JPS6015596B2 - Mechanical seal sealing element - Google Patents
Mechanical seal sealing elementInfo
- Publication number
- JPS6015596B2 JPS6015596B2 JP10048079A JP10048079A JPS6015596B2 JP S6015596 B2 JPS6015596 B2 JP S6015596B2 JP 10048079 A JP10048079 A JP 10048079A JP 10048079 A JP10048079 A JP 10048079A JP S6015596 B2 JPS6015596 B2 JP S6015596B2
- Authority
- JP
- Japan
- Prior art keywords
- sealing
- base material
- mechanical seal
- sliding ring
- seal
- 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
Landscapes
- Mechanical Sealing (AREA)
- Ceramic Products (AREA)
Description
【発明の詳細な説明】
この発明は、メカニカルシールの密封要素に係り、密封
摺動環とシール母材とを強固に接合したメカニカルシー
ルに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sealing element of a mechanical seal, and more particularly to a mechanical seal in which a sealing sliding ring and a seal base material are firmly joined.
従来、流体を密封する軸封装置としてのメカニカルシー
ルの密封要素において、密封摺動環として、アルミナ(
AI203)等のセラミック材料の単体が用いられるこ
とは、比較的少なかった。Conventionally, alumina (
Single ceramic materials such as AI203) were rarely used.
このことは、密封摺動環としてのセラミック材料の単体
をステンレス鋼のような金属からなる通常のシール母材
に接合保持するには、繁雑な手間を要し、これが最大要
因であった。即ち、従来では、焼隊め接合、0リングマ
ゥント接合(プレス圧入)等があり、何れも、シール母
村を溝加工や精度の高い寸法或いは0リング等の二次的
部品が必要であった。また、一方において、従釆より種
々のセラミック材料がメカニカルシールの密封沼動材料
として好適であろうと注目されていたが、高密度で材料
特性の優れたセラミック単体の成形体を得ることがむつ
かしいとされていた。しかし、近年の技術開発力はめご
・まし〈、特に最近、炭化ケイ素の高密度成形品を初め
とする、いわゆる“ニューセラミックス”と称される種
々のセラミック高密度成形品が最産的に得られるように
なった。本発明は、前述した事情と状況とを背景として
なされたもので、炭化ケイ素からなる単体を密封摺動環
として通用すべく、ステンレス鋼からなるシール母材へ
簡便にかつ強固に接合したシンプルなメカニカルシール
の密封要素を提供しようとするものである。The main reason for this is that it takes a lot of time and effort to bond and hold a single piece of ceramic material as a sealing sliding ring to a normal sealing base material made of metal such as stainless steel. That is, in the past, there have been sintered joining, O-ring mount joining (press-fitting), etc., and both require groove machining of the seal motherboard, highly accurate dimensions, or secondary parts such as O-rings. On the other hand, various ceramic materials have been attracting attention as being suitable as sealing fluid materials for mechanical seals, but it is difficult to obtain single ceramic molded bodies with high density and excellent material properties. It had been. However, in recent years, technological development has improved significantly, and in particular, various high-density ceramic molded products called "new ceramics," including high-density molded products of silicon carbide, have become the most productive. Now you can. The present invention was made against the background of the circumstances and situations described above, and is a simple structure in which a single silicon carbide material is simply and firmly joined to a seal base material made of stainless steel in order to be usable as a sealing sliding ring. It is intended to provide a sealing element for a mechanical seal.
以下、本発明を実施例図に基づき詳細に説明する。Hereinafter, the present invention will be explained in detail based on embodiment figures.
第1図は本発明に係るメカニカルシールの密封要素であ
る。FIG. 1 shows a sealing element of a mechanical seal according to the invention.
1は炭化ケイ素からなる密封摺動環、2はステンレス鋼
からなるシール母材、3はろう付層である。1 is a sealing sliding ring made of silicon carbide, 2 is a sealing base material made of stainless steel, and 3 is a brazing layer.
そして密封渚動環1はろう付層3を介してシール母材2
と強固に接合している。この密封摺動環1は第2図に示
す如く、少なくとも密封摺動画4以外の表面の一部分即
ち第2図では、密封摺動画4の背画5に金属被覆層6を
形成せしめておく。この金属被覆層6はセラミックであ
る背面5を金属化したいわゆるメタラィジングを施こし
たもので、ニッケル等の金属をメッキしたものである。
そしてこの金属被覆層6とシール母材2との間に、銀ろ
う等のろう付層3を介して数百℃に加熱すれば、ろう付
層3が溶融し、第1図の如く密封槽動残1とシール母材
2とがろう付接合され、強固に一体となったメカニカル
シールの密封要素が得られた。尚、密封摺動環1には、
高密度の炭化ケイ素の成形体からなる単体である。Then, the sealing ring 1 is connected to the sealing base material 2 through the brazing layer 3.
