JPS6032714B2 - surface treated steel plate - Google Patents
surface treated steel plateInfo
- Publication number
- JPS6032714B2 JPS6032714B2 JP53080480A JP8048078A JPS6032714B2 JP S6032714 B2 JPS6032714 B2 JP S6032714B2 JP 53080480 A JP53080480 A JP 53080480A JP 8048078 A JP8048078 A JP 8048078A JP S6032714 B2 JPS6032714 B2 JP S6032714B2
- Authority
- JP
- Japan
- Prior art keywords
- film
- steel sheet
- steel plate
- treated steel
- layer
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/73—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process
- C23C22/74—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals characterised by the process for obtaining burned-in conversion coatings
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Chemical Treatment Of Metals (AREA)
Description
【発明の詳細な説明】
この発明は、鋼板に、絞り加工、抜き加工或は圧延加工
を施すときに、加工治具、たとえばダイスと素材間の強
度の摩擦に伴なう素材である鋼板と、ダイスとの金属接
触に起因して発生する競付き、かじり、擦り癖を生ぜし
めない皮膜を形成せしめた表面処理鋼板に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for drawing, punching, or rolling a steel plate using a processing jig, such as a die, which is a raw material due to friction between the material and the steel plate. The present invention relates to a surface-treated steel sheet on which a film is formed that does not cause chafing, galling, or scratching caused by metal contact with dies.
従来、燐酸処理鋼板は、燐酸亜鉛、燐酸鉄、燐酸マンガ
ンの皮膜をその表層に形成させたものである。Conventionally, phosphate-treated steel sheets have a film of zinc phosphate, iron phosphate, or manganese phosphate formed on the surface thereof.
この皮膜は、化学的反応或は電解法によって鋼板表層に
形成せしめられ、塗装下地或は潤滑補助機能として利用
されており、このような皮膜を有する鋼板は既知である
。前述の既知の燐酸処理鋼板は、表層部、たとえばＺｎ
３（Ｐ０４）２・ｎ比０の化学式で示される燐酸亜鉛皮
膜を有しており、この皮膜は、構造的にも明瞭な結晶横
造を有している処から、地鉄・皮膜間に明白な層境界を
有している点に特徴がある。このような皮膜を有する鋼
板を、絞り加工、扱き加工或は圧延加工すると、素材で
ある鋼板と加工治具、たとえば絞り若しくは扱き用ダイ
スとの間における強度の摩擦を起因して、前述の結晶性
皮膜が、結晶性であるが故に皮膜自体が容易に破壊され
ると共に、地鉄・皮膜境界層も破壊され、その結果、池
鉄とダイスが金属接触を起し、競付き、かじり、擦り癖
を生じていた。This film is formed on the surface layer of a steel plate by a chemical reaction or an electrolytic method, and is used as a coating base or as a lubrication aid, and steel plates having such a film are known. The above-mentioned known phosphoric acid-treated steel sheet has a surface layer, for example Zn
3 (P04) It has a zinc phosphate film shown by the chemical formula with a 2.n ratio of 0, and this film has clear crystal horizontal structure, so there is a gap between the base metal and the film. It is characterized by having clear layer boundaries. When a steel plate having such a film is drawn, handled, or rolled, the aforementioned crystals form due to strong friction between the raw steel plate and a processing jig, such as a drawing or handling die. Because the steel film is crystalline, the film itself is easily destroyed, and the boundary layer between the base metal and the film is also destroyed, resulting in metal contact between the pond iron and the die, resulting in friction, galling, and rubbing. I had developed a habit.
通常、鋼板を絞り加工、扱き加工或は圧延加工する場合
、有機潤滑油が適用されているけれども、前述のように
、潤滑油を保持する燐酸塩皮膜自体が破壊されるため、
有機潤滑剤は、素材と加工治具間の摩擦面に存在できず
効果的な潤滑を行ない得なかった。この発明は、上に述
べた、鋼板等の絞り加工、抜き加工といった苛酷な加工
条件の下における潤滑特性を向上せしめた表面処理鋼板
を得ること、就中、素材と加工給工具間の暁付き癖の発
生を防止し得る表面皮膜を有する表面処理鋼板を得るこ
とを目的としている。Normally, when drawing, handling, or rolling steel sheets, organic lubricating oil is applied, but as mentioned above, the phosphate film that retains the lubricating oil itself is destroyed.
