JPH054303A - Vibration damping steel sheet excellent in processability - Google Patents
Vibration damping steel sheet excellent in processabilityInfo
- Publication number
- JPH054303A JPH054303A JP3181898A JP18189891A JPH054303A JP H054303 A JPH054303 A JP H054303A JP 3181898 A JP3181898 A JP 3181898A JP 18189891 A JP18189891 A JP 18189891A JP H054303 A JPH054303 A JP H054303A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- steel sheet
- chromic acid
- processability
- weldability
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 68
- 239000010959 steel Substances 0.000 title claims abstract description 68
- 238000013016 damping Methods 0.000 title claims abstract description 24
- 239000011347 resin Substances 0.000 claims abstract description 58
- 229920005989 resin Polymers 0.000 claims abstract description 58
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 claims abstract description 25
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910000576 Laminated steel Inorganic materials 0.000 claims abstract description 11
- 230000008021 deposition Effects 0.000 claims description 10
- 239000000805 composite resin Substances 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 abstract description 10
- 230000001070 adhesive effect Effects 0.000 abstract description 10
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 239000011651 chromium Substances 0.000 description 27
- 238000003466 welding Methods 0.000 description 15
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 12
- 229910052804 chromium Inorganic materials 0.000 description 12
- 230000007797 corrosion Effects 0.000 description 10
- 238000005260 corrosion Methods 0.000 description 10
- 239000007788 liquid Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000010960 cold rolled steel Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Landscapes
- Resistance Welding (AREA)
- Laminated Bodies (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は鋼板の間に樹脂層を介在
させた制振鋼板に関し、特に加工性と更には溶接性の優
れた制振鋼板に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration-damping steel plate having a resin layer interposed between steel plates, and more particularly to a vibration-damping steel plate having excellent workability and weldability.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】近年、
制振鋼板の用途が拡大するに伴って、要求品質が高度化
してきている。例えば、製品形状が複雑化するに伴っ
て、制振鋼板に高い加工性が要求されるようになってき
ている。制振鋼板の加工性は、鋼板の加工性と樹脂特
性、特に樹脂強度と鋼板との接着性に大きく左右される
ことが知られており、このため、従来より、接着性の高
い樹脂が種々提案されている。また、鋼板と樹脂界面の
耐食性及び接着性を改善する手段として、通常のクロメ
ート処理が提案されている。しかし、それによっても充
分な接着性が得られるとはいい難い。2. Description of the Related Art In recent years,
As the applications of damping steel sheets expand, the required quality is becoming more sophisticated. For example, as the product shape becomes more complicated, the vibration-damping steel sheet is required to have high workability. It is known that the workability of a vibration-damping steel sheet is greatly influenced by the workability of the steel sheet and the resin characteristics, particularly the resin strength and the adhesiveness with the steel sheet. Proposed. Further, as a means for improving the corrosion resistance and the adhesiveness between the steel plate and the resin interface, a usual chromate treatment has been proposed. However, it is difficult to say that sufficient adhesiveness can be obtained even by doing so.
【０００３】一方、自動車パネル用途で代表されるよう
に、スポット溶接によって組立られる部品への制振鋼板
の適用が進んでおり、樹脂に導電性を付与した制振鋼板
が用いられるようになってきた。しかし、この種の樹脂
に導電性を付与した制振鋼板の場合、接着性と耐食性を
向上させるためにクロム酸下地処理を行うと、鋼板と導
電物質との接触抵抗が高くなり、スポット溶接不良が多
発するという欠点があった。On the other hand, as represented by automobile panel applications, vibration-damping steel plates are being applied to parts assembled by spot welding, and vibration-damping steel plates made of resin with conductivity have come to be used. It was However, in the case of a vibration-damping steel plate with conductivity added to this type of resin, if a chromic acid undercoat treatment is performed to improve adhesion and corrosion resistance, the contact resistance between the steel plate and the conductive material increases, resulting in poor spot welding. There was a drawback that was frequent.
【０００４】本発明は、上記従来技術の欠点を解消し
て、加工性が優れ、更には加工性と溶接性が優れた制振
鋼板を提供することを目的とするものである。An object of the present invention is to solve the above-mentioned drawbacks of the prior art and to provide a vibration-damping steel sheet which is excellent in workability, and further excellent in workability and weldability.
