JPH04120286A - Metal surface treating agent - Google Patents
Metal surface treating agentInfo
- Publication number
- JPH04120286A JPH04120286A JP23829590A JP23829590A JPH04120286A JP H04120286 A JPH04120286 A JP H04120286A JP 23829590 A JP23829590 A JP 23829590A JP 23829590 A JP23829590 A JP 23829590A JP H04120286 A JPH04120286 A JP H04120286A
- Authority
- JP
- Japan
- Prior art keywords
- metal surface
- hydrofluoric acid
- metal
- treating agent
- acid
- 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
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 56
- 239000002184 metal Substances 0.000 title claims abstract description 56
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims abstract description 8
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 8
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 8
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims abstract description 8
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical compound CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 claims abstract description 5
- 235000019270 ammonium chloride Nutrition 0.000 claims abstract description 4
- 235000010333 potassium nitrate Nutrition 0.000 claims abstract description 4
- 239000004323 potassium nitrate Substances 0.000 claims abstract description 4
- 239000012756 surface treatment agent Substances 0.000 claims description 27
- 230000007797 corrosion Effects 0.000 claims description 8
- 238000005260 corrosion Methods 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 abstract description 36
- 239000003795 chemical substances by application Substances 0.000 abstract description 10
- 238000002156 mixing Methods 0.000 abstract description 9
- 239000000126 substance Substances 0.000 abstract description 8
- 231100000331 toxic Toxicity 0.000 abstract description 6
- 230000002588 toxic effect Effects 0.000 abstract description 6
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 abstract description 4
- 229910000360 iron(III) sulfate Inorganic materials 0.000 abstract description 4
- 239000003440 toxic substance Substances 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 abstract description 2
- 238000013329 compounding Methods 0.000 abstract 2
- 231100000167 toxic agent Toxicity 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 9
- 231100000614 poison Toxicity 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- 230000007096 poisonous effect Effects 0.000 description 5
- 230000002939 deleterious effect Effects 0.000 description 4
- 150000002222 fluorine compounds Chemical class 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 3
- 238000005422 blasting Methods 0.000 description 2
- RYZCLUQMCYZBJQ-UHFFFAOYSA-H lead(2+);dicarbonate;dihydroxide Chemical compound [OH-].[OH-].[Pb+2].[Pb+2].[Pb+2].[O-]C([O-])=O.[O-]C([O-])=O RYZCLUQMCYZBJQ-UHFFFAOYSA-H 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 235000016068 Berberis vulgaris Nutrition 0.000 description 1
- 241000335053 Beta vulgaris Species 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- -1 nitrate ions Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Detergent Compositions (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は例えばステンレス鋼等の金属表面に溶接、大気
焼鈍等の熱加工又は自然腐食により厚く生成した酸化ス
ケール及び腐食生成物を除去する金属表面処理剤に関す
る。[Detailed Description of the Invention] [Industrial Application Field] The present invention is applied to metals such as stainless steel for removing thick oxide scale and corrosion products formed on the surface of metals by welding, thermal processing such as atmospheric annealing, or natural corrosion. Regarding surface treatment agents.
〔従来の技術及び発明が解決しようとする課題〕従来の
金属表面処理剤、いわゆる酸洗剤はフン化水素酸を含有
している。[Prior Art and Problems to be Solved by the Invention] Conventional metal surface treating agents, so-called acid detergents, contain hydrofluoric acid.
このため従来の金属表面処理剤は、毒物として製造、貯
蔵、運搬、陳列、販売等を行うときに保健衛生上の見地
から厳しい法規制及び取締りを受けており、取扱いに際
しては毒物及び劇物取締法第７条に定められた毒物劇物
取扱責任者を選任配置して管理しなければならなかった
。For this reason, conventional metal surface treatment agents are subject to strict laws and regulations from a health and hygiene perspective when they are manufactured, stored, transported, displayed, sold, etc. as toxic substances. A person responsible for the handling of poisonous and deleterious substances as stipulated in Article 7 of the Act had to be appointed and managed.
