JP2008155129A - Foam spraying method - Google Patents

Foam spraying method Download PDF

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JP2008155129A
JP2008155129A JP2006346968A JP2006346968A JP2008155129A JP 2008155129 A JP2008155129 A JP 2008155129A JP 2006346968 A JP2006346968 A JP 2006346968A JP 2006346968 A JP2006346968 A JP 2006346968A JP 2008155129 A JP2008155129 A JP 2008155129A
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particles
substrate
temperature
particle
speed
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JP4863487B2 (en
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Hitoshi Kawakita
仁 川喜多
Seiji Kuroda
聖治 黒田
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National Institute for Materials Science
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National Institute for Materials Science
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  • Coating By Spraying Or Casting (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foam spraying method which allows e.g. metal particles to be adhered firmly to a substrate comprising e.g. a synthetic resin. <P>SOLUTION: The foam spraying method uses a synthetic resin as the substrate and comprises spraying particles by setting the speed V of spraying the particles, the temperature T of the particles and the flying distance L of the particles so that K, defined by equation 1, becomes no larger than 12 at temperatures T of heating the particles which equals to 4×10<SP>2</SP>°C or higher. Equation 1: K=V×T/L (wherein V is the speed (×100 m/s) of spraying particles; T is the temperature of particles (×100°C); L is the flying distance (×100 mm), or distance from the spraying outlet to the surface of the substrate). <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、粒子を加熱して超音速で基材に吹き付け付着させるウォームスプレー法に関し、合成樹脂基材に対する適用法に関する。   The present invention relates to a warm spray method in which particles are heated and sprayed and adhered to a substrate at supersonic speed, and to an application method to a synthetic resin substrate.

従来より、ウォームスプレー法は金属材料に粒子を付着させるのに広く用いられまた研究もされてきた。
その付着理論は、超音速で吹き付けられた粒子が、その温度と衝撃により基材にと衝突する時点で瞬時に溶解し固着するものと推測されていたので、合成樹脂のように軟質で耐熱性が金属などの無機材料などにくらべ遥かに低い基材に対して、金属などの粒子を吹き付けるのは不可能と推察されていた。
Traditionally, the warm spray method has been widely used and studied to attach particles to metallic materials.
The adhesion theory was presumed that the particles sprayed at supersonic speed were instantly dissolved and fixed when they collided with the substrate due to the temperature and impact, so they were soft and heat-resistant like synthetic resins. However, it has been assumed that it is impossible to spray particles such as metal on a base material that is far lower than inorganic materials such as metal.

本発明は、このような従来観念を打破し、ウォームスプレー法により、合成樹脂に対しても金属などの粒子を強く付着させることを目的とした。   An object of the present invention is to break such a conventional idea and strongly adhere particles such as metal to a synthetic resin by a warm spray method.

発明1のウォームスプレー法は、前記基材が合成樹脂であり、前記粒子の加熱温度(T)が4×10℃以上であって下記式1においてKが12未満となるように、粒子の噴射速度(V)と粒子温度(T)と粒子の飛翔距離(L)とを設定して噴射することを特徴とする。
(式1)
K=V×T/L
V:粒子の噴射速度(×100m/s)
T:粒子温度(×100℃)
L:粒子飛翔距離(噴射口から基材表面までの距離:×100mm)
発明2は、発明1のウォームスプレー法において、その粒子は金属粒子であることを特徴とする。
In the warm spray method of the invention 1, the base material is a synthetic resin, the heating temperature (T) of the particles is 4 × 10 2 ° C. or higher, and K in the following formula 1 is less than 12, The jetting speed (V), the particle temperature (T), and the flight distance (L) of the particles are set and jetted.
(Formula 1)
K = V × T / L
V: Particle injection speed (× 100 m / s)
T: Particle temperature (x100 ° C)
L: Particle flight distance (distance from the injection port to the substrate surface: x 100 mm)
Invention 2 is characterized in that, in the warm spray method of Invention 1, the particles are metal particles.

発明1により、合成樹脂基材に対し粒子をウォームスプレー法により強固に付着させることができた。
さらに発明2では、金属をも合成樹脂基材に付着させることができた。
According to the invention 1, the particles can be firmly attached to the synthetic resin substrate by the warm spray method.
Furthermore, in the invention 2, the metal can be adhered to the synthetic resin substrate.

