JP2955808B2 - Thermal spray burner - Google Patents
Thermal spray burnerInfo
- Publication number
- JP2955808B2 JP2955808B2 JP5105898A JP10589893A JP2955808B2 JP 2955808 B2 JP2955808 B2 JP 2955808B2 JP 5105898 A JP5105898 A JP 5105898A JP 10589893 A JP10589893 A JP 10589893A JP 2955808 B2 JP2955808 B2 JP 2955808B2
- Authority
- JP
- Japan
- Prior art keywords
- flame
- burner
- holes
- row
- hole
- 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 - Fee Related
Links
Landscapes
- Coating By Spraying Or Casting (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、溶融金属容器及びそれ
に類するものの溶射補修、溶射施工、溶射解体等に用い
る溶射バーナに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermal spray burner for use in repairing, spraying, dismantling, etc., a molten metal container and the like.
【０００２】[0002]
【従来の技術】例えば溶射補修では、溶射バーナから粉
末材料と燃料ガスを同一方向に吐出させ燃料ガスの燃焼
による火炎によって粉末材料の粒子を溶融し、被補修面
に付着させて補修しようとするものである。2. Description of the Related Art In a thermal spray repair, for example, a powder material and a fuel gas are discharged from a thermal spray burner in the same direction, and the particles of the powder material are melted by a flame caused by the combustion of the fuel gas and adhered to a surface to be repaired to perform repair. Things.
【０００３】ここで、従来の技術、例えば実公平４−３
７６４３号公報では、図１０に示すように溶射バーナ３
３の中央部に材料孔列３１を材料孔の噴射方向がバーナ
中心の延長線３４上で交叉するように配置し、火炎孔列
３２を２列以上同心円上に配置することにより粉末材料
の集中性を改善し、損傷部を効率良く補修することを目
的としている。[0003] Here, conventional techniques, for example, Japanese Utility Model 4-3
No. 7643 discloses a thermal spray burner 3 as shown in FIG.
In the central part of 3, the material holes are arranged so that the injection direction of the material holes intersects on the extension line 34 at the center of the burner, and the flame holes 32 are arranged in two or more concentric circles to concentrate the powder material. The purpose is to improve the performance and repair the damaged part efficiently.
【０００４】しかしながら、この技術では、粉末材料の
単位時間当りの紛体供給量を増加した場合、材料流３５
内の粉末材料の粒子が高濃度となり、火炎流３６から遠
い材料流３５中心部の粉末材料は火炎からの熱エネルギ
ーを受けにくくなり、粉末材料の粒子の溶融性は不十分
となり結果として溶融できる単位時間当りの紛体供給量
は制限されていた。However, according to this technique, when the amount of powder supplied per unit time of the powder material is increased, the material flow 35
The particles of the powder material therein become highly concentrated, and the powder material in the center of the material stream 35 far from the flame stream 36 is less susceptible to heat energy from the flame, so that the particles of the powder material have insufficient fusibility and can be melted as a result. The amount of powder supplied per unit time was limited.
【０００５】[0005]
【発明が解決しようとする課題】従来の溶射バーナで
は、粉末材料の噴射方向をバーナ中心の延長線上で交叉
するように配置し、粉末材料の集中性を改善し、損傷部
を効率良く補修することを目的としているが、この技術
では、粉末材料の単位時間当りの紛体供給量を増加した
場合、材料流内の粉末材料の粒子は高濃度となり火炎流
から遠い材料流中心部の粉末材料の粒子は火炎からの熱
エネルギーを受けにくく、溶融できる単位時間当りの紛
体供給量に制限があった。In the conventional thermal spray burner, the direction of injection of the powder material is arranged so as to intersect on the extension of the center of the burner, thereby improving the concentration of the powder material and efficiently repairing the damaged portion. However, in this technique, when the amount of powder supplied per unit time of the powder material is increased, the particles of the powder material in the material stream become high in concentration, and the powder material in the center of the material flow far from the flame stream becomes denser. The particles are less susceptible to heat energy from the flame, and the amount of powder that can be melted per unit time is limited.
【０００６】本発明は、粉末材料が火炎より受ける熱エ
ネルギーの効率を上げ、粉末材料の粒子を完全溶融でき
る単位時間当たりの紛体供給量を増加することにより、
単位時間当りの溶射能力を向上するバーナを供給するこ
とを目的とする。The present invention increases the efficiency of thermal energy received by a powder material from a flame, and increases the amount of powder supplied per unit time at which particles of the powder material can be completely melted.
An object of the present invention is to provide a burner that improves the spraying performance per unit time.
【０００７】[0007]
【課題を解決するための手段】本発明のバーナは、火炎
孔・材料孔の噴射方向を変えることで、単位時間当りの
溶射能力を向上させる。つまり、溶射バーナの材料孔か
ら噴射した粉末材料を、火炎に衝突させることでバーナ
噴射面近傍の高温火炎内に粉末材料の粒子を分散・投入
することによって、完全溶融した粉末材料の粒子量を増
加させることにより、単位時間当りの溶射能力を向上す
るものである。According to the burner of the present invention, the spraying performance per unit time is improved by changing the injection direction of the flame holes / material holes. In other words, the powder material injected from the material hole of the thermal spray burner collides with the flame to disperse and inject the particles of the powder material into the high-temperature flame near the burner injection surface, thereby reducing the particle amount of the powder material completely melted. By increasing the value, the spraying performance per unit time is improved.
