JPH0218949B2 - - Google Patents
Info
- Publication number
- JPH0218949B2 JPH0218949B2 JP6457086A JP6457086A JPH0218949B2 JP H0218949 B2 JPH0218949 B2 JP H0218949B2 JP 6457086 A JP6457086 A JP 6457086A JP 6457086 A JP6457086 A JP 6457086A JP H0218949 B2 JPH0218949 B2 JP H0218949B2
- Authority
- JP
- Japan
- Prior art keywords
- metal
- end plate
- bonding material
- filter body
- brazing
- 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
Links
- 239000000463 material Substances 0.000 claims description 46
- 239000002184 metal Substances 0.000 claims description 40
- 229910052751 metal Inorganic materials 0.000 claims description 40
- 238000005219 brazing Methods 0.000 claims description 32
- 239000000843 powder Substances 0.000 claims description 14
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 239000000835 fiber Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 238000005304 joining Methods 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000000945 filler Substances 0.000 description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 7
- 230000035515 penetration Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000006069 physical mixture Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、金属製多孔濾過体に目詰まりを生
じさせることなく、かつ確実に端板を固着するこ
とを目的とした金属製濾過エレメントの製造方法
に関するものである。Detailed Description of the Invention (Industrial Field of Application) The present invention provides a metal filtration element for reliably fixing an end plate without clogging a metal porous filter. This relates to a manufacturing method.
（従来の技術）
高温の流体や腐食性のある流体を濾過する濾過
エレメントとして、焼結合金やプリーツ加工され
円筒状に成形した金網でなる金属製多孔濾過体に
端板を接合した濾過エレメントが用いられてい
る。そして、前記濾過エレメントの濾過体と端板
の接合部は濾過体同様に高温や腐食に耐える必要
がある。(Prior art) As a filter element for filtering high-temperature fluids and corrosive fluids, there is a filter element in which an end plate is bonded to a metal porous filter body made of a sintered alloy or a pleated cylindrical wire mesh. It is used. The joint portion between the filter body and the end plate of the filter element needs to withstand high temperatures and corrosion like the filter body.
従来、濾過体と端板との接合手段として樹脂接
着剤による接着、アーク溶接あるいは焼結による
接合が知られている。しかしながら、接着剤を使
用するものは耐熱性がなく、アーク溶接によるも
のは溶接代が相当量必要なため濾材の有効面積が
減少し、焼結によるものにおいては接合部の高さ
が不揃いな金網濾材に対してはシールできないと
いうようにいずれも欠点を有している。 Conventionally, bonding using a resin adhesive, arc welding, or sintering is known as a means for bonding a filter body and an end plate. However, those using adhesives are not heat resistant, those using arc welding require a considerable amount of welding allowance, which reduces the effective area of the filter medium, and those using sintering require wire mesh with uneven heights at the joints. All of them have drawbacks, such as the inability to seal against filter media.
（発明により解決すべき問題点）
従来の通常のろう付による濾過体と端板との接
合では、溶融したろう材が毛細管現象により濾過
体に吸い上げられ目詰まり状態となりそのまま固
化するので、濾過面積が計画値より少なくなり、
計画通りのエレメント寿命を保つことができな
い。また接合部ではろう材の量が減少し、接合力
不足となりあるいはシール不良をおこすことがあ
る。(Problems to be Solved by the Invention) When the filter body and end plate are joined by conventional brazing, the molten brazing material is sucked up into the filter body by capillary action, becomes clogged, and solidifies. becomes less than the planned value,
Element life cannot be maintained as planned. Additionally, the amount of brazing filler metal may decrease at the joint, resulting in insufficient bonding force or poor sealing.
（問題点を解決する為の手段）
この発明は上記ろう付の問題点を解決すること
により、濾過面積を減少させず、接合強度不足や
シール不良のない金属製濾過エレメントの製造方
法である。(Means for Solving the Problems) The present invention solves the above-mentioned problems of brazing, thereby providing a method for manufacturing a metal filtration element without reducing the filtration area, without insufficient bonding strength, or with poor sealing.
すなわち、円筒状の金属製多孔濾過体と皿状の
端板をろう付するにあたり、両者の間に粉末ろう
材と、該ろう材よりも融点の高い金属粉体とを混
合した接合材を介在させた後、ろう材のみが溶融
する温度まで加熱してろう付する濾過エレメント
の製造方法である。 That is, when brazing a cylindrical metal porous filter body and a dish-shaped end plate, a bonding material containing a powder brazing material and a metal powder having a higher melting point than the brazing material is interposed between the two. In this method, the filter element is manufactured by heating and brazing the brazing material to a temperature at which only the brazing material melts.
