JPH06316027A - Nickel powder for composite steel sheet and production of composite steel sheet excellent in weldability - Google Patents
Nickel powder for composite steel sheet and production of composite steel sheet excellent in weldabilityInfo
- Publication number
- JPH06316027A JPH06316027A JP10647993A JP10647993A JPH06316027A JP H06316027 A JPH06316027 A JP H06316027A JP 10647993 A JP10647993 A JP 10647993A JP 10647993 A JP10647993 A JP 10647993A JP H06316027 A JPH06316027 A JP H06316027A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- steel sheet
- composite steel
- resin layer
- 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.)
- Pending
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、機械、建築物、乗り物
等の各種構造物の構造部材として使用される複合鋼板の
樹脂層中に含有させるニッケル粉（以下、Ni粉と記
す）、およびこのNi粉を使用した溶接性の良好な複合鋼
板の製造方法に関する。TECHNICAL FIELD The present invention relates to a nickel powder (hereinafter referred to as Ni powder) to be contained in a resin layer of a composite steel sheet used as a structural member for various structures such as machines, buildings and vehicles, and The present invention relates to a method for producing a composite steel sheet having good weldability using this Ni powder.
【０００２】[0002]
【従来の技術】近年、自動車、家電製品、建材などに関
する技術の進歩に伴って、例えば、エンジンやモーター
などから発生する騒音、振動が環境面から問題とされ、
また、建材などでは外部からの騒音、振動を効果的に低
減できることが望まれるようになってきており、騒音や
振動の発生防止あるいは軽減が社会的な要請としてクロ
ーズアップされている。そのため、２枚の鋼板の間に樹
脂層を挟んだ制振性に優れた複合鋼板の利用が拡大して
いる。また、これら制振鋼板の他にも、鋼板の間に樹脂
層を介在させることにより、軽量化した複合鋼板、ある
いは断熱性等に優れた複合鋼板など、従来の鋼板にはな
い機能を備えた複合鋼板が開発され、多くの分野で広範
囲に使用されつつある。2. Description of the Related Art In recent years, with the progress of technology related to automobiles, home appliances, building materials, etc., for example, noise and vibration generated from engines and motors have become environmental problems,
Further, it has been desired to effectively reduce noise and vibration from the outside of building materials and the like, and prevention or reduction of noise and vibration has been highlighted as a social demand. Therefore, the use of composite steel sheets having a resin layer sandwiched between two steel sheets and having excellent vibration damping properties is expanding. In addition to these vibration-damping steel plates, by interposing a resin layer between the steel plates, it has a function not found in conventional steel plates, such as a lightweight composite steel plate or a composite steel plate with excellent heat insulating properties. Composite steel sheets have been developed and are being used extensively in many fields.
【０００３】このような鋼板の間に樹脂層を介在させた
複合鋼板においては、スポット溶接を可能にするため、
一般に樹脂層中に導電性フィラーとして金属粒子を含有
させている。例えば、特開昭63−188040号公報には、金
属粒子としてNi粉を用いた可溶接制振鋼板とその製造方
法が提案され、また、特公平４−14872 号公報には外層
金属材料より軟質な金属粒子を樹脂層に配合したスポッ
ト溶接可能な複合型制振材料が開示されている。さら
に、特開平３−47749 号公報には金属粒子の硬さと表皮
鋼板の硬さの比を限定した抵抗溶接可能型制振鋼板が開
示されている。In order to enable spot welding in a composite steel sheet in which a resin layer is interposed between such steel sheets,
Generally, the resin layer contains metal particles as a conductive filler. For example, JP-A-63-188040 proposes a weldable vibration-damping steel sheet using Ni powder as metal particles and a method for manufacturing the same, and JP-B-4-14872 discloses a softer steel sheet than an outer layer metal material. A composite damping material capable of spot welding in which various metal particles are mixed in a resin layer is disclosed. Further, Japanese Patent Laid-Open No. 3-47749 discloses a resistance-weldable type damping steel plate in which the ratio of the hardness of metal particles to the hardness of skin steel plate is limited.