【０００８】具体的には、材料孔列３を外周火炎孔列５
と内周火炎孔列４の間に同心円上に配列した溶射バーナ
１において、前記火炎孔列５、４の各火炎孔の噴射方向
８、９がバーナ中心方向に向くようにし、かつ、材料孔
列３の相隣る材料孔の噴射方向７、６は外周火炎孔列方
向と内周火炎孔列方向に交互に向くように配列したこと
を特徴とする溶射バーナで、火炎内に粉末材料の粒子を
高濃度で均一分散させるため火炎の熱エネルギーを高効
率で粉末材料の粒子に伝達することができ、単位時間当
りの溶射能力が向上できる。[0008] Specifically, the material hole array 3 is replaced with the outer peripheral flame hole array 5.
In the thermal spray burner 1 arranged concentrically between the inner peripheral flame hole array 4 and the inner peripheral flame hole array 4, the spray directions 8, 9 of the respective flame holes of the flame hole arrays 5, 4 are directed to the burner center direction. The spraying directions 7 and 6 of the material holes adjacent to each other in the row 3 are arranged so as to face alternately in the outer flame hole row direction and the inner flame hole row direction. Since the particles are uniformly dispersed at a high concentration, the thermal energy of the flame can be transmitted to the particles of the powder material with high efficiency, and the spraying performance per unit time can be improved.
【０００９】第一列目の火炎孔列１５と第二列目の火炎
孔列１６の間に材料孔列１３を配列した溶射バーナ１１
において、材料孔列１３の相隣る材料孔の噴射方向１４
が第一列目の火炎孔列１５の方向と第二列目の火炎孔列
１６に交互に向くように配列したことを特徴とする溶射
バーナで、火炎内に粉末材料の粒子を高濃度で均一分散
させるため火炎の熱エネルギーを高効率で粉末材料の粒
子に伝達することができ、単位時間当りの溶射能力が向
上できる。A thermal spray burner 11 in which a material hole row 13 is arranged between a first row of fire hole rows 15 and a second row of fire hole rows 16.
The injection direction 14 of the adjacent material holes of the material hole row 13
Are arranged so as to alternately face the direction of the first row of flame holes 15 and the second row of fire holes 16, wherein the particles of the powdered material have a high concentration in the flame. Because of uniform dispersion, the thermal energy of the flame can be transmitted to the particles of the powder material with high efficiency, and the spraying performance per unit time can be improved.
【００１０】さらに、第一列目の火炎孔列２５と第二列
目の火炎孔列２６の間に材料孔列２３を配列した溶射バ
ーナ２１において、前記火炎孔列２５、２６の各火炎孔
の噴射方向２７、２８が材料孔列２３の各材料孔からバ
ーナ噴射面２２に対し直角となるようにした延長線２９
に向くようにし、かつ、材料孔列２３の相隣る材料孔の
噴射方向２４は第一列目の火炎孔列２５の方向と第二列
目の火炎孔列２６の方向に交互に向くように配列したこ
とを特徴とする溶射バーナで、上記と同様に、火炎内に
粉末材料の粒子を高濃度で均一分散させるため火炎の熱
エネルギーを高効率で粉末材料の粒子に伝達することが
でき、溶射能力が向上できる。Further, in the thermal spray burner 21 in which the material hole array 23 is arranged between the first flame hole array 25 and the second flame hole array 26, each of the flame holes of the flame hole arrays 25 and 26 is provided. Extension lines 29 in which the injection directions 27 and 28 of each of the material holes of the material hole row 23 are perpendicular to the burner injection surface 22.
And the injection direction 24 of the material holes adjacent to the material hole row 23 is alternately directed to the direction of the first flame hole row 25 and the direction of the second flame hole row 26. A thermal spray burner characterized by being arranged in the same manner as described above, so that the heat energy of the flame can be transmitted to the particles of the powder material with high efficiency in order to uniformly disperse the particles of the powder material in the flame at a high concentration. The spraying ability can be improved.
【００１１】[0011]
【実施例】以下、本発明の実施例について図面を参照し
ながら作用とともに説明する。 ｛実施例１｝本発明の第１実施例の断面図（ａ）及び正
面図（ｂ）を図１に示す。図１において、火炎および粉
末材料を吐出する溶射バーナ３は、バーナ噴射面２に材
料孔列３を外周火炎孔列５と内周火炎孔列４の間に同心
円上に配列し、前記火炎孔列５、４の各火炎孔の噴射方
向８、９がバーナ中心方向に向くようにし、かつ、材料
孔列３の相隣る材料孔の噴射方向７、６は外周火炎孔列
５と内周火炎孔列４に交互に向くように配列された構造
を有している。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. Embodiment 1 FIG. 1 shows a cross-sectional view (a) and a front view (b) of a first embodiment of the present invention. In FIG. 1, a thermal spray burner 3 for discharging a flame and a powder material has a material hole array 3 arranged concentrically between an outer flame hole array 5 and an inner flame hole array 4 on a burner injection surface 2. The injection directions 8, 9 of the respective flame holes of the rows 5, 4 are directed toward the center of the burner, and the injection directions 7, 6 of the adjacent material holes of the material hole row 3 correspond to the outer flame hole row 5 and the inner circumference. It has a structure arranged so as to face the flame hole row 4 alternately.