（発明の作用）
この発明において、濾過体と端板との間に介在
させた接合材は、ろう材と粉体とは物理的に混合
されているにすぎないので、夫々の化学的特性は
維持されている。このためにろう材は溶融するが
粉体は溶融しない。したがつて、溶融したろう材
中に混入された粉体が溶融したろう材の粘度を上
げる働きをし、ろう材は比較的高年度を保つの
で、濾材への浸透は実用上支障のない程度に押え
られる。(Function of the invention) In this invention, since the bonding material interposed between the filter body and the end plate is only a physical mixture of the brazing material and the powder, the chemical properties of each are different. Maintained. For this reason, the brazing filler metal melts, but the powder does not. Therefore, the powder mixed into the molten brazing filler metal works to increase the viscosity of the molten brazing filler metal, and the brazing filler metal maintains a relatively high lifespan, so that it penetrates into the filter medium to a level that does not pose a practical problem. be held down by
以下この発明の実施例を図面に基いて説明す
る。 Embodiments of the present invention will be described below with reference to the drawings.
実施例 １
ドーナツツ型をしたフイルターエレメントの端
板１上にろう材（BNi−５）40％（重量）と粉体
（ニツケル粉）60％（重量）とを混合した接合材
２を散布し、この上に円筒状の金属製濾過体３の
一端面を重ねた。次いで前記金属製濾過体３の他
端面に重り４を載せて真空炉へ入れ、1120℃で25
分間加圧加熱した後、炉から取り出し、常温で冷
却した。Example 1 A bonding material 2 made of a mixture of 40% (by weight) brazing filler metal (BNi-5) and 60% (by weight) powder (nickel powder) was spread on the end plate 1 of a donut-shaped filter element. One end surface of the cylindrical metal filter body 3 was placed on top of this. Next, a weight 4 was placed on the other end surface of the metal filter body 3, and the metal filter body 3 was placed in a vacuum furnace and heated at 1120°C for 25 minutes.
After heating under pressure for a minute, it was taken out from the furnace and cooled to room temperature.
前記ろう材の融点は1050℃であり、ニツケル粉
の融点は1459℃であるから、炉内においてはろう
材のみが溶融し、ニツケル粉は溶融することな
く、接合材２は全体として比較的高粘度を維持し
た。そのために接合材２はほとんど濾過体に浸透
することはなく、濾過体３と端板１とは接合され
た。 The melting point of the brazing metal is 1050°C and the melting point of the nickel powder is 1459°C, so only the brazing metal melts in the furnace, the nickel powder does not melt, and the bonding material 2 as a whole has a relatively high temperature. Maintained viscosity. Therefore, the bonding material 2 hardly penetrated into the filter body, and the filter body 3 and the end plate 1 were bonded.
次いで他方の端板５に接合材２を散布した後、
この上に上記濾過体３を上下逆にして重ね、重り
４で加圧しつつ前記と同様に真空炉内で加熱し
た。加熱後取り出し、常温で冷却したところ、接
合材２の濾過体への浸透はほとんど認められない
フイルターエレメントを得ることができた。 Next, after spraying the bonding material 2 on the other end plate 5,
The above-mentioned filter body 3 was stacked on top of this in an upside-down manner, and heated in a vacuum furnace in the same manner as described above while pressurizing with a weight 4. When the filter element was taken out after heating and cooled to room temperature, it was possible to obtain a filter element in which almost no penetration of the bonding material 2 into the filter body was observed.
上記において、端板５の接合過程において、端
板１の接合用の接合材の流下は認められなかつ
た。これは、端板１を接合する為に加熱した際
に、高温下においてろう材とニツケル粉とが化学
的に結合し、以つてろう材の溶融温度が上昇した
ためと考えられる。 In the above, during the process of joining the end plates 5, no flow of the bonding material for joining the end plates 1 was observed. This is thought to be because the brazing material and the nickel powder chemically bonded together at high temperatures when the end plates 1 were heated to join them, thereby increasing the melting temperature of the brazing material.
