JPS60128214A - Preventive method for formation of speck pattern on stainless steel strip - Google Patents
Preventive method for formation of speck pattern on stainless steel stripInfo
- Publication number
- JPS60128214A JPS60128214A JP23504383A JP23504383A JPS60128214A JP S60128214 A JPS60128214 A JP S60128214A JP 23504383 A JP23504383 A JP 23504383A JP 23504383 A JP23504383 A JP 23504383A JP S60128214 A JPS60128214 A JP S60128214A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- stainless steel
- steel strip
- strip
- rolling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 13
- 239000010935 stainless steel Substances 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 6
- 101100117236 Drosophila melanogaster speck gene Proteins 0.000 title abstract 2
- 230000015572 biosynthetic process Effects 0.000 title abstract 2
- 230000003449 preventive effect Effects 0.000 title 1
- 238000005097 cold rolling Methods 0.000 claims abstract description 15
- 238000001953 recrystallisation Methods 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 27
- 239000010731 rolling oil Substances 0.000 claims description 13
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 9
- 239000011707 mineral Substances 0.000 claims description 9
- 238000000137 annealing Methods 0.000 abstract description 8
- 238000005096 rolling process Methods 0.000 abstract description 8
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 239000000314 lubricant Substances 0.000 abstract 4
- 101000601429 Rattus norvegicus N-terminal EF-hand calcium-binding protein 1 Proteins 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 8
- 239000010949 copper Substances 0.000 description 8
- 239000007921 spray Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000007127 saponification reaction Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 230000037303 wrinkles Effects 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0239—Lubricating
- B21B45/0245—Lubricating devices
- B21B45/0248—Lubricating devices using liquid lubricants, e.g. for sections, for tubes
- B21B45/0251—Lubricating devices using liquid lubricants, e.g. for sections, for tubes for strips, sheets, or plates
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Rolling (AREA)
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
Description
【発明の詳細な説明】
生防止方法に関するものであ為・
ステンレス銅帯はその用途上非常に美麗な表面性状が要
求され、均一な表面色調であることが必要である。しか
［７ながら、直径２〜゛／θ１８度の班点状の模様が銅
帯表面に発生ずることがあり、問題と々っている。この
班点状模様は冷延後の焼鈍を大気下で行うＪＩＳＧグ３
θＳの＆ −１ Ｄ及び扁２Ｂ仕上げのステンレスでの
み□発生（７、中でもＳＵｓ３０￥等を含むオーステナ
イト系において顕著である。[Detailed Description of the Invention] This invention relates to a method for preventing corrosion. - Stainless steel copper strips are required to have very beautiful surface properties due to their use, and must have a uniform surface color tone. However, there are many problems as speckled patterns with a diameter of 2 to 18 degrees/θ may appear on the surface of the copper strip. This spot-like pattern is produced by JIS G3, which is annealed in the atmosphere after cold rolling.
□ occurs only in stainless steel with θS of &-1 D and flat 2B finish (7, especially noticeable in austenitic stainless steel containing SUs 30 yen, etc.).
そこで、本発明者等は、班点状模様の発生原因を調査し
た結果、以゛下に述べるようなメカニズムで発生してい
ると考えられる。Therefore, the inventors of the present invention investigated the cause of the occurrence of the speckled pattern, and as a result, it is believed that it occurs due to the mechanism described below.
即ち、ステンレス鋼帯の冷間圧延は、光沢度を確保する
必要から、きわめてまれな場合を除いてミネラル質スト
レート圧延油を用いて行なわれる。冷延時にはワークロ
ールと銅帯との間で多量の塑性加工熱が発生［７、温度
が上列することにより圧延油が銅帯表面へ部分的に焼き
付き、模様を形成する。この模様は冷延後の鋼帯表面゛
で顕著に観察される。前記の圧延油が焼き付いた部分は
、油膜厚みが厚く、そうでない剖】分は油膜厚みが薄い
だめ、冷延後の焼鈍時において、油飯，き付き部分は圧
延油の蒸発か遅れ、その分だけ大気との高温下での接触
時間が短かくなるため、焼鈍時に生じる酸化スケール厚
みが薄くなる。That is, cold rolling of stainless steel strips is carried out using mineral straight rolling oil, except in very rare cases, because of the need to ensure gloss. During cold rolling, a large amount of plastic working heat is generated between the work roll and the copper strip [7] As the temperature rises, rolling oil partially burns onto the surface of the copper strip, forming a pattern. This pattern is clearly observed on the surface of the steel strip after cold rolling. The oil film is thick in the areas where the rolling oil is baked, and the oil film is thin in the areas where it is not. Since the contact time with the atmosphere at high temperatures is shortened by that amount, the thickness of the oxide scale generated during annealing becomes thinner.