【００１２】材料孔列３の相隣る材料孔の噴射方向７、
６が外周火炎孔列５方向と内周火炎孔列４方向に交互に
向くように配列することで、噴射された粉末材料の粒子
は火炎と衝突部１０で衝突して火炎内に均一に分散され
る。火炎は、バーナ噴射面２に近いほど高温であるた
め、この衝突をバーナ噴射面２に近い位置とすることに
より、より大きい熱エネルギーを粉末材料の粒子に伝達
することができる。Injection direction 7 of adjacent material holes in material hole row 3,
The particles of the injected powder material collide with the flame in the collision portion 10 and are uniformly dispersed in the flame by arranging the particles 6 so as to alternately face the outer flame hole row 5 direction and the inner flame hole row 4 direction. Is done. Since the flame is hotter as it is closer to the burner injection surface 2, by setting this collision to a position closer to the burner injection surface 2, larger thermal energy can be transmitted to the particles of the powder material.
【００１３】この場合、バーナより噴射された粉末材料
が火炎内に包含されるように、材料孔列３の各材料孔は
前記火炎孔列５、４の各火炎孔と相対することが好まし
い。材料孔列３及び前記火炎孔列５、６の列数は必ずし
も一列とする必要はなく、時間当りの燃焼量及び紛体供
給量により多数列となっても前述のような噴射方向とし
て火炎内に材料を均一に分散させるような火炎孔と材料
孔を構成した溶射バーナとすることもできる。In this case, it is preferable that each material hole of the material hole row 3 is opposed to each flame hole of the flame hole rows 5 and 4 so that the powder material injected from the burner is included in the flame. The number of rows of material holes 3 and the number of rows of flame holes 5 and 6 are not necessarily required to be one. Even if the number of rows is large depending on the amount of combustion per hour and the amount of powder supplied, the injection direction as described above can be applied to the flame. A thermal spray burner having a flame hole and a material hole for uniformly dispersing the material can also be provided.
【００１４】さらに、衝突部１０は前述のようにバーナ
噴射面２に近づける方が良い。火炎孔と材料孔の噴射方
向は、火炎孔列５、６の噴射方向をバーナ噴射面２と直
角となるような火炎孔列５、６の各火炎孔から引いた延
長線に対して、バーナ中心方向に２゜〜１０゜の角度と
し、材料孔列３の相隣る材料孔の噴射方向をバーナ噴射
面２と直角となるように材料孔列３の各材料孔から引い
た延長線に対して、バーナ中心方向に２゜〜１０゜の角
度に、また、反バーナ中心方向に２゜〜１０゜の角度に
交互に向くようにし、その時の衝突位置はバーナ噴射２
から１０ｍｍ〜５００ｍｍとする。Further, it is better to bring the collision portion 10 closer to the burner injection surface 2 as described above. The injection direction of the flame holes and the material holes is determined by using the burner with respect to an extension line drawn from each of the flame holes of the flame hole arrays 5 and 6 so that the injection direction of the flame hole arrays 5 and 6 is perpendicular to the burner injection surface 2. An angle of 2 ° to 10 ° with respect to the center direction, and an extension line drawn from each material hole of the material hole array 3 so that the injection direction of the material hole adjacent to the material hole array 3 is perpendicular to the burner injection surface 2 On the other hand, the burner is directed alternately at an angle of 2 ° to 10 ° in the direction of the burner center and at an angle of 2 ° to 10 ° in the direction of the anti-burner center.
From 10 mm to 500 mm.
【００１５】さらに、衝突位置での火炎温度が２０００
℃以上であることが粉末材料の粒子を完全溶融する上で
好ましい。しかし、噴射方向の角度、衝突位置の距離及
び火炎温度の各数値が上記のように得られない場合には
設計上適宜決めれば良い。Further, when the flame temperature at the collision position is 2000
It is preferable that the temperature is not less than ° C in order to completely melt the particles of the powder material. However, when the values of the angle of the injection direction, the distance of the collision position, and the flame temperature cannot be obtained as described above, they may be appropriately determined in design.
【００１６】このようにバーナ噴射面２に近い位置で噴
射された粉末材料と火炎を衝突させて火炎内に粉末材料
の粒子を高濃度で均一に分散させることで火炎の熱エネ
ルギーを高効率で粉末材料の粒子に伝達できるため、完
全溶融した粉末材料の粒子量が増加し、単位時間当りの
溶射能力が向上する。As described above, the powder material injected at a position close to the burner injection surface 2 collides with the flame, and the particles of the powder material are uniformly dispersed in the flame at a high concentration. Since the particles can be transmitted to the particles of the powder material, the amount of particles of the powder material completely melted increases, and the spraying performance per unit time is improved.
【００１７】このような本発明の溶射バーナと従来の溶
射バーナとを用いた場合の溶射施工体の比較を行った。
第１表の溶射バーナを使用して、第２表のように単位時
間当りの燃焼量、溶射距離、溶射材料を両者とも同一条
件とし、それぞれ単位時間当りの粉体供給量を同様に変
化させてテストした。[0017] A comparison was made between the sprayed articles using such a sprayed burner of the present invention and a conventional sprayed burner.
