JP2005336556A - Ordinary temperature arc type metal spraying method using tin as thermal spraying material - Google Patents
Ordinary temperature arc type metal spraying method using tin as thermal spraying material Download PDFInfo
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この発明は、防食皮膜を形成する工程や電磁シールド皮膜を形成する工程において、耐久性、作業性、環境性に優れる防食、電磁シールド処理を短時間、低コスト、高コストパフォーマンスでの実現を可能とした金属溶射法に関する。 This invention can realize corrosion prevention and electromagnetic shielding treatment with excellent durability, workability, and environmental performance in a short time, at low cost and high cost performance in the process of forming an anticorrosion film and the process of forming an electromagnetic shield film. It relates to the metal spraying method.
従来の金属溶射法では、主に金属の下地面の防食性及び電磁シールド性を向上するために、亜鉛、アルミニウム、亜鉛−アルミニウム擬似合金、亜鉛−アルミニウム合金の少なくとも一種を材料として使用されたものが一般的であり、普及している。 The conventional metal spraying method uses at least one of zinc, aluminum, a zinc-aluminum pseudo-alloy, and a zinc-aluminum alloy as a material mainly to improve the anticorrosion and electromagnetic shielding properties of the metal ground. Is common and popular.
金属溶射工程の前処理として、ブラスト材を下地面に投射するとともに投射したブラスト材と粉塵を回収する方法で粗面化下地を形成する必要がある。また、ブラスト材が使用できずに粗面形成剤を塗布することによって、粗面を形成する前処理も近年増えている。 As a pretreatment for the metal spraying process, it is necessary to form a roughened base by projecting the blast material onto the base surface and collecting the projected blast material and dust. Also, in recent years, pretreatment for forming a rough surface by applying a rough surface forming agent without using a blast material has been increasing.
金属皮膜を形成する金属溶射法としては、アーク式溶射法、ガス溶線式溶射法、ガス溶粉式溶射法、プラズマ式溶射法によるものが知られている。 Known metal spraying methods for forming a metal film include arc spraying, gas spraying, gas spraying, and plasma spraying.
アーク式溶射法は、電気アークにより溶射材料を溶融し、後方から空気を放出して、加速した溶融粒子を基材に衝突させ、皮膜を形成する。 In the arc-type thermal spraying method, a thermal spray material is melted by an electric arc, air is released from behind, and accelerated molten particles collide with a substrate to form a coating.
ガス溶線式溶射法は、アセチレンガス及び酸素を燃焼させて、溶射材料を溶融し、その炎の勢いと周辺から放出する圧縮空気によって、溶融粒子を加速し、基材に衝突させ皮膜を形成する。 In the gas spraying method, acetylene gas and oxygen are burned to melt the sprayed material, and the molten particles are accelerated by the force of the flame and compressed air released from the surroundings to collide with the substrate to form a coating. .
プラズマ式溶射法は、溶射ガン内で生じる直流プラズマジェットを用いて溶射材料を加熱・加速し、溶融又はそれに近い状態にして素地に吹き付けて皮膜を形成する。 In the plasma spraying method, a sprayed material is heated and accelerated by using a direct current plasma jet generated in a spray gun, and a coating is formed by being melted or sprayed on a base material.
また、熱膨張率に差のある基材と溶射材料を使用する場合には、これを緩和して密着強度を高めるためにMo、Ni-Al、Ni-Cr系合金等をつなぎの役目を果たすボンディング材として、使用する必要がある。 Also, when using a base material and thermal spray material that have a different coefficient of thermal expansion, it plays the role of linking Mo, Ni-Al, Ni-Cr alloys, etc. to relax this and increase the adhesion strength It must be used as a bonding material.