前記のスケール厚みの薄い部分は、焼鈍に引き続き行な
われる酸洗工程において、スケールの薄い分だけ酸液に
よる表面侵食が少なくなり、他の部分とに光沢差が生じ
、表面色調が均一でなくなる。したがって、大気下で焼
鈍する＆ −２Ｂ及び＆２Ｄ仕上のステンレスでのみ、
斑点状模様が発生する。In the portion where the scale is thin, surface erosion by the acid solution is reduced due to the thinner scale in the pickling step performed subsequent to annealing, resulting in a difference in gloss from other portions and uneven surface color. Therefore, only stainless steel with &-2B and &2D finishes annealed in the atmosphere,
A speckled pattern appears.
本発明者等は前記の観察から斑点模様の発生が、不均一
な厚みのスケールが発生するのに起因するのに鑑み、均
一なスケールを発生させるべく種々研究を重ねだ結果、
ステンレス銅帯をミネラル質ストレート圧延油を用いて
冷間圧延（７だ後、同一の圧延油を０．２３ｔ／ｌｒ？
以上の塗布量にて塗油し、大気雰囲気下での再結晶化熱
処理を施すことにより好結果が得られることを見出（７
、本発明として提案したものである。Based on the above observation, the inventors of the present invention found that the occurrence of speckled patterns is caused by the generation of scales with non-uniform thickness, and as a result of conducting various studies in order to generate uniform scales.
A stainless copper strip was cold rolled using mineral straight rolling oil (after 7 days, the same rolling oil was rolled at 0.23t/lr?
It was discovered that good results could be obtained by applying oil in the above amount and performing recrystallization heat treatment in an atmospheric atmosphere (7
, which was proposed as the present invention.
本発明方法を第１図に基き詳祠に説明すると、ミネラル
質ストレート圧延油を用いて冷間圧延これたステンレス
鋼帯／は、一対のプライドル口−ルコ、２とデフレクト
ロール３とで焼鈍炉グに送られる。この焼鈍炉グに送ら
れる手前に冷間圧延時に用いた圧延油と同じミネラル質
ストレート圧延油を上下のオイル噴霧ノズルＳ。The method of the present invention will be explained in detail based on FIG. 1. A stainless steel strip cold-rolled using mineral straight rolling oil is annealed with a pair of pre-dol rolls 2 and deflector rolls 3. sent to the furnace. Before being sent to this annealing furnace, upper and lower oil spray nozzles S are used to spray the same mineral straight rolling oil as the rolling oil used during cold rolling.
５で表裏に噴霧する。この際の塗油量は０．２Ｓグ／−
以上好ましくは０． ！； ｆ ／−〜左０グ／ｍ２の
範囲がよい。Step 5: Spray on both sides. The amount of oil applied at this time is 0.2Sg/-
The above is preferably 0. ! ; A range of f/- to 0 g/m2 on the left is preferable.
第２図に示すように０．２Ｓグ／？？？２では斑点模様
は小さく使用に耐えるものであり、０．２左グ／ ｎ？
以下では斑点模様は中くらいの大き烙になり使用できな
い。父よ０９７２以上になると斑点模様の発生はないが
塗油に要するコストが高くなり、塗油設備か大型化する
必要がある等の問題があり、ｊ０グ／ｎｉ″以下か好ま
し７い。As shown in Figure 2, 0.2Sg/? ? ? In 2, the speckled pattern is small and usable, and is 0.2 left g/n?
Below, the speckled pattern becomes medium-sized and cannot be used. If it is 0972 or higher, there will be no speckled pattern, but there are problems such as the cost of oil application being high and the oil application equipment needing to be enlarged, so it is preferably less than j0g/ni''.
前記、オイル噴霧ノズル５．５で表裏から塗油した後に
、一対のワイパーロール乙、７で油を均一に塗油し、焼
鈍炉グ内で大気雰囲気下で温度と００〜／／Ｓ０℃で０
．Ｓ−２分間焼鈍するＯ
尚、図中ざはオイル受、りはオイルミスト集塵ダクト、
１０は焼鈍炉グ内に設置したサポートロールである。After applying oil from the front and back using the oil spray nozzle 5.5, the oil is applied uniformly using a pair of wiper rolls B, 7, and then the oil is applied uniformly in an annealing furnace under atmospheric conditions at a temperature of 00~//S0℃. 0
．． S - Anneal for 2 minutes.
10 is a support roll installed in the annealing furnace.