したがつて、この実施例のように上下の端板
１，５を別工程で接合すれば接合材２の流下は生
じず、接合材２の濾過体３への浸透が可及的に少
ないフイルターエレメントを得ることができるこ
ととなる。勿も、ニツケル粉等の粉体の混合率を
上げればそれに伴い接合材の粘度は高まるので、
接合材の粘度が十分に高い場合には上下の端板を
同時に加熱接合することとしても、上方の接合材
が流下するおそれは少ないこととなる。 Therefore, if the upper and lower end plates 1 and 5 are bonded in separate steps as in this embodiment, the bonding material 2 will not flow down, and the filter will have as little penetration of the bonding material 2 into the filter body 3 as possible. This means that you can obtain the element. Of course, if you increase the mixing ratio of powder such as nickel powder, the viscosity of the bonding material will increase accordingly.
If the viscosity of the bonding material is sufficiently high, even if the upper and lower end plates are simultaneously heated and bonded, there is little risk that the upper bonding material will flow down.
前記粉体は、溶融したろう材の粘度を高める為
のものであるから、ろう材よりも高融点（作業
上、融点の差は200度Ｃ以上あることが好ましい）
であればその材質に制約なく、また複数種混合す
ることもできるが、ニツケル粉、SUS粉その他
の金属粉を用いるのが一般的である。そして粉体
の混合率は、前記接合材の濾材への浸透程度が、
実用上支障のない程度まで低下し得ればよいので
あり、実用上30％〜90％（重量）の範囲、好まし
くは40％〜70％（重量）の範囲と考えられる。 Since the powder is used to increase the viscosity of the molten brazing filler metal, it has a higher melting point than the brazing filler metal (for work purposes, it is preferable that the difference in melting point is 200 degrees C or more).
If so, there are no restrictions on the material, and multiple types can be mixed, but nickel powder, SUS powder, and other metal powders are generally used. The mixing ratio of the powder is determined by the degree of penetration of the bonding material into the filter material.
It is sufficient if the reduction can be reduced to a level that does not cause any practical problems, and in practice it is considered to be in the range of 30% to 90% (by weight), preferably in the range of 40% to 70% (by weight).
実施例 ２
第３図の実施例は濾過体と端板の接合部に金属
繊維焼結体を介在させるものである。すなわち、
端板１の上面にろう材とニツケル粉とを混合した
接合材２を散布し、この上に金属繊維焼結体６を
敷設し、更にこの上に接合材２を散布した後、こ
の上に金属製濾過体３を載せ、真空炉中で加圧し
つつ加熱（1120℃、25分）した後、常温で冷却
し、端板１と金属製濾過体３とを接合させた。次
いで上方の端板５も同様の要領で接合し、第３図
に示すフイルターエレメントを得た。Embodiment 2 In the embodiment shown in FIG. 3, a metal fiber sintered body is interposed at the joint between the filter body and the end plate. That is,
A bonding material 2 made of a mixture of brazing filler metal and nickel powder is spread on the top surface of the end plate 1, a metal fiber sintered body 6 is laid on top of this, and the bonding material 2 is further spread on top of this. The metal filter body 3 was placed thereon, heated under pressure in a vacuum furnace (1120° C., 25 minutes), and then cooled to room temperature to bond the end plate 1 and the metal filter body 3 together. Next, the upper end plate 5 was also joined in the same manner to obtain the filter element shown in FIG. 3.
この実施例においては、金属繊維焼結体６の上
下両面に接合材２を介在させたが、接合材は下面
又は上面のいずれか一方のみに介在させてもよ
い。そして下面にのみ接合材を介在させる場合に
は、接合材の粘度は比較的小さくとも（粉体の比
率が少なくとも）足りることとなる。 In this embodiment, the bonding material 2 is interposed on both the upper and lower surfaces of the metal fiber sintered body 6, but the bonding material may be interposed only on either the lower surface or the upper surface. When the bonding material is interposed only on the lower surface, even if the viscosity of the bonding material is relatively low (at least the proportion of powder) is sufficient.
この実施例において、接合材２は溶融再固化す
ることにより、接合材２は金属繊維焼結体６と一
体化される。 In this embodiment, the bonding material 2 is integrated with the metal fiber sintered body 6 by melting and resolidifying the bonding material 2.