【０００５】[0005]
【課題を解決するための手段】前記課題を解決するた
め、本発明者らは、制振鋼板の用途拡大に伴って、より
優れた加工性、耐食性及びより安定したスポット溶接性
が要求され状況のもとで、斬新な方策を見い出すべく鋭
意研究を重ねた。In order to solve the above-mentioned problems, the inventors of the present invention are required to have better workability, corrosion resistance and more stable spot weldability as the applications of vibration-damping steel sheets expand. Under the circumstances, he conducted extensive research to find a novel strategy.
【０００６】その結果、樹脂積層鋼板において、少なく
とも樹脂と接する鋼板面にクロム酸と樹脂を複合した処
理液によって下地処理し積層することによって、従来の
クロム酸下地処理に比較して優れた接着性と耐食性を付
与できることを見い出した。As a result, in the resin laminated steel sheet, at least the surface of the steel sheet in contact with the resin is subjected to the base treatment with the treatment liquid containing the chromic acid and the resin, and the laminate is laminated, so that the adhesiveness superior to the conventional chromic acid base treatment is obtained. And found that corrosion resistance can be imparted.
【０００７】また、導電性を付与した樹脂層を介在せし
める樹脂積層鋼板の場合は、接着性と耐食性を向上させ
るために従来のクロム酸下地処理を行うと、鋼板と導電
物質との接触抵抗が高くなり、スポット溶接不良が多発
することから、接着性、耐食性とスポット溶接性を両立
させ得る方法を種々検討した結果、クロム酸と樹脂を複
合した処理液で、Ｃr付着量が２０mg／m2以下であれ
ば、接着性や耐食性が優れていると共に、スポット溶接
性も安定していることを見い出し、ここに本発明を完成
したものである。Further, in the case of a resin-laminated steel sheet having a resin layer having conductivity added thereto, if a conventional chromic acid base treatment is performed in order to improve adhesion and corrosion resistance, the contact resistance between the steel sheet and the conductive material is reduced. Since it becomes high and spot welding defects occur frequently, various examinations have been made on various methods capable of achieving both adhesiveness, corrosion resistance and spot weldability. As a result, a treatment liquid in which chromic acid and a resin are combined has a Cr deposition amount of 20 mg / m 2 In the following cases, it was found that the adhesiveness and the corrosion resistance are excellent and the spot weldability is also stable, and the present invention is completed here.
【０００８】すなわち、本発明は、２枚の鋼板の間に樹
脂層を介在せしめた樹脂積層鋼板において、少なくとも
樹脂と接する鋼板面に、クロム酸・樹脂複合処理皮膜が
形成されていることを特徴とする加工性の優れた制振鋼
板を要旨とするものである。That is, the present invention is characterized in that, in a resin laminated steel sheet in which a resin layer is interposed between two steel sheets, a chromic acid / resin composite treatment film is formed on at least the steel sheet surface in contact with the resin. The gist is a vibration-damping steel plate with excellent workability.
【０００９】また、他の本発明は、２枚の鋼板の間に導
電性を付与した樹脂層を介在せしめた樹脂積層鋼板にお
いて、少なくとも樹脂と接する鋼板面に、クロム酸・樹
脂複合処理皮膜が形成されており、かつＣr付着量が２
０mg／m2以下であることを特徴とする加工性及び溶接性
の優れた制振鋼板を要旨とするものである。Further, according to another aspect of the present invention, in a resin laminated steel sheet in which a resin layer having conductivity is interposed between two steel sheets, a chromic acid / resin composite treatment film is formed on at least the steel sheet surface in contact with the resin. Is formed and the Cr deposition amount is 2
The gist is a vibration-damping steel plate excellent in workability and weldability, which is characterized by being 0 mg / m 2 or less.
【００１０】以下に本発明を更に詳細に説明する。The present invention will be described in more detail below.
