JPH06293013A - Concrete centrifugal projector - Google Patents
Concrete centrifugal projectorInfo
- Publication number
- JPH06293013A JPH06293013A JP30187992A JP30187992A JPH06293013A JP H06293013 A JPH06293013 A JP H06293013A JP 30187992 A JP30187992 A JP 30187992A JP 30187992 A JP30187992 A JP 30187992A JP H06293013 A JPH06293013 A JP H06293013A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- concrete
- rotor
- concrete centrifugal
- coating layer
- 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
Links
Landscapes
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、円筒内面に側面からコ
ンクリートを供給し、円筒内部に配置したローターを回
転させ、ローターの羽根で円筒の一部に設けた投射口か
らコンクリートを遠心力で放出し、トンネル内面等にコ
ンクリートを塗布する装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention supplies concrete from the side surface to the inner surface of a cylinder, rotates a rotor arranged inside the cylinder, and centrifuges the concrete from a projection port provided in a part of the cylinder by blades of the rotor. A device for discharging and applying concrete to the inner surface of a tunnel or the like.
【０００２】[0002]
【従来の技術】コンクリート遠心投射装置の円筒内面
は、コンクリートとの摩擦により摩耗する。超硬合金で
作れば最も良いが製造が困難であるため、Ｎｉ或はＣｏ
基耐摩耗性合金の溶射材で被覆したり、ＨＩＰ法によ
り、円筒内面にＮｉ合金中に硬質粉末を約１０重量％添
加した被膜を形成したり、硬質粉末をバインダーと混合
して形成したグリーンシートを円筒内面に配置してＮｉ
ろう材を溶浸させた被膜を形成したりすることが行われ
ている。2. Description of the Related Art The inner surface of a cylinder of a concrete centrifugal projection device is worn by friction with concrete. It is best if made of cemented carbide, but it is difficult to manufacture, so Ni or Co
Green formed by coating with a thermal spraying material of base wear-resistant alloy, by HIP method, forming a coating in which hard powder is added to Ni alloy in an amount of about 10% by weight on the inner surface of the cylinder, or by mixing hard powder with a binder. The sheet is placed on the inner surface of the cylinder and Ni
It is performed to form a coating film in which a brazing material is infiltrated.
【０００３】上記の耐摩耗性の溶射被膜は、コンクリー
ト中に含まれる骨材により、摩耗し易く、骨材の衝撃に
より亀裂や剥離が発生し耐久性に乏しく、ＨＩＰ法によ
る被膜は、耐摩耗性が十分でなく、硬質粉末の含有量を
多くすると、ＨＩＰ処理後の冷却時に発生する熱応力に
より被膜に割れを発生し、後工程での機械加工の際に、
残留応力により割れを発生する。グリーンシート法で
は、被膜中に硬質粉末の存在しないろう材のみの相が発
生し、この部分は耐摩耗性に劣るので全体としての硬度
が劣るようになる問題がある。The above-mentioned wear-resistant sprayed coating is apt to wear due to the aggregate contained in the concrete, and the impact of the aggregate causes cracks and peeling, resulting in poor durability. If the content is not sufficient and the hard powder content is high, cracks will occur in the coating due to the thermal stress generated during cooling after HIP treatment, and during machining in the subsequent process,
Cracks occur due to residual stress. The green sheet method has a problem that a phase of only a brazing material in which a hard powder does not exist is generated in a coating film, and this portion is inferior in wear resistance, so that the hardness as a whole is inferior.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、従来よりも
硬質粉末を多量に含有し耐摩耗性に優れ、従来よりも耐
久性を有すると共に、製造の際に割れや、不均一相を有
しない被覆層を円筒内面に有するコンクリート遠心投射
装置を提供することにある。DISCLOSURE OF THE INVENTION The present invention contains a larger amount of hard powder than before, has excellent wear resistance, is more durable than before, and has cracks and non-uniform phases during production. It is an object of the present invention to provide a concrete centrifugal projection device having a coating layer that does not exist on the inner surface of a cylinder.