本発明により吹きつけ付着可能な粒子は、以下のようなものが可能である。
チタンおよびチタン合金、鉄基合金、コバルト基合金、ニッケル基合金、アルミニウム合金。粒子径は150ミクロン以下。
The particles which can be sprayed and adhered according to the present invention can be as follows.
Titanium and titanium alloy, iron base alloy, cobalt base alloy, nickel base alloy, aluminum alloy. Particle size is 150 microns or less.

上記のような粒子は、以下のような樹脂よりなる基板に対して吹きつけ付着可能である。

ポリエチレン,ポリ塩化ビニル,ポリプロピレン,ポリスチレン、ポリ酢酸ビニル,ABS樹脂,AS樹脂,アクリル樹脂、ポリアセタール,ポリイミド,ポリカーボネート,変性ポリフェニレンエーテル(PPE),ポリブチレンテレフタレート、ポリアリレート,ポリスルホン,ポリフェニレンスルフィド,ポリエーテルエーテルケトン,ポリイミド樹脂,フッ素樹脂、ポリアミドイミド,ポリエーテルエーテルケトン
The particles as described above can be sprayed and adhered to a substrate made of the following resin.

Polyethylene, polyvinyl chloride, polypropylene, polystyrene, polyvinyl acetate, ABS resin, AS resin, acrylic resin, polyacetal, polyimide, polycarbonate, modified polyphenylene ether (PPE), polybutylene terephthalate, polyarylate, polysulfone, polyphenylene sulfide, polyether Ether ketone, polyimide resin, fluorine resin, polyamide imide, polyether ether ketone

本実施例は、発明に使用するウオームスレーガンの一例を説明する。
図1に例示したように、灯油等の燃料と酸素ガスの混合による燃焼が行われる燃焼室(Chamber)(1)と、その出口のノズル(4)を介して連続する導管(2)と、この導管(2)内において、燃焼ガスに対して金属TiまたはTi合金等の粒子(Powder)が供給されて加熱されるバレル(Barrel)部とを有し、全体として冷却水により冷却されるようにしたものがその基本的な構成となる。
このような構成のガンを用いた皮膜の形成方法では、上記粉末の供給時のガス中の酸素濃度を1vol%に調整して燃焼する。
また、粒子がプラスチック基材に衝突する位置における飛行粒子の温度を410℃以下、同じくガス流速の温度は209℃以下となるようにする。なお、耐熱温度が高い種類の樹脂では、粒子およびガスともに上限温度を高く設定できる。例えば、耐熱温度が300℃といったポリイミド樹脂があるので、ガス流速の温度を上記よりも上げ、より緻密なチタンコーティングを行えるようにすることも可能である。(本条件におけるガス流速の最大到達温度1410℃については、基材位置における飛行粒子およびガス流速の温度を決めるための十分条件ではありますが、必要条件ではないと考え、削除しました。)
本発明は、この制御を、燃焼ガス中への不活性ガスの混合により行う。
This example illustrates an example of a warm slug gun used in the invention.
As illustrated in FIG. 1, a combustion chamber (Chamber) (1) in which combustion is performed by mixing fuel such as kerosene and oxygen gas, and a conduit (2) continuous through a nozzle (4) at the outlet thereof, The conduit (2) has a barrel portion that is heated by supplying particles such as metal Ti or Ti alloy to the combustion gas, and is cooled by cooling water as a whole. This is the basic configuration.
In the method of forming a film using the gun having such a configuration, the oxygen concentration in the gas at the time of supplying the powder is adjusted to 1 vol% to burn.
Further, the temperature of the flying particles at the position where the particles collide with the plastic substrate is set to 410 ° C. or lower, and the temperature of the gas flow rate is set to 209 ° C. or lower. In the case of a resin having a high heat-resistant temperature, the upper limit temperature can be set high for both particles and gas. For example, since there is a polyimide resin having a heat resistant temperature of 300 ° C., it is possible to increase the temperature of the gas flow rate so as to perform a finer titanium coating. (The maximum gas flow temperature reached at 1410 ° C under these conditions is a sufficient condition for determining the temperature of flying particles and gas flow velocity at the base material position.
In the present invention, this control is performed by mixing an inert gas into the combustion gas.