【０００４】これらの従来技術にみられるように、樹脂
層中に含有させる金属粒子の硬度、粒径、含有量等を適
正な範囲に限定すれば、２枚の鋼板の間に樹脂層を挟ん
だ複合鋼板であっても良好な溶接性が得られる。樹脂層
に添加される金属粒子（例えば、Ni粉）の粒径は、通
常、30〜100 μｍである。粒径の上限は一般に樹脂層の
厚さによって規定され、一方、下限は溶接性の観点から
規定される。すなわち、樹脂層の厚さに対して粒径が小
さすぎると溶接時に鋼板とNi粉が接触する確率が低下
し、十分な溶接性を得ることが困難となる。As seen in these prior arts, if the hardness, particle size, content, etc. of the metal particles contained in the resin layer are limited to appropriate ranges, the resin layer is sandwiched between two steel plates. Even with the composite steel sheet, good weldability can be obtained. The particle size of the metal particles (for example, Ni powder) added to the resin layer is usually 30 to 100 μm. The upper limit of the particle size is generally defined by the thickness of the resin layer, while the lower limit is defined by the weldability. That is, if the particle size is too small with respect to the thickness of the resin layer, the probability that the steel sheet and Ni powder will come into contact during welding will decrease, and it will be difficult to obtain sufficient weldability.
【０００５】上記の複合鋼板の製造方法としては、フイ
ルム方式と塗布方式がある。前者はあらかじめ樹脂フイ
ルムとして形成されたものを２枚の鋼板の間に挟んで樹
脂層とする方式であり、後者は樹脂組成物の溶液をロー
ルコーター等により２枚の鋼板の少なくとも一方の表面
に塗布し、塗布面を内側にしてそれらの鋼板を重ね合わ
せる方式である。As a method of manufacturing the above composite steel sheet, there are a film method and a coating method. The former is a method in which a resin film formed in advance is sandwiched between two steel plates to form a resin layer, and the latter is a solution of the resin composition applied to at least one surface of the two steel plates by a roll coater or the like. It is a method of coating and stacking these steel plates with the coated surface inside.
【０００６】前者のフイルム方式の場合、樹脂層へのNi
粉の均一な添加に大きな問題はない。しかし、後者の塗
布方式の場合、粒径が30〜100 μｍのNi粉を用いると、
Ni粉は比重が大きいため塗布前に予め調整した樹脂組成
物を含む溶液中で均一に分散せずに沈降しやすく、樹脂
層中に所定量のNiを含有させるためには、樹脂組成物含
有溶液中にNi粉を過剰に含有させなければならないの
で、Ni歩留りの低下を招く。Ni粉の粒径を小さくすれば
沈降を抑制することができるが、前述のように溶接性が
低下するので、それのみでは問題を解決することはでき
ない。In the former film method, Ni on the resin layer is
There is no major problem with the uniform addition of powder. However, in the case of the latter coating method, when Ni powder with a particle size of 30 to 100 μm is used,
Since Ni powder has a large specific gravity, it does not uniformly disperse in a solution containing a resin composition preliminarily adjusted before coating and easily settles, and in order to contain a predetermined amount of Ni in the resin layer, a resin composition-containing Since Ni powder must be contained in excess in the solution, Ni yield is lowered. If the particle size of the Ni powder is reduced, sedimentation can be suppressed, but since the weldability deteriorates as described above, this alone cannot solve the problem.
【０００７】近年、耐熱性あるいは耐久性等に優れた高
性能な複合鋼板の開発が進み、樹脂層として熱可塑性樹
脂に代わって架橋構造を有する熱硬化性樹脂が使用され
るケースが増えている。この熱硬化性樹脂を使用して複
合鋼板を製造するには、熱硬化性樹脂組成物を溶媒に溶
解した後ロールコーター等で鋼板表面に塗布するのが一
般的であり、溶接性の良好な複合鋼板とする場合は、樹
脂組成物含有溶液中に粒径が樹脂層の厚さよりも大きい
導電性フィラーを分散させて樹脂と共に鋼板上に供給す
る方式が採られる。しかし、導電性フィラーとしてNi粉
を用いると、上記のように歩留りが低下し、製造コスト
が嵩むので、非常に大きな問題となっていた。In recent years, development of high-performance composite steel sheets having excellent heat resistance or durability has progressed, and in many cases, a thermosetting resin having a crosslinked structure is used as the resin layer instead of the thermoplastic resin. . In order to produce a composite steel sheet using this thermosetting resin, it is common to dissolve the thermosetting resin composition in a solvent and then apply it to the steel sheet surface with a roll coater or the like, which has good weldability. In the case of forming a composite steel sheet, a method is used in which a conductive filler having a particle diameter larger than the thickness of the resin layer is dispersed in a solution containing a resin composition and the conductive filler is supplied onto the steel sheet together with the resin. However, when Ni powder is used as the conductive filler, the yield is lowered and the manufacturing cost is increased as described above, which is a very serious problem.