さて、近年身の回りには、無線電波や高圧送電線から出る電磁界など、ＯＡ機器に影響を及ぼす電磁波が発生している。オフィスなどでは、無線ＬＡＮへ移行により、外部へ情報が漏洩したり、携帯電話や外部からの電波の影響で、ネットワーク障害が発生している。 医療施設においては、特に電磁波の影響を受けて、誤動作を起こす恐れがある医療機器が数多くある。 In recent years, electromagnetic waves that affect OA equipment such as radio waves and electromagnetic fields emitted from high-voltage power transmission lines have been generated around us. In offices or the like, information is leaked to the outside due to a shift to a wireless LAN, or a network failure occurs due to the influence of a mobile phone or an external radio wave. In medical facilities, there are many medical devices that may cause malfunction, particularly under the influence of electromagnetic waves.
このようなことから、近年ビル等の建築物に対する電磁シールドの必要性が、重要視されている。現在では、天井、壁、床のシールド材料として、銅、アルミニウム、炭素鋼、ステンレス鋼等の金属板、もしくは電磁シールド効果のある金属を網状に配置した繊維、ニッケルや銅を混入した塗料を用いている。 For these reasons, the necessity of electromagnetic shielding for buildings such as buildings has been emphasized in recent years. Currently, copper, aluminum, carbon steel, stainless steel, or other metal plates, or fibers that have an electromagnetic shielding effect arranged in a net, or paint mixed with nickel or copper is used as a shielding material for ceilings, walls, and floors. ing.
また、鉄筋コンクリートにおいて、コンクリート中の塩化物イオンが一定量以上になる場合や、コンクリートが空気中の二酸化炭素と反応してｐＨが低下すると、不動態皮膜が破壊され鋼材は腐食する。これらに対する電気防食法として、チタン線材をアーク溶射機を用いてコンクリート表面に溶射する。電源装置のプラス側に白金チタン線を、マイナス
側に鉄筋をつなぎ、両者間に防食電流を発生させ、鉄筋を防食する方法がある。
しかしながら、従来の金属溶射法によれば、金属溶射の限られた条件においてしか、安定した密着強度を確保することができず、金属皮膜の密着性が極端に低下し、皮膜が剥離しやすくなり好ましくない。 However, according to the conventional metal spraying method, stable adhesion strength can be ensured only under limited conditions of metal spraying, the adhesion of the metal film is extremely lowered, and the film is easily peeled off. It is not preferable.
特に、アルミニウム溶射皮膜は溶射直後に皮膜が収縮する性質があるため、前処理が適当でない場合には溶射皮膜と素地との接触面においてせん断力が発生し、溶射皮膜が素地から遊離したり、端部においてはく離するようになる。 In particular, aluminum sprayed coating has the property that the coating shrinks immediately after spraying, so if pretreatment is not appropriate, shearing force is generated at the contact surface between the sprayed coating and the substrate, and the sprayed coating is released from the substrate, It peels off at the end.
基材が金属でない場合に、金属を溶射材料として使用するのは、通常溶射時に高温になり、基材に悪影響を与える。付着率も融点の低い亜鉛合金などは、２０％程度が気化し、拡散飛行することにより５０％前後に低下する。また、溶射の温度を下げると溶射の粒子の大きさがばらつき、密着強度が弱まるなどの影響が出る場合が多い。 When a base material is not a metal, using a metal as a thermal spray material usually becomes a high temperature during thermal spraying, which adversely affects the base material. About 20% of a zinc alloy having a low melting point, which has a low melting point, is vaporized and decreases to about 50% by diffusion flight. Further, when the spraying temperature is lowered, the size of the sprayed particles varies and the adhesion strength is often reduced.
また、前処理に粗面形成剤を用いて粗面化処理を行った場合には、粗面形成剤の接着剤が溶出し、粗面形成剤が剥離してしまうため高温溶射が困難である。 In addition, when the roughening treatment is performed using the rough surface forming agent for the pretreatment, the adhesive of the rough surface forming agent is eluted and the rough surface forming agent is peeled off, so that high temperature spraying is difficult. .
