JPS59144861A - Seal ring for floating seal device - Google Patents
Seal ring for floating seal deviceInfo
- Publication number
- JPS59144861A JPS59144861A JP1623783A JP1623783A JPS59144861A JP S59144861 A JPS59144861 A JP S59144861A JP 1623783 A JP1623783 A JP 1623783A JP 1623783 A JP1623783 A JP 1623783A JP S59144861 A JPS59144861 A JP S59144861A
- Authority
- JP
- Japan
- Prior art keywords
- seal ring
- seal
- plasma
- ring
- value
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3496—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member use of special materials
Abstract
Description
【発明の詳細な説明】
本発明は、建設機械の回転部分等に装着されるフローテ
ィングシールのシールリ・ング、％に、大型ダンプトラ
ックに用いられる大径なるフローティングクールのシー
ルリングに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seal ring for a floating seal attached to a rotating part of a construction machine, and particularly to a large diameter floating cool seal ring used for a large dump truck.
従来一般に、フローティングシールのシールリングは、
耐摩耗性が必要であるので、Ｗ”−Ｃｒ等を多量に含有
する％殊鋳鉄によって一体品として製作している。この
様なり−ルリングはシール面が高硬度で耐摩耗性に優れ
たものとな゛る。Conventionally, the seal ring of a floating seal is
Since abrasion resistance is required, it is manufactured as a single piece using special cast iron containing a large amount of W''-Cr, etc.This kind of ring has a highly hard sealing surface and has excellent abrasion resistance. It's going on.
−力、大型ダンプトラックに湿・式多板式ブレーキを装
着する場合には、フローティングシールを用いて湿式多
板式ブレーキの内部の油が洩れ出ることを防止す為必要
がある。- When installing a wet multi-disc brake on a large dump truck, it is necessary to use a floating seal to prevent the oil inside the wet multi-disc brake from leaking.
このフローティングシールは土砂等が入らないので耐土
砂摩耗性は必要がないが直径が２８０φ。This floating seal does not require dirt and sand abrasion resistance since it does not allow dirt to enter, but its diameter is 280φ.
４０５φ、５４７φ、８２１φ と大きくかつ回転数が
太きいために高速走行時での耐焼付性がを求される。Because they are large in diameter (405φ, 547φ, and 821φ) and have high rotational speeds, they require seizure resistance during high-speed running.
つまり、大径で高速回転するフローティングシールのシ
ール面には、高高圧（／”）が作用すると共に１周速（
Ｖ）が速くなるので、ＰＶ値が大きくなり、耐焼付性が
要求される。In other words, high pressure (/'') acts on the sealing surface of a floating seal that has a large diameter and rotates at high speed.
V) becomes faster, the PV value becomes larger and seizure resistance is required.
例えは、特殊鋳鉄一体品のシールリングを利用したフル
ーティングシールを大型ダンプトラックの湿式多板式ブ
レーキに装着した場合にはまり、ＰＶ値が＋ ００ ”
／ 、・シを越えると焼付ｃｍ ｓｅｅ
いてしま９゜
このために、従来の７０−ティングシールでは耐焼付性
が乏しいために？＃Ｊ速走、行・する大型ダンプトラッ
クにＶｉ、機械式ブレーキしか装着できない。For example, when a fluting seal that uses a special cast iron integral seal ring is attached to a wet multi-disc brake on a large dump truck, the PV value increases by +00.
/ ,・Setting occurs when the seal exceeds cm see 9°.Is this because the conventional 70-ting seal has poor seizure resistance? #J Only Vi and mechanical brakes can be installed on large dump trucks that run at high speed.
ここで、＃２付きとは一対のシールリングのシール面と
シール面との摩擦による発熱に起因する現象であり、そ
れを防止するにはシール１和の摩擦係数を小で＜シて発
熱を少なくすれは良い。Here, #2 attachment is a phenomenon caused by heat generation due to friction between the seal surfaces of a pair of seal rings, and to prevent this, the friction coefficient of the sum of seals 1 should be kept small to reduce heat generation. The less the better.
そこで、本出願人は先に、軟鋼部のシールリング本体の
シール面に、Ｗｃ系の溶射材料をプラズマ溶射して高硬
度のプラズマ溶射層を形成したシールリングを出願した
。Therefore, the present applicant previously filed an application for a seal ring in which a high-hardness plasma sprayed layer was formed by plasma spraying a Wc-based thermal spray material on the sealing surface of a seal ring main body made of mild steel.