Using the spraying burners shown in Table 1, the amount of combustion per unit time, spraying distance, and spraying material were the same as shown in Table 2, and the amount of powder supplied per unit time was similarly varied. Tested.
【００１８】その結果、図４及び図５のグラフに示すよ
うに、従来の溶射バーナでは単位時間当りの紛体供給量
が増加すれば、施工体の付着歩留が低下し、施工体の見
掛気孔率が増加するが、本発明の溶射バーナを用いれ
ば、単位時間当りの紛体供給量を増加したにも拘らず施
工体の付着歩留及び見掛気孔率のいずれも変化しない結
果となり、従来バーナに比し単位時間当りの紛体供給量
を５０％増加できることが確認できた。As a result, as shown in the graphs of FIGS. 4 and 5, in the conventional thermal spray burner, if the amount of powder supplied per unit time increases, the yield of adherence of the work decreases, and the apparent appearance of the work appears. Although the porosity increases, the use of the thermal spray burner of the present invention results in no change in the adhesion yield and the apparent porosity of the construction body despite the increase in the amount of powder supplied per unit time. It was confirmed that the amount of powder supplied per unit time can be increased by 50% compared to the burner.
【００１９】以上のように、本発明によって単位時間当
りの溶射能力の向上が得られる。なお、本発明の火炎孔
と材料孔の延長線は、必ずしも交差する構造にする必要
はなく、火炎孔の延長線と材料孔の延長線がバーナの外
側でねじれの位置で接近することによって、火炎の熱エ
ネルギーを高効率で受け取って、同様の効果を得るよう
な火炎孔と材料孔を構成した溶射バーナにすることもで
きる。この場合、溶射バーナから出る火炎は一定の太さ
を有するので、材料孔の延長線はできるだけ火炎の内側
を通過して中心に近づくようにする方がよい。As described above, according to the present invention, the spraying performance per unit time can be improved. In addition, the extension of the flame hole and the material hole of the present invention does not necessarily need to have a crossing structure, and the extension of the flame hole and the extension of the material hole approach at the position of the twist outside the burner, A thermal spray burner having a flame hole and a material hole for obtaining the same effect by receiving the heat energy of the flame with high efficiency can also be provided. In this case, since the flame emerging from the spray burner has a certain thickness, it is better that the extension of the material hole passes through the inside of the flame as close as possible to the center.
【００２０】｛実施例２｝本発明の第２実施例の外観図
を図２に示す。図２において、火炎及び粉末材料を吐出
する溶射バーナ１１は、バーナ噴射面１２に火炎孔列１
５と別の火炎孔列１６との間に材料孔列１３を配置し、
材料孔列１３の相隣る材料孔の噴射方向１４が第１列目
の火炎孔列１５の方向と第２列目の火炎孔列１６の方向
に交互に向くように配列させた構造を有している。Embodiment 2 FIG. 2 is an external view of a second embodiment of the present invention. In FIG. 2, a thermal spray burner 11 for discharging a flame and a powder material has a flame hole array 1 on a burner injection surface 12.
A material hole array 13 is arranged between 5 and another flame hole array 16;
There is a structure in which the injection direction 14 of the material holes adjacent to the material hole array 13 is alternately oriented in the direction of the first flame hole array 15 and the direction of the second flame hole array 16. doing.
【００２１】材料孔列１３の相隣る材料孔の噴射方向１
４が第１列目の火炎孔列１５の方向と第２列目の火炎孔
列１６の方向に交互に向くように配列することで、噴射
された粉末材料は火炎と衝突して火炎内に均一に分散さ
れる。Injection direction 1 of adjacent material holes in material hole row 13
4 are arranged so as to face alternately in the direction of the first row of flame holes 15 and in the direction of the second row of fire holes 16, so that the injected powder material collides with the flame and enters the flame. Dispersed uniformly.
【００２２】火炎は、バーナ噴射面１２に近いほど高温
であるため、この衝突をバーナ噴射面１２に近い位置と
することにより、より大きい熱エネルギーを粉末材料に
伝達することができる。この場合、バーナより噴射され
た粉末材料が火炎内に包含されるように、材料孔列１３
の長さは前記火炎孔列１５、１６の長さより短くするこ
とが好ましい。Since the temperature of the flame is higher as the flame is closer to the burner injection surface 12, by setting this collision at a position closer to the burner injection surface 12, more heat energy can be transmitted to the powder material. In this case, the material hole array 13 is arranged so that the powder material injected from the burner is included in the flame.
Is preferably shorter than the length of the flame hole rows 15 and 16.
【００２３】また、材料孔列１３の各材料孔は前記火炎
孔列１５、１６の各火炎孔と相対することが好ましい。
材料孔列１３及び前記火炎孔列１５、１６の列数は必ず
しも一列とする必要はなく、単位時間当りの燃焼量及び
紛体供給量により多数列となっても前述のような噴射方
向として火炎内に粉末材料を均一に分散させるような火
炎孔と材料孔を構成した溶射バーナとすることもでき
る。It is preferable that each material hole of the material hole row 13 is opposed to each flame hole of the flame hole rows 15 and 16.
