DE535731C - Method for pouring sealing rings into the supporting bodies of fittings - Google Patents
Method for pouring sealing rings into the supporting bodies of fittingsInfo
- Publication number
- DE535731C DE535731C DEK117949D DEK0117949D DE535731C DE 535731 C DE535731 C DE 535731C DE K117949 D DEK117949 D DE K117949D DE K0117949 D DEK0117949 D DE K0117949D DE 535731 C DE535731 C DE 535731C
- Authority
- DE
- Germany
- Prior art keywords
- sealing rings
- fittings
- rings
- supporting bodies
- pouring sealing
- 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
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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gasket Seals (AREA)
Description
Armaturen für Gase, Flüssigkeiten und Dumpfe erhalten in der Regel besondere Dichtungsringe aus hochwertigerem Material als die übrigen Teile, da härtere und zähere Werkstoffe besseres Dichthalten und längere Lebensdauer flor Absperrorgane bewirken. Die Dichtringe worden in der Regel in schwalbenschwanzförmig eingearbeitete Nuten der Tragkörper (Gehäuse, Kegel, Keile u. dgl.) eingehämmert, gewalzt, gepreßt u. dgl. Den enorm gesteigerten Drücken und Temperaturen, insbesondere bei modernen Höchstdruck- und Heißdampfanlagen, sind jedoch die seither für die Dichtringe benutzten Werkstoffe, wie Rotguß, Bronze, Nickel u. dgl., nicht mehr gewachsen. Wesentlich besser geeignet sind die inzwischen auf den Markt gekommenen legierten und korrosionsbeständigen Stähle, welche eine vielfach größere Härte und Lebensdauer aufweisen als die früheren Werkstoffe. Mit der Härte derartiger Dichtringe wuchsen naturgemäß die Schwierigkeiten beim Einbringen derselben in ihre Tragkörper aus Gußeisen, Stahlguß oder Schmiedestahl, da letztere weicher und nachgiebiger sind als die harten Ringe. Noch