そこで、この発明は、防食皮膜や電磁シールド皮膜を形成する金属溶射法において、基材として種々の材料が選択でき、溶射金属の密着強度を高めた方法で高性能を提供することを課題とする。 Accordingly, an object of the present invention is to provide high performance by a method in which various materials can be selected as a base material in a metal spraying method for forming an anticorrosion coating or an electromagnetic shielding coating, and the adhesion strength of the sprayed metal is increased. .
さらに、従来の建築構造物に電磁シールドを施す処理は、アルミニウムや銅の板材を壁全体に貼るために、高重量でとても高価である。アルミニウムや銅の板材同士の継ぎ目があると、そのシールド効果は、継ぎ目が長いと劣化量は大きくなるので、これを埋める必要がある。 Furthermore, the process of applying electromagnetic shielding to a conventional building structure is heavy and very expensive because an aluminum or copper plate is applied to the entire wall. If there is a seam between aluminum and copper plate materials, the shielding effect will be increased if the seam is long.
そこで、この発明は、錫を溶射材料に用いた常温アーク式金属溶射法で、建築構造物に電磁シールド処理を簡便、軽重量、安価そして環境対策も同時に実現できる方法を提供することを課題とする。 Therefore, the present invention has an object to provide a method that can achieve simple, light weight, low cost, and environmental measures at the same time for electromagnetic shielding treatment on a building structure by a room temperature arc type metal spraying method using tin as a thermal spray material. To do.
また、建築構造物に対する電気防食法のチタン溶射方式は、コンクリート表面にチタンの溶射を行うが、表面の粗面化処理が難しく、非常に溶射皮膜の付着率が低い。粗面形成剤を塗布した場合でも、チタンの溶射は高温での溶射になるため、粗面形成剤が剥離しやすくなり、効果的ではない。 Moreover, although the titanium spraying method of the anticorrosion method with respect to a building structure sprays titanium on the concrete surface, the surface roughening process is difficult and the adhesion rate of a sprayed coating is very low. Even when a rough surface forming agent is applied, since the thermal spraying of titanium is performed at a high temperature, the rough surface forming agent is easily peeled off, which is not effective.
そこで、この発明は、電気防食法のチタン溶射方式において、鋼材内臓のコンクリートと溶射されたチタンの密着強度を高めた方法で高性能を提供することを課題とする。 In view of this, an object of the present invention is to provide high performance by a method in which the adhesion strength between the concrete contained in the steel material and the sprayed titanium is increased in the titanium spraying method of the anticorrosion method.
以上の課題を解決するために、請求項１の発明は、基材に粗面化下地を形成する工程が
簡便なボンディングの材料として、錫を溶射材料に用いた常温アーク式金属溶射法である。
In order to solve the above problems, the invention of claim 1 is a room temperature arc type metal spraying method using tin as a thermal spray material as a bonding material in which the process of forming the roughened base on the substrate is simple. .
常温アーク式溶射機を用いて、アーク部に直接圧縮空気を当てず、負圧の空気で引くことによって、空気圧を高め、形状、大きさが均一で複雑な突起を有する錫の微細粒子を得る。低温の噴射空気によって、加速し基材に衝突した低融点、軟金属の錫溶融微細粒子は、効果的に冷却し、粗面化度の小さい面の隅々にまで入り込み、結合力を保つ。この結合の様子を図１に示す。 Using a normal temperature arc type thermal spraying machine, do not apply compressed air directly to the arc part, but draw it with negative pressure air to increase the air pressure and obtain fine tin particles with uniform shapes and sizes and complex protrusions . The low-melting-point, soft-metal, tin-melted fine particles that have accelerated and collided with the base material by the low-temperature jet air cool effectively and enter every corner of the surface with a small degree of roughening to maintain the bonding force. The state of this coupling is shown in FIG.