Organic lubricants cannot exist on the friction surface between the material and the processing jig and cannot provide effective lubrication. The present invention aims to obtain a surface-treated steel sheet that has improved lubrication properties under severe processing conditions such as drawing and punching of steel sheets, as described above, and in particular, to provide a surface-treated steel sheet with improved lubrication properties under severe working conditions such as drawing and punching of steel sheets, and in particular, to provide a surface-treated steel sheet with improved lubricating properties under severe processing conditions such as drawing and punching of steel sheets, etc. The object of the present invention is to obtain a surface-treated steel sheet having a surface film that can prevent the occurrence of curls.
即ち、たとえば絞りと、扱き加工とを粗合せて形成する
、市販のビール缶、炭酸飲料用缶等では、通常１組のダ
イスで数十万箇の缶成形を行なう。而して、暁付き癖の
発生は、商品価値の低下はもとより、ダイス交換その他
のため、生産性、製造コストに直接的に関わり、それら
を悪化させる。この発明は、鋼板表面の上層が、非晶質
燐化合物層、下層がＦｅを含む結晶質燐化合物層の複合
皮膜を有する点によって特徴づけられる。That is, for commercially available beer cans, carbonated beverage cans, etc., which are formed by a rough combination of drawing and handling processes, hundreds of thousands of cans are usually formed using one set of dies. Therefore, the occurrence of morning sickness not only reduces the product value, but also directly affects productivity and manufacturing costs due to die exchange, etc., and worsens them. This invention is characterized in that the upper layer on the surface of the steel sheet has a composite film of an amorphous phosphorus compound layer and the lower layer has a crystalline phosphorus compound layer containing Fe.
以下に「 この発明を詳細に説明する。This invention will be explained in detail below.
既に述べたように、鋼板等に強度の絞り加工、扱き加工
或は圧延加工を加えると、素材である鋼板と、袷工具と
の間の摩擦のために、金属接触を引き起し、競付き、か
じり、擦り癖を発生する。As already mentioned, when steel plates are subjected to intense drawing, handling, or rolling, the friction between the steel plate and the lining tool causes metal contact, resulting in friction. , causing gnawing and rubbing.
これらの暁付き、かじり、擦り癖を総称して表面損傷を
する。而して、鋼板等に強度の絞り加工等を加えるに際
し、表面損傷を生ぜしめないための要諦は、素材である
鋼板等と加工治工具との間の金属接触を生ぜしめないこ
とである。この発明になる、表面処理鋼板は、かかる金
属接触を生ぜしめないように機能する表面皮膜を有する
ものである。These scratches, scratches, and scratches are collectively referred to as surface damage. Therefore, the key to not causing surface damage when subjecting a steel plate or the like to intense drawing processing or the like is to avoid metal contact between the steel plate or the like and the processing tool. The surface-treated steel sheet according to the present invention has a surface coating that functions to prevent such metal contact.