さらに表面処理の作業を行う場合、フッ化水素酸による
刺激臭、皮膚に接触したときの激痛等、労働安全衛生上
の問題があった。Furthermore, when performing surface treatment work, there were problems in terms of occupational safety and health, such as a pungent odor caused by hydrofluoric acid and severe pain when it came into contact with the skin.
また、フン化水素酸等のフッ素化合物は排水規制物質で
あり、フン素化合物除去設備のない所ではその使用の制
限を受けるという問題もあった。In addition, fluorine compounds such as hydrofluoric acid are regulated wastewater substances, and there is a problem in that their use is restricted in places where fluorine compound removal equipment is not available.
本発明は斯かる事情に鑑みてなされたものであり、刺激
臭を発し有毒であり、排水処理時に除去設備を要するフ
ン化水素酸を含有せず、管理及び取扱が非常に簡便であ
り、労働安全衛生上、何ら問題のない金属表面処理剤を
提供することを目的とする。The present invention was developed in view of the above circumstances, and does not contain hydrofluoric acid, which emits a pungent odor and is toxic, and requires removal equipment during wastewater treatment, is extremely easy to manage and handle, and requires no labor. The purpose is to provide a metal surface treatment agent that poses no problems in terms of safety and health.
本発明に係る金属表面処理剤は、金属表面の腐食生成物
及び酸化スケールを除去する金属表面処理剤であって、
硝酸を２〜９．９９重量％、硝酸第二鉄を５〜２０重量
％、硝酸カリウムを１〜２５重量％、硫酸第二鉄を５〜
２０重量％、スルファミン酸を５〜２０重量％、塩化ア
ンモニウムを１〜２０重量％含有することを特徴とする
。The metal surface treatment agent according to the present invention is a metal surface treatment agent that removes corrosion products and oxide scales on metal surfaces, and comprises:
Nitric acid 2-9.99% by weight, ferric nitrate 5-20% by weight, potassium nitrate 1-25% by weight, ferric sulfate 5-20% by weight
20% by weight, 5 to 20% by weight of sulfamic acid, and 1 to 20% by weight of ammonium chloride.
本発明の配合成分からなる金属表面処理剤は、フッ化水
素酸を含有せずに、金属表面の腐食生成物及び酸化スケ
ールを効果的に除去する。The metal surface treatment agent comprising the ingredients of the present invention effectively removes corrosion products and oxide scale on metal surfaces without containing hydrofluoric acid.
そして刺激臭を発し有毒であるフッ化水素酸を含有しな
いので、管理及び取扱が非常に簡便であり、労働安全衛
生上、何ら問題がない。Moreover, since it does not contain hydrofluoric acid, which emits a pungent odor and is toxic, it is very easy to manage and handle, and there are no problems in terms of occupational safety and health.
〔実施例〕 以下、本発明をその実施例に基づき具体的に説明する。〔Example〕 Hereinafter, the present invention will be specifically explained based on examples thereof.
本発明者はフン化水素酸等のフッ素化合物を一切配合せ
ず、硝酸の配合量を１０重量％未溝に制限することにし
、種々の成分及び配合率を検討した結果、表１に示した
成分及び配合率により配合すると１．良好な性能を有す
る金属表面処理剤が得られることを知見した。The inventor decided not to mix any fluorine compounds such as hydrofluoric acid and limited the amount of nitric acid added to 10% by weight, and as a result of studying various ingredients and mixing ratios, the results are shown in Table 1. When blended according to the ingredients and blending ratio: 1. It has been found that a metal surface treatment agent with good performance can be obtained.
表 １
表１に示した成分の配合率の限定理由は以下の通りであ
る。Table 1 The reason for limiting the blending ratio of the components shown in Table 1 is as follows.