溶射された錫皮膜の表面は、適度な粗さを持つので、上層に他の溶射材料で溶射を行い、皮膜を積層する。特に、粗面形成剤の塗布の代わりに用いると、高い融点を持つ金属の積層溶射も可能であり、有効である。 Since the surface of the sprayed tin coating has an appropriate roughness, the upper layer is sprayed with another spraying material, and the coating is laminated. In particular, when it is used instead of the application of the rough surface forming agent, it is possible and effective to laminate and spray a metal having a high melting point.
請求項２の発明は、基材として種々の材料が使用できることを特徴とする錫を溶射材料
に用いた常温アーク式金属溶射法である。
The invention of claim 2 is a room temperature arc type metal spraying method using tin as a thermal spray material, characterized in that various materials can be used as a base material.
錫を溶射材料に用いた常温アーク式金属溶射法は、溶射温度が低い（６０℃〜７０℃）ため、基材の酸化が少なく、剥離しにくい。また、溶射材料の錫と基材との温度差も小さいので熱膨張率による剥離も少ない。以上の理由から、紙、木材、石膏等種々の材料を基材として、溶射を可能にしている。 The room temperature arc type metal spraying method using tin as a thermal spray material has a low thermal spraying temperature (60 ° C. to 70 ° C.), so that the base material is less oxidized and hardly peeled off. In addition, since the temperature difference between the thermal spray material tin and the substrate is small, there is little peeling due to the coefficient of thermal expansion. For the above reasons, thermal spraying is possible using various materials such as paper, wood and gypsum as a base material.
請求項３の発明は、建築構造物等に、電磁シールド皮膜の形成を可能としたことを特徴とする錫を溶射材料に用いた常温アーク式金属溶射法である。 The invention of claim 3 is a room temperature arc type metal spraying method using tin as a thermal spray material, characterized in that an electromagnetic shielding film can be formed on a building structure or the like.
低融点、軟金属の特徴を持った錫を溶射材料に用いた常温アーク式金属溶射法は、請求項２で示したように、紙、木材、石膏等の建築資材への溶射を可能にしたものである。また、常温アーク式金属溶射機は、軽量かつ小型であるために、移動が簡便で、建築現場においての作業を可能にしている。複雑な形状の部屋に対しても溶射は、金属板を貼るよりも作業は簡単であり、当然継ぎ目も発生させることはない。 The room-temperature arc-type metal spraying method using tin, which has the characteristics of a low melting point and soft metal, as the thermal spraying material enables thermal spraying to construction materials such as paper, wood and plaster as shown in claim 2 Is. Moreover, since the room temperature arc type metal spraying machine is lightweight and small, it is easy to move and enables work on a construction site. Thermal spraying is simpler than applying a metal plate to a room with a complicated shape, and naturally no seam is generated.
錫のシールド効果については、ＳＢＣパネル（２００ｍｍ×２００ｍｍ×４ｍｍ）に錫を、常温アーク式金属溶射法によって、５０μｍの厚みで溶射した結果を図２に示す。１００ＭＨｚから１０００ＭＨｚにおいて、６０ｄＢ程度電磁波を減衰させることができることがわかる。また、比導電率が０．１５、比透磁率が１．０であることからも、周波数の高いところでの電磁波シールド効果を期待できることがわかる。 As for the shielding effect of tin, FIG. 2 shows the result of spraying tin on an SBC panel (200 mm × 200 mm × 4 mm) to a thickness of 50 μm by a room temperature arc type metal spraying method. It can be seen that electromagnetic waves can be attenuated by about 60 dB from 100 MHz to 1000 MHz. Moreover, it can be seen that the electromagnetic wave shielding effect at a high frequency can be expected from the specific conductivity of 0.15 and the relative permeability of 1.0.
より高いシールド効果を必要とする場合には、請求項１で示したように、錫溶射をボンディング材として、電磁波環境に応じたシールド効果の高い金属の溶射皮膜を積層する。 When a higher shielding effect is required, a metal sprayed coating having a high shielding effect corresponding to the electromagnetic wave environment is laminated using tin spraying as a bonding material as described in claim 1.