又この発明になる表面処理鋼板は、地鉄に接する側、即
ち下層の、Ｆｅを含む結晶質燐化合物層と、上層の非晶
質隣化合物層とからなる複合皮膜を有している。下層の
、Ｆｅを含む結晶質燐化合物層は、その層が鋼板表面に
強固に密着した固体皮膜（層）であり、燐酸若しくは燐
酸塩、燐化合物と、鋼との間の反応生成物として得られ
る。この皮膜は、結晶質の化合物であり、Ｆｅの含有量
の増加に伴なつて、硬くて脆い性質を示すようになるか
ら、鋼板等の扱き加工等に際しての、表面損傷抑止機能
は、上層に比較すると、小さいけれども、前述のように
、鋼板に強固に密着しさらに、上層を強固に吸着して結
局、上層を鋼板上に強固に分布せしめる、大なる機能を
有する。従って、この下層は、そう厚いものである必要
はなく、その厚さが、０．５仏肌以下０．０１山肌、好
ましくは０．０１〜０．１０仏肌の範囲である。次に、
上層について述べる。上層の非晶質鱗化合物皮膜は、下
層の結晶質燐化合物皮膜に強固に密着した固体潤滑皮膜
である。この上層の非晶質燐化合物皮膜は、固体状の非
晶質物質であるため、粘性に富み、しかも強固であるか
ら鋼板等の素材と加工用浴工具間の摩擦面における流動
性がよく、素材と加工用捨工具の金属接触をよく防止す
る。従って、この上層皮膜は、厚い程表面損傷抑止に寄
与する。Further, the surface-treated steel sheet of the present invention has a composite coating consisting of a crystalline phosphorus compound layer containing Fe on the side in contact with the base metal, that is, a lower layer, and an amorphous neighboring compound layer on the upper layer. The lower crystalline phosphorus compound layer containing Fe is a solid film (layer) tightly adhered to the surface of the steel sheet, and is obtained as a reaction product between phosphoric acid, phosphate salts, or phosphorus compounds and steel. It will be done. This film is a crystalline compound, and as the Fe content increases, it becomes harder and more brittle. Therefore, the upper layer has the ability to prevent surface damage during processing of steel plates, etc. In comparison, although it is small, as mentioned above, it has a great function of tightly adhering to the steel plate and firmly adsorbing the upper layer, ultimately distributing the upper layer firmly on the steel plate. Therefore, this lower layer does not need to be very thick, and its thickness is in the range of 0.5 to 0.01 mounds, preferably 0.01 to 0.10 mounds. next,
Let's talk about the upper layer. The upper amorphous scale compound film is a solid lubricant film that tightly adheres to the lower crystalline phosphorus compound film. This upper layer of amorphous phosphorus compound film is a solid amorphous substance, so it is highly viscous and strong, so it has good fluidity on the friction surface between the material such as a steel plate and the processing bath tool. Prevent metal contact between the material and processing tools. Therefore, the thicker the upper film, the more it contributes to suppressing surface damage.
扱き加工等で、１工程で１０％以上の断面減少を起すよ
うな厳しい成形加工においては、上層皮膜は０．０５山
肌以上の厚さを有することが好ましい。上層皮膜厚さの
上限は外観上、また成形荷重を大ならしめる等の制約か
ら１．０山肌以下に制限される。軽度の絞り加工、冷間
圧延においては、上層皮膜の厚さは、０．０１〜０．２
０ムの程度で十分に表面損傷防止機能を発揮する。次に
、本発明になる表面処理鋼板の製造方法について述べる
。本発明に係る表面処理鋼板は、鋼板表面上に燐酸アン
モニウム或は燐酸と燐酸アンモニウムの混合物を塗布し
、これを水分を殆んど含まない（低霧点の）非酸化性雰
囲気中で、２００℃以上の温度に加熱することによって
製造される。この処理過程にあって、加熱温度が低い程
、上層の非晶質皮膜の全皮膜厚さに占める割合が大きく
、下層は小さくなる。高温度（５００〜８００ｏｏ）に
加熱すると、Ｆｅとの反応が進み、下層が成長してくる
。In severe molding processes where the cross section is reduced by 10% or more in one step due to handling, etc., it is preferable that the upper layer film has a thickness of 0.05 mounds or more. The upper limit of the thickness of the upper layer film is limited to 1.0 mound or less due to the appearance and constraints such as increasing the molding load. In light drawing and cold rolling, the thickness of the upper layer is 0.01 to 0.2.
The surface damage prevention function is sufficiently exhibited at a level of 0. Next, a method for manufacturing a surface-treated steel sheet according to the present invention will be described. The surface-treated steel sheet according to the present invention is produced by coating ammonium phosphate or a mixture of phosphoric acid and ammonium phosphate on the surface of the steel sheet, and applying this to a non-oxidizing atmosphere containing almost no moisture (low fog point) for 200 min. Produced by heating to temperatures above ℃. In this treatment process, the lower the heating temperature, the larger the ratio of the upper amorphous film to the total film thickness, and the smaller the lower layer. When heated to a high temperature (500 to 800 oo), the reaction with Fe progresses and the lower layer grows.
このようにして得られた表面処理鋼板は、皮膜、殊に上
層の非晶質燐化合物層によって表面損傷を防止するけれ
ども、さらに十分な防錆能及び摩擦係数の低下能を付与
することが扱き加工等に供するために必要である。Although the surface-treated steel sheet obtained in this way prevents surface damage by the coating, especially the upper amorphous phosphorus compound layer, it is necessary to further impart sufficient rust prevention ability and the ability to reduce the coefficient of friction. Necessary for processing, etc.