図1の構成例では、燃焼室(Chamber)(1)内にガス混合室(5)を設け、ここに不活性ガスが供給混合されるようにしている。このための装置構成やその細部については各種の態様が考慮されてよいことは言うまでもない。   In the configuration example of FIG. 1, a gas mixing chamber (5) is provided in a combustion chamber (Chamber) (1), and an inert gas is supplied and mixed therein. It goes without saying that various aspects may be taken into consideration for the device configuration and the details thereof.

不活性ガスの混合により、ガス温度と酸素濃度の制御が可能とされる。  The gas temperature and oxygen concentration can be controlled by mixing the inert gas.

そして、図1に示した非対象物(Substrate)への加熱された粒子の衝突速度を500m/s以上とする。   And the collision speed of the heated particle | grains to the non-object (Substrate) shown in FIG. 1 shall be 500 m / s or more.

酸素濃度が5vol%を超える場合、ガス温度が1500℃を超える場合、さらには衝突速度が500m/s未満の場合には、上記のとおりのTiの酸化(5mass%以上の酸素含有量)を抑えることや、緻密な組織を得ることは難しくなる。一方、酸素濃度の下限については、高速フレームを生成させる燃焼反応後の酸素含有割合として可能な限り低いことが望ましい。ガス温度は、Ti金属またはその合金粒子の加熱状態と、その流速を左右する。その下限については装置のスケールや粉末の供給料、粉末の種類等によっても相違する。   When the oxygen concentration exceeds 5 vol%, when the gas temperature exceeds 1500 ° C., and when the collision speed is less than 500 m / s, the oxidation of Ti as described above (oxygen content of 5 mass% or more) is suppressed. It is difficult to obtain a dense structure. On the other hand, the lower limit of the oxygen concentration is desirably as low as possible as the oxygen content ratio after the combustion reaction that generates the high-speed flame. The gas temperature affects the heating state of the Ti metal or its alloy particles and its flow rate. The lower limit differs depending on the scale of the apparatus, the powder supply, the type of powder, and the like.

以上のことを考慮して、実際の操作では、装置スケール等をも考慮することで、不活性ガスの供給量、供給速度が定められることになる。   In consideration of the above, in the actual operation, the supply amount and supply speed of the inert gas are determined by considering the apparatus scale and the like.

不活性ガスの種類については、たとえば代表的にはN(窒素ガス)や、Ar(アルゴン)、He(ヘリウム)等の希ガスが好適なものとして示される。また、条件によってはCO等の他のものであってもよい。 As for the kind of the inert gas, for example, a rare gas such as N 2 (nitrogen gas), Ar (argon), or He (helium) is typically shown as a preferable one. Moreover, other things such as CO 2 may be used depending on conditions.

上記ガンを使用して、以下の条件により、各実験例の粒子を噴射してその性能を確認した。

燃料(灯油):0.29 dm・min−1
酸素:0.547 m・min−1
窒素:2.0 m・min−1
ガン出口から基材までの距離:表1に示すとおり
パス数:8
ガン移動速度:700 mm・s−1
ピッチ幅:4 mm
N2Gas(窒素ガス):表1に示すとおり
Using the above-mentioned gun, the performance was confirmed by injecting the particles of each experimental example under the following conditions.

Fuel (kerosene): 0.29 dm 3 · min −1
Oxygen: 0.547 m 3 · min −1
Nitrogen: 2.0 m 3 · min −1
Distance from gun outlet to substrate: Number of passes as shown in Table 1: 8
Gun movement speed: 700 mm · s -1
Pitch width: 4 mm
N2Gas (nitrogen gas): As shown in Table 1

本発明の開発のために行った実験例を表1に示す。


前記実験例の内、1から4は本発明の実施例であり、その余は比較例である。
Table 1 shows examples of experiments conducted for the development of the present invention.


Among the experimental examples, 1 to 4 are examples of the present invention, and the rest are comparative examples.

本発明は、プラスチック上への美観装飾、耐有機溶媒コーティング、プラスチック表面への耐摩耗性付与等の金属若しくは無機材料のプラスチック表面へのコーティングに有用である。   INDUSTRIAL APPLICABILITY The present invention is useful for coating a plastic surface with a metal or an inorganic material such as aesthetic decoration on plastic, organic solvent coating, and imparting abrasion resistance to a plastic surface.