【０００８】[0008]
【発明が解決しようとする課題】本発明は、２枚の鋼板
の間に樹脂層を有する複合鋼板を塗布方式で製造する際
に、上記の問題がなく、鋼板表面に塗布する前の樹脂組
成物含有溶液中に均一に分散させることが可能なNi粉、
およびこのNi粉を用いた溶接性の良好な複合鋼板の製造
方法を提供することを課題としてなされたものである。DISCLOSURE OF THE INVENTION The present invention does not have the above-mentioned problems when a composite steel sheet having a resin layer between two steel sheets is manufactured by a coating method, and has a resin composition before being coated on the surface of the steel sheet. Ni powder that can be uniformly dispersed in the substance-containing solution,
Another object of the present invention is to provide a method for manufacturing a composite steel sheet having good weldability using this Ni powder.
【０００９】[0009]
【課題を解決するための手段】鋼板表面に塗布する前の
樹脂組成物含有溶液中におけるNi粉の沈降を防止する方
法として、その溶液中に分散剤等を添加したり、溶液の
粘度を上げる方法が考えられるが、いずれも満足すべき
結果は得られなかった。そこで、本発明者らは、Ni粉の
比重に着目し、Ni粉の見かけ比重を小さくして沈降を防
ぐ方法について検討した結果、Ni粉の内部にボイドを形
成させることによって軽量化し、Ni粉を樹脂組成物含有
溶液中で均一に分散させることが可能であることを知見
した。本発明はこの知見に基づいてなされたもので、そ
の要旨は、下記のNi粉、およびのこのNi粉を用いた
溶接性の良好な複合鋼板の製造方法にある。[Means for Solving the Problems] As a method for preventing the precipitation of Ni powder in a resin composition-containing solution before being applied to the surface of a steel sheet, a dispersant or the like is added to the solution or the viscosity of the solution is increased. Methods could be considered, but none of them yielded satisfactory results. Therefore, the present inventors focused on the specific gravity of the Ni powder, as a result of examining the method of preventing the sedimentation by reducing the apparent specific gravity of the Ni powder, to reduce the weight by forming a void inside the Ni powder, Ni powder It was found that it is possible to uniformly disperse the resin in a solution containing a resin composition. The present invention has been made based on this finding, and the gist thereof is the following Ni powder and a method for manufacturing a composite steel sheet having good weldability using the Ni powder.
【００１０】 複合鋼板の樹脂層に含有させるNi粉で
あって、見かけ比重が8.25〜8.50で、かつ、粒径が20〜
100 μｍであることを特徴とする複合鋼板用Ni粉。Ni powder contained in the resin layer of the composite steel sheet, which has an apparent specific gravity of 8.25 to 8.50 and a particle size of 20 to
Ni powder for composite steel sheets, which is 100 μm.
【００１１】 ２枚の金属板の間に樹脂層を介在させ
た溶接性の良好な複合鋼板の製造方法であって、前記
に記載のNi粉を分散させた樹脂組成物含有溶液を２枚の
金属板の少なくとも一方の表面に塗布し、塗布面を内側
にしてそれらの金属板を張り合わせることを特徴とする
溶接性の良好な複合鋼板の製造方法。A method for producing a composite steel sheet having a good weldability in which a resin layer is interposed between two metal plates, wherein the solution containing a resin composition in which the Ni powder described above is dispersed is used as two metal plates. A method for producing a composite steel sheet having good weldability, characterized in that the metal sheet is applied to at least one surface of the above and the metal sheets are laminated with the application surface inside.
【００１２】前記の見掛け比重とは、Ni粉の内部に形成
させたボイドは粉末の構成要素として含まれるが、個々
の粒子の間の空間は含まれない状態で測定される比重
で、例えば、ピクノメーターにより水を用いて測定され
る。The above-mentioned apparent specific gravity is the specific gravity measured in a state where voids formed inside the Ni powder are included as constituent elements of the powder, but the spaces between the individual particles are not included. Measured with a pycnometer using water.