また、錫は環境に対しても安全な物質として認められているので、建築材料として安心して使用できる。 In addition, tin is recognized as a safe material for the environment, so it can be used safely as a building material.
請求項４の発明は、鋼材を内蔵したコンクリートを基材として、溶射皮膜を高い付着率で形成することができ、チタンを上層に溶射することによって、外部電源装置から電流を流すと電気防食効果を得ることを特徴とする錫を溶射材料に用いた常温アーク式金属溶射法である。 The invention according to claim 4 is capable of forming a sprayed coating with a high adhesion rate using a concrete containing steel as a base material, and applying an electric current from an external power supply device by spraying titanium onto the upper layer, thereby providing an anticorrosive effect. This is a room-temperature arc type metal spraying method using tin as a spraying material.
低融点、軟金属の特徴を持った錫を溶射材料に用いた常温アーク式金属溶射法は、請求項２で示したように、粗面化処理を行うことが難しい紙、木材、石膏等の建築資材への溶射を可能にしたものであるので、コンクリートに対しても高い付着率が得られる。コン
クリート表面をサンドブラストによって下地処理をしておくと、より付着率は高められる。
The room temperature arc type metal spraying method using tin with low melting point and soft metal characteristics as the spraying material, as shown in claim 2, can be applied to paper, wood, plaster, etc., which are difficult to roughen. Since it enables thermal spraying to building materials, a high adhesion rate to concrete can be obtained. If the concrete surface is ground-treated by sandblasting, the adhesion rate can be further increased.
また、溶射された錫皮膜の表面は、適度な粗さを持つので、上層にチタン線材の溶射を行い、皮膜を積層する。特に、粗面形成剤の塗布の代わりに、錫をボンディング材として常温アーク溶射を行うと、高い融点を持つチタンの積層溶射も可能であり、有効である。
これで、基本的な電気防食機能を得ることができる。
Further, since the surface of the sprayed tin film has an appropriate roughness, the upper layer is sprayed with a titanium wire and the film is laminated. In particular, when room temperature arc spraying is performed using tin as a bonding material instead of applying the rough surface forming agent, it is possible to perform the multilayer spraying of titanium having a high melting point, which is effective.
Thus, a basic cathodic protection function can be obtained.
請求項１の発明の錫をボンディング材料に用いた常温アーク式金属溶射法によれば、溶射温度が低い（６０℃〜７０℃）ため、基材の酸化が少なく、溶射で加熱・加速された微細粒子の錫が素地表面の凹凸に数多くかみ合うことにより、高い密着強度が得られ剥離しにくい。 According to the room temperature arc type metal spraying method using the tin of the invention of claim 1 as a bonding material, since the spraying temperature is low (60 ° C. to 70 ° C.), the base material is less oxidized and heated and accelerated by spraying. A large amount of fine-grained tin meshes with the irregularities on the substrate surface, so that high adhesion strength is obtained and peeling is difficult.
さらに、溶射材料の錫（ボンディング材）と基材との温度差も小さいので熱膨張率による剥離も少ない。溶射された錫皮膜の表面は、適度な粗さを持つので、基材と使用目的に応じた上層の溶射皮膜を、高い密着強度で結びつけることができ、長い期間に渡って上層の溶射皮膜の効能を持続することができるので、メンテナンス頻度、費用の軽減を実現することができる。 Further, since the temperature difference between the thermal spray material tin (bonding material) and the substrate is small, there is little peeling due to the coefficient of thermal expansion. Since the surface of the sprayed tin coating has an appropriate roughness, it is possible to tie the base and the upper thermal spray coating according to the purpose of use with high adhesion strength, and the upper thermal spray coating over a long period of time. Since the efficacy can be sustained, maintenance frequency and cost can be reduced.