【００１１】本発明においては、樹脂積層鋼板の少なく
とも樹脂と接する側の鋼板面に、クロム酸と樹脂を複合
した処理液によって下地処理を施し、該鋼板面にクロム
酸・樹脂複合皮膜を形成するもので、しかる後に樹脂を
積層する。これにより、鋼板と積層する樹脂との接着性
(加工性)が向上すると共に耐食性も良く、更にはＣr付
着量を増加させても優れた溶接性が確保できる。In the present invention, at least the steel sheet surface of the resin laminated steel sheet that is in contact with the resin is subjected to a base treatment with a treatment liquid that combines chromic acid and a resin to form a chromic acid / resin composite film on the steel sheet surface. Then, the resin is laminated. As a result, the adhesiveness between the steel plate and the resin to be laminated
(Workability) is improved, corrosion resistance is also good, and even if the Cr deposition amount is increased, excellent weldability can be secured.
【００１２】従来、クロム酸単独処理では、接着強度を
得るにはＣr付着量をある程度増加しないと得られなか
った。この点、クロム酸と樹脂の複合処理によれば、よ
り少ないＣr付着量で高い接着強度が確保でき、またＣr
付着量を増加しても従来よりも高い接着強度が維持でき
る。Conventionally, chromic acid alone treatment could not be obtained in order to obtain the adhesive strength unless the Cr deposition amount was increased to some extent. In this respect, the combined treatment of chromic acid and resin makes it possible to secure a high adhesive strength with a smaller Cr adhesion amount, and
Even if the amount of adhesion is increased, higher adhesive strength than before can be maintained.
【００１３】一方、従来、クロム酸単独処理では、安定
したスポット溶接性を確保するためには、Ｃr付着量を
非常に少量にする必要があった。しかし、Ｃr付着量を
少なくすると接着強度が低下するという相反する問題点
があった。この点、クロム酸と樹脂の複合処理によれ
ば、スポット溶接性を確保するためのＣr付着量が２０m
g／m2まで可能である。Ｃr付着量が増加できるので、下
地処理が容易であると共に、耐食性においても安定度が
高い。勿論、この範囲のＣr付着量で高い接着強度を確
保できる。On the other hand, conventionally, in the case of chromic acid alone treatment, it has been necessary to make the Cr deposition amount extremely small in order to secure stable spot weldability. However, there is a contradictory problem that the adhesive strength is reduced when the Cr adhesion amount is reduced. In this respect, according to the composite treatment of chromic acid and resin, the Cr adhesion amount for securing spot weldability is 20 m.
It is possible up to g / m 2 . Since the amount of deposited Cr can be increased, the surface treatment is easy and the corrosion resistance is also high. Of course, a high adhesion strength can be secured with the Cr adhesion amount in this range.
【００１４】これは、クロム酸と樹脂の複合処理の場
合、鋼板表面に形成されるクロム酸皮膜は樹脂が存在す
るので不均一であるため、鋼板と導電物質との接着抵抗
の増加が抑えられること及びスポット溶接時の初期電流
によるクロム酸皮膜の破壊がクロム酸単独処理皮膜に比
べ容易に起こり、その結果として、安定したスポット溶
接性が確保されるものと考えられる。This is because in the case of the composite treatment of chromic acid and resin, the chromic acid film formed on the steel plate surface is non-uniform because of the presence of the resin, so that the increase in the adhesive resistance between the steel plate and the conductive substance is suppressed. It is considered that the chromic acid film is more easily broken by the initial current during spot welding than the chromic acid alone-treated film, and as a result, stable spot weldability is secured.
【００１５】クロム酸と樹脂を複合した処理液として
は、クロム酸と適当な樹脂を種々の割合(全クロムのＣr
Ｏ3換算値に対する比)で添加した処理液で良い。複合添
加される樹脂は特に限定されず、また水溶性樹脂、コロ
イド状樹脂など広範囲な樹脂により複合添加効果が認め
られる。As a treatment liquid in which chromic acid and a resin are combined, chromic acid and an appropriate resin are mixed in various ratios (Cr of total chromium).
A treatment liquid added in the ratio of O 3 conversion value) may be used. The resin to be added in combination is not particularly limited, and a wide range of resins such as a water-soluble resin and a colloidal resin exhibit a combined addition effect.