It is strongly connected with. As shown in FIG. 2, this sealing sliding ring 1 has a metal coating layer 6 formed on at least a portion of the surface other than the sealing sliding motion 4, that is, on the background 5 of the sealing sliding motion 4 in FIG. This metal coating layer 6 is obtained by applying so-called metallization, in which the back surface 5 made of ceramic is metallized, and is plated with a metal such as nickel.
Then, if a brazing layer 3 such as silver solder is placed between the metal coating layer 6 and the sealing base material 2 and heated to several hundred degrees Celsius, the brazing layer 3 will melt and the sealed tank will become visible as shown in FIG. The residual movement 1 and the seal base material 2 were joined by brazing, and a tightly integrated mechanical seal sealing element was obtained. In addition, the sealing sliding ring 1 includes:
It is a single unit consisting of a high-density silicon carbide molded body.
またろう付層3は、銀ろうの他に黄鋼ろう、リン鋼ろう
、アルミニウムろう等を用いてもよい。このように炭化
ケイ素からなる密封槽動環とステンレス鋼からなるシー
ル母材とが一体となったメカニカルシールの密封要素は
、従来のように密封摺動環とシール母材との接合部分に
密封流体の二次的な洩れ経路を生じせめることが一切な
くなるだけでなく炭化ケイ素の成形体という密封材料と
して理想的な成形体を密封槽動環として配されたメカニ
カルシールの密封要素である。さらに、第3図において
は、第2図の如く、メタラィジングを施こして金属被覆
層6を形成する代替として、融点の低い塩基性の融剤7
にて密封摺動環1の背画をエッチングし、活性化をして
第1図の如く、ろう付層3を介してシール母材2に接合
する。尚融剤7にはNa2C03,K2C03、等の溶
融、即ち塩基性金属化合物を単独若しくは混合したもの
で300〜900こ0の比較的融点の低い融剤7を用い
るものである。この融剤7は密封情動環1の背面に付着
しておき、そして母材2にろう付を施こすことも好まし
い。また第4図においては、密封摺動環1′として、1
〜25%の範囲にて金属ケイ素を含有せしめた炭化ケイ
素からなるセラミックを選び、その背面5にメタライジ
ングを施すことによって金属被覆層6を形成したもので
ある。そして1〜25%の金属ケイ素を含有せしめた炭
化ケイ素はコスト安で量産しやすく、汎用のメカニカル
シールの密封摺敷環1′として特に好適である。なお、
炭化ケイ素からなる密封摺動環は、他のセラミックと同
様に切削等の機械加工が困難である。このため従来では
、前述したようにシール母材に機械加工を施し、密封沼
敷環を競合する等して、接合保持していた。本発明では
、既に実施例で示したように、密封摺動環を接合、保持
するために、シール母材を何んら機械加工する必要がな
く、シール母村の接合画は平坦な面であればよい。しか
も密封槽動環についても、単純な形状であれ‘まよく、
従来ではシール母材との接合のために、時には、密封槽
動環の外周面や背面をやや複雑な形状に成形することも
あったが、このようなことを一切する必要がなくあった
。そして密封摺動環は、ろう付層によって直接シール母
材に接合されているので強固な保持力が得られた。なお
、メカニカルシール分野では、従来、シール母材と密封
摺動環との接合は、繁雑な接合方法を採り、しかも密封
摺動環の構成材料としては、擬綾体として得られやすい
タングステンカーバイト系のものが主流であり、係るメ
カニカルシールの密封要素の負荷能力は、一般に100
0k9/地・肌/s程度とされていたのに対し、本発明
に係るメカニカルシールの密封要素は、密封槽鰯残とし
て理想的な炭化ケイ素を密封槽動環に用いられており、
しかもシンプルな接合手段を探っているので、負荷能力
は、従来の4〜5倍にも高めることができる。In addition to silver solder, yellow steel solder, phosphor steel solder, aluminum solder, etc. may be used for the brazing layer 3. The sealing element of a mechanical seal in which the sealed tank moving ring made of silicon carbide and the seal base material made of stainless steel are integrated in this way is sealed at the joint between the seal sliding ring and the seal base material as in the past. This is a sealing element of a mechanical seal in which a silicon carbide molded body, which is ideal as a sealing material, is disposed as a sealed tank moving ring, in addition to completely eliminating the possibility of secondary fluid leakage paths. Furthermore, in FIG. 3, as an alternative to forming the metal coating layer 6 by metallizing as shown in FIG. 2, a basic flux 7 with a low melting point is used.
The background of the sealing sliding ring 1 is etched, activated, and bonded to the sealing base material 2 via the brazing layer 3 as shown in FIG. The flux 7 used is a molten basic metal compound such as Na2C03 or K2C03, alone or in combination, and has a relatively low melting point of 300 to 900%. It is also preferable that the flux 7 is adhered to the back surface of the sealing ring 1 and then brazed to the base material 2. In addition, in FIG. 4, 1 is used as the sealing sliding ring 1'.