また、ボンディング材に使用する錫は、上層の溶射材料として、あらゆる金属を選択することができるため、常に目的に対して、最適の材料を溶射できる。 Moreover, since the tin used for the bonding material can select any metal as the thermal spray material for the upper layer, it is possible to always spray the optimum material for the purpose.
請求項２の発明の基材として種々の材料が使用できることを特徴とする錫を溶射材料に用いた常温アーク式金属溶射法によれば、溶射材料の付着率を高めることができ、少ない材料ですむため、低コストが得られる。また、密着強度も高くメンテナンス頻度を下げることができる。 According to the room temperature arc type metal spraying method using tin as a thermal spraying material, which can use various materials as the base material of the invention of claim 2, the adhesion rate of the thermal spraying material can be increased, and there are few materials Therefore, low cost can be obtained. Also, the adhesion strength is high and the maintenance frequency can be lowered.
請求項３の発明の建築構造物等に、電磁シールド皮膜の形成を可能としたことを特徴とする錫を溶射材料に用いた常温アーク式金属溶射法によれば、建物の形状に関わることなく容易に作業ができ、シールド効果の劣化に多大な影響を及ぼすスリットも皆無にできる。
また、現場の電磁波環境を測定し、シールド皮膜を厚くすることや減衰させるべき周波数に応じた金属シールド材料を重ねて溶射することにより、一層のシールド効果を得ることも可能である。
According to the room temperature arc type metal spraying method using tin as a thermal spray material, which is capable of forming an electromagnetic shielding film on the building structure of the invention of claim 3, without being concerned with the shape of the building It is easy to work and there can be no slits that greatly affect the shielding effect.
It is also possible to obtain a further shielding effect by measuring the electromagnetic wave environment in the field and increasing the thickness of the shield film or by spraying a metal shield material corresponding to the frequency to be attenuated.
請求項４の発明の鋼材を内蔵したコンクリートを基材として、溶射皮膜を高い付着率で形成することができ、チタンを上層に溶射することによって、外部電源装置から電流を流すと電気防食効果を得ることを特徴とする錫を溶射材料に用いた常温アーク式金属溶射法によれば、電気防食工法のチタン溶射方式において、陽極に使用するチタン溶射皮膜形成を非常に高い付着率で行なえるので低コストを実現できる。また、粗面形成剤を使用した場合には、粗面形成剤と一緒に剥離しやすいが、この発明によると非常に密着強度が高く、メンテナンスの頻度が減る。 With the concrete containing the steel material of the invention of claim 4 as a base material, a sprayed coating can be formed with a high adhesion rate, and by applying a current from an external power supply device by spraying titanium on the upper layer, an anticorrosion effect can be obtained. According to the room temperature arc type metal spraying method using tin as the thermal spraying material, which is characterized in that the titanium spray coating used for the anode can be formed with a very high adhesion rate in the titanium spraying method of the cathodic protection method. Low cost can be realized. In addition, when a rough surface forming agent is used, it is easy to peel together with the rough surface forming agent, but according to the present invention, the adhesion strength is very high and the frequency of maintenance is reduced.
この発明の一実施形態を、以下に示す。
まず、金属溶射工程の前処理として、ブラスト材を基材面に投射するとともに投射したブラスト材と粉塵を回収する方法で粗面化下地を形成する工程は、溶射金属の密着強度を左右する重要な工程であり、錆、劣化皮膜、オイルや塩分等を完全に除去し基材からの錆要因をなくし、基材鋼板の表面粗さをＩＳＯに規定された除せい度（Ｓａ）が２．０以上、ＪＩＳ Ｂ０６０１に規定された表面粗さ（十点平均粗さＲｚ）が４０μｍ以上に処理するのが望ましい。しかし、本発明では、基材として種々の材料を選択するため、各々の基材に対して可能な程度の粗面化処理でよい。溶射材料として、錫を使用しているので基本的に粗面化処理を施さなくても、十分な密着強度は得られる。
One embodiment of the present invention is shown below.