【００１６】本発明における鋼板は特に限定されるもの
ではなく、冷延鋼板、電気Ｚnメッキ鋼板、電気複合メ
ッキ鋼板、溶融Ｚnメッキ鋼板、合金化溶融Ｚnメッキ鋼
板及びその他のメッキ鋼板、またステンレス鋼板も適用
できる。また、鋼板の間に介在させる粘弾性樹脂も特に
限定されるものではなく、熱可塑性樹脂、熱硬化性樹脂
が可能であり、またフィルム型、塗布型も可能である。
導電性を付与する材料も特に限定されないことは云うま
でもない。更に、２枚の鋼板の間に樹脂を介在させる積
層法も特に制限されない。The steel sheet according to the present invention is not particularly limited, and includes cold rolled steel sheet, electric Zn plated steel sheet, electric composite plated steel sheet, hot dip Zn plated steel sheet, alloyed hot dip Zn plated steel sheet and other plated steel sheets, and stainless steel sheet. Can also be applied. Further, the viscoelastic resin to be interposed between the steel sheets is not particularly limited, and may be a thermoplastic resin or a thermosetting resin, and may be a film type or a coating type.
It goes without saying that the material that imparts conductivity is not particularly limited. Further, the laminating method in which the resin is interposed between the two steel plates is not particularly limited.
【００１７】次に本発明の実施例を示す。Next, examples of the present invention will be described.
【００１８】[0018]
【実施例１】
０.４mm厚の冷延鋼板を使用し、脱脂処理後、鋼板の接
着面に全クロムに対する３価クロムの比が１：０.４で
あるクロム酸と、全クロムのＣrＯ3換算値に対してリン
酸を０.１及び水溶性樹脂を１含有する処理液を塗布
し、乾燥して、クロム付着量１.５〜４９mg／m2の鋼板
を得、次いで粘弾性樹脂(本例の場合、ポリオレフィン
を使用)を用いて積層し、制振鋼板を作成した。Example 1 A cold-rolled steel sheet having a thickness of 0.4 mm was used, and after degreasing treatment, chromic acid having a ratio of trivalent chromium to total chromium of 1: 0.4 and CrO of total chromium on the adhesive surface of the steel sheet. A treatment liquid containing 0.1 of phosphoric acid and 1 of water-soluble resin was applied to 3 conversion value, and dried to obtain a steel sheet with a chromium deposition amount of 1.5 to 49 mg / m 2 , and then a viscoelastic resin. (In the case of this example, polyolefin was used) to laminate to prepare a damping steel plate.
【００１９】また、比較材として、０.４mm厚の冷延鋼
板を脱脂処理後、鋼板の接着面にクロメート処理を施
し、クロム付着量が６〜５０mg／m2の鋼板を得、次いで
同様の粘弾性樹脂を用いて積層し、制振鋼板を作成し
た。As a comparative material, a cold-rolled steel sheet having a thickness of 0.4 mm was degreased, and then the bonding surface of the steel sheet was subjected to chromate treatment to obtain a steel sheet having a chromium deposition amount of 6 to 50 mg / m 2 , and then the same. A viscoelastic resin was used for lamination to create a damping steel plate.
【００２０】制振鋼板の加工性を表わす接着強度とＣr
付着量の関係を調べた結果を図１に示す。同図より、本
発明材は、従来のクロメート処理材に比べ、高い接着強
度、すなわち高い加工性を示していることがわかる。Adhesive strength and Cr, which represent the workability of the damping steel plate,
FIG. 1 shows the result of examining the relationship between the adhered amounts. From the figure, it can be seen that the material of the present invention exhibits higher adhesive strength, that is, higher workability than the conventional chromate-treated material.
【００２１】[0021]
【実施例２】
０.４mm厚の合金化溶融Ｚnメッキ鋼板を使用し、鋼板の
接着面に全クロムに対する３価クロムの比が１：０.４
であるクロム酸と、全クロムのＣrＯ3換算値に対してリ
ン酸を０.１及び水溶性樹脂を１含有する処理液を塗布
し、乾燥して、クロム付着量１.５〜３０.５mg／m2の鋼
板を得、次いで導電粉(Ｎi粉、添加量：３.０vol.％)入
りの粘弾性樹脂(本例の場合、ポリオレフィンを使用)を
用いて積層し、導電性付与制振鋼板を作成した。Example 2 A 0.4 mm thick alloyed Zn-plated steel sheet was used, and the ratio of trivalent chromium to total chromium was 1: 0.4 on the adhesive surface of the steel sheet.