例えば下記表１に示すＩＦＣ系の溶射材料を、シール面
にプラズマ溶射してシールリングとし、コノシールリン
グを用いたフローティングシールの耐焼付性を試験した
きころ、ＰＶ価が１８０シ・シ （車速ｑ ｏ、”、ｙ
’ｈ ）まで焼付きが起らｒＪ ＳＰｃ
ずに、大型ダンントラックに用いたところ９０に！
今の晶速走行が可能となった。For example, the IFC-based thermal spray material shown in Table 1 below was plasma-sprayed onto the seal surface to form a seal ring, and the seizure resistance of a floating seal using the Cono Seal Ring was tested. Vehicle speed q o,”,y
'H) No seizure occurred until rJ SPc, and when I used it on a large dump truck, it was 90! It is now possible to run at crystal speeds.
しかし、このシールリングであると、ｐＶ値が１００ｋ
ｇ／・・シを越えると、第１図に示すよｃｍ
ｓｅＣ
うにシール表面にヘアクラックが発生してしまう。However, with this seal ring, the pV value is 100k.
g/...If you cross shi, cm as shown in Figure 1.
seC Hair cracks occur on the surface of the sea urchin seal.
このヘアクラックは時間の経過につれて進展することが
ないか、潜在的に剥離の危険性があるから好ましくない
。This hair crack is undesirable because it either does not develop over time or there is a potential risk of peeling.
本発明は上記の事情に鑑みなσれたものであり、その目
的、は、高ＰＶ値に対して耐焼付８が優れていると共に
、ヘアクラックが発生することがないようにしたフロー
ティングゾールのシールリングを提供することである。The present invention was developed in view of the above circumstances, and its purpose is to create a floating sol that has excellent seizing resistance 8 for high PV values and does not cause hair cracks. To provide a seal ring.
つ甘り、本発明に係るシールリングは、シールリング本
体のシール面に、Ｍｏｆｆ：５〜３０％添加混合したＦ
Ｐ’ｃ系溶射材料をプラズマ溶射してプラズマ溶射層を
形成したものでるる。 −−以下第２図以降を参照し
て本発明に係るシールリングの製造方法の実施例を説明
する。−ます、第２図に示す如くの鋼材より成る棒材１
を熱間圧延して第３図に示す如く所定のシ−ルリングの
断面と同−断［加の半加工品２を製作する。In other words, the seal ring according to the present invention is made by adding and mixing Moff: 5 to 30% to the sealing surface of the seal ring body.
A plasma-sprayed layer is formed by plasma-spraying a P'c-based thermal spray material. --Hereinafter, an embodiment of the seal ring manufacturing method according to the present invention will be described with reference to FIG. 2 and subsequent figures. - Bar material 1 made of steel material as shown in Fig. 2
is hot-rolled to produce a blank 2 having the same cross-section as that of a predetermined seal ring, as shown in FIG.
そこで、この半加工品２を第４図に示すようにロール曲
け′機３によって所定直径にロール曲けして第５図に示
すような環状ｆ４４を製作し、この塊状体４の接続部５
をフラッシュバットウェルティングによって溶接固定し
、その溶接部のパリを旋削加工によって除去（パリ取す
）スることで７？＋＋定形状のシールリング本体とする
。Therefore, as shown in FIG. 4, this semi-finished product 2 is roll-bent to a predetermined diameter using a roll bending machine 3 to produce an annular shape f44 as shown in FIG.
Welded and fixed by flash butt welting, and then removed the burr from the weld by turning. ++ The seal ring body has a fixed shape.
このようであるから、材料の歩留りを殆んど１００１→
［常に良くできると共に、僅かな旋削加工を行なえば良
いので、シールリング本体を安価に製作できる。Because of this, the material yield is almost 1001→
[The seal ring body can be manufactured at a low cost because it is always well made and requires only a small amount of turning work.
以上の様に１−２で製作したシールリング不休をシール
リングに加工するｒこは、第６図に示すよりに所定寸法
にザイジングした後に、第７図（ａ）１−（ｄ）Ｋ示す
よ１旋削加工１ｏし、洗浄した後にｋ ｇｌＪ ｒ！Ｊ
ＪＩ Ｉをブ？スト処理し、その後にＭｏを添加し７′
ｉｃ溶射拐料１２をプラズマ溶射し、そのプラズマ溶射
したプラズマ溶射Ｍ１２′の表面をテーバラップ仕上け
し、さらに平面ラップ仕上げする。Processing the seal ring produced in 1-2 as described above into a seal ring is shown in Figures 7(a), 1-(d)K after sizing to the specified dimensions as shown in Figure 6. After 1 turning and cleaning, k glJ r! J
JI Boo? After that, Mo was added and 7'
The IC thermal spray coating material 12 is plasma sprayed, and the surface of the plasma sprayed M12' is subjected to taber lapping and then flat lapping.