First, as a pretreatment of the metal spraying process, the process of forming the roughened substrate by projecting the blasting material onto the substrate surface and collecting the projected blasting material and dust is important because it affects the adhesion strength of the sprayed metal Rust, deteriorated film, oil, salt and the like are completely removed to eliminate the rusting factor from the base material, and the surface roughness of the base steel sheet is 2 (sa) specified by ISO. It is desirable that the surface roughness (10-point average roughness Rz) specified in JIS B0601 is 0 or more and 40 μm or more. However, since various materials are selected as the base material in the present invention, the roughening treatment to the extent possible for each base material is sufficient. Since tin is used as the thermal spraying material, sufficient adhesion strength can be obtained without performing roughening treatment.
次に、本発明者考案の常温アーク式溶射機（例えば、特許第２７９９７１８号明細書、特許第２７４２５３６号明細書、特開平０４−０２７４６１号公報に記載の各装置）を用い、溶射を行う。これらの溶射機は、低温の空気または不活性気体を高速に噴射し、その気流により発生する減圧部において２本の錫ワイヤをアークにより同時に溶融し、高速の気流に引っ張り込み載せる。急激に過冷却されて微粒化しつつ下地粗面に食い込み、低温で強固に皮膜を生成する。 Next, thermal spraying is performed using a room temperature arc type thermal sprayer devised by the present inventor (for example, each device described in Japanese Patent No. 2799718, Japanese Patent No. 2742536, and Japanese Patent Laid-Open No. 04-027461). These thermal sprayers inject low-temperature air or inert gas at a high speed, simultaneously melt two tin wires by an arc in a decompression section generated by the air flow, and pull them on the high-speed air flow. While being supercooled rapidly and atomized, it bites into the rough surface of the substrate and produces a strong film at low temperatures.
この錫皮膜の表面は適度な粗面になっているので、これをボンディング材として上層に目的とする防錆や防食の効果を持った材料を溶射する。他の方式の溶射機を用いてセラミック等を溶射することも可能である。 Since the surface of the tin film is an appropriate rough surface, a material having a desired antirust and anticorrosive effect is sprayed on the upper layer using this as a bonding material. It is also possible to thermally spray ceramic or the like using another type of thermal spraying machine.
基材が金属以外で、溶射しようとしている材料を直接溶射できない場合に、常温アーク式溶射で錫を第１層として溶射しておくとよい。 When the base material is not metal and the material to be sprayed cannot be directly sprayed, it is preferable to spray tin as the first layer by room temperature arc spraying.
また、建築物に電磁シールド皮膜を施工する場合に、基材として種々の材料が使用できる錫を溶射材料に用いた常温アーク式金属溶射法は、天井、壁、床に対して、材料、凹凸などの施工条件に制限を受けることなく、スプレー塗装を行なうような感覚で、容易に均一な厚みで任意の厚さの皮膜を形成する。乾燥時間を必要としないので、直ちにシールド性能評価を行い、性能を満たしていない場合は、さらに厚さを増す、もしくは減衰させたい周波数の電磁波に適合した材料を上層に溶射する。シールド性能を満たせば、溶射を施した天井、壁、床等に表面処理を行なう。 In addition, when applying electromagnetic shielding coatings to buildings, room temperature arc metal spraying using tin as the thermal spray material, which can use various materials as the base material, is applied to the ceiling, walls, and floor. Without being restricted by the construction conditions such as, a film having an arbitrary thickness is easily formed with a uniform thickness as if it were spray coating. Since the drying time is not required, the shielding performance is evaluated immediately. If the performance is not satisfied, a material suitable for an electromagnetic wave having a frequency to be increased in thickness or attenuated is sprayed on the upper layer. If the shielding performance is satisfied, surface treatment is performed on the sprayed ceiling, wall, floor, etc.