Chromic acid which is ## STR3 ## and a treatment liquid containing 0.1 of phosphoric acid and 1 of a water-soluble resin based on the CrO 3 conversion value of all chromium are applied and dried to deposit chromium of 1.5 to 30.5 mg / M 2 steel plate was obtained, and then laminated with a viscoelastic resin (Ni powder, addition amount: 3.0 vol.%)-Containing viscoelastic resin (in this case, polyolefin was used) to impart electroconductivity A steel plate was created.
【００２２】また、比較材として、０.４mm厚の合金化
溶融Ｚnメッキ鋼板を使用し、鋼板の接着面にクロメー
ト処理を施し、クロム付着量が４.０〜２８mg／m2の鋼
板を得、次いで同様の導電粉入りの粘弾性樹脂を用いて
積層し、導電性付与制振鋼板を作成した。As a comparative material, a 0.4 mm thick alloyed Zn-plated steel sheet was used, and the bonding surface of the steel sheet was subjected to chromate treatment to obtain a steel sheet having a chromium deposition amount of 4.0 to 28 mg / m 2. Then, the same viscoelastic resin containing conductive powder was used for lamination to prepare a conductivity imparting damping steel plate.
【００２３】得られた導電性付与制振鋼板についてスポ
ット溶接性を調べた。スポット溶接試験は、制振鋼板に
とっては非常に厳しい以下のスポット溶接条件で、図２
に示す２mmの隙間付き試験片の端部溶接によって行っ
た。溶接不良率は、未通電の場合は勿論のこと、スパー
ク発生、電極周辺の溶断などでもって判定した。The spot weldability of the obtained vibration-suppressing steel sheet with conductivity was examined. The spot welding test is performed under the following spot welding conditions, which are very strict for the vibration-damping steel plate.
The welding was performed by edge welding of the test piece with a gap of 2 mm shown in FIG. The defective welding rate was determined not only when the power was not supplied, but also by the occurrence of sparks and the fusing around the electrodes.
【００２４】（溶接条件） 加圧力…１２０kgf、 溶接電流…１０.５ＫＡ(定電流制御)、 通電時間…１２サイクル。(Welding conditions) Pressurizing force ... 120kgf, Welding current: 10.5KA (constant current control), Energization time ... 12 cycles.
【００２５】スポット溶接不良とＣr付着量の関係を図
４に示す。同図で明らかなように、本発明材はクロム付
着量が２０mg／m2以下で安定したスポット溶接性が得ら
れるのに対して、従来のクロメート処理材では１０mg／
m2以下に抑える必要がある。FIG. 4 shows the relationship between defective spot welding and the Cr deposition amount. As is clear from the figure, the material of the present invention has a stable spot weldability when the amount of deposited chromium is 20 mg / m 2 or less, while the conventional chromate treated material has 10 mg / m 2.
Must be kept below m 2 .
【００２６】[0026]
【発明の効果】以上詳述したように、本発明によれば、
従来の制振鋼板よりも加工性が優れると共に耐食性も優
れ、更には溶接性も優れた制振鋼板を提供することがで
きるので、制振鋼板の用途拡大に寄与する効果は大き
い。As described in detail above, according to the present invention,
Since it is possible to provide a vibration-damping steel plate that has excellent workability, corrosion resistance, and weldability as compared with the conventional vibration-damping steel plate, the effect of contributing to expanding the applications of the vibration-damping steel plate is great.
【図１】樹脂積層鋼板の剥離強度とＣr付着量の関係を
示す図である。FIG. 1 is a diagram showing a relationship between a peel strength of a resin laminated steel sheet and a Cr adhesion amount.
【図２】スポット溶接試験に用いる試験を示す斜視図で
ある。FIG. 2 is a perspective view showing a test used in a spot welding test.