【０００５】[0005]
【課題を解決するための手段】本発明は、一部に投射口
を有する円筒と、円筒内に配置された羽根を有するロー
ターと、ローターを回転するモーターとを備えたコンク
リート遠心投射装置において、前記の炭素鋼、低合金
鋼、ステンレス鋼の内の一つからなる円筒内面に、Ｎｉ
ろう、Ｆｅろうの内の一つからなるマトリックス中に硬
質粉末６０〜９５重量％を分散含有する焼結体からなる
被覆層が一体に溶着されていることを特徴とするコンク
リート遠心投射装置にある。DISCLOSURE OF THE INVENTION The present invention relates to a concrete centrifugal projection device provided with a cylinder partially having a projection opening, a rotor having blades arranged in the cylinder, and a motor for rotating the rotor, On the inner surface of the cylinder made of one of the above carbon steel, low alloy steel and stainless steel, Ni
In a concrete centrifugal projection apparatus, a coating layer made of a sintered body containing 60 to 95% by weight of hard powder dispersed and dispersed in a matrix made of one of braze and Fe braze. .
【０００６】本発明被覆層にマトリックスとして用いら
れるＮｉろう、Ｆｅろうは、例えば、Ｎｉろうでは、JI
S Ｚ 3265-1976 に規定のようなＮｉろうを用いる。Ｆ
ｅろうでは、米国デロロステライト社の商品名MULTIPAS
S alloy No.92 がある。硬質粉末としては、一般にＷＣ
粉末、ＷＣ−Ｃｏ粉末を用いる。その外、Ｃｒ3Ｃ2、Ｔ
ｉＣ、ＣｒＢ2、ＴｉＢ2などがある。Ni braze and Fe braze used as a matrix in the coating layer of the present invention are, for example, Ni braze, JI
Ni solder as specified in S Z 3265-1976 is used. F
e Deroux, product name MULTIPAS of Deloro Stellite Inc.
There is S alloy No.92. As hard powder, generally WC
Powder and WC-Co powder are used. In addition, Cr 3 C 2 , T
iC, CrB 2 , TiB 2 and the like.
【０００７】[0007]
【作用】上記のＮｉろう、Ｆｅろうは円筒の材料である
炭素鋼、低合金鋼、ステンレス鋼になじみがよく、硬質
粉末との接合性に優れている。このために硬質粉末を従
来よりも多量の６０〜９５重量％混合した合金を形成し
うるものである。硬質粉末が９５重量％を超えると、被
覆層の靭性が低下すると共に、円筒の材料との熱膨張収
縮率が大きくなり過ぎＨＩＰ処理時或はその後の機械加
工時に残留内部応力のため加工割れが発生し、６０重量
％未満では被覆層の硬度が十分でなく耐摩耗性が低下し
てしまう。The Ni braze and Fe braze described above have good compatibility with carbon steel, low alloy steel and stainless steel, which are cylindrical materials, and have excellent bondability with hard powder. Therefore, it is possible to form an alloy in which a large amount of hard powder is mixed in an amount of 60 to 95% by weight as compared with the conventional case. If the hard powder exceeds 95% by weight, the toughness of the coating layer decreases and the thermal expansion / shrinkage ratio with the material of the cylinder becomes too large. If the amount is less than 60% by weight, the hardness of the coating layer is not sufficient and the wear resistance decreases.
【０００８】ＨＩＰ処理により焼結するとき、１０００
ｋｇｆ／ｃｍ2で１時間、Ｎｉろうでは９５０〜１１８
０℃、Ｆｅろうでは１１５０〜１２５０℃で焼結でき、
超硬合金の真空中や、水素気流中での焼結温度である１
３５０〜１６００℃よりも低温度で焼結できる。従っ
て、円筒との接着性がよく、熱応力に由来する亀裂、剥
離の問題がなく、耐摩耗性に優れ、従来よりも耐久性に
優れたコンクリート遠心投射装置の提供が可能となる。When sintered by HIP processing, 1000
1 hour at kgf / cm 2 , 950-118 for Ni wax
0 ° C, Fe solder can be sintered at 1150 to 1250 ° C,
Sintering temperature of cemented carbide in vacuum or in hydrogen flow 1
It can be sintered at a temperature lower than 350 to 1600 ° C. Therefore, it is possible to provide a concrete centrifugal projecting device which has good adhesiveness to a cylinder, has no problem of cracking and peeling due to thermal stress, has excellent wear resistance, and is more durable than conventional ones.