【００１３】[0013]
【作用】以下、本発明について詳細に説明する。The present invention will be described in detail below.
【００１４】本発明（前記の発明）のNi粉は、前記の
ように、見掛け比重が8.25〜8.50であり、かつ、粒径が
20〜100 μｍである。As described above, the Ni powder of the present invention (the above invention) has an apparent specific gravity of 8.25 to 8.50 and a particle size of
20 to 100 μm.
【００１５】Ni粉の見掛け比重の上限を8.50とするの
は、8.50を超えると、粒径が20〜100μｍの場合、鋼板
表面に塗布する前のNi粉を添加した樹脂組成物含有溶液
中でNi粉が沈降し、歩留りの低下を招くからである。一
方、見掛け比重の下限が8.25よりも小さい場合は、Ni粉
の硬度がビッカース硬度で60Hv未満となることが多く、
十分な溶接性が得られない。これは、Ni粉の硬度が低い
と、２枚の鋼板の間に樹脂層を挟んで圧着した時にNi粉
自身が変形するためNi粉が樹脂を突き破って鋼板の表面
に接触した状態とはならず、導電性を確保できないから
である。The upper limit of the apparent specific gravity of Ni powder is set to 8.50, and when it exceeds 8.50, when the particle size is 20 to 100 μm, in a solution containing a resin composition containing Ni powder before being applied to the surface of a steel sheet. This is because the Ni powder settles and the yield decreases. On the other hand, when the lower limit of the apparent specific gravity is less than 8.25, the hardness of the Ni powder is often less than 60 Hv in Vickers hardness,
Sufficient weldability cannot be obtained. This is because if the hardness of the Ni powder is low, the Ni powder itself will deform when the resin layer is sandwiched between two steel plates and crimped, so the Ni powder does not break through the resin and contact the surface of the steel plate. This is because the conductivity cannot be secured.
【００１６】Ni粉の粒径は、前記のように、一般に鋼板
の間に介在させる樹脂層の厚さと溶接性の観点から規定
される。本発明では、粒径を20〜100 μｍとするが、20
μｍ未満では通常用いられる樹脂層の厚さに比較して粒
径が小さすぎるため溶接性が良好ではなく、 100μｍを
超えると樹脂層の厚さに対して大きすぎ、十分な接着強
度が得られないからである。As described above, the grain size of the Ni powder is generally defined from the viewpoint of the thickness of the resin layer interposed between the steel sheets and the weldability. In the present invention, the particle size is 20-100 μm, but 20
If it is less than μm, the weldability is not good because the particle size is too small compared to the thickness of the resin layer that is normally used, and if it exceeds 100 μm, it is too large for the thickness of the resin layer and sufficient adhesive strength is obtained. Because there is no.
【００１７】Ni粉の見掛け比重を小さくするには、前記
のようにNi粉の内部にボイドを形成させてやればよく、
例えば、Ｃ（炭素）、Ｓ（硫黄）、Ｏ（酸素）、Ｎ（窒
素）等の不純物を含有するNi粉に非酸化性の雰囲気中で
300〜1000℃で熱処理（焼鈍処理）を施すことにより見
掛け比重を8.25〜8.50とすることができる。これは、上
記の不純物が熱処理の過程でガス化して放出され、一部
がガス体（気泡）としてNi粉の内部にトラップされるこ
とによるものと推測される。また、Ni粉の内部に Zn(亜
鉛）や Sn(錫）等が微細な粒子状で含まれる場合は、熱
処理過程でこのZnやSnの微粒子が拡散してその跡にカー
ケンダールボイドが形成されるので、やはり比重の小さ
いNi粉を得ることができる。In order to reduce the apparent specific gravity of the Ni powder, it is sufficient to form voids inside the Ni powder as described above,
For example, in a non-oxidizing atmosphere to Ni powder containing impurities such as C (carbon), S (sulfur), O (oxygen), and N (nitrogen).
The apparent specific gravity can be adjusted to 8.25 to 8.50 by performing heat treatment (annealing treatment) at 300 to 1000 ° C. It is presumed that this is because the above impurities are gasified and released during the heat treatment, and part of them are trapped inside the Ni powder as gas bodies (bubbles). Also, when Zn (Zn), Sn (Tin), etc. are contained in the Ni powder in the form of fine particles, fine particles of Zn and Sn diffuse during the heat treatment process, forming Kirkendall voids in the traces. As a result, Ni powder having a small specific gravity can be obtained.