A metal coating layer 6 is formed by selecting a ceramic made of silicon carbide containing metallic silicon in a range of 25% to 25%, and metallizing the back surface 5 of the ceramic. Silicon carbide containing 1 to 25% silicon metal is inexpensive and easy to mass produce, and is particularly suitable for the sealing ring 1' of a general-purpose mechanical seal. In addition,
A sealing sliding ring made of silicon carbide is difficult to machine, such as cutting, as with other ceramics. For this reason, in the past, as described above, the seal base material was machined and the seal ring was competed to maintain the connection. In the present invention, as already shown in the embodiments, there is no need for any machining of the seal base material in order to join and hold the seal sliding ring, and the joint image of the seal base material is a flat surface. Good to have. Moreover, even if the sealed tank moving ring has a simple shape, it is fine.
In the past, the outer peripheral surface and back surface of the sealed tank moving ring were sometimes molded into a somewhat complicated shape in order to join it to the seal base material, but there was no need to do this at all. Since the sealing sliding ring was directly joined to the sealing base material through the brazing layer, a strong holding force was obtained. In the field of mechanical seals, conventionally, complicated joining methods have been used to join the seal base material and the sealing sliding ring, and the constituent material of the sealing sliding ring is tungsten carbide, which is easily obtained as a pseudo-cross body. The load capacity of the sealing element of such mechanical seals is generally 100
In contrast, the sealing element of the mechanical seal according to the present invention uses silicon carbide, which is ideal for the sealed tank sardine residue, in the sealed tank moving ring.
Moreover, since we are looking for a simple joining method, the load capacity can be increased four to five times compared to conventional methods.
図面は何れも本発明の実施例であり、第1図はメカニカ
ルシールの密封要素の断面図、第2図、第3図、第4図
は各々、密封摺動環の断面図である。
1,1・・…・密勢摺敷環、2・・・・・・シール母材
、3・・・・・・ろう付層、6・・・・・・金属被覆層
、7・・・・・・融剤。
第1図第2図
第3図
第4図The drawings all show embodiments of the present invention; FIG. 1 is a sectional view of a sealing element of a mechanical seal, and FIGS. 2, 3, and 4 are sectional views of a sealing sliding ring. 1,1...Dense sliding ring, 2...Seal base material, 3...Brazing layer, 6...Metal coating layer, 7... ...Fluxing agent. Figure 1 Figure 2 Figure 3 Figure 4
Claims (1)
覆層を形成した炭化ケイ素からなる密封摺動環をステン
レス鋼からなるシール母材にろう付接合してなるメカニ
カルシールの密封要素。 2 少なくとも密封摺動画以外の表面の一部分を塩基性
の融剤にて活性化した炭化ケイ素からなる密封摺動環を
ステンレス鋼からなるシール母材にろう付接合してなる
メカニカルシールの密封要素。[Claims] 1. Sealing of a mechanical seal in which a sealing sliding ring made of silicon carbide with a metal coating layer formed on at least a portion of the surface other than the sealing sliding motion is brazed to a sealing base material made of stainless steel. element. 2. A sealing element for a mechanical seal, in which at least a portion of the surface other than the sealing sliding motion is made of silicon carbide activated with a basic flux, and a sealing sliding ring is brazed to a sealing base material made of stainless steel.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10048079A JPS6015596B2 (en) | 1979-08-06 | 1979-08-06 | Mechanical seal sealing element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10048079A JPS6015596B2 (en) | 1979-08-06 | 1979-08-06 | Mechanical seal sealing element |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5626779A JPS5626779A (en) | 1981-03-14 |
JPS6015596B2 true JPS6015596B2 (en) | 1985-04-20 |
Family
ID=14275076
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10048079A Expired JPS6015596B2 (en) | 1979-08-06 | 1979-08-06 | Mechanical seal sealing element |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6015596B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6259289U (en) * | 1985-10-02 | 1987-04-13 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5632435A (en) * | 1992-05-27 | 1997-05-27 | Sulzer-Escher Wyss Ag | Process for the production of a soldered joint |
CN101973144B (en) * | 2010-09-15 | 2012-10-10 | 中国人民解放军国防科学技术大学 | Layered aluminium-silica-alumina-silicon carbide composite material capable of laser welding and preparation method thereof |
CN111761155A (en) * | 2020-06-01 | 2020-10-13 | 中国电子科技集团公司第十四研究所 | Novel preparation method of integrated water hinge friction pair |
-
1979
- 1979-08-06 JP JP10048079A patent/JPS6015596B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6259289U (en) * | 1985-10-02 | 1987-04-13 |
Also Published As
Publication number | Publication date |
---|---|
JPS5626779A (en) | 1981-03-14 |
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