【図３】スポット溶接試験後の試験片の状態を示す図で
ある。FIG. 3 is a diagram showing a state of a test piece after a spot welding test.
【図４】樹脂積層鋼板の溶接不良率(溶接性)とＣr付着
量の関係を示す図である。FIG. 4 is a diagram showing a relationship between a welding defect rate (weldability) of a resin laminated steel sheet and a Cr adhesion amount.
フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ２３Ｃ 28/00 Ｂ 7217−4Ｋ Ｆ１６Ｆ 15/02 Ｑ 9138−3Ｊ Continuation of front page (51) Int.Cl. 5 Identification number Office reference number FI technical display location C23C 28/00 B 7217-4K F16F 15/02 Q 9138-3J
Claims (2)
樹脂積層鋼板において、少なくとも樹脂と接する鋼板面
に、クロム酸・樹脂複合処理皮膜が形成されていること
を特徴とする加工性の優れた制振鋼板。1. A workability characterized by a chromic acid / resin composite treatment film being formed on at least a steel plate surface in contact with a resin in a resin laminated steel plate in which a resin layer is interposed between two steel plates. Excellent damping steel plate.
層を介在せしめた樹脂積層鋼板において、少なくとも樹
脂と接する鋼板面に、クロム酸・樹脂複合処理皮膜が形
成されており、かつＣr付着量が２０mg／m2以下である
ことを特徴とする加工性及び溶接性の優れた制振鋼板。2. A resin laminated steel sheet in which a resin layer imparting conductivity is interposed between two steel sheets, and a chromic acid / resin composite treatment film is formed on at least the steel sheet surface in contact with the resin, and A vibration-damping steel sheet having excellent workability and weldability, which has a Cr deposition amount of 20 mg / m 2 or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3181898A JPH07100359B2 (en) | 1991-06-26 | 1991-06-26 | Damping steel plate with excellent workability and weldability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3181898A JPH07100359B2 (en) | 1991-06-26 | 1991-06-26 | Damping steel plate with excellent workability and weldability |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH054303A true JPH054303A (en) | 1993-01-14 |
| JPH07100359B2 JPH07100359B2 (en) | 1995-11-01 |
Family
ID=16108816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3181898A Expired - Lifetime JPH07100359B2 (en) | 1991-06-26 | 1991-06-26 | Damping steel plate with excellent workability and weldability |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07100359B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9217720B2 (en) | 2009-08-28 | 2015-12-22 | Shawcor Ltd | Method and apparatus for external pipeline weld inspection |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5241138A (en) * | 1975-09-30 | 1977-03-30 | Nippon Kokan Kk | Chromating process |
| JPS532358A (en) * | 1976-06-30 | 1978-01-11 | Nippon Kokan Kk | Production process for colored steel sheet |
| JPS54106587A (en) * | 1978-02-08 | 1979-08-21 | Taiyo Seiko Kk | Metal laminated steel plate |
| JPS5935683A (en) * | 1982-08-20 | 1984-02-27 | Nippon Steel Corp | Composition for treating metallic surface |
| JPH0286432A (en) * | 1988-09-22 | 1990-03-27 | Kawasaki Steel Corp | Manufacture of composite steel plate having excellent resistance welding property |
-
1991
- 1991-06-26 JP JP3181898A patent/JPH07100359B2/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5241138A (en) * | 1975-09-30 | 1977-03-30 | Nippon Kokan Kk | Chromating process |
| JPS532358A (en) * | 1976-06-30 | 1978-01-11 | Nippon Kokan Kk | Production process for colored steel sheet |
| JPS54106587A (en) * | 1978-02-08 | 1979-08-21 | Taiyo Seiko Kk | Metal laminated steel plate |
| JPS5935683A (en) * | 1982-08-20 | 1984-02-27 | Nippon Steel Corp | Composition for treating metallic surface |
| JPH0286432A (en) * | 1988-09-22 | 1990-03-27 | Kawasaki Steel Corp | Manufacture of composite steel plate having excellent resistance welding property |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9217720B2 (en) | 2009-08-28 | 2015-12-22 | Shawcor Ltd | Method and apparatus for external pipeline weld inspection |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07100359B2 (en) | 1995-11-01 |
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| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19980804 |