従ってこの発明になる表面処理鋼板を実用に供するに際
しては、貯蔵、輸送期間中の発生防止のための有機防錆
油を、また摩擦係数を低下させ、成形性の向上、加工動
力（ェネルギ）の減少等の目的のためには、有機潤滑油
を塗布することが望ましい。次に本発明鋼板は実用的に
は最表面に防錆油又は潤滑油を塗布して使用されるので
あるが、本発明鋼板を使用するものはＤＩ成形後の脱脂
にも全く問題がないことを示している。Therefore, when putting the surface-treated steel sheet of this invention into practical use, it is necessary to add organic anti-corrosion oil to prevent corrosion during storage and transportation, and to lower the coefficient of friction, improve formability, and reduce machining power (energy). For purposes such as reduction, it is desirable to apply an organic lubricant. Next, although the steel sheet of the present invention is practically used by applying rust preventive oil or lubricating oil to the outermost surface, the steel sheet of the present invention has no problem with degreasing after DI forming. It shows.
即ち第１表は本発明鋼板（Ｐ：０．１５タ′わ）をＤＩ
成形したもので、番号１〜３はＤ．０．Ｓ、番号４〜６
はＡ．Ｔ．Ｂ．Ｃ、比較材として＃２５ブリキにＤ．０
．Ｓ（０．２夕／Ｂ．Ｂ）塗布したもの）水漏性試験結
果を示したものである。試験法は３％アルカリ溶液（６
５ｑｏ）をＤＩ缶内外面に２．０ｋ９／嫌の圧力でスプ
レィ洗総し、水漏れ部分の％を目視観察する。ちなみに
、実用洗糠条件は６伍ｅＣである。That is, Table 1 shows the DI of the steel plate of the present invention (P: 0.15 mm).
They are molded, and numbers 1 to 3 are D. 0. S, number 4-6
is A. T. B. C. D. on #25 tin plate as comparison material. 0
．． The results of the water leakage test are shown. The test method is 3% alkaline solution (6
5qo) was sprayed onto the inner and outer surfaces of the DI can at a pressure of 2.0k9/h, and visually observed the percentage of water leakage. By the way, the practical washing condition is 6 eC.
第１表 ＤＩ成形缶の脱脂性○・・・全面漏れ
△・・・部分漏れ（漏れ８０％）
×，．． 〃 （〃 ５０多以下）
第１表に示すように本発明鋼板は時間が経つと全面漏れ
る様になり脱脂が十分行える事を示している。Table 1: Degreasing properties of DI molded cans ○... Full leakage △... Partial leakage (leakage 80%) ×,. ．． (<50% or less) As shown in Table 1, the steel sheet of the present invention begins to leak over the entire surface over time, indicating that degreasing can be performed satisfactorily.
第１図は本発明鋼板におけるＰ付着量とＤＩ成形性との
関係を示すものであって、Ｐく０．０６夕／めでは１組
のＤＩ成形ダイスで連続１００００缶の成形しか出来な
いが、０．０７タノ力以上では１万缶以上の大量連続成
形が可能であることを示している。Figure 1 shows the relationship between the amount of P deposited and the DI formability of the steel sheet of the present invention. At P of 0.06 m/m, only 10,000 cans can be continuously formed with one set of DI forming dies. , 0.07 force or more indicates that continuous molding of 10,000 cans or more is possible.
以下本発明の実施例を述べる。実施例 １
表面を清浄にした０．３４肋の袷延鋼板上に５の９／ｄ
での燐酸１水素２アンモニウムを塗布し、日２６％ｄｅ
ｗｐｏｉｎｔ−２５℃、残部Ｎ２の雰囲気中にて７００
℃、３瓜ｅｃ加熱した。Examples of the present invention will be described below. Example 1 9/d of 5 was placed on a rolled steel plate of 0.34 ribs with a cleaned surface.
Apply diammonium monohydrogen phosphate at 26% de
700 at wpoint -25℃, balance N2 atmosphere
The mixture was heated at 3°C for 3 hours.