The number of rows of material holes 13 and the number of rows of flame holes 15 and 16 are not necessarily required to be one. Even if the number of rows is large depending on the amount of combustion and the amount of powder supplied per unit time, the injection direction as described above may be used in the flame. A spraying burner having a flame hole and a material hole for uniformly dispersing the powder material into the material can also be used.
【００２４】さらに、衝突位置は前述のようにバーナ噴
射面１２に近づける方が良い。火炎孔と材料孔の噴射方
向は、火炎孔列１５、１６の噴射方向をバーナ噴射面１
２と直角になるように火炎孔列１５、１６の各火炎から
引いた延長線方向とし、材料孔列１３の噴射方向をバー
ナ噴射面１２と直角となるように材料孔列１３の各材料
孔から引いた延長線に対して、火炎孔列１５方向に２°
〜１０°の角度に、また、別の火炎孔列１６方向に２°
〜１０°の角度に交互に向くようにし、その時の衝突位
置はバーナ噴射面１２から１０ｍｍ〜５００ｍｍとす
る。Further, it is better to bring the collision position closer to the burner injection surface 12 as described above. The injection direction of the flame holes and the material holes is determined by changing the injection direction of the flame hole rows 15 and 16 to the burner injection surface 1.
The direction of injection of the material hole array 13 is perpendicular to the burner injection surface 12 so that the material hole of the material hole array 13 is perpendicular to the burner injection surface 12. 2 ° in the direction of the flame hole row 15 with respect to the extension line drawn from
At an angle of -10 °, and 2 ° in the direction of another row of flame holes 16
It is directed alternately at an angle of 10 ° to 10 °, and the collision position at that time is 10 mm to 500 mm from the burner injection surface 12.
【００２５】さらに、衝突位置での火炎温度が２０００
℃以上であることが粉末材料の粒子を完全溶融する上で
好ましい。しかし、噴射方向の角度、衝突位置の距離及
び火炎温度の各数値が上記のように得られない場合には
設計上適宜決めれば良い。Further, the flame temperature at the collision position is 2000
It is preferable that the temperature is not less than ° C in order to completely melt the particles of the powder material. However, when the values of the angle of the injection direction, the distance of the collision position, and the flame temperature cannot be obtained as described above, they may be appropriately determined in design.
【００２６】このようにバーナ噴射面１２に近い位置で
噴射された粉末材料と火炎を衝突させて火炎内に粉末材
料の粒子を高濃度で均一に分散させることで火炎の熱エ
ネルギーを高能率で粉末材料の粒子に伝達できるため、
完全溶融した粉末材料の粒子量が増加し、単位当たりの
溶射能力が向上する。As described above, the powder material injected at a position close to the burner injection surface 12 collides with the flame so that the particles of the powder material are uniformly dispersed in the flame at a high concentration, so that the heat energy of the flame can be efficiently transferred. Can be transmitted to the particles of the powder material,
The amount of particles of the powder material completely melted is increased, and the spraying performance per unit is improved.
【００２７】このような本発明の溶射バーナと従来の溶
射バーナとを用いた場合の溶射施工体の比較を行った。
表１の溶射バーナを使用して、表２のように単位時間当
たりの燃焼量、溶射距離、溶射材料を両者とも同一条件
とし、それぞれ単位時間当たりの粉体供給量を同様に変
化させて実施した。A comparison was made between the thermal spraying bodies using the thermal spray burner of the present invention and the conventional thermal spray burner.
Using the spraying burner shown in Table 1, the amount of combustion per unit time, spraying distance, and spraying material were set to the same conditions as shown in Table 2, and the amount of powder supplied per unit time was similarly changed. did.
【００２８】その結果、図６、図７のグラフに示すよう
に、従来の溶射バーナでは単位時間当たりの粉体供給量
が増加すれば、施工体の付着歩留が低下し、施工体の見
掛気孔率が増加するが、本発明の溶射バーナを用いれ
ば、単位時間当たりの粉体供給量を増加したにも拘らず
施工体の付着歩留及び見掛気孔率のいずれも変化しない
結果になり、従来のバーナに比し時間当たりの粉体供給
量を２８％増加できることが確認できた。以上のよう
に、本発明によって単位時間当りの溶射能力の向上が得
られる。As a result, as shown in the graphs of FIGS. 6 and 7, in the conventional thermal spray burner, if the amount of powder supplied per unit time increases, the adhesion yield of the construction body decreases, and the appearance of the construction body is reduced. Although the porosity increases, using the thermal spray burner of the present invention results in no change in the adhesion yield and apparent porosity of the construction body despite the increase in the amount of powder supplied per unit time. Thus, it was confirmed that the powder supply amount per hour can be increased by 28% as compared with the conventional burner. As described above, according to the present invention, the spraying performance per unit time can be improved.