【００１８】従って、本発明で用いる熱処理前のNi粉と
しては、Niの純度が99〜99.95 重量％程度で、Ｃ、Ｓ、
Ｏ、Ｎのような気化しやすい元素か、あるいはZnやSnの
ような拡散しやすい元素が0.05〜１重量％程度含まれて
いるものが望ましい。Therefore, as the Ni powder before heat treatment used in the present invention, the purity of Ni is about 99 to 99.95% by weight, and C, S,
It is desirable that elements such as O and N that easily vaporize or elements that easily diffuse such as Zn and Sn be contained in an amount of about 0.05 to 1% by weight.
【００１９】熱処理温度は、Ｃ、Ｓ、Ｏ、Ｎのような気
化しやすい元素の気泡の生成によりボイドを形成させる
場合は 600〜1000℃、好ましくは 700〜900 ℃とすれば
よく、カーケンダールボイドの形成による場合は 300〜
400 ℃とするのが望ましい。The heat treatment temperature may be 600 to 1000 ° C., preferably 700 to 900 ° C. in the case of forming voids by forming bubbles of elements such as C, S, O and N, which are easily vaporized. 300 to when the formation of Darvoid
400 ° C is desirable.
【００２０】なお、熱処理時間は特に限定されることな
く、Ni粉の粒度等によって異なるが、通常、30〜120 分
の範囲で適宜調整すればよい。また、この熱処理は非酸
化性雰囲気中で行うことが望ましい。The heat treatment time is not particularly limited and may be appropriately adjusted within a range of 30 to 120 minutes, although it varies depending on the particle size of the Ni powder and the like. Further, it is desirable that this heat treatment is performed in a non-oxidizing atmosphere.
【００２１】上記のNi粉を用いて本発明（の発明）の
溶接性の良好な複合鋼板を製造するには、まず、樹脂組
成物含有溶液中に前記の見掛け比重ならびに粒径を有す
るNi粉を添加し、攪拌して分散させる。In order to manufacture the composite steel sheet of the present invention (invention) having good weldability using the above Ni powder, first, the Ni powder having the above-mentioned apparent specific gravity and particle size in the resin composition-containing solution is prepared. Add and stir to disperse.
【００２２】樹脂としては、ポリオレフィン系樹脂、エ
ポキシ系樹脂、ポリエステル系樹脂、ポリウレタン系樹
脂、アクリル系樹脂等、従来、複合鋼板に用いられてい
る樹脂はいずれも使用することができる。As the resin, any of the resins conventionally used for composite steel sheets, such as polyolefin resin, epoxy resin, polyester resin, polyurethane resin and acrylic resin, can be used.
【００２３】樹脂を溶解する溶媒も特に限定されること
なく、一般に使用されるシクロヘキサノン、キシレン、
トルエン、メチルエチルケトン等の中から使用する樹脂
に合わせ適宜選択して用いればよい。The solvent for dissolving the resin is also not particularly limited, and cyclohexanone, xylene, which are generally used,
It may be appropriately selected from toluene, methyl ethyl ketone, etc. depending on the resin used.
【００２４】Ni粉は、圧着後の樹脂層の重量に対し３〜
30重量％となるように樹脂組成物含有溶液中に添加する
のが好ましい。３重量％未満では複合鋼板とした場合の
溶接性が十分ではなく、30重量％を超えると制振性なら
びに樹脂と鋼板との接着性に悪影響が認められる。The amount of Ni powder is 3 to 3 with respect to the weight of the resin layer after pressure bonding.
It is preferably added to the resin composition-containing solution so as to be 30% by weight. If it is less than 3% by weight, the weldability in the case of a composite steel sheet is not sufficient, and if it exceeds 30% by weight, the vibration damping property and the adhesiveness between the resin and the steel plate are adversely affected.
【００２５】このNi粉を含有させた樹脂組成物含有溶液
をロールコーター等により２枚の鋼板の少なくとも一方
の表面に塗布し、塗布面を内側にして重ね合わせ、圧着
する。The resin composition-containing solution containing the Ni powder is applied on at least one surface of two steel plates by a roll coater or the like, and the applied surfaces are overlapped with each other inside and pressure-bonded.