硝酸は酸化スケールの除去及び金属表面の不動態化、レ
ベリングのために添加するものであり、配合率が２％未
満ではその効果がなく、１０％以上であると毒物指定を
受けることによる。Nitric acid is added to remove oxide scale, passivate the metal surface, and level it, and if the blending ratio is less than 2%, it will not be effective, and if it is 10% or more, it will be designated as a poisonous substance.
硝酸第二鉄は硝酸イオンの補充のために添加するもので
あり、５％未満ではその効果が認められず、２０％を越
えると効果の向上が見られないことによる。Ferric nitrate is added to replenish nitrate ions, and if it is less than 5%, no effect will be observed, and if it exceeds 20%, no improvement in the effect will be observed.
硝酸カリウムはスケール除去促進剤であり、１％未満で
はその効果が認められず、２５％を越えると著しく金属
の腐食を促進することによる。Potassium nitrate is a scale removal accelerator, and if it is less than 1%, its effect is not recognized, and if it exceeds 25%, it significantly accelerates metal corrosion.
硫酸第二鉄はスケールの溶解のために添加するものであ
り、５％未満ではスケールが溶解せず、２０％を越える
と硫酸第二鉄自体が溶解しないことによる。Ferric sulfate is added to dissolve scale; if it is less than 5%, the scale will not dissolve, and if it exceeds 20%, ferric sulfate itself will not dissolve.
スルファミン酸は溶解補助剤として添加するものであり
、５％未満ではその効果が認められず、２０％を越える
とスルファミン酸自体が溶解しないことによる。Sulfamic acid is added as a solubilizing agent, and if it is less than 5%, no effect will be observed, and if it exceeds 20%, sulfamic acid itself will not dissolve.
塩化アンモニウムは溶解促進剤として添加するものであ
り、１％未満ではその効果が認められず、２０％を越え
ると著しく金属の腐食を促進することによる。Ammonium chloride is added as a dissolution promoter, and if it is less than 1%, its effect will not be recognized, and if it exceeds 20%, it will significantly accelerate the corrosion of the metal.
以下に実際に配合し、性能評価試験を行った結果につい
て説明する。The results of actual blending and performance evaluation tests will be explained below.
〔数値例１〕
ステンレス鋼（ＳＵＳ３０４）製のテストプレート（２
Ｂ仕上げ、縦１００ｍ−１横５０＋ｎ＋ｍ、厚み２．５
＋ｎｍ）の中心線上に空溶接を行い、溶接ビート焼けを
発生させ、これを表２に示した成分を配合した金属表面
処理剤中に常温（２５〜３０℃）で略２０分間浸漬した
。[Numerical example 1] Stainless steel (SUS304) test plate (2
B finish, length 100m-1 width 50+n+m, thickness 2.5
Dry welding was performed on the center line of +nm) to generate weld beet burn, and this was immersed in a metal surface treatment agent containing the ingredients shown in Table 2 at room temperature (25 to 30°C) for approximately 20 minutes.
そして浸漬後、水洗を行って酸化スケールの除去程度を
調べると、酸化スケールは完全に除去され、美しい銀白
色の酸洗肌を呈しており、従来の金属表面処理剤と同様
の効果を示した。After soaking, the product was rinsed with water and examined to see how much oxide scale was removed.The oxide scale was completely removed, leaving a beautiful silver-white pickled skin, showing the same effect as conventional metal surface treatment agents. .
この〔数値例１〕の金属表面処理剤は刺激臭を発するフ
ッ化水素酸を含有しないので、処理時の作業環境が良好
であった。Since the metal surface treatment agent of [Numerical Example 1] did not contain hydrofluoric acid that gave off an irritating odor, the working environment during treatment was favorable.