【００２９】｛実施例３｝本発明の第３実施例の外観図
を図３に示す。図３において、火炎及び粉末材料を吐出
する溶射バーナ２１は、バーナ噴射面２２に火炎孔列２
５と別の火炎孔列２６との間に材料孔列２３を配置し、
前記火炎孔列２５、２６の各火炎孔列の噴射方向２７、
２８が材料孔列２３の各材料孔からバーナ噴射面２２に
対し直角となるようにした延長線２９に向くようにし、
かつ、材料孔列２３の相隣る材料孔の噴射方向２４は第
一列目の火炎孔列２５の方向と第二列目の火炎孔列２６
の方向に交互に向くように配列された構造を有してい
る。Embodiment 3 FIG. 3 shows an external view of a third embodiment of the present invention. In FIG. 3, a spray burner 21 for discharging a flame and a powder material has a flame hole array 2 on a burner injection surface 22.
5 and another flame hole row 26, the material hole row 23 is arranged,
Injection direction 27 of each flame hole row of the flame hole rows 25 and 26,
28 is directed from each material hole of the material hole row 23 to an extension line 29 which is perpendicular to the burner injection surface 22,
In addition, the injection direction 24 of the material holes adjacent to the material hole array 23 is the direction of the first flame hole array 25 and the direction of the second flame hole array 26.
Are arranged alternately in the direction of.
【００３０】材料孔列２３の相隣る材料孔の噴射方向２
４が第一列目の火炎孔列２５の方向と第二列目の火炎孔
列２６の方向に交互に向くように配列することで、噴射
された粉末材料は火炎と衝突して火炎内に均一に分散さ
れる。Injection direction 2 of adjacent material holes in material hole row 23
4 are arranged so as to face alternately in the direction of the first row 25 of flame holes and the direction of the second row 26 of flame holes, so that the injected powder material collides with the flame and enters the flame. Dispersed uniformly.
【００３１】火炎は、バーナ噴射面２２に近いほど高温
であるため、この衝突をバーナ噴射面２２に近い位置と
することにより、より大きい熱エネルギーを粉末材料に
伝達することができる。Since the temperature of the flame is higher as the flame is closer to the burner injection surface 22, by setting this collision to a position closer to the burner injection surface 22, more heat energy can be transmitted to the powder material.
【００３２】この場合、バーナより噴射された粉末材料
が火炎内に包含されるように、材料孔列２３の長さは前
記火炎孔列２５、２６の長さより短くすることが好まし
い。また、材料孔列２３の各材料孔は前記火炎孔列２
５、２６の各火炎孔と相対することが好ましい。材料孔
列２３及び火炎孔列２５、２６の列数は必ずしも一列と
する必要はなく、単位時間当たりの燃焼量及び粉体供給
量により多数列となっても前述のような溶射方向として
火炎内に粉末材料を均一に分散させるような火炎孔と材
料孔を構成した溶射バーナとすることもできる。In this case, the length of the material hole array 23 is preferably shorter than the length of the flame hole arrays 25 and 26 so that the powder material injected from the burner is included in the flame. Further, each material hole of the material hole row 23 corresponds to the flame hole row 2.
It is preferable to face each of the flame holes 5 and 26. The number of rows of material holes 23 and the number of rows of flame holes 25 and 26 are not necessarily required to be one. Even if the number of rows is large depending on the amount of combustion and the amount of powder supplied per unit time, the above-described spraying direction in the flame is not considered. A spraying burner having a flame hole and a material hole for uniformly dispersing the powder material into the material can also be used.
【００３３】さらに、衝突位置は前述のようにバーナ噴
射面２２に近づける方が良い。火炎孔と材料孔の噴射方
向は、火炎孔列２５、２６の噴射方向をバーナ噴射面２
２と直角となるように火炎孔列２５、２６の各火炎孔か
ら引いた延長線に対して材料孔列２３方向に２°〜１０
°の角度とし、材料孔列２３の相隣る材料孔の噴射方向
をバーナ噴射面２２と直角となるように材料孔列２３の
各材料孔から引いた延長線に対して、火炎孔列２５方向
に２°〜１０°の角度に、また、別の火炎孔列２６方向
に２°〜１０°の角度に交互に向くようにし、その時の
衝突位置はバーナ噴射面１２から１０ｍｍ〜５００ｍｍ
とする。Further, it is better to bring the collision position closer to the burner injection surface 22 as described above. The spray direction of the flame holes and the material holes is determined by the spray direction of the flame hole rows 25 and 26 in the burner spray surface 2.
2 with respect to an extension line drawn from each of the flame holes of the flame hole rows 25 and 26 so as to be perpendicular to
With respect to an extension line drawn from each material hole of the material hole array 23 so that the injection direction of the material holes adjacent to the material hole array 23 is perpendicular to the burner injection surface 22, the flame hole array 25 In the direction of 2 ° to 10 °, and alternately in the direction of another flame hole row 26 at an angle of 2 ° to 10 °, and the collision position at that time is 10 mm to 500 mm from the burner injection surface 12.
And
【００３４】さらに、衝突位置での火炎温度が２０００
℃以上であることが粉末材料の粒子を完全溶融する上で
好ましい。しかし、噴射方向の角度、衝突位置の距離及
び火炎温度の各数値が上記のように得られない場合には
設計上適宜決めれば良い。Further, the flame temperature at the collision position is 2000
It is preferable that the temperature is not less than ° C in order to completely melt the particles of the powder material. However, when the values of the angle of the injection direction, the distance of the collision position, and the flame temperature cannot be obtained as described above, they may be appropriately determined in design.