ここで、プラズマ溶射する隘躬拐料の具体例としては、
表１に示す溶射材料にＭｔｙを２０％混合したものであ
る。Here, specific examples of the adhesion materials to be plasma sprayed are:
The thermal spray material shown in Table 1 was mixed with 20% Mty.
この様にして製作した／−ルリングを、ｐＶ値＝ ＋ｏ
ｏ ｋｆ／２・ｙの条件で３００Ｈベンチテストｃｒｎ
ｓｅｃ
した。The /-ru ring produced in this way has a pV value = +o
300H bench test crn under o kf/2・y conditions
sec.
゛ このシール表面を第８図Ｖこ示し、これによりヘ
アクラックが発生し７ていないことが判明する０才だ、
前−Ａミのシールリングを用いたフローティングシール
の耐焼付性を試験したら、ｐＶ値が１８０ｋｆ／ｃｒＩ
−′ｎ／ｓｅｏまで焼付くことがなかった。゛ The surface of this seal is shown in Figure 8 V, which shows that hair cracks have not occurred in the 0-year-old.
When testing the seizure resistance of a floating seal using a previous-A seal ring, the pV value was 180 kf/crI.
There was no burning up to -'n/seo.
本発明は以上の様になり、’ Ａ Ｐ Ｖ値（例えは”
”Ｏ”／ａＡ ’ −”ｅｃ ）での耐焼付性が優れて
いると共に、るるｐＶ値（例えば１００にりｒｒｆ Ｌ
”’ｓｅｃ ）でシール表面にヘアクラックが発生ず
ることがないシールリングとなる。The present invention is as described above, and 'AP V value (for example, '
"O"/aA'-"ec) has excellent seizure resistance, and has a low pV value (e.g. 100 rrf L)
A seal ring that does not cause hair cracks on the seal surface with ``'sec''.
第１図は従来例によるシールリングの７−ル表面顕微鏡
写真、第２図〜第７図は本発明に係るシールリングの製
作方法を工程順に示す説明図、第８図は本発明に係るシ
ールリングのシール表面顕微鏡写真である。
出願人 株式会社 小松製作所
代理人 弁理士 米 原 正 章
弁理士洪水 忠
第１図
第６図Fig. 1 is a 7-L surface micrograph of a conventional seal ring, Figs. 2 to 7 are explanatory diagrams showing the manufacturing method of the seal ring according to the present invention in the order of steps, and Fig. 8 is a seal according to the present invention. This is a micrograph of the ring seal surface. Applicant: Komatsu Ltd. Agent: Patent attorney: Masaaki Yonehara Patent attorney: Tadashi Fukumi Figure 1 Figure 6
Claims (1)
添加混合したｌｌ’ｃ系溶射材料をプラズマ溶射してプ
ラズマ溶射層を形成したことを特徴とするフローティン
グシールのシールＩＪ ンク。1. A floating seal seal ink, characterized in that a plasma sprayed layer is formed by plasma spraying a ll'c type thermal spray material mixed with 5 to 30 chlorides on the sealing surface of a seal ring main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1623783A JPS59144861A (en) | 1983-02-04 | 1983-02-04 | Seal ring for floating seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1623783A JPS59144861A (en) | 1983-02-04 | 1983-02-04 | Seal ring for floating seal device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59144861A true JPS59144861A (en) | 1984-08-20 |
| JPH0260910B2 JPH0260910B2 (en) | 1990-12-18 |
Family
ID=11910945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1623783A Granted JPS59144861A (en) | 1983-02-04 | 1983-02-04 | Seal ring for floating seal device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59144861A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001025505A1 (en) * | 1999-10-06 | 2001-04-12 | Sandvik Ab; (Publ) | Cemented carbide wear part and lapping method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4965441A (en) * | 1972-10-24 | 1974-06-25 |
-
1983
- 1983-02-04 JP JP1623783A patent/JPS59144861A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4965441A (en) * | 1972-10-24 | 1974-06-25 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001025505A1 (en) * | 1999-10-06 | 2001-04-12 | Sandvik Ab; (Publ) | Cemented carbide wear part and lapping method |
| US6541135B1 (en) | 1999-10-06 | 2003-04-01 | Sandvik Ab | Seal rings with improved friction and wear properties |
| US6609953B2 (en) | 1999-10-06 | 2003-08-26 | Sandvik Ab | Seal rings with improved friction and wear properties |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0260910B2 (en) | 1990-12-18 |
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