ウォームスプレーガンを示す概略縦断正面図Schematic longitudinal front view showing a warm spray gun 実験NO.(写真に対応する実験NO.)1にて得られたサンプルを示す写真(スケール1目盛1mm)Photograph showing the sample obtained in Experiment No. (Experiment No. corresponding to the photograph) 1 (Scale 1 scale 1mm) 実験NO.(写真に対応する実験NO.)1の基材と吹き付け粒子との境を示す写真Experiment No. (Experiment No. corresponding to photograph) Photo showing the boundary between the base material and sprayed particles 実験NO.(写真に対応する実験NO.)1の基材と吹き付け粒子との境を示す拡大写真Experiment No. (Experiment No. corresponding to the photograph) 1 Enlarged photo showing the boundary between the base material and sprayed particles 実験NO.(写真に対応する実験NO.)1の基材と吹き付け粒子との境を示す4倍拡大写真Experiment No. (Experiment No. corresponding to the photograph) 4x enlarged photo showing the boundary between the base material of 1 and the sprayed particles

Claims (2)

粒子を加熱して超音速で基材に吹き付け付着させるウォームスプレー法において、前記基材が合成樹脂であり、前記粒子の加熱温度(T)が4×10℃以上であって下記式1においてKが12未満となるように、粒子の噴射速度(V)と粒子温度(T)と粒子の飛翔距離(L)とを設定して噴射することを特徴とするウォームスプレー法。
(式1)
K=V×T/L
V:粒子の噴射速度(×100m/s)
T:粒子温度(×100℃)
L:粒子飛翔距離(噴射口から基材表面までの距離:×100mm)
In a warm spray method in which particles are heated and sprayed and adhered to a substrate at supersonic speed, the substrate is a synthetic resin, and the heating temperature (T) of the particles is 4 × 10 2 ° C. or higher, A warm spray method, characterized in that the spray is performed by setting the particle injection speed (V), particle temperature (T), and particle flight distance (L) such that K is less than 12.
(Formula 1)
K = V × T / L
V: Particle injection speed (× 100 m / s)
T: Particle temperature (x100 ° C)
L: Particle flight distance (distance from the injection port to the substrate surface: x 100 mm)
請求項1に記載のウォームスプレー法において、その粒子は金属粒子であることを特徴とするウォームスプレー法。 2. The warm spray method according to claim 1, wherein the particles are metal particles.
JP2006346968A 2006-12-25 2006-12-25 Warm spray method Active JP4863487B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012161775A (en) * 2011-02-09 2012-08-30 Taiyo Nippon Sanso Corp Membrane element and manufacturing method thereof, and membrane module
JP2015147981A (en) * 2014-02-07 2015-08-20 地方独立行政法人 岩手県工業技術センター Coated body

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08290516A (en) * 1995-04-25 1996-11-05 Ishihara Sangyo Kaisha Ltd Fluororesin film and its preparation
JP2003183805A (en) * 2001-10-09 2003-07-03 National Institute For Materials Science Method for forming metal film with hvof thermal spray gun and thermal spray apparatus
JP2005512774A (en) * 2001-12-14 2005-05-12 イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー High speed oxygen fuel (HVOF) method and apparatus for spray coating non-molten polymer
JP2006212624A (en) * 2005-01-07 2006-08-17 Kobe Steel Ltd Thermal spraying nozzle device and thermal spraying equipment
JP2006274326A (en) * 2005-03-28 2006-10-12 National Institute For Materials Science METHOD FOR FORMING Ti FILM

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08290516A (en) * 1995-04-25 1996-11-05 Ishihara Sangyo Kaisha Ltd Fluororesin film and its preparation
JP2003183805A (en) * 2001-10-09 2003-07-03 National Institute For Materials Science Method for forming metal film with hvof thermal spray gun and thermal spray apparatus
JP2005512774A (en) * 2001-12-14 2005-05-12 イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー High speed oxygen fuel (HVOF) method and apparatus for spray coating non-molten polymer
JP2006212624A (en) * 2005-01-07 2006-08-17 Kobe Steel Ltd Thermal spraying nozzle device and thermal spraying equipment
JP2006274326A (en) * 2005-03-28 2006-10-12 National Institute For Materials Science METHOD FOR FORMING Ti FILM

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012161775A (en) * 2011-02-09 2012-08-30 Taiyo Nippon Sanso Corp Membrane element and manufacturing method thereof, and membrane module
JP2015147981A (en) * 2014-02-07 2015-08-20 地方独立行政法人 岩手県工業技術センター Coated body

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