【００３５】このようにバーナ噴射面２２に近い位置で
噴射された粉末材料と火炎を衝突させて火炎内に粉末材
料の粒子を高濃度で均一に分散させることで火炎の熱エ
ネルギーを高能率で粉末材料末の粒子に伝達できるた
め、完全溶融した粉末材料の粒子量が増加し、単位当た
りの溶射能力が向上する。As described above, the powder material injected at a position close to the burner injection surface 22 collides with the flame to disperse the particles of the powder material uniformly in the flame at a high concentration, so that the heat energy of the flame can be efficiently transferred. Since the particles can be transmitted to the particles of the powder material powder, the amount of particles of the powder material completely melted increases, and the spraying performance per unit improves.
【００３６】このような本発明の溶射バーナと従来の溶
射バーナとを用いた場合の溶射施工体の比較を行った。
表１の溶射バーナを使用して、表２のように単位時間当
たりの燃焼量、溶射距離、溶射材料を両者とも同一条件
とし、それぞれ単位時間当たりの粉体供給量を同様に変
化させて実施した。A comparison was made between the thermal spraying bodies using the thermal spray burner of the present invention and the conventional thermal spray burner.
Using the spraying burner shown in Table 1, the amount of combustion per unit time, spraying distance, and spraying material were set to the same conditions as shown in Table 2, and the amount of powder supplied per unit time was similarly changed. did.
【００３７】その結果、図８、図９のグラフに示すよう
に、従来の溶射バーナでは単位時間当たりの粉体供給量
は増加すれば、施工体の付着歩留が低下し、施工体の見
掛気孔率が増加するが、本発明の溶射バーナを用いれ
ば、単位時間当たりの粉体供給量を増加したにも拘らず
施工体の付着歩留及び見掛気孔率のいずれも変化しない
結果になり、従来のバーナに比し時間当たりの粉体供給
量を４２％増加できることが確認できた。As a result, as shown in the graphs of FIGS. 8 and 9, in the conventional thermal spray burner, if the amount of powder supplied per unit time increases, the adhesion yield of the construction body decreases, and the appearance of the construction body is reduced. Although the porosity increases, using the thermal spray burner of the present invention results in no change in the adhesion yield and apparent porosity of the construction body despite the increase in the amount of powder supplied per unit time. That is, it was confirmed that the powder supply amount per hour can be increased by 42% as compared with the conventional burner.
【００３８】以上のように、本発明によって単位時間当
りの溶射能力の向上が得られる。なお、第２実施例に比
し第３実施例では火炎と材料の衝突位置をバーナ噴射面
に近づけることができるため溶射能力の向上効果が大き
い。As described above, according to the present invention, the spraying performance per unit time can be improved. In the third embodiment, as compared with the second embodiment, the collision position between the flame and the material can be made closer to the burner injection surface, so that the effect of improving the spraying ability is large.
【００３９】[0039]
【表１】 [Table 1]
【００４０】[0040]
【表２】 [Table 2]
【００４１】[0041]
【発明の効果】本発明により、火炎内に粉末材料を高濃
度で均一分散できるため火炎の熱エネルギーを高能率で
粉末材料の粒子に伝達することができ、完全溶融した粉
末材料の粒子が増加し、単位時間当たりの溶射能力が向
上するものである。According to the present invention, since the powder material can be uniformly dispersed at a high concentration in the flame, the thermal energy of the flame can be transferred to the particles of the powder material with high efficiency, and the particles of the powder material completely melted increase. In addition, the spraying performance per unit time is improved.
【図１】本発明の溶射バーナの第１実施例を示した図
で、（ａ）は断面図、（ｂ）は正面図。FIG. 1 is a view showing a first embodiment of a thermal spray burner according to the present invention, wherein (a) is a cross-sectional view and (b) is a front view.
【図２】本発明の溶射バーナの第２実施例を示した外観
図。FIG. 2 is an external view showing a second embodiment of a thermal spray burner according to the present invention.
【図３】本発明の溶射バーナの第３実施例を示した外観
図。FIG. 3 is an external view showing a third embodiment of a thermal spray burner according to the present invention.
【図４】第１の実施例と従来例の溶射バーナを用いて単
位時間当たりの粉体供給量と付着歩留を示した図。FIG. 4 is a view showing a powder supply amount per unit time and an adhesion yield using a thermal spray burner according to the first embodiment and a conventional example.
【図５】第１の実施例と従来例の溶射バーナを用いて単
位時間当たりの粉体供給量と施工体の見掛気孔率を示し
た図。FIG. 5 is a diagram showing a powder supply amount per unit time and an apparent porosity of a construction body using a sprayed burner according to the first embodiment and a conventional example.
【図６】第２の実施例と従来例の溶射バーナを用いて単
位時間当たりの粉体供給量と付着歩留を示した図。FIG. 6 is a diagram showing a powder supply amount per unit time and an adhesion yield using a thermal spray burner according to the second embodiment and a conventional example.
【図７】第２の実施例と従来例の溶射バーナを用いて単
位時間当たりの粉体供給量と施工体の見掛気孔率を示し
た図。FIG. 7 is a diagram showing a powder supply amount per unit time and an apparent porosity of a construction body using a sprayed burner according to the second embodiment and a conventional example.
