JPS5887282A - Improvement on steel product treatment - Google Patents
Improvement on steel product treatmentInfo
- Publication number
- JPS5887282A JPS5887282A JP20097982A JP20097982A JPS5887282A JP S5887282 A JPS5887282 A JP S5887282A JP 20097982 A JP20097982 A JP 20097982A JP 20097982 A JP20097982 A JP 20097982A JP S5887282 A JPS5887282 A JP S5887282A
- Authority
- JP
- Japan
- Prior art keywords
- pickling
- acid
- benzoic acid
- solution
- improvement
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims description 9
- 239000010959 steel Substances 0.000 title claims description 9
- 238000005554 pickling Methods 0.000 claims description 23
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid group Chemical group C(C1=CC=CC=C1)(=O)O WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 17
- 239000003112 inhibitor Substances 0.000 claims description 10
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 150000007524 organic acids Chemical class 0.000 claims description 9
- 239000005711 Benzoic acid Substances 0.000 claims description 8
- 235000010233 benzoic acid Nutrition 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 7
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 5
- 235000019253 formic acid Nutrition 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims description 2
- 238000009395 breeding Methods 0.000 claims 1
- 230000001488 breeding effect Effects 0.000 claims 1
- 238000003672 processing method Methods 0.000 claims 1
- 239000000243 solution Substances 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 241001122767 Theaceae Species 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- GKPOMITUDGXOSB-UHFFFAOYSA-N but-3-yn-2-ol Chemical compound CC(O)C#C GKPOMITUDGXOSB-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 235000008373 pickled product Nutrition 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は鋼鉄製品の酸洗い方法の改曽に関するの
鋼鉄製品特ｒ熱間圧延された帯鋼を１．５と４の闇のｐ
Ｈを示す有機酸特に蟻酸の水溶液を用いて酸洗いするこ
とはすでに提案されている。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the method of pickling steel products.
Pickling with an aqueous solution of an organic acid exhibiting H, in particular formic acid, has already been proposed.
更Ｋまた。鋼鉄の微妙な差異、除去すべき酸化物の種類
、酸洗い溶液中の酸の性質と濃度の各組み合わせについ
ては、下にある金属を浸蝕することなく酸化物の層ｔ−
所、望通りＦ１１実に除去する酸洗いの最適持続時間が
あることも知られている。Sara K again. For each combination of steel nuances, the type of oxide to be removed, and the nature and concentration of the acid in the pickling solution, a layer of oxide can be removed without attacking the underlying metal.
It is also known that there is an optimum duration of pickling to remove F11 as desired.
しかし、工業用の設備中では、各場合に酸洗い持続時間
を最適ｉＩに調節することは常に可能ではない。実際、
酸化層のある種の不規則性、または生産速度ならびに溶
液濃度の変動は特に作業員ケしてこの最適値よりも長い
長い酸洗い持続時間全予測させること屯あり得る。However, in industrial installations it is not always possible to adjust the pickling duration to the optimum iI in each case. actual,
Certain irregularities in the oxidation layer or variations in production rate as well as solution concentration can lead to longer pickling durations than this optimum, especially for operators.
基体、即ちこの場合は鋼の帯は、酸によって浸される時
からこのいわゆる酸洗い過度の現象が惹起するよく知ら
れた結果、即ち粗度の増大、大気浸蝕に対する抵抗性の
低下、燐酸塩処理に対する適性の悪化などの危険にさら
される。Since the substrate, i.e. the steel strip in this case, is soaked with acid, the well-known consequences of this so-called over-pickling phenomenon occur: increased roughness, decreased resistance to atmospheric erosion, phosphates. exposed to risks such as deterioration of suitability for processing.
このよく知られた現象は、酸化層除去後酸による金属の
浸蝕を妨げるいわゆる酸洗い抑制剤なる物質を酸洗い浴
に添加することによって克服され得る。しかし本出願者
は公知の酸洗い抑制剤を用いるとき酸洗い過度の現象の
抑制は製品の大気による浸蝕に対する抵抗性の改良を全
く惹起しないことを８！認した。This well-known phenomenon can be overcome by adding substances to the pickling bath, so-called pickling inhibitors, which prevent the attack of the metal by acids after removal of the oxide layer. However, the applicant has shown that when using known pickling inhibitors, the suppression of the over-pickling phenomenon does not lead to any improvement in the resistance of the product to atmospheric attack! Approved.
木発明けこの不都合を矯正することを目的とする口
こ九を実現する念め、本発明は酸洗い抑制剤として、酸
洗い過度の現象全抑制し、酸洗いされた製品に大気によ
る浸蝕に対するすぐれた抵抗性を確実に付与する少なく
とも一つの物・ｉを有機酸特に蟻酸の存在のもとｒ用い
ることを提案する。In order to achieve the goal of correcting the disadvantages of wood invention, the present invention has been developed as a pickling inhibitor, which completely suppresses the phenomenon of excessive pickling and protects pickled products from corrosion caused by the atmosphere. It is proposed to use at least one substance which ensures good resistance in the presence of an organic acid, in particular formic acid.
本発明によれば、鋼鉄製品がｆｍ酸の水溶液と接触せし
められる鋼鉄製品の処理方法ば、該有機酸溶液が少なく
とも一つの酸洗い抑制剤を含有することを木質的特徴と
する。According to the invention, a method for treating steel products in which the steel products are brought into contact with an aqueous solution of fm acid is characterized in that the organic acid solution contains at least one pickling inhibitor.
第一の実施態様によれば、有機酸溶液は安息香酸を含有
する。According to a first embodiment, the organic acid solution contains benzoic acid.
本発明によれば、安息香酸はそのものとして溶液に加え
られてもよく、あるいは有機酸との反応によって安息香
酸を遊離する塩の形で、たとえば安息香酸す） Ｕラム
の形で加えられてもよい。According to the invention, benzoic acid may be added to the solution as such or in the form of a salt which liberates benzoic acid by reaction with an organic acid, e.g. good.
他の実施態様によれば、有機酸溶液け２−メチル−３−
ブチン−２−オルを含有する。According to another embodiment, the organic acid solution 2-methyl-3-
Contains butyn-2-ol.
有機酸溶液中において達成すべき抑制剤の割合はこの溶
液の濃度によって異なる。The proportion of inhibitor to be achieved in the organic acid solution depends on the concentration of this solution.
帯鋼が高速度で循環するある種の現代的処理列において
は、設備の占’［！ｌ！１ｉｌ１１に制限するため酸洗
いの持続時間分減少することが必要である。In certain modern processing trains where the strip circulates at high speeds, the equipment is l! It is necessary to reduce the pickling duration to limit it to 1il11.
この茶汁においては酸洗い＃ｉ溶液の酸含有量の増大の
犠牲を払ってしか正し〈実施され得ない。In this tea juice, the corrective action can only be carried out at the expense of increasing the acid content of the pickling #i solution.
Ｉ＋−＋Ｈ［、操作のパラメーターの一つを改変する場
合には、前述の如く酸洗い過度の危険が増大する。この
危＃け、溶液の酸含有量が多くなればなるほどますます
大きくなる。If one of the operating parameters is modified, the risk of over-pickling increases, as mentioned above. This danger increases as the acid content of the solution increases.
本発明の方法の特に有利な実施態様によれば、有機酸と
して１０〜２ ｓ Ｉ／ｌの濃度の蟻酸を用いるときに
は、酸洗い液中の酸洗い抑制剤の濃度Ｆｉ１〜５Ｉ／／
である。According to a particularly advantageous embodiment of the process according to the invention, when formic acid with a concentration of 10 to 2 s I/l is used as the organic acid, the concentration of the pickling inhibitor in the pickling liquor is F i 1 to 5 I//
It is.
本発明の方法は、このようにして処理された鋼製品に、
大気による浸蝕に対する優れた抵抗性ならびに特に燐酸
塩処理に対する大きな適性を付与し得る。The method of the present invention provides steel products treated in this way with
It may confer excellent resistance to atmospheric attack and particularly great suitability for phosphating.
特肝出幀人 サンドル・ドＩルシエルシューメタリ
ュルジク
手続補正書
昭和ｑ年／、：、ｌＪ］。）−日
４１４鉄）４９交１理えし÷ス（・３ｙ、・寸く乙にイ
く３、補正をする者
事件との関係 ｆ７Ｌ７ ｅｒ：”）Ｂ’２Ａ。Special liver author, Sendre de I Lucier Chou Metallurgic Procedural Amendments Showa Q/,:,lJ]. )-Japanese 414 Iron) 49 Interchange 1 Riesh ÷ Su (・3y, ・Sunku Otsu ni Iku 3, relationship with the amended person case f7L7 er:”) B'2A.
俵士所−沖→年 ４、代理人Tawarashisho-Oki→2017 4. Agent
Claims (1)
続処理方法において、該溶液は少なくとも一つの酸洗い
抑制剤を含有することを特徴とする前記鋼鉄製品の連１
１！処理方法。 ２、酸洗い抑制剤は安息香酸および／または安息香酸を
遊離する一つの物質よりなろことを特徴とする特許請求
の範囲Ｉ！Ｘ１１［に記載の処理方法・ ３、安息香酸を遊離する物質は安息香酸の樵であること
を特徴とする特許請求の範囲１１２項に記載の処理方法
。 ４、安息香酸の核種は安息香酸す）１３ウムであること
番特徴とする特許ＩＩＩ求の範囲第３項に記載の処理方
法。 ５、酸洗い抑制剤は木質的に−２−メチル−３−ブチン
−２−オルよりなることを特徴とする特許ａ求の範囲第
１項に記載の処理方法。 ６、用いられる有機酸は蟻酸であることを特徴とする特
許ｇｉｌ求の範囲１ｇ１°墳から１１！５項までのいづ
れかに記載の処理方法。 ７、該溶液が１０〜２５ ｆ／ｌの蟻酸を含有するとき
、その酸洗い抑制剤含育量＃ｉ１〜５！／ｌであること
を特徴とする特許＠求の範囲第６項に記載の処理方法。[Claims] 1. A method for continuous treatment of steel products in which the steel products are brought into contact with a breeding acid solution, characterized in that the solution contains at least one pickling inhibitor.
1! Processing method. 2. Claim I!, characterized in that the pickling inhibitor is benzoic acid and/or a substance that liberates benzoic acid! 3. The treatment method according to claim 112, wherein the substance that liberates benzoic acid is benzoic acid. 4. The treatment method according to item 3 of the scope of patent III, characterized in that the nuclide of benzoic acid is 13um benzoate. 5. The treatment method according to claim 1, wherein the pickling inhibitor is wood-based and consists of -2-methyl-3-butyn-2-ol. 6. The treatment method according to any one of the claims from the range 1g 1° of the patent gil to item 11!5, characterized in that the organic acid used is formic acid. 7. When the solution contains 10-25 f/l formic acid, its pickling inhibitor content #i1-5! /l.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE6/47551A BE891163A (en) | 1981-11-17 | 1981-11-17 | IMPROVEMENTS IN PROCESSES FOR TREATING STEEL PRODUCTS |
| BE6/47551 | 1981-11-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5887282A true JPS5887282A (en) | 1983-05-25 |
Family
ID=3874904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20097982A Pending JPS5887282A (en) | 1981-11-17 | 1982-11-16 | Improvement on steel product treatment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5887282A (en) |
-
1982
- 1982-11-16 JP JP20097982A patent/JPS5887282A/en active Pending
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