JPS6345597A - Centrifugal thin-film drier - Google Patents
Centrifugal thin-film drierInfo
- Publication number
- JPS6345597A JPS6345597A JP18847886A JP18847886A JPS6345597A JP S6345597 A JPS6345597 A JP S6345597A JP 18847886 A JP18847886 A JP 18847886A JP 18847886 A JP18847886 A JP 18847886A JP S6345597 A JPS6345597 A JP S6345597A
- Authority
- JP
- Japan
- Prior art keywords
- blade
- flat plate
- wear
- thin film
- cylindrical body
- 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.)
- Granted
Links
- 239000010409 thin film Substances 0.000 title claims description 23
- 239000000463 material Substances 0.000 claims description 46
- 239000007788 liquid Substances 0.000 claims description 18
- 239000002699 waste material Substances 0.000 claims description 15
- 238000009792 diffusion process Methods 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 229910000963 austenitic stainless steel Inorganic materials 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 4
- 239000000941 radioactive substance Substances 0.000 claims description 4
- 239000002901 radioactive waste Substances 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims 2
- 229910052759 nickel Inorganic materials 0.000 claims 2
- 229910052748 manganese Inorganic materials 0.000 claims 1
- 229910052721 tungsten Inorganic materials 0.000 claims 1
- 238000003466 welding Methods 0.000 description 13
- 239000002925 low-level radioactive waste Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000005219 brazing Methods 0.000 description 3
- 238000010790 dilution Methods 0.000 description 3
- 239000012895 dilution Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910001080 W alloy Inorganic materials 0.000 description 2
- 239000010953 base metal Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004881 precipitation hardening Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000684 Cobalt-chrome Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000010952 cobalt-chrome Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は低レベル放射性廃棄物減容処理プラントの遠心
薄膜乾燥機に係り、特に耐摩耗性に優れたブレードを備
えた遠心薄膜乾燥機に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a centrifugal thin film dryer for a low-level radioactive waste volume reduction treatment plant, and particularly relates to a centrifugal thin film dryer equipped with blades having excellent wear resistance. .
遠心薄膜乾燥機用ブレード材は特開昭５６−１１４８０
０に記載のように、Ｃｒ２５〜３３％、Ｗ３〜１５．５
％、ｃｏ、５〜３％、Ｆａ３％以下、残部Ｃｏからなる
単−の耐摩耗材で構成されるがあるいはブレードの本体
用材料に耐摩耗材を溶着されて複合化さ九たものであり
、耐摩耗材はＣｏ Ｃｒ Ｗ合金とされていた。Blade material for centrifugal thin film dryer is disclosed in Japanese Patent Application Laid-Open No. 56-11480.
As described in 0, Cr25-33%, W3-15.5
%, Co, 5 to 3%, Fa 3% or less, and the balance is Co. It is composed of a single wear-resistant material, or it can be made into a composite material by welding a wear-resistant material to the material for the main body of the blade. The wear material was a CoCrW alloy.
上記従来技術のブレードにおいて、単一のＣ３−Ｃｒ−
Ｗ合金で製造したブレードは、硬くて脆いので破損し易
く、しかも加工するのが困難である。次にＣｏ Ｃｒ
Ｗ合金の溶着には肉感アーク溶接を適用できるが、
溶接施工上の問題としては溶接割れがあり、肉盛厚さは
３層程度までが限界でこれ以上厚くできない。さらに、
ブレード毎に１枚ずつ溶接しなければならないのでブレ
ードは一品ずつ製造する必要がある。溶接後ブレードの
形状制御の問題として、溶接で発生する形状不整を溶接
ビード表面の凹凸があり、機械加工で摺動部を仕上げな
ければならないが、硬いので加工困難である。次に摺動
部の硬さの制御上の問題として、割れ防止上の観点から
ビッカース硬さＢ７が５００以下の耐摩耗材しが溶着で
きず、さらに母材による稀釈のため、溶接境界部では硬
さが本来の耐摩耗材より低くなる。前者の場合には単一
材で構成されているので、遠心力に対するブレードの押
付力が小さく、また前述の肉盛材においても肉感部を厚
くできないので、同様に遠心力による廃液の薄膜化がで
きない。In the above prior art blade, a single C3-Cr-
Blades made of W alloy are hard and brittle, easily damaged, and difficult to machine. Next, CoCr
Although sensual arc welding can be applied to welding W alloy,
Problems in welding work include weld cracking, and the maximum overlay thickness is about three layers, and it cannot be made thicker than this. moreover,
Since each blade must be welded one by one, each blade must be manufactured one by one. One of the problems with controlling the shape of the blade after welding is that the irregular shape that occurs during welding is due to the irregularities on the surface of the weld bead, and the sliding part must be finished by machining, but it is difficult to process because it is hard. Next, as a problem in controlling the hardness of sliding parts, from the viewpoint of preventing cracking, wear-resistant materials with a Vickers hardness of B7 of 500 or less cannot be welded, and furthermore, due to dilution by the base metal, the welding boundary becomes hard. The wear resistance becomes lower than that of the original wear-resistant material. In the former case, since it is made of a single material, the pressing force of the blade against centrifugal force is small, and even with the above-mentioned overlay material, it is not possible to thicken the fleshy part, so it is also possible to thin the waste liquid due to centrifugal force. Can not.
本発明の目的は摺動部を構成する耐摩耗材の厚さと硬さ
を従来より大幅に厚くかつ硬くすることができ、しかも
形状制御の容易なブレードを備えることができ、より薄
膜化できる遠心薄膜乾燥機を提供するにある。The purpose of the present invention is to provide a centrifugal thin film that can make the thickness and hardness of the wear-resistant material that constitutes the sliding part significantly thicker and harder than conventional ones, and that can also be equipped with blades whose shape can be easily controlled. There is a dryer provided.
ｃ問題点を解決するための手段〕
本発明は円筒体と、該円筒体を加熱する手段と、円筒体
内面を摺動しながら高速回転するブレードとを有し、前
記円筒体内に放射性物質を含む廃液を流入し前記ブレー
ドと円筒体内面との間に前記放射性廃液の薄膜を形成さ
せ乾燥させて前記放射性物質を粉体とする遠心薄膜乾燥
装置において、前記ブレードは前記円筒体内面に摺動す
る耐摩耗性平板部材と該耐摩耗性平板部材を支持する支
持平板部材とからなり、前記耐摩耗性平板部材は支持部
材より大きい比重を有し、かつブレード平板面の面積比
の１０〜３０％の平面部を有し、耐摩耗性平板部と支持
平板部材とが拡散接合されていることを特徴とする。Means for Solving Problem c] The present invention includes a cylindrical body, a means for heating the cylindrical body, and a blade that rotates at high speed while sliding on the inner surface of the cylindrical body, and the present invention includes a cylindrical body, a means for heating the cylindrical body, and a blade that rotates at high speed while sliding on the inner surface of the cylindrical body. In the centrifugal thin film drying apparatus, the blade slides on the inner surface of the cylindrical body, in which a waste liquid containing the radioactive substance flows in, a thin film of the radioactive waste liquid is formed between the blade and the inner surface of the cylindrical body, and the thin film of the radioactive waste liquid is dried to powder the radioactive substance. The wear-resistant flat plate member has a specific gravity larger than that of the supporting member, and has a specific gravity of 10 to 30 of the area ratio of the blade flat plate surface. % flat portion, and is characterized in that the wear-resistant flat plate portion and the supporting flat plate member are diffusion bonded.
前記支持部材が０．０３ 重量％以下のオーステナイト
系ステンレス鋼及び前記耐摩耗性部材が重量でＣ０，５
〜２％、Ｃｒ２Ｏ〜３０％及びＷ２〜１０％を含むＣｏ
基鋳造合金が好ましい。The supporting member is made of austenitic stainless steel of 0.03% by weight or less, and the wear-resistant member is made of C0.5 by weight.
Co containing ~2%, Cr2O ~30% and W2 ~10%
Base casting alloys are preferred.
本発明は、ブレード本体にＣｏ基合金よりなる耐摩耗材
を拡散接合して摺動部材を形成したブレードとすること
、特に板状のブレード本体用材料の表面に板状の耐摩耗
材の表面を重ねて拡散接合し、この接合材よりブレード
を構成する短冊を複数個切出した後ブレード支持部材に
溶接することによって製造することが好ましい。The present invention provides a blade in which a sliding member is formed by diffusion bonding a wear-resistant material made of a Co-based alloy to a blade body, and in particular, the surface of a plate-shaped wear-resistant material is overlapped on the surface of a plate-shaped blade body material. It is preferable to manufacture the blade by diffusion bonding, cutting out a plurality of strips constituting the blade from this bonding material, and welding the blades to the blade support member.
前記オーステナイト系ステンレス鋼は重量でＣｏ０．３
％以下、Ｓｒ１％以下、Ｍｎ０．５％以下、Ｃｒ１５〜
２０％、ＮｔｌＯ−１５％、Ｍｏ １〜３％及び残部Ｆ
ｅからなり熱間塑性加工材が好ましい、特に、廃液は腐
食性を有するので、ＳＣＣの点からＣ量を低めたもので
なければならない。Ｃ量は０．０１〜０．０２５％が好
ましい。The austenitic stainless steel has Co0.3 by weight.
% or less, Sr1% or less, Mn0.5% or less, Cr15~
20%, NtlO-15%, Mo 1-3% and balance F
It is preferable to use a hot plastic processed material consisting of E. In particular, since the waste liquid is corrosive, it must have a low C content from the viewpoint of SCC. The amount of C is preferably 0.01 to 0.025%.
前記支持部材と耐摩耗部材とは重量で、Ｓ’ｉ ２〜６
％、Ｂ１．５〜５％及びＣｏ３０％以下を含むＮｉ基合
金の薄層を介し拡散接合することが好ましい。The weight of the support member and the wear-resistant member is S'i 2 to 6.
%, B 1.5-5%, and Co 30% or less.
本発明のブレードは支持部材と耐摩耗部材とからなる平
板であり、支持平板部材はブツシュに接合されているも
のが好ましい、ブツシュはロータに取付けられるビン支
持部とアームとによって構成され、ブレードの上部と下
部に設けられるのが好ましい。The blade of the present invention is a flat plate consisting of a support member and a wear-resistant member, and it is preferable that the support flat plate member is joined to a bushing. Preferably, they are provided at the top and bottom.
本発明のブレードにおいては、耐摩耗材は拡散接合でブ
レード本体に接合され、接合面はどの部分も同時に接合
され、しかも耐摩耗材を溶融する必要がないので、接合
に伴う割れと形状不整を容易に防止でき、耐摩耗材の厚
さは任意に設定でき、耐摩耗材の硬さが母材による稀釈
等の理由で低下することなく、かつ形状制御も容易とな
る。さらに、本発明は、複数個のブレードを容易に製造
することが可能である。In the blade of the present invention, the wear-resistant material is joined to the blade body by diffusion bonding, and all parts of the joint surfaces are joined at the same time, and there is no need to melt the wear-resistant material, so cracks and irregular shapes caused by joining can be easily prevented. The thickness of the wear-resistant material can be set arbitrarily, the hardness of the wear-resistant material does not decrease due to dilution with the base material, and the shape can be easily controlled. Furthermore, the present invention allows for easy manufacture of multiple blades.
以上の構成により、ブレード先端部に支持部材より比重
の大きい材料を用いるとともに十分な重量を有するよう
に構成することができるのでより小さい回転数でもより
廃液の薄膜化ができ、乾燥効率を高めることができる。With the above configuration, the tip of the blade can be made of a material with a higher specific gravity than the support member and can be constructed to have sufficient weight, so even at a lower rotation speed, the waste liquid can be made into a thinner film and the drying efficiency can be increased. Can be done.
尚、先端部を支持部より断面形状を大きくすることによ
りより遠心力を大きくすることができ、好ましい。Incidentally, it is preferable to make the cross-sectional shape of the tip part larger than that of the support part, because it is possible to increase the centrifugal force.
第１図は発明のブレードを適用した低レベル放射性廃棄
物減容処理プラントの遠心薄膜乾燥機を示す。第２図は
同機の上面図である。FIG. 1 shows a centrifugal thin film dryer for a low-level radioactive waste volume reduction treatment plant to which the blade of the invention is applied. Figure 2 is a top view of the aircraft.
遠心薄膜乾燥機はスラリー状の低レベル放射性廃棄物を
分離乾燥する乾燥機で、−例として、装置の外径は１．
３ ｍ、高さ１０ｍを有する。円筒体伝熱胴５の内部に
この内壁面６と摺動しながら回転する複数個のブレード
８をもつ主軸７があり、この主軸７は上部軸受１０と下
部軸受９で支持されベルト車１１で外部より駆動される
。そのベルト車１１の回転数は約２０ＣｒＰ、である、
各ブレード８は矩形状羽根で上下をピン１３で支持され
ており、遠心力により円筒体伝熱胴５の内壁面６に押つ
けられて摺動しながら回転する。乾燥すべき廃液はポン
プにより機内入口１から供給され、主軸７と共に回転し
て円周方向に均一に分散されながら自重で流下する。流
下した廃液はブレード８により前記内壁面６に押し広げ
られ薄膜となる。A centrifugal thin film dryer is a dryer that separates and dries slurry-like low-level radioactive waste, - for example, the outer diameter of the device is 1.
3 m long and 10 m high. Inside the cylindrical heat transfer shell 5, there is a main shaft 7 having a plurality of blades 8 that rotate while sliding on the inner wall surface 6. This main shaft 7 is supported by an upper bearing 10 and a lower bearing 9, and is supported by a belt pulley 11. Driven from outside. The rotation speed of the belt pulley 11 is approximately 20CrP.
Each blade 8 is a rectangular blade supported by pins 13 at the top and bottom, and is pressed against the inner wall surface 6 of the cylindrical heat transfer cylinder 5 by centrifugal force and rotates while sliding. The waste liquid to be dried is supplied from the machine inlet 1 by a pump, rotates together with the main shaft 7, and flows down under its own weight while being uniformly distributed in the circumferential direction. The flowing waste liquid is spread by the blade 8 on the inner wall surface 6 to form a thin film.
薄膜となった廃液は約２００℃の加熱蒸気人口３より流
入する加熱蒸気で加熱された前記内壁面６で加熱され、
その水分を蒸発しながら流下する。The waste liquid that has become a thin film is heated on the inner wall surface 6 heated by the heated steam flowing in from the heated steam population 3 of about 200°C,
The water evaporates as it flows down.
従って、廃液は下方に進むにつれて濃縮されるためペー
スト状となり最終的に粉体状に乾燥される。Therefore, as the waste liquid moves downward, it becomes concentrated, becomes a paste, and is finally dried into a powder.
ブレード８は廃液を円筒体伝熱！ｌｉ５の内壁面６に薄
膜状に押し広げて乾燥効率を高めるばかりでなく、乾燥
の進行した廃液をかき落して下方へ流下させるのを促進
するような機能をも果たす。上述のように廃液が乾燥さ
れてできた粉体は下部の粉体取出口２より流下すること
により取り出される。Blade 8 transfers heat to the waste liquid through the cylindrical body! It not only increases the drying efficiency by spreading it into a thin film on the inner wall surface 6 of the li 5, but also has the function of scraping off the dried waste liquid and promoting its flow downward. As described above, the powder produced by drying the waste liquid is extracted by flowing down from the powder outlet 2 at the bottom.
また、廃液中の蒸発した水分は気体出口１２より外部に
廃山される。第２図は前記遠心薄膜乾燥機の上面図であ
る。主軸７とサポートリング１４はサポートアーム１５
によって結合されており主軸７の回転はサポートアーム
１５．サポートリング１５及び各ピン１３を介して各ブ
レード８に伝達される。Further, the evaporated moisture in the waste liquid is discharged to the outside through the gas outlet 12. FIG. 2 is a top view of the centrifugal thin film dryer. The main shaft 7 and the support ring 14 are connected to the support arm 15
The rotation of the main shaft 7 is controlled by the support arm 15. It is transmitted to each blade 8 via the support ring 15 and each pin 13.
第３図は本発明のブレードの斜視図である。FIG. 3 is a perspective view of the blade of the present invention.
本実施例のブレードはブレード本体用材料１７に摺動部
材２２として耐摩耗材を接合面１８において拡散接合し
たものである。なお、第２図のサポートリング１５とピ
ン１３で結合すべきブシュ２０は接合部２１でブレード
本体用材料１７とアーク溶接した。The blade of this embodiment is made by diffusion bonding a wear-resistant material as a sliding member 22 to the blade body material 17 at the bonding surface 18. Note that the bushing 20 to be connected to the support ring 15 and the pin 13 in FIG. 2 was arc welded to the blade body material 17 at the joint 21.
以下、本実施例の拡散接合について説明する。Diffusion bonding of this example will be explained below.
第１表は本発明で使用した材料の化学組織を示す。Table 1 shows the chemical structure of the materials used in the present invention.
ブレード本体用材料１７は圧延材のＪＩＳ ５ＵＳ３
１６Ｌとし、重量％でＣｏ０．２６、ＳＩｏ、７、Ｍｎ
０．１５．ＰＯ，０３３、Ｎｔ１２．６、Ｃｒ１７，０
、Ｍｏ２．２３、残Ｆｅの化学組成を有するものを適用
した。摺動部材２２は重量％でＣ０，９２、Ｓ１０．６
、Ｍｎ０．５．Ｐｏ、０４、Ｎｉ２．ＯｌＣｒ２６，５
、Ｗ３．５、残ＣＯの化学組成を有する耐摩耗材で鋳造
品とした。また比較材として耐摩耗と同じ組成の溶接棒
を使用した。拡散接合ではＣ８２０，０、Ｓ１４．０１
Ｂ３．Ｏ，残Ｎ、の組成を有する板厚５０μｍの非晶質
ろう材を使用した。ブレード本体用材料の寸法は長さ３
００１ｍ、幅４０ｍｍ及び厚さ５１１１１とし、摺動部
材の寸法は長さ３００ｍｍ幅２０ｍ及び厚さ５＋ｍ＋と
し、各村の接合面は機械加工により表面の凹凸の差で表
わされる表面粗さを１０〜６μ、をした、拡散接合はブ
レード本体用材料１７を摺動部材の間に非晶質ろう材を
はさんで接合面１８を形成し、真空中で１０−’ トル
で０．５ｋｇ ５ ／ ｍ ｒｒ？の加圧を負荷した状
態で１１３０ｍ温度で１時間加熱した後Ａ、ガスを供給
してＡｒガス雰囲中で室温まで冷却し、さらに、Ａｒガ
ス雰囲中で無負荷のまま再度１１００℃の温度で２０時
間拡散熱処理して実施した。析出硬化形の耐摩耗材を使
用する時は、拡散熱処理後に析出硬化処理を行なうと硬
化がある。The material 17 for the blade body is rolled material JIS 5US3
16L, Co0.26, SIo, 7, Mn in weight%
0.15. PO,033, Nt12.6, Cr17,0
, Mo2.23, and the remaining Fe. The sliding member 22 has a weight percentage of C0.92 and S10.6.
, Mn0.5. Po, 04, Ni2. OlCr26,5
, W3.5, and a wear-resistant material having a chemical composition of residual CO. In addition, a welding rod with the same composition as the wear-resistant one was used as a comparison material. Diffusion bonding: C820.0, S14.01
B3. A 50 μm thick amorphous brazing filler metal having a composition of O and residual N was used. The dimensions of the material for the blade body are length 3
001m, width 40mm, and thickness 51111, the dimensions of the sliding member are length 300mm, width 20m, and thickness 5+m+, and the joint surfaces of each village are machined to have a surface roughness of 10 to 10, which is expressed by the difference in surface unevenness. 6μ, diffusion bonding was performed by sandwiching the blade body material 17 with an amorphous brazing filler metal between sliding members to form a bonding surface 18, and bonding the blade body material 17 to 0.5kg 5/m at 10-' Torr in vacuum. rr? After heating at a temperature of 1130 m for 1 hour with a pressurized load of A, gas was supplied and cooled to room temperature in an Ar gas atmosphere. The diffusion heat treatment was carried out at a temperature of 20 hours. When using a precipitation hardening type wear resistant material, hardening occurs if precipitation hardening treatment is performed after diffusion heat treatment.
第４図は本実施例のブレードにおける接合部の組織を示
す。凝固組織は鋳造時に生じたものである。拡散接合に
よっても接合面には空胴及び欠陥の存在は認められず、
接合状態は良好である。また、接合及び熱処理による変
形も認められなかった。・第５図に接合部の硬さ分布を
示す。比較のために耐摩耗材を肉盛溶接したブレードに
おける溶接境界部の硬さ分布の一例を示す。５ＵＳ３１
６Ｌ材の硬さはＨＵ１７０〜１８０程度である。従来の
肉盛溶接法によって接合された耐摩耗材の場合は溶接境
界部より約３Ｔｍの範囲において本来の硬さが得られて
いない。これは溶接による母材による稀釈のためである
。一方、拡散接合の場合は接合境界部より均一の硬さが
得られており、肉盛溶接法よりのものより優れているこ
とがわかる。FIG. 4 shows the structure of the joint in the blade of this example. The solidified structure was generated during casting. Even after diffusion bonding, no cavities or defects were observed on the bonded surface.
The bonding condition is good. Further, no deformation due to bonding or heat treatment was observed.・Figure 5 shows the hardness distribution of the joint. For comparison, an example of the hardness distribution at the weld boundary of a blade welded with wear-resistant material is shown. 5US31
The hardness of the 6L material is about HU170 to 180. In the case of wear-resistant materials joined by conventional overlay welding, the original hardness cannot be obtained within a range of about 3 Tm from the weld boundary. This is due to dilution by the base metal due to welding. On the other hand, in the case of diffusion bonding, uniform hardness was obtained from the bond boundary, which shows that it is superior to the overlay welding method.
第６図は前述のブレードの実際の製造方法を示す斜視図
である。ブレード本体用材料２２は長さ３００Ｉ、幅２
００＋＋ｏ及び厚さ４０１１１１１１の板材、摺動部材
１７は長さ３００＋＋ｍ、幅２００ｎｍ及び厚さ２０ｍ
の板材とし、間に前述の非晶質ろう材を介在させて両部
材の表面を重ねた状態で、拡散接合した。接合後、接合
面１８に垂直に切断２３して。FIG. 6 is a perspective view showing an actual method of manufacturing the blade described above. The blade body material 22 has a length of 300I and a width of 2
The sliding member 17, which is a plate material of 00++o and thickness 40111111, has a length of 300++m, a width of 200nm, and a thickness of 20m.
The above-mentioned amorphous brazing filler metal was interposed between the two plates, and the surfaces of both members were overlapped, and diffusion bonding was carried out. After bonding, cut 23 perpendicular to the bonding surface 18.
幅５ｏｍの短冊を３５枚切り出し、それぞれをブツシュ
２０と接合部２１でブレード本体用材料１７とアーク溶
接したものである。Thirty-five strips each having a width of 5 om are cut out, and each strip is arc welded to the blade body material 17 at the bush 20 and joint 21.
本発明によればブレード本体用材料に接合すべき摺動部
材に硬く厚い耐摩耗材を適用できるので廃液のより薄膜
化ができ、乾燥効率の高い遠心薄膜乾燥機が得られ、更
にブレードの寿命が著しく向上する効果があり、またブ
レード本体用材料と摺動部材を広い面に渡って接合する
ことができるので、ブレード製造のための接合作業工数
が著しく減少する効果が得られる。According to the present invention, a hard and thick wear-resistant material can be applied to the sliding member to be bonded to the material for the blade body, making it possible to make the waste liquid into a thinner film, providing a centrifugal thin film dryer with high drying efficiency, and further extending the life of the blade. Moreover, since the material for the blade body and the sliding member can be joined over a wide area, the number of joining work steps for manufacturing the blade can be significantly reduced.
第１図は本発明のブレードを使用する遠心薄膜乾燥機の
構造を示す断面図、第２図は遠心薄膜乾燥機上面図、第
３図は本発明のブレードの斜視図、第４図は本発明のブ
レードの金属組織を示す顕微鏡写真、第５図は本発明及
び従来技術の肉感溶接によって製造したブレードの各接
合部の硬さ分布を示す線図、第６図は本発明の製造方法
を説明する斜視図である。
１・・・低レベル放射性廃棄物及び廃液入口、２・・・
濃縮廃棄物粉体出口、３・・・円筒体加熱用蒸気入口、
４・・・円筒体加熱用蒸気出口、５・・・円筒体内壁面
、６・・・円筒体内壁面、７・・・主軸、８・・・ブレ
ード、９・・・下部軸受け、１０・・・上部軸受け、１
１・・・ベルト車、１２・・・気体出口、１３・・・ピ
ン、１４・・・サポートリング、１５・・・サポートア
ム、１６・・・ブレードの回転方向、１７・・・ブレー
ド本体支持部材、１８・・・ブレード本体用材と摺動部
の接合面、１９・・・ブレードの摺動部、２０・・・ブ
ツシュ、２１・・・ブレード本体用材とブツシュの結合
部、２２・・・耐摩耗材、２３・・・切断位置。Fig. 1 is a sectional view showing the structure of a centrifugal thin film dryer using the blade of the present invention, Fig. 2 is a top view of the centrifugal thin film dryer, Fig. 3 is a perspective view of the blade of the present invention, and Fig. 4 is a main view of the centrifugal thin film dryer. A micrograph showing the metallographic structure of the blade of the invention, FIG. 5 is a diagram showing the hardness distribution of each joint of the blade manufactured by sensuous welding of the invention and the prior art, and FIG. 6 shows the manufacturing method of the invention. FIG. 2 is a perspective view for explanation. 1...Low level radioactive waste and waste liquid inlet, 2...
Concentrated waste powder outlet, 3... steam inlet for heating the cylindrical body,
4... Steam outlet for heating the cylindrical body, 5... Wall surface of the cylindrical body, 6... Wall surface of the cylindrical body, 7... Main shaft, 8... Blade, 9... Lower bearing, 10... Upper bearing, 1
DESCRIPTION OF SYMBOLS 1...Belt wheel, 12...Gas outlet, 13...Pin, 14...Support ring, 15...Support arm, 16...Blade rotation direction, 17...Blade main body support Member, 18... Joint surface of blade body material and sliding part, 19... Sliding part of blade, 20... Bushing, 21... Joining part of blade body material and bushing, 22... Wear-resistant material, 23... Cutting position.
Claims (1)
を摺動しながら高速回転するブレードとを有し、前記円
筒体内に放射性物質を含む廃液を流入し前記ブレードと
円筒体内面との間に前記放射性廃液の薄膜を形成させ乾
燥させて前記放射性物質を粉体とする遠心薄膜乾燥装置
において、前記ブレードは前記円筒体内面に摺動する耐
摩耗性平板部材と該耐摩耗性平板部材を支持する支持平
板部材とからなり、前記耐摩耗性平板部材は前記支持平
板部材より比重が大きく、かつ前記ブレード平板面の面
積比の１０〜３０％を有し、前記耐摩耗性平板部材と支
持平板部材とは拡散接合されていることを特徴とする遠
心薄膜乾燥機。 ２、前記支持平板部材は０．０３重量％以下のオーステ
ナイト系ステンレス鋼からなる特許請求の範囲第１項の
遠心薄膜乾燥機。 ３、前記オーステナイト系ステンレス鋼は重量で、Ｃｏ
０．３％以下、Ｓｒ１％以下、Ｍｎ０．５％以下、Ｃｒ
１５〜２０％、Ｎｉ１０〜１５％、Ｍｏ１〜３％及び残
部Ｆｅからなり、熱間塑性加工材である特許請求の範囲
第２項に記載の遠心薄膜乾燥機。 ４、前記耐摩耗性平板部材は重量で、Ｃ０．５〜２．０
％、Ｃｒ２０〜３０％及びＷ２〜１０％を含むＣｏ基鋳
造合金からなる特許請求の範囲第１項〜第３項のいずれ
かに記載の遠心薄膜乾燥機。[Claims] 1. A cylindrical body, a means for heating the cylindrical body, and a blade that rotates at high speed while sliding on the inner surface of the cylindrical body, and a waste liquid containing a radioactive substance flows into the cylindrical body. In a centrifugal thin film drying device that forms a thin film of the radioactive waste liquid between the blade and the inner surface of the cylindrical body and dries the radioactive substance to powder, the blade is a wear-resistant flat plate that slides on the inner surface of the cylindrical body. and a support flat plate member that supports the wear-resistant flat plate member, the wear-resistant flat plate member having a specific gravity greater than the support flat plate member and having an area ratio of 10 to 30% of the blade flat plate surface. . A centrifugal thin film dryer, wherein the wear-resistant flat plate member and the supporting flat plate member are diffusion bonded. 2. The centrifugal thin film dryer according to claim 1, wherein the supporting flat plate member is made of austenitic stainless steel of 0.03% by weight or less. 3. The austenitic stainless steel has a Co
0.3% or less, Sr 1% or less, Mn 0.5% or less, Cr
3. The centrifugal thin film dryer according to claim 2, which is a hot plastic processed material comprising 15 to 20% Ni, 10 to 15% Ni, 1 to 3% Mo, and the balance Fe. 4. The wear-resistant flat plate member has a weight of C0.5 to 2.0.
%, 20-30% Cr, and 2-10% W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61188478A JPH0810276B2 (en) | 1986-08-13 | 1986-08-13 | Centrifugal thin film dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61188478A JPH0810276B2 (en) | 1986-08-13 | 1986-08-13 | Centrifugal thin film dryer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6345597A true JPS6345597A (en) | 1988-02-26 |
| JPH0810276B2 JPH0810276B2 (en) | 1996-01-31 |
Family
ID=16224429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61188478A Expired - Lifetime JPH0810276B2 (en) | 1986-08-13 | 1986-08-13 | Centrifugal thin film dryer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0810276B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9125756B2 (en) | 2005-05-06 | 2015-09-08 | Titan Spine, Llc | Processes for producing regular repeating patterns on surfaces of interbody devices |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS593298A (en) * | 1982-06-29 | 1984-01-09 | 日本原子力事業株式会社 | Method of drying radioactive liquid waste |
-
1986
- 1986-08-13 JP JP61188478A patent/JPH0810276B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS593298A (en) * | 1982-06-29 | 1984-01-09 | 日本原子力事業株式会社 | Method of drying radioactive liquid waste |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0810276B2 (en) | 1996-01-31 |
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