【００２６】圧着はヒートロールによる熱圧着方式によ
り行う。ヒートロールの温度は50〜250 ℃、加圧力は線
圧で10〜200kgf/cm とするのが好ましい。The pressure bonding is performed by a heat pressure bonding method using a heat roll. It is preferable that the temperature of the heat roll is 50 to 250 ° C. and the pressure is 10 to 200 kgf / cm in linear pressure.
【００２７】[0027]
【実施例】厚さ 0.4mmの２枚の冷延鋼板のそれぞれ片面
にNi粉を添加したポリエステル−メラミン系樹脂組成物
含有溶液をロールコーターにより塗布し、塗布面を張り
合わせて複合鋼板とした。Example A solution containing a polyester-melamine-based resin composition containing Ni powder added to one surface of each of two 0.4 mm-thick cold-rolled steel sheets was coated with a roll coater, and the coated surfaces were laminated to form a composite steel sheet.
【００２８】樹脂組成物の溶媒としては、シクロヘキサ
ノン／キシレン＝２／１の混合溶媒を使用した。用いた
Ni粉の粒径は60〜70μｍで、窒素雰囲気中で表１に示す
焼鈍温度で１時間熱処理（焼鈍処理）を行い、圧着後の
樹脂層の重量に対して同じく表１に示す添加量になるよ
うに樹脂組成物に配合した。樹脂組成物の塗布後の厚み
は圧着後の樹脂層の厚みが40μｍとなるように、上下鋼
板共に20μｍとした。As the solvent for the resin composition, a mixed solvent of cyclohexanone / xylene = 2/1 was used. Using
The particle size of the Ni powder is 60 to 70 μm, and heat treatment (annealing treatment) is performed for 1 hour at the annealing temperature shown in Table 1 in a nitrogen atmosphere, and the addition amount shown in Table 1 is also added to the weight of the resin layer after pressure bonding. To the resin composition. The thickness of the resin composition after coating was 20 μm for both the upper and lower steel plates so that the thickness of the resin layer after pressure bonding was 40 μm.
【００２９】なお、圧着は、塗布面を 200℃に加熱して
線圧150kgf/cm の加圧力で行った。The pressure was applied by heating the coated surface to 200 ° C. and applying a linear pressure of 150 kgf / cm 2.
【００３０】上記の複合鋼板について溶接性を評価する
とともに、複合鋼板の製作途中における樹脂組成物含有
溶液中でのNi粉の沈降状況について調査した。The weldability of the above-mentioned composite steel sheet was evaluated, and the sedimentation state of Ni powder in the resin composition-containing solution during the production of the composite steel sheet was investigated.
【００３１】Ni粉の沈降状況の評価は目視観察により行
った。また、溶接性については、複合鋼板を30mm×30mm
の寸法で切り出して試験片とし、この試験片 200枚に対
してスポット溶接試験を行ってそのとき発生する溶接欠
陥数により評価した。溶接条件は、電極としてダブルＲ
ドーム型のもの (材質：１％Cr−Cu) を用い、電流：85
00Ａ、加圧力：200kgf、通電時間：12サイクルとした。The sedimentation of the Ni powder was evaluated by visual observation. Regarding weldability, the composite steel plate is 30 mm x 30 mm
The test pieces were cut out with the dimensions of, and a spot welding test was conducted on 200 of these test pieces, and the number of welding defects generated at that time was evaluated. Welding condition is double R as electrode
Dome type (material: 1% Cr-Cu), current: 85
00A, applied pressure: 200 kgf, energization time: 12 cycles.
【００３２】調査結果を表１に示す。この表のNi粉の沈
降状況の欄において、○印はNi粉の沈降が少なく良好で
あることを、△印は沈降がやや多いことを、また、×印
は沈降が激しく、Ni粉の歩留りが低いためコスト高にな
ることを表す。また、溶接性の欄の数字は、試験に供し
た 200枚の試験片に対する溶接欠陥が生じた試験片の数
を表す。The survey results are shown in Table 1. In the column of sedimentation status of Ni powder in this table, ○ indicates that the Ni powder has little sedimentation and is good, Δ indicates that the sedimentation is slightly large, and × indicates that the sedimentation is severe and the Ni powder yield is high. It means that the cost is high because of low. The number in the weldability column indicates the number of test pieces with welding defects for the 200 test pieces used in the test.