このようにして形成した皮膜を有する鋼板〔Ｐとして１
．１７の９／ｄの（０．１１７タ′力）〕を調質圧延後
、鉱物油を主成分とする潤滑油を塗布し、「絞り→再絞
り→＃１しごき→＃２しごき→＃３しごき」工程で約６
５０径の市販ビール缶と同一寸法の缶成形を１セットの
ダイスで１００００缶成形したが何ら特記すべき表面損
傷の発生は認められなかった。A steel plate having a film formed in this way [P is 1
．． 9/d of 17 (0.117 ta' force)], then apply lubricating oil mainly composed of mineral oil, and then perform the following steps: "Drawing → Re-drawing → #1 ironing → #2 ironing → #3 Approximately 6 in the "Ishigoki" process
A total of 10,000 cans with the same dimensions as 50-diameter commercially available beer cans were molded using one set of dies, but no notable surface damage was observed.
それに対し、無処理鋼板は２〜３個の成形で激しいかじ
り癖が発生し、実用性が全くないものであった。尚成型
の干瓢略条件は次の通り。On the other hand, the untreated steel sheet showed severe galling after forming two or three pieces, and was completely impractical. The general conditions for molding are as follows.
ブランク径１３５柵０→絞り８５少→再絞り６６？→＃
１しごさ（２０％）→＃２しごき（３０％）＃３しごき
（３０％）ダイス材質 超硬合金
／ぐンチ″ 〃
実施例 ２
０．８側厚の自動車用高度冷延鋼板（引張り強さ５０ｋ
９／桝クラス）上に燐酸と燐酸アンモニウムの混合液を
０．８の９′ｄで塗布後３００℃加熱（日２１０％、ｄ
ｅｗｐｏｉｎｔ−３０午○残Ｎ２）したものを実施例１
と同様の皮膜熔解試験を行った所、下層のＦｅを含む層
は全体の１／１０程度で残りはＦｅを含まない非晶質燐
酸化物皮膜であった。Blank diameter 135 fence 0 → aperture 85 small → re-aperture 66? →#
1 ironing (20%) → #2 ironing (30%) #3 ironing (30%) Die material Cemented carbide/gunchi'' 〃 Example 2 0.8 side thickness advanced cold rolled steel plate for automobiles (tensile Strength 50k
After coating a mixture of phosphoric acid and ammonium phosphate at 9'd of 0.8 on 9/masu class), heating at 300°C (day 210%, d
Example 1: ewpoint-30pm
When a similar film melting test was conducted, the lower layer containing Fe was about 1/10 of the total, and the rest was an amorphous phosphorus oxide film containing no Fe.
この材質を工具鋼の絞りダイスを用いて１０００（絞り
比１．８）のカップ成形を行なった。（潤滑油 日本工
作油＃６２Ｍ吏用）無処理板では３０〜６の固成形した
所で表面損傷の発生が見られたが、本発明鋼板では５０
０個の成形でも異常なく成形可能であった。This material was formed into a cup of 1000 (drawing ratio 1.8) using a tool steel drawing die. (Lubricating oil: Japan oil #62M) In the untreated sheet, surface damage was observed at 30 to 6 hard-formed parts, but in the steel sheet of the present invention, surface damage was observed at 50 to 6.
It was possible to mold even 0 pieces without any abnormality.