【図８】第３の実施例と従来例の溶射バーナを用いて単
位時間当たりの粉体供給量と付着歩留を示した図。FIG. 8 is a diagram showing a powder supply amount per unit time and an adhesion yield using a thermal spray burner according to the third embodiment and a conventional example.
【図９】第３の実施例と従来例の溶射バーナを用いて単
位時間当たりの粉体供給量と施工体の見掛気孔率を示し
た図。FIG. 9 is a diagram showing a powder supply amount per unit time and an apparent porosity of a construction body using a thermal spray burner according to the third embodiment and a conventional example.
【図１０】従来例の溶射バーナを示した図で、（ａ）は
正面図、（ｂ）は（ａ）の断面説明図。10A and 10B are views showing a conventional thermal spray burner, wherein FIG. 10A is a front view, and FIG. 10B is an explanatory sectional view of FIG.
１、１１、２１、３３ 溶射バーナ ４、５、１５、１６、２５、２６、３２ 火炎孔列 ３、１３、２３、３１ 材料孔列 ８、９、２７、２８ 火炎孔の噴射方向 ６、７、１４、２４ 材料孔の噴射方向 ２、１２、２２ バーナ噴射面 １０ 衝突部 ３５ 材料流 ３６ 火炎流 ２９、３４ 延長線 1, 11, 21, 33 Thermal spray burner 4, 5, 15, 16, 25, 26, 32 Flame hole array 3, 13, 23, 31 Material hole array 8, 9, 27, 28 Injection direction of flame hole 6, 7 , 14, 24 Injection direction of material holes 2, 12, 22 Burner injection surface 10 Collision part 35 Material flow 36 Flame flow 29, 34 Extension
Claims (3)
周火炎孔列（４）の間に同心円上に配列した溶射バーナ
（１）において、前記火炎孔列（５）、（４）の各火炎
孔の噴射方向（８）、（９）がバーナ中心方向に向くよ
うにし、かつ、材料孔列（３）の相隣る材料孔の噴射方
向（７）、（６）は外周火炎孔列方向と内周火炎孔列方
向に交互に向くように配列したことを特徴とする溶射バ
ーナ。1. A thermal spray burner (1) in which a row of material holes (3) are arranged concentrically between a row of outer peripheral flame holes (5) and a row of inner peripheral flame holes (4). , (4), the injection directions (8), (9) of the respective flame holes are directed toward the center of the burner, and the injection directions (7), (6) of the adjacent material holes of the material hole row (3). ) Is a thermal spray burner characterized by being arranged alternately in the outer flame hole row direction and the inner flame hole row direction.
火炎孔列（１６）の間に材料孔列（１３）を配列した溶
射バーナ（１１）において、材料孔列（１３）の相隣る
材料孔の噴射方向（１４）が第一列目の火炎孔列（１
５）の方向と第二列目の火炎孔列（１６）の方向に交互
に向くように配列したことを特徴とする溶射バーナ。2. A thermal spray burner (11) having a material hole array (13) arranged between a first flame hole array (15) and a second flame hole array (16). The injection direction (14) of the adjacent material holes in (13) is the first flame hole row (1).
A thermal spray burner characterized by being arranged alternately in the direction of 5) and the direction of the second row of flame holes (16).
火炎孔列（２６）の間に材料孔列（２３）を配列した溶
射バーナ（２１）において、前記火炎孔列（２５）、
（２６）の各火炎孔の噴射方向（２７）、（２８）が材
料孔列（２３）の各材料孔からバーナ噴射面（２２）に
対し直角となるようにした延長線（２９）に向くように
し、かつ、材料孔列（２３）の相隣る材料孔の噴射方向
（２４）は第一列目の火炎孔列（２５）の方向と第二列
目の火炎孔列（２６）の方向に交互に向くように配列し
たことを特徴とする溶射バーナ。3. A thermal spray burner (21) in which a material hole array (23) is arranged between a first flame hole array (25) and a second flame hole array (26). Column (25),
The injection directions (27) and (28) of each flame hole of (26) are directed from the respective material holes of the material hole row (23) to an extension line (29) that is perpendicular to the burner injection surface (22). The injection direction (24) of the material holes adjacent to the material hole array (23) is the same as the direction of the first flame hole array (25) and the direction of the second flame hole array (26). A spray burner characterized by being arranged alternately in the direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5105898A JP2955808B2 (en) | 1993-04-09 | 1993-04-09 | Thermal spray burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5105898A JP2955808B2 (en) | 1993-04-09 | 1993-04-09 | Thermal spray burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06299316A JPH06299316A (en) | 1994-10-25 |
| JP2955808B2 true JP2955808B2 (en) | 1999-10-04 |
Family
ID=14419714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5105898A Expired - Fee Related JP2955808B2 (en) | 1993-04-09 | 1993-04-09 | Thermal spray burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2955808B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012207817A (en) * | 2011-03-29 | 2012-10-25 | Taiyo Nippon Sanso Corp | Combustion burner |
-
1993
- 1993-04-09 JP JP5105898A patent/JP2955808B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012207817A (en) * | 2011-03-29 | 2012-10-25 | Taiyo Nippon Sanso Corp | Combustion burner |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06299316A (en) | 1994-10-25 |
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Legal Events
| 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: 19990525 |
|
| LAPS | Cancellation because of no payment of annual fees |