【００３３】表１の結果から明らかなように、Ni粉の焼
鈍温度が好ましい温度範囲内であれば見掛け比重が本発
明で定める範囲内にあり、樹脂組成物含有溶液中でのNi
粉の沈降を防止することができ、また、溶接性も良好で
あった。しかし、焼鈍しないNi粉あるいは焼鈍温度が 5
00℃のNi粉を用いた場合（比較例１および２）は、Ni粉
の見掛け比重が本発明で定める範囲より大きく、溶接性
は良好であったが、Ni粉の沈降が激しかった。As is clear from the results of Table 1, if the annealing temperature of the Ni powder is within the preferable temperature range, the apparent specific gravity is within the range defined by the present invention, and the Ni content in the resin composition-containing solution is large.
The powder could be prevented from settling, and the weldability was good. However, the Ni powder not annealed or the annealing temperature is 5
When the Ni powder of 00 ° C. was used (Comparative Examples 1 and 2), the apparent specific gravity of the Ni powder was larger than the range defined in the present invention, and the weldability was good, but the precipitation of the Ni powder was severe.
【００３４】Ni粉の焼鈍を1100℃で行った比較例３で
は、見掛け比重が本発明で定める範囲より小さく、Ni粉
の沈降は認められなかったが、溶接性が十分ではなかっ
た。In Comparative Example 3 in which the Ni powder was annealed at 1100 ° C., the apparent specific gravity was smaller than the range specified in the present invention, and the Ni powder was not settled, but the weldability was not sufficient.
【００３５】[0035]
【表１】 [Table 1]
【００３６】[0036]
【発明の効果】２枚の鋼板の間に樹脂層を挟んだ複合鋼
板を製造するに際し、樹脂層に添加するNi粉として本発
明のNi粉を用いれば、鋼板に塗布する樹脂組成物含有溶
液中でのNi粉の沈降が生じず均一に分散するので、Ni粉
の歩留りが向上し、製造コストを低減することができ
る。このNi粉を用い、本発明方法により製造した複合鋼
板は溶接性も良好である。EFFECT OF THE INVENTION When a composite steel sheet having a resin layer sandwiched between two steel sheets is used, if the Ni powder of the present invention is used as the Ni powder added to the resin layer, a resin composition-containing solution applied to the steel sheet. Since the Ni powder inside does not settle and is uniformly dispersed, the yield of the Ni powder is improved and the manufacturing cost can be reduced. The composite steel sheet produced by the method of the present invention using this Ni powder has good weldability.
【００３７】[0037]
Claims (2)
であって、見かけ比重が8.25〜8.50で、かつ、粒径が20
〜100 μｍであることを特徴とする複合鋼板用ニッケル
粉。1. A nickel powder contained in a resin layer of a composite steel sheet, which has an apparent specific gravity of 8.25 to 8.50 and a particle size of 20.
Nickel powder for composite steel sheet, characterized by being ~ 100 μm.
接性の良好な複合鋼板の製造方法であって、請求項１に
記載のニッケル粉を分散させた樹脂組成物含有溶液を２
枚の金属板の少なくとも一方の表面に塗布し、塗布面を
内側にしてそれらの金属板を張り合わせることを特徴と
する溶接性の良好な複合鋼板の製造方法。2. A method for producing a composite steel sheet having good weldability, comprising a resin layer interposed between two metal plates, wherein the solution containing a resin composition containing nickel powder according to claim 1
A method for producing a composite steel sheet having good weldability, which comprises coating at least one surface of a sheet of metal plate and laminating the metal plate with the coated surface facing inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10647993A JPH06316027A (en) | 1993-05-07 | 1993-05-07 | Nickel powder for composite steel sheet and production of composite steel sheet excellent in weldability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10647993A JPH06316027A (en) | 1993-05-07 | 1993-05-07 | Nickel powder for composite steel sheet and production of composite steel sheet excellent in weldability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06316027A true JPH06316027A (en) | 1994-11-15 |
Family
ID=14434633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10647993A Pending JPH06316027A (en) | 1993-05-07 | 1993-05-07 | Nickel powder for composite steel sheet and production of composite steel sheet excellent in weldability |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06316027A (en) |
-
1993
- 1993-05-07 JP JP10647993A patent/JPH06316027A/en active Pending
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