本発明においては、冷間圧延後に圧延時に使用したもの
と同じミネラル質ストレート圧延油を塗布することによ
り、油の焼き付き部分を伊い、均一々スケール厚を生ぜ
し７め、斑点模様の発生を防止することができる。In the present invention, by applying the same mineral straight rolling oil as that used during rolling after cold rolling, the oil burn-in area is prevented, a uniform scale thickness is produced, and the occurrence of spot patterns is prevented. It can be prevented.
一方、圧延時に使用したミオ２１１軍ストレー１・油以
外のタイプとしてエマルジョン（ミネラル／θチ含有）
オイルをｘ、ｏｔ／ｎｚの割合で塗油］７たが、焼き付
いた油と種類が異なるため、色調は改善されず、逆にま
だら状の模様が発生し７ノと 。On the other hand, emulsion (contains mineral/θ) as a type other than Mio 211 Army Stray 1 and oil used during rolling.
Apply oil at a ratio of x, ot/nz]7, but since the type of oil is different from the baked-on oil, the color tone was not improved and, on the contrary, a mottled pattern appeared.
以上、斑点模様について述べてきたが、この塗油による
効果は冷延時の油の焼き付きに対し・てだけでなくたと
えば冷延時に疵防止のだめに装入する鋼帯合紙のしわに
より、油膜厚みに差が出来たときにおいても、均一な色
調を得られるというメリットかある。すなわち焼鈍前に
銅帯表面に油膜厚みが生じているケースにおいてこの塗
油は有効である。As mentioned above, the effect of this oil application is not only on oil seizing during cold rolling, but also on the thickness of the oil film due to wrinkles in the steel strip interleaving paper inserted into the reservoir to prevent scratches during cold rolling. The advantage is that even when there is a difference in color, a uniform color tone can be obtained. In other words, this oil application is effective in cases where a thick oil film has formed on the surface of the copper strip before annealing.
実帳例／
（１）塗油した銅帯
ａ、材 質′ ５ＵＳ３Ｏグ
ｂ、サイズ む厚／、Ｑｕ、×根巾１０グＱ １ｍ・（
２）焼鈍条件
ａ１通鈑速度 ２３ｍ／分
■冷延条件
ａ、冷延前板厚 ｔｉ−、ｏｗｔｂ
ｂ、圧延圧下率 ７３％
Ｃ１圧延油の性状
（ａ）タイプ ミネラル質ストレートオイル（ｂ）比
重 ０．ｆ乙
（Ｃ）粘 度（グＯ℃、ｃｅｔ） ／２．！；（ｄ）全
酸価（ｍｙＫｏｎ／ｒ） ２．０（ｅ）ケン化価（ｒｒ
＋ｒｘｏｌｒ） ’、２ｇ（へ）塗油量 ’ ／、！；
ｔ／フ１？塗油した部分は斑点状模様は発生しなからだ
のに対（７、塗油を中止した部分は顕著な斑点状模様が
発生した。Actual example / (1) Oiled copper strip a, material '5US3Og b, size Thickness/, Qu, x root width 10g Q 1m・(
2) Annealing conditions a1 Sheet speed 23 m/min ■Cold rolling conditions a, sheet thickness before cold rolling ti-, owtb b, rolling reduction ratio 73% Properties of C1 rolling oil (a) type Mineral straight oil (b) ratio
Heavy 0. f (C) Viscosity (gO℃, cet) /2. ! (d) Total acid number (myKon/r) 2.0 (e) Saponification number (rr
+rxolr) ', 2g (to) amount of oil applied '/,!;
t/F1? In contrast to the areas where the oil was applied, no speckled patterns occurred (7), where the oiling was stopped, a noticeable speckled pattern occurred.
実施例２
（１）塗油した銅帯
ａ、ｌ 質 Ｓ Ｕ Ｓ￥３０
ｂ、サイズ 板厚／、左Ｍ、 ｘ板巾／、２グＱｗｔｔ
。Example 2 (1) Oiled copper strip a, l Quality SUS ￥30 b, size plate thickness/, left M, x plate width/, 2g Qwtt
.
（Ｐ２廓１・、鈍条件 ａ０通板速度 ／！；ｍ／分 （５）冷延条件 ａ、冷延前板厚 ｌＡ左Ｍ。(P2 1・, blunt condition a0 Threading speed /! ;m/min (5) Cold rolling conditions a. Sheet thickness before cold rolling lA left M.
ｂ、圧延圧下率 乙７チ
Ｃ０圧延油の性状
（ａ）タイプ ミネラル質ストレートオイル（ｂ）比
重 ０．ｆ乙
（Ｃ）粘 度（グ０℃、ｃｓｔｌ ／７．ｇ（ｄ）全酸
価（ｍｔｘｏＨ７／ｌ） ０．０ｇ（ｅ）ケン化価（ｍ
、ｆＫＯＨ／ｆ ） ２．７（９）塗油量 ３．０ ｙ
／ｎ？
実施実施例間じく、塗油した部分には斑点状模様は発生
しなかったのに対し、塗油を中止した部分には顕著な斑
点状模様が発生した。b, Rolling reduction ratio Otsu 7chi C0 rolling oil properties (a) Type Mineral straight oil (b) ratio
Heavy 0. f (C) Viscosity (g0℃, cstl /7.g (d) Total acid value (mtxoH7/l) 0.0g (e) Saponification number (m
, fKOH/f ) 2.7 (9) Oil application amount 3.0 y
/n? Immediately after working example, no speckled pattern appeared in the oiled area, but a noticeable speckled pattern appeared in the area where the oiling was stopped.
図は本発明に係るステンレス鋼帯の班点模様の発生防止
方法の一実施例を示すもので、第１図はその配置を示す
側面図、第２図は塗布量と班点模様の関係を示す図であ
る。
特許出願人 川崎製鉄株式会社The figures show an example of the method for preventing the occurrence of speckled patterns on stainless steel strips according to the present invention. Fig. 1 is a side view showing the arrangement, and Fig. 2 shows the relationship between the amount of coating and the speckle pattern. FIG. Patent applicant: Kawasaki Steel Corporation
Claims (1)
冷間圧延した後、同一の圧延油を０、．２３ｆ／−以上
の塗布量にて塗油し、大気雰囲気下での再結晶化処理を
施すことを特徴とするステンレス鋼帯の班点模様の発生
防止方法。After cold rolling a stainless steel strip using mineral straight rolling oil, the same rolling oil was applied to 0, . A method for preventing the occurrence of speckled patterns on a stainless steel strip, which comprises applying oil in an amount of 23 f/- or more and performing a recrystallization treatment in an atmospheric atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23504383A JPS60128214A (en) | 1983-12-15 | 1983-12-15 | Preventive method for formation of speck pattern on stainless steel strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23504383A JPS60128214A (en) | 1983-12-15 | 1983-12-15 | Preventive method for formation of speck pattern on stainless steel strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60128214A true JPS60128214A (en) | 1985-07-09 |
| JPH0225416B2 JPH0225416B2 (en) | 1990-06-04 |
Family
ID=16980233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23504383A Granted JPS60128214A (en) | 1983-12-15 | 1983-12-15 | Preventive method for formation of speck pattern on stainless steel strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60128214A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6217138A (en) * | 1985-07-13 | 1987-01-26 | Nisshin Steel Co Ltd | Method for continuously annealing cold rolled austenitic stainless steel strip |
| JPH03114602A (en) * | 1989-09-28 | 1991-05-15 | Kawasaki Steel Corp | Cold rolling method for stainless steel strip |
| KR20020001452A (en) * | 2000-06-28 | 2002-01-09 | 이구택 | A method for manufacturing stainless steel slabs reducing m type sliver defect |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS565287A (en) * | 1979-06-28 | 1981-01-20 | Mitsubishi Heavy Ind Ltd | Hull caisson method |
| JPS5735619A (en) * | 1980-08-08 | 1982-02-26 | Sumitomo Metal Ind Ltd | Annealing method for cold rolled steel plate |
-
1983
- 1983-12-15 JP JP23504383A patent/JPS60128214A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS565287A (en) * | 1979-06-28 | 1981-01-20 | Mitsubishi Heavy Ind Ltd | Hull caisson method |
| JPS5735619A (en) * | 1980-08-08 | 1982-02-26 | Sumitomo Metal Ind Ltd | Annealing method for cold rolled steel plate |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6217138A (en) * | 1985-07-13 | 1987-01-26 | Nisshin Steel Co Ltd | Method for continuously annealing cold rolled austenitic stainless steel strip |
| JPH0465885B2 (en) * | 1985-07-13 | 1992-10-21 | Nisshin Steel Co Ltd | |
| JPH03114602A (en) * | 1989-09-28 | 1991-05-15 | Kawasaki Steel Corp | Cold rolling method for stainless steel strip |
| KR20020001452A (en) * | 2000-06-28 | 2002-01-09 | 이구택 | A method for manufacturing stainless steel slabs reducing m type sliver defect |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0225416B2 (en) | 1990-06-04 |
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