第１図はｐ付着量とＤＩ成形性との関係を示すものであ
る。
券１図FIG. 1 shows the relationship between p adhesion amount and DI formability. Ticket 1 diagram
Claims (1)
ンモニウムの混合液を塗布し、これを水分を殆んど含ま
ない非酸化性ガス雰囲気中で２００℃以上に加熱して得
られる。 少くとも、鋼板の地鉄に接する側にＦｅを含む結晶性燐
化合物皮膜を有するとともに、上層に非晶質燐化合物を
有することを特徴とする表面処理鋼板。[Claims] 1. Obtained by applying ammonium phosphate or a mixture of phosphoric acid and ammonium phosphate to the surface of a steel plate and heating this to 200°C or higher in a non-oxidizing gas atmosphere containing almost no moisture. . A surface-treated steel sheet, characterized in that it has a crystalline phosphorus compound film containing Fe on at least the side of the steel sheet that is in contact with a base metal, and has an amorphous phosphorus compound on the upper layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53080480A JPS6032714B2 (en) | 1978-07-04 | 1978-07-04 | surface treated steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53080480A JPS6032714B2 (en) | 1978-07-04 | 1978-07-04 | surface treated steel plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS558439A JPS558439A (en) | 1980-01-22 |
| JPS6032714B2 true JPS6032714B2 (en) | 1985-07-30 |
Family
ID=13719429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53080480A Expired JPS6032714B2 (en) | 1978-07-04 | 1978-07-04 | surface treated steel plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6032714B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60140309U (en) * | 1984-02-27 | 1985-09-17 | 日本電信電話株式会社 | broadband flat cable |
| WO2006061155A2 (en) | 2004-12-09 | 2006-06-15 | Bayer Healthcare Ag | Stabilisation of glucocorticoid esters with acids |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57165115A (en) * | 1981-04-02 | 1982-10-12 | Nippon Steel Corp | Processing method for steel plate |
| JPS60177185A (en) * | 1984-02-22 | 1985-09-11 | Kobe Steel Ltd | Method for lubricating steel wire |
-
1978
- 1978-07-04 JP JP53080480A patent/JPS6032714B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60140309U (en) * | 1984-02-27 | 1985-09-17 | 日本電信電話株式会社 | broadband flat cable |
| WO2006061155A2 (en) | 2004-12-09 | 2006-06-15 | Bayer Healthcare Ag | Stabilisation of glucocorticoid esters with acids |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS558439A (en) | 1980-01-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101849480B1 (en) | Vehicle component and vehicle component manufacturing method | |
| JP5957015B2 (en) | Steel plate product, steel plate product manufacturing method and component manufacturing method | |
| JP3663145B2 (en) | A method for producing molded parts with extremely high mechanical property values by stamping from strips of coated rolled steel sheets, especially coated hot rolled steel sheets | |
| CA2758629C (en) | Method of producing a steel component provided with a metallic coating giving protection against corrosion, and a steel component | |
| CN101849029B (en) | Flat steel product with an anti-corrosion metallic coating, and process for producing an anti-corrosion metallic Zn-Mg coating on a flat steel product | |
| WO2010089273A1 (en) | Method for producing a coated steel component by means of hot forming and steel component produced by means of hot forming | |
| US4199381A (en) | Preparation of metals for cold forming | |
| EP0208443B1 (en) | Vibration-damping composite sheet steel | |
| TW201402803A (en) | Water-soluble lubricating agent for plastic working, metal material for plastic working, and worked metal article | |
| US5209860A (en) | Acrylate polymer-fatty triglyceride aqueous dispersion prelubes for all metals | |
| CN114150252B (en) | Plated hot-formed steel plate, hot-stamped part with excellent adhesive property, manufacturing method and application | |
| JPS6032714B2 (en) | surface treated steel plate | |
| US4235947A (en) | Method for the manufacture of a steel sheet adapted for use in ironing processing having good lubrication property | |
| US4285223A (en) | Phosphate and ester coating method | |
| JP3932823B2 (en) | Lubricated steel sheet with excellent chemical conversion and adhesion | |
| US3288655A (en) | Phosphating a steel strip prior to anealing and temper rolling | |
| JP2803566B2 (en) | Alloyed galvanized steel sheet with excellent film destruction resistance | |
| JPH06330077A (en) | Lubricant for cryogenic temperature working of aluminum and its alloy and method for cryogenic temperature working | |
| CA1044123A (en) | Cold rolled steel strip | |
| CN113817973B (en) | Surface treatment liquid for improving surface oxidation and coating performance of alloyed galvanized hot forming steel, hot forming steel plate, preparation method and application | |
| JP3133235B2 (en) | Steel plate for fuel tank with excellent workability | |
| JPS6233785A (en) | Pretreatment for painting of steel product | |
| JP3571753B2 (en) | High-rigidity surface-treated thin steel sheet for drawing or drawing and ironing cans | |
| JPH0247269A (en) | Cold rolled steel sheet having excellent mold galling resistance and production thereof | |
| JP3273759B2 (en) | Galvanized steel sheet with excellent lubricity |