表 ２
〔数値例２〕
ステンレス鋼（ｓｕｓ３０４）製のピン（直径１２Ｉｌ
ｌｌｌ＋、長さ５４１１Ｒ１）を熱処理して酸化スケー
ルを生成させ、これを〔数値例１〕と同一の金属表面処
理剤中に常温で１２０分間浸漬した。浸漬処理後、酸化
スケールは完全に除去された。そしてフン化水素酸を含
有しないので、処理時の作業環境は良好であった。Table 2 [Numerical example 2] Stainless steel (sus304) pin (diameter 12Il)
1ll+, length 5411R1) was heat treated to generate oxide scale, and then immersed in the same metal surface treatment agent as in [Numerical Example 1] for 120 minutes at room temperature. After the immersion treatment, the oxide scale was completely removed. Since it did not contain hydrofluoric acid, the working environment during treatment was good.
次に上述の試料を従来の金属表面処理剤（硝酸１５％、
フッ化水素酸５％含有）中に常温で１２０分間浸漬した
ところ、酸化スケールは完全に除去された。Next, the above sample was treated with a conventional metal surface treatment agent (nitric acid 15%,
When the sample was immersed in 5% hydrofluoric acid (containing 5% hydrofluoric acid) at room temperature for 120 minutes, the oxide scale was completely removed.
第１図（ａ）は本発明の金属表面処理剤により表面処理
を行ったピンを５００倍の倍率でＳＥＭ （走査電子顕
微鏡）により観察してその金属組織を撮影した写真、第
１図（′ｂ）は従来の金属表面処理剤により表面処理を
行ったピンの金属組織を撮影した写真である。第１図（
ｂｌにおいては結晶粒界が観察され、素地がオーバーエ
ツチングされたことが解る。Figure 1(a) is a photograph of a pin whose surface has been treated with the metal surface treatment agent of the present invention, and the metal structure thereof was photographed by observing it with a SEM (scanning electron microscope) at a magnification of 500 times. b) is a photograph of the metal structure of a pin whose surface has been treated with a conventional metal surface treatment agent. Figure 1 (
Grain boundaries were observed in bl, indicating that the substrate was over-etched.
方、第１図ｔａ）に示した数値例の方は素地が美しく、
酸化スケールのみが効果的に除去されたことが解る。On the other hand, the numerical example shown in Figure 1 (ta) has a beautiful texture;
It can be seen that only the oxide scale was effectively removed.
〔数値例３〕
ステンレス鋼（ＳＵＳ３１６）製のユニオンリング（呼
び径３インチ）を熱間鍛造して酸化スケールを発生させ
、ショツトブラスト処理して成る程度酸化スケールを除
去したものを、〔数値例１〕と同一の金属表面処理剤中
に常温で４５分間浸漬した。処理後、酸化スケールは完
全に除去され、銀白色の酸洗肌を呈した。[Numerical Example 3] A union ring made of stainless steel (SUS316) (nominal diameter 3 inches) is hot forged to generate oxide scale, and the oxide scale is removed by shot blasting. 1] was immersed in the same metal surface treatment agent at room temperature for 45 minutes. After treatment, the oxidized scale was completely removed and a silver-white pickled skin appeared.
次に、上述の試料を従来の金属表面処理剤中に常温で４
５分間浸漬すると、酸化スケールは完全に除去された。Next, the above sample was placed in a conventional metal surface treatment agent for 4 hours at room temperature.
After soaking for 5 minutes, the oxide scale was completely removed.
第２図（ａ）は本発明の金属表面処理剤により表面処理
を行ったユニオンリングの金属組織を表すＳＥＭ写真で
あり、第２図（ｂｌは従来の金属表面処理剤により表面
処理を行ったユニオンリングの金属組織を表すＳＥＭ写
真である。第２図（ａ）の金属表面は荒れた恣しがない
のに対し、第２図（ｂ）の金属表面は荒れた状態を示し
ている。これは指触でも顕著であり、本発明の金属表面
処理剤により処理した表面が滑らかであるのに対し、従
来の金属表面処理剤により処理した表面はざらざらして
いた。Figure 2 (a) is an SEM photograph showing the metal structure of a union ring whose surface was treated with the metal surface treatment agent of the present invention; This is a SEM photograph showing the metal structure of a union ring.The metal surface in Fig. 2(a) is free from roughness, while the metal surface in Fig. 2(b) shows a rough state. This was noticeable even when touched with a finger; the surface treated with the metal surface treatment agent of the present invention was smooth, whereas the surface treated with the conventional metal surface treatment agent was rough.