【０００９】[0009]
【実施例】図１は、本発明によるコンクリート遠心投射
装置の側面断面図、図２は正面断面図で、炭素鋼、低合
金鋼、ステンレス鋼のうちの１種からなる円筒１の内面
に、Ｎｉろう、Ｆｅろうの内の一つからなるマトリック
ス中に硬質粉末６０〜９５重量％を分散含有する焼結体
からなる被覆層２が溶着されている。円筒１の一部には
コンクリートを外部に投射するための投射口３が設けて
ある。FIG. 1 is a side sectional view of a concrete centrifugal projecting device according to the present invention, and FIG. 2 is a front sectional view showing the inner surface of a cylinder 1 made of one of carbon steel, low alloy steel and stainless steel. A coating layer 2 made of a sintered body containing 60 to 95% by weight of hard powder dispersed in a matrix made of one of Ni solder and Fe solder is welded. A projection port 3 for projecting concrete to the outside is provided in a part of the cylinder 1.
【００１０】円筒１の一端には円板状の側板４が取り付
けられ、側板４の中央にはコンクリートを内部に投入す
るための開口５が設けてある。円筒１の他端は円板状の
蓋板６で閉じられ、蓋板６の中心の外部にモーター７が
連結してある。円筒１の内部には、ローター１３が配置
されている。A disk-shaped side plate 4 is attached to one end of the cylinder 1, and an opening 5 is provided at the center of the side plate 4 for introducing concrete into the inside. The other end of the cylinder 1 is closed by a disc-shaped cover plate 6, and a motor 7 is connected to the outside of the center of the cover plate 6. A rotor 13 is arranged inside the cylinder 1.
【００１１】ローター１３は、側板４内面に接近して平
行に配置された円板状の支持板９と、蓋板６の内面に接
近して平行に配置された円板状の支持板９と、支持板９
の外周内側に沿い放射状に等角度間隔で二つの支持板９
を連結する複数の羽根１１と、各羽根１１の回転方向前
面に取り付けられた超硬合金の耐摩耗板１２と、蓋板６
側の支持板９をモーター７の回転軸と連結する軸８とか
らなる。又、側板４側の支持板９には開口５と重なる開
口１０が設けてある。The rotor 13 includes a disk-shaped support plate 9 arranged in parallel to the inner surface of the side plate 4, and a disk-shaped support plate 9 arranged in parallel to the inner surface of the lid plate 6. , Support plate 9
Along the inner circumference of the two support plates 9 at equal angular intervals radially
A plurality of blades 11 connecting the blades, a wear-resistant plate 12 made of cemented carbide attached to the front surface of each blade 11 in the rotation direction, and a cover plate 6
The support plate 9 on the side is connected to the rotation shaft of the motor 7. Further, the support plate 9 on the side plate 4 side is provided with an opening 10 overlapping with the opening 5.
【００１２】この装置は、モーター７を回転し、ロータ
ー１３を図２に示す回転方向に回転しつつ、開口５及び
１０を通して内部にコンクリートを投入する。投入され
たコンクリートは円筒１の下部に落下し、回転して来た
羽根１１により跳ね上げられ投射口３から外部に投射さ
れ、トンネル内面等に塗布される。In this apparatus, the motor 7 is rotated and the rotor 13 is rotated in the rotation direction shown in FIG. 2 while pouring concrete into the inside through the openings 5 and 10. The poured concrete falls to the lower part of the cylinder 1, is repelled by the rotating blades 11, is projected to the outside from the projection port 3, and is applied to the inner surface of the tunnel or the like.
【００１３】上記の被覆層２は、円筒１の内面との間
に、金属板で被覆層２よりやや厚い空間を形成し、その
空間にＮｉろうやＦｅろうの粉末に超硬粉末を混合した
混合粉末を充填し、真空に脱気して封じ、ＨＩＰ装置に
入れ、９５０〜１２５０℃で１０００ｋｇｆ／ｃｍ2の
圧力で１時間程度保持するＨＩＰ処理により形成するも
のである。勿論ＨＩＰ処理後、金属板を除去し、仕上げ
加工することはいうまでもない。The coating layer 2 described above forms a space, which is slightly thicker than the coating layer 2, between the inner surface of the cylinder 1 and a metal plate, and Ni powder or Fe solder powder is mixed with superhard powder in the space. The mixed powder is filled, deaerated in a vacuum, sealed, placed in a HIP device, and held by a HIP process at 950 to 1250 ° C. and a pressure of 1000 kgf / cm 2 for about 1 hour. Needless to say, after the HIP treatment, the metal plate is removed and finishing is performed.
【００１４】０.１重量％Ｃ−１６重量％Ｃｒ−２重量
％Ｆｅ−３.５重量％Ｂ−残部ＮｉからなるＮｉろう粉
末２０重量％とＷＣ粉末を８０重量％混合した材料を用
いて、炭素鋼からなる円筒１の内面にＨＩＰ法により被
覆層２を形成した。一方、比較例として、炭素鋼からな
る円筒１の内面に、ＷＣ粉末のグリーシートを配置し、
上記のろう材を２０重量％溶浸して被覆層２を形成し
た。Using a material in which 20% by weight of Ni brazing powder consisting of 0.1% by weight C-16% by weight Cr-2% by weight Fe-3.5% by weight B-balance Ni and 80% by weight of WC powder are used. The coating layer 2 was formed on the inner surface of the cylinder 1 made of carbon steel by the HIP method. On the other hand, as a comparative example, a green sheet of WC powder is arranged on the inner surface of the cylinder 1 made of carbon steel,
A coating layer 2 was formed by infiltrating 20% by weight of the above brazing material.
【００１５】上記の円筒を用いてコンクリート遠心投射
装置を構成し、同一コンクリートを用いて投射実験を行
ったところ、本発明によるものは、比較例の約１０倍の
耐久性を有した。Ｆｅろうと硬質粉末を用いた場合もほ
ぼ同様の結果が得られ、硬質粉末の含有量により、従来
の装置の４〜１１倍の耐久性が得られることが分かっ
た。When a concrete centrifugal projecting device was constructed by using the above-mentioned cylinder and a projecting experiment was carried out using the same concrete, the one according to the present invention had about 10 times the durability of the comparative example. Almost the same results were obtained when Fe braze and hard powder were used, and it was found that the content of the hard powder provides 4 to 11 times the durability of the conventional device.
【００１６】[0016]
【発明の効果】本発明によれば、耐摩耗性に優れ、従来
よりも耐久性を有すると共に、製造の際に割れや、不均
一相を有しない被覆層を円筒内面に有するコンクリート
遠心投射装置を提供することができる。According to the present invention, a concrete centrifugal projecting apparatus having a coating layer on the inner surface of a cylinder, which has excellent wear resistance and durability as compared with the prior art, and which does not have cracks or non-uniform phases during manufacturing. Can be provided.
【図１】コンクリート遠心投射装置の側面断面図であ
る。FIG. 1 is a side sectional view of a concrete centrifugal projection device.
【図２】図１の正面断面図である。FIG. 2 is a front sectional view of FIG.
１ 円筒 ２ 被覆層 ３ 投射口 ４ 側板 ５ 開口 ６ 蓋板 ７ モーター ８ 軸 ９ 支持板 １０ 開口 １１ 羽根 １２ 耐摩耗板 １３ ローター DESCRIPTION OF SYMBOLS 1 Cylinder 2 Cover layer 3 Projection port 4 Side plate 5 Opening 6 Lid plate 7 Motor 8 Shaft 9 Support plate 10 Opening 11 Blade 12 Abrasion resistant plate 13 Rotor
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成５年３月１８日[Submission date] March 18, 1993
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】図面[Document name to be corrected] Drawing
【補正対象項目名】全図[Correction target item name] All drawings
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【図１】 [Figure 1]
【図２】 [Fig. 2]
フロントページの続き (72)発明者 魚谷 禮保 滋賀県甲賀郡水口町貴生川436の２番地 (72)発明者 長谷川 数彦 兵庫県姫路市北平野６丁目８の23番地 (72)発明者 兼平 孝徳 東京都港区赤坂四丁目９番９号 日本国土 開発株式会社内 (72)発明者 岡本 恭房 神奈川県海老名市柏ケ谷967−１−508Continuation of the front page (72) Inventor Reiho Uotani, 2nd address, 436 Kiyokawa, Mizuguchi-cho, Koga-gun, Shiga (72) Inventor, Kazuhiko Hasegawa 6-23, Kitahirano, Himeji-shi, Hyogo (72) Inventor, Takanori Kanehira 4-9-9 Akasaka, Minato-ku, Tokyo Within Japan Land Development Co., Ltd. (72) Inventor Kyofusa Okamoto 967-508 Kashiwagaya, Ebina City, Kanagawa Prefecture
Claims (1)
配置された羽根を有するローターと、ローターを回転す
るモーターとを備えたコンクリート遠心投射装置におい
て、前記の炭素鋼、低合金鋼、ステンレス鋼の内の一つ
からなる円筒内面に、Ｎｉろう、Ｆｅろうの内の一つか
らなるマトリックス中に硬質粉末６０〜９５重量％を分
散含有する焼結体からなる被覆層が一体に溶着されてい
ることを特徴とするコンクリート遠心投射装置。1. A concrete centrifugal projection device comprising a cylinder partially having a projection opening, a rotor having blades arranged in the cylinder, and a motor for rotating the rotor, wherein the carbon steel or the low alloy steel is used. , A coating layer made of a sintered body containing 60 to 95% by weight of a hard powder dispersed in a matrix made of one of Ni braze and Fe braze is integrally formed on the inner surface of a cylinder made of one of stainless steel. Concrete centrifugal projection device characterized by being welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30187992A JPH06293013A (en) | 1992-10-14 | 1992-10-14 | Concrete centrifugal projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30187992A JPH06293013A (en) | 1992-10-14 | 1992-10-14 | Concrete centrifugal projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06293013A true JPH06293013A (en) | 1994-10-21 |
Family
ID=17902245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30187992A Pending JPH06293013A (en) | 1992-10-14 | 1992-10-14 | Concrete centrifugal projector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06293013A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000266055A (en) * | 1999-03-18 | 2000-09-26 | Kinzoku Giken Kk | Corrosion- and abrasion-resistant sliding member and manufacturing of the same |
| CN102294735A (en) * | 2010-06-24 | 2011-12-28 | 湖南华廷筑邦建材有限公司 | Slurry-rotating coating forming method of short fiber water slurry |
| CN102294731A (en) * | 2010-06-24 | 2011-12-28 | 湖南华廷筑邦建材有限公司 | Gypsum water slurry transfer coating forming method |
-
1992
- 1992-10-14 JP JP30187992A patent/JPH06293013A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000266055A (en) * | 1999-03-18 | 2000-09-26 | Kinzoku Giken Kk | Corrosion- and abrasion-resistant sliding member and manufacturing of the same |
| CN102294735A (en) * | 2010-06-24 | 2011-12-28 | 湖南华廷筑邦建材有限公司 | Slurry-rotating coating forming method of short fiber water slurry |
| CN102294731A (en) * | 2010-06-24 | 2011-12-28 | 湖南华廷筑邦建材有限公司 | Gypsum water slurry transfer coating forming method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR950006398B1 (en) | Method for depositing a layer of abrasive material on a substrate | |
| US4274769A (en) | Impregnated diamond drill bit construction | |
| US4023249A (en) | Method of manufacture of cooled turbine or compressor buckets | |
| JP3832596B2 (en) | Multilayer metal-coated diamond abrasive with electrolessly deposited metal | |
| JP3886394B2 (en) | Covering material with corrosion resistance and wear resistance | |
| JPH084920B2 (en) | Rotating body for molten metal | |
| JP2000225506A (en) | Cutting insert and manufacture thereof | |
| GB2125119A (en) | Abrasive/abradable gas path seal system | |
| GB2053269A (en) | Wear resistant composite material method for its production and use of the composite material | |
| JPH06293013A (en) | Concrete centrifugal projector | |
| US10578123B2 (en) | Composite suction liners and applications thereof | |
| JPS6123805A (en) | Intake port lining of fluid machine | |
| JPS58157944A (en) | Compound cylinder and casted alloy therefor | |
| JPS5992038A (en) | Crushing ring | |
| JPS54145318A (en) | Low alloy steel of high toughness | |
| JP2007050359A (en) | Briquet roll, its manufacturing method and briquetting machine | |
| JPS58177238A (en) | Manufacture of edged tool | |
| JPH1034311A (en) | Member for molten metal and manufacture thereof | |
| JP2004010975A (en) | Method for selecting material of film, and film | |
| JPH01169099A (en) | Casing for centrifugal projector | |
| JP2883055B2 (en) | Insertion bonding method between hard alloy and cast iron material and heat treatment method thereof | |
| US3296746A (en) | Particle throwing apparatus | |
| JPS58199804A (en) | Formation of abrasion resistant coating layer | |
| Kong et al. | Densification of WC-TiC compound with nickel as binding metal | |
| Klimenko et al. | The Texture and Properties of Hard Metal Coatings on Chromium Carbide With a Nickel--Phosphorus Binder |