「実施形態の効果」
この実施形態によれば、溶射材料として錫を使用するため、基材を選ぶことなく７０％程度の付着率が安定的に得られる。
"Effect of the embodiment"
According to this embodiment, since tin is used as the thermal spray material, an adhesion rate of about 70% can be stably obtained without selecting a base material.
常温アーク式溶射機は、小型、軽量で操作が簡単なおかつ作業性に優れ、電気を用いるためランニングコストも安い。 The room temperature arc type thermal sprayer is small, lightweight, easy to operate, excellent in workability, and low in running cost because it uses electricity.
建築構造物に電磁波シールド処理を行なうとき、シールド効果に大きな影響を与える皮膜の厚さのコントロールが簡単に行なえ、継ぎ目もなくすことが容易である。 When an electromagnetic wave shielding treatment is performed on a building structure, it is easy to control the thickness of the film that greatly affects the shielding effect, and it is easy to eliminate the seam.
１ 粗面化処理した基材
２ 錫溶融微細粒子
DESCRIPTION OF SYMBOLS 1 Substrate roughened 2 Tin melt fine particles
Claims (4)
A concrete in which a reinforcing bar is incorporated as a base material, a sprayed coating can be formed, and by applying a current from an external power supply device by spraying titanium onto an upper layer, an anticorrosive effect is obtained. A room temperature arc-type metal spraying method using the tin according to claim 2 as a spraying material.
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| US8726874B2 (en) | 2012-05-01 | 2014-05-20 | Ford Global Technologies, Llc | Cylinder bore with selective surface treatment and method of making the same |
| US8752256B2 (en) | 2008-04-21 | 2014-06-17 | Ford Global Technologies, Llc | Method for preparing a surface for applying a thermally sprayed layer |
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| US9079213B2 (en) | 2012-06-29 | 2015-07-14 | Ford Global Technologies, Llc | Method of determining coating uniformity of a coated surface |
| US9382868B2 (en) | 2014-04-14 | 2016-07-05 | Ford Global Technologies, Llc | Cylinder bore surface profile and process |
| US9511467B2 (en) | 2013-06-10 | 2016-12-06 | Ford Global Technologies, Llc | Cylindrical surface profile cutting tool and process |
| US10220453B2 (en) | 2015-10-30 | 2019-03-05 | Ford Motor Company | Milling tool with insert compensation |
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| US8752256B2 (en) | 2008-04-21 | 2014-06-17 | Ford Global Technologies, Llc | Method for preparing a surface for applying a thermally sprayed layer |
| US8877285B2 (en) | 2011-11-22 | 2014-11-04 | Ford Global Technologies, Llc | Process for repairing a cylinder running surface by means of plasma spraying processes |
| US8833331B2 (en) | 2012-02-02 | 2014-09-16 | Ford Global Technologies, Llc | Repaired engine block and repair method |
| US8726874B2 (en) | 2012-05-01 | 2014-05-20 | Ford Global Technologies, Llc | Cylinder bore with selective surface treatment and method of making the same |
| US10221806B2 (en) | 2012-05-01 | 2019-03-05 | Ford Global Technologies, Llc | Cylindrical engine bore |
| US9079213B2 (en) | 2012-06-29 | 2015-07-14 | Ford Global Technologies, Llc | Method of determining coating uniformity of a coated surface |
| US9511467B2 (en) | 2013-06-10 | 2016-12-06 | Ford Global Technologies, Llc | Cylindrical surface profile cutting tool and process |
| US9382868B2 (en) | 2014-04-14 | 2016-07-05 | Ford Global Technologies, Llc | Cylinder bore surface profile and process |
| US10220453B2 (en) | 2015-10-30 | 2019-03-05 | Ford Motor Company | Milling tool with insert compensation |
| CN109688782A (en) * | 2019-01-31 | 2019-04-26 | 常州斯威克新材料科技有限公司 | A kind of no conductive particle electromagnetic shielding film and preparation method thereof |
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