〔数値例４〕
ステンレス鋼（ｓｔ＋５３０４）製のナンド （呼び径
４１蒙１１１）を熱間鍛造して酸化スケールを発生させ
、ショツトブラスト処理して成る程度酸化スケールを除
去したものを、〔数値例１〕と同一の金属表面処理剤中
に常温で略２時間浸漬したところ、酸化スケールは完全
に除去され、銀白色の酸洗肌を呈した。[Numerical Example 4] A NAND made of stainless steel (ST+5304) (nominal diameter: 41 mm, 111 mm) is hot-forged to generate oxide scale, and the oxide scale is removed by shot blasting. When it was immersed in the same metal surface treatment agent as in [1] at room temperature for approximately 2 hours, the oxide scale was completely removed and a silvery white pickled skin was obtained.
上述の如く、本発明の実施例の金属表面処理剤により金
属表面は効果的に酸化スケールを除去され、美しく仕上
げられる。As mentioned above, the metal surface treatment agent of the embodiment of the present invention effectively removes oxidation scale from the metal surface and provides a beautiful finish.
なお、本発明の金属表面処理剤の各成分の配合率は実施
例の配合率に何ら限定されるものではなく、夫々の配合
率の限定範囲内において自由に選択できることは言うま
でもない。It goes without saying that the blending ratio of each component of the metal surface treatment agent of the present invention is not limited to the blending ratio of the examples, and can be freely selected within the limited range of each blending ratio.
さらに本発明の実施例ではステンレス鋼の表面を処理す
る場合につき説明しているが、何らこれに限定されるも
のではなく、例えば鉄鋼等の他の金属に適用することも
可能である。Further, in the embodiments of the present invention, the case where the surface of stainless steel is treated is explained, but the present invention is not limited to this in any way, and it is also possible to apply the present invention to other metals such as steel.
以上の如く本発明の金属表面処理剤は、刺激臭を発し有
毒であり、排水処理時に除去設備を要するフン化水素酸
を含有しないので、フン素化合物除去設備がない場所で
も使用でき、労働安全衛生上の観点から良好な作業環境
下で処理作業を行うことができる。As described above, the metal surface treatment agent of the present invention does not contain hydrofluoric acid, which emits a pungent odor and is toxic and requires removal equipment during wastewater treatment, so it can be used even in places without fluorine compound removal equipment, and is safe for labor. Processing work can be carried out in a good working environment from a sanitary perspective.
また硝酸の含有量が１０重量％未満であるから毒物及び
劇物取締法による毒物及び劇物に指定されず、毒物劇物
取扱責任者を配置する必要もな（、管理及び取扱が非常
に簡便である。In addition, since the content of nitric acid is less than 10% by weight, it is not designated as a poisonous or deleterious substance under the Poisonous and Deleterious Substances Control Law, and there is no need to appoint a person in charge of handling poisonous and deleterious substances. It is.
