲第１項記載の製造法
。(2) The manufacturing method according to claim 1, wherein the hot rolling step is carried out under conditions that allow a hot rolled sheet having a recrystallized structure to be obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2494386A JPS62185832A (en) | 1986-02-08 | 1986-02-08 | Manufacture of cold rolled steel strip or sheet of austenitic stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2494386A JPS62185832A (en) | 1986-02-08 | 1986-02-08 | Manufacture of cold rolled steel strip or sheet of austenitic stainless steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62185832A true JPS62185832A (en) | 1987-08-14 |
Family
ID=12152110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2494386A Pending JPS62185832A (en) | 1986-02-08 | 1986-02-08 | Manufacture of cold rolled steel strip or sheet of austenitic stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62185832A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008342A (en) * | 2012-12-27 | 2013-04-03 | 亚洲铝业（中国）有限公司 | Production method of 5052-H32 aluminum alloy plate-strip |
| CN113403461A (en) * | 2021-06-25 | 2021-09-17 | 宝钢德盛不锈钢有限公司 | Manufacturing process and product of high-hardness hardware stainless steel |
-
1986
- 1986-02-08 JP JP2494386A patent/JPS62185832A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008342A (en) * | 2012-12-27 | 2013-04-03 | 亚洲铝业（中国）有限公司 | Production method of 5052-H32 aluminum alloy plate-strip |
| CN113403461A (en) * | 2021-06-25 | 2021-09-17 | 宝钢德盛不锈钢有限公司 | Manufacturing process and product of high-hardness hardware stainless steel |
| CN113403461B (en) * | 2021-06-25 | 2023-02-28 | 宝钢德盛不锈钢有限公司 | Manufacturing process and product of high-hardness hardware stainless steel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH01172524A (en) | Production of complex phase structure chromium stainless strip having excellent corrosion resistance and high ductility and strength | |
| JPS5959827A (en) | Manufacture of hot-rolled steel plate with superior processability | |
| JPS62185832A (en) | Manufacture of cold rolled steel strip or sheet of austenitic stainless steel | |
| JPS62185833A (en) | Manufacture of cold rolled steel strip or steel sheet of austenitic stainless steel | |
| JP3222057B2 (en) | Method for producing Cr-Ni stainless steel hot-rolled steel sheet and cold-rolled steel sheet excellent in surface quality and workability | |
| JPS5941803B2 (en) | Cold rolling method for thin steel strip for drawing | |
| JP2004223536A (en) | Method for manufacturing ferritic stainless steel sheet excellent in roping property | |
| JPH0525548A (en) | Production of cr-ni stainless steel sheet excellent in material and surface quality | |
| JP3273597B2 (en) | Cr-Ni stainless steel sheet having excellent surface quality and workability and method for producing the same | |
| JPS61204320A (en) | Production of as-rolled thin steel sheet for working having excellent ridging resistnace | |
| JPS5941508B2 (en) | Manufacturing method of titanium hot rolled sheet | |
| JP3034964B2 (en) | Method for producing soft surface-treated original sheet by continuous annealing | |
| JPS61204325A (en) | Production of as-rolled thin steel sheet for working having excellent ridging resistance and strength-elongation balance | |
| JPH0580528B2 (en) | ||
| JPS62192537A (en) | Manufacture of cold rolled austenitic stainless steel sheet or strip | |
| JPS58104124A (en) | Production of cold-rolled steel plate for working by continuous annealing | |
| JPS5836652B2 (en) | Overaging treatment method in continuous annealing | |
| JPS63238219A (en) | Method for continuously annealing steel strip | |
| JPS61204329A (en) | Production of as-rolled thin steel sheet for working having excellent ridging resistance and aging resistance | |
| JPS60155625A (en) | Hot rolling method of dead soft steel for forming finer grain | |
| JPH01294823A (en) | Manufacture of cold rolled steel plate for ultra-deep drawing | |
| JPS61204322A (en) | Production of as-rolled thin steel sheet for working having small plane anisotropy and excellent ridging resistance | |
| JPH0333768B2 (en) | ||
| JPS6367527B2 (en) | ||
| JPS61261435A (en) | Production of thin steel sheet for working having excellent ridging resistance and tensile rigidity |