そして、金属繊維焼結体６は濾過体の端面と端
板との間隔を埋めるパツキングとして働くので、
端面が不揃いとなり易い金属網濾材であつても、
気密に接合されることとなる。 Since the metal fiber sintered body 6 acts as a packing to fill the gap between the end face of the filter body and the end plate,
Even with metal mesh filter media whose end surfaces tend to be uneven,
It will be airtightly joined.
（発明の効果）
この発明は、ろう材とこれよりも高融点の金属
粉体とを混合した接合材を用い、ろう材のみを溶
融させて、金属製濾過体と端板とを接合する濾過
エレメントの製造方法であるから、ろう材の浸透
による目詰まりがなく、濾過面積を減少させるこ
とがないので計画通りの寿命を有する濾過エレメ
ントが得られる。また接合部においてろう材が減
量されないので接合不足やシール不良が起らない
製造方法である。(Effects of the Invention) The present invention provides a filtration method that uses a bonding material that is a mixture of a brazing material and a metal powder having a higher melting point than the brazing material, melts only the brazing material, and joins a metal filter body and an end plate. Since this is an element manufacturing method, there is no clogging due to penetration of the brazing filler metal, and there is no reduction in the filtration area, so a filtration element with a planned lifespan can be obtained. Furthermore, since the amount of brazing material is not reduced at the joint, this manufacturing method does not cause insufficient joints or poor sealing.
第１図は第一の実施例において、一方の端板の
接合工程を示す断面図、第２図は同じく他方の端
板の接合工程を示す断面図、第３図は第二の実施
例のフイルターエレメントの断面図である。
１，５……端板、２……接合材、３……濾過
体、６……金属繊維焼結体。
Fig. 1 is a sectional view showing the joining process of one end plate in the first embodiment, Fig. 2 is a sectional view showing the joining process of the other end plate, and Fig. 3 is a sectional view showing the joining process of the other end plate. It is a sectional view of a filter element. 1, 5... End plate, 2... Bonding material, 3... Filter body, 6... Metal fiber sintered body.
Claims (1)
間に粉末のろう材と、該ろう材よりも高融点の金
属粉体とを混合した接合材を介在させた後、前記
接合材をろう材のみが溶融する温度まで加熱して
ろう材を溶融させ以つて濾過体と端板とを接合す
ることを特徴とする金属製濾過エレメントの製造
方法。 ２ 濾過体と端板との間に、前記接合材および金
属繊維焼結体を介在させた特許請求の範囲第１項
記載の金属製濾過エレメントの製造方法。 ３ 接合材は金属繊維焼結体の両面または一面に
介在させることとした特許請求の範囲第２項記載
の金属製濾過エレメントの製造方法。[Claims] 1. A bonding material made of a powdered brazing material and a metal powder having a higher melting point than the brazing material is interposed between the cylindrical metal porous filter body and the dish-shaped end plate. A method for manufacturing a metal filtration element, comprising: heating the joining material to a temperature at which only the brazing material melts, melting the brazing material, and joining the filter body and the end plate. 2. The method for manufacturing a metal filter element according to claim 1, wherein the bonding material and the metal fiber sintered body are interposed between the filter body and the end plate. 3. The method for manufacturing a metal filtration element according to claim 2, wherein the bonding material is interposed on both surfaces or one surface of the metal fiber sintered body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6457086A JPS62220270A (en) | 1986-03-20 | 1986-03-20 | Manufacture of metal made filter element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6457086A JPS62220270A (en) | 1986-03-20 | 1986-03-20 | Manufacture of metal made filter element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62220270A JPS62220270A (en) | 1987-09-28 |
| JPH0218949B2 true JPH0218949B2 (en) | 1990-04-27 |
Family
ID=13262014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6457086A Granted JPS62220270A (en) | 1986-03-20 | 1986-03-20 | Manufacture of metal made filter element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62220270A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08132226A (en) * | 1994-11-02 | 1996-05-28 | Nippon Seisen Co Ltd | Brazed structure of metal porous body and its production |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH064500B2 (en) * | 1990-02-10 | 1994-01-19 | 藤間商事株式会社 | How to join the chimes |
| JP2002136820A (en) * | 2001-07-24 | 2002-05-14 | Nippon Seisen Co Ltd | Method for fixing filter member |
-
1986
- 1986-03-20 JP JP6457086A patent/JPS62220270A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08132226A (en) * | 1994-11-02 | 1996-05-28 | Nippon Seisen Co Ltd | Brazed structure of metal porous body and its production |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62220270A (en) | 1987-09-28 |
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