さらに本発明の金属表面処理剤は金属表面の腐食生成物
及び酸化スケールを効果的に除去し、必要以上にエツチ
ングすることがないので、滑らかで銀白色の美しい仕上
がりの金属表面を従供することができる等、本発明は優
れた効果を奏するものである。Furthermore, the metal surface treatment agent of the present invention effectively removes corrosion products and oxide scale on metal surfaces, and does not cause unnecessary etching, so it is possible to provide metal surfaces with a smooth, silvery white and beautiful finish. The present invention has excellent effects such as:
第１図（ａｌは本発明の金属表面処理剤により表面処理
したピンの金属組織を表すＳＥＭ写真、第１図（′ｂ）
は従来の金属表面処理剤により表面処理したピンの金属
組織を表すＳＥＭ写真、第２図（ａｌは本発明の金属表
面処理剤により表面処理したユニオンリングの金属組織
を表すＳＥＭ写真、第２図（ｂｌは従来の金属表面処理
剤により表面処理したユニオンリングの金属組織を表す
ＳＥＭ写真である。
特 許 出願人 西山ステンレスケミカル株式会社
代理人 弁理士 河 野 登 夫第
図
２、し・１
第
図Figure 1 (al is a SEM photograph showing the metallographic structure of a pin surface treated with the metal surface treatment agent of the present invention, Figure 1 ('b)
2 is an SEM photograph showing the metallographic structure of a pin whose surface has been treated with a conventional metal surface treating agent (al is a SEM photograph showing the metallographic structure of a union ring whose surface has been treated with the metal surface treating agent of the present invention; FIG. (BL is a SEM photograph showing the metal structure of a union ring whose surface was treated with a conventional metal surface treatment agent. Patent applicant: Nishiyama Stainless Chemical Co., Ltd. Representative Patent attorney: Noboru Kono Figures 2 and 1 figure
Claims (1)
金属表面処理剤であって、 硝酸を２〜９．９９重量％、硝酸第二鉄を５〜２０重量
％、硝酸カリウムを１〜２５重量％、硫酸第二鉄を５〜
２０重量％、スルファミン酸を５〜２０重量％、塩化ア
ンモニウムを１〜２０重量％含有することを特徴とする
金属表面処理剤。1. A metal surface treatment agent for removing corrosion products and oxide scales on metal surfaces, which contains 2 to 9.99% by weight of nitric acid, 5 to 20% by weight of ferric nitrate, 1 to 25% by weight of potassium nitrate, and sulfuric acid. 5~
20% by weight, 5 to 20% by weight of sulfamic acid, and 1 to 20% by weight of ammonium chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23829590A JPH072995B2 (en) | 1990-09-07 | 1990-09-07 | Metal surface treatment agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23829590A JPH072995B2 (en) | 1990-09-07 | 1990-09-07 | Metal surface treatment agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04120286A true JPH04120286A (en) | 1992-04-21 |
| JPH072995B2 JPH072995B2 (en) | 1995-01-18 |
Family
ID=17028073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23829590A Expired - Fee Related JPH072995B2 (en) | 1990-09-07 | 1990-09-07 | Metal surface treatment agent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH072995B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5911907A (en) * | 1995-08-30 | 1999-06-15 | Surface Tek Specialty Products, Inc. | Composition and method for stripping tin and tin-lead from copper surfaces |
| CN1081247C (en) * | 1998-08-27 | 2002-03-20 | 中国石油化工集团公司 | Process for removing deposited calcium carbonate |
| JP2007131885A (en) * | 2005-11-09 | 2007-05-31 | Nippon Steel Corp | Method for pickling steel and steel pickling liquid |
-
1990
- 1990-09-07 JP JP23829590A patent/JPH072995B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5911907A (en) * | 1995-08-30 | 1999-06-15 | Surface Tek Specialty Products, Inc. | Composition and method for stripping tin and tin-lead from copper surfaces |
| US5989449A (en) * | 1995-08-30 | 1999-11-23 | Morton International, Inc. | Composition and method for stripping tin and tin-lead from copper surfaces |
| CN1081247C (en) * | 1998-08-27 | 2002-03-20 | 中国石油化工集团公司 | Process for removing deposited calcium carbonate |
| JP2007131885A (en) * | 2005-11-09 | 2007-05-31 | Nippon Steel Corp | Method for pickling steel and steel pickling liquid |
| JP4669375B2 (en) * | 2005-11-09 | 2011-04-13 | 新日本製鐵株式会社 | Steel pickling method and steel pickling solution |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH072995B2 (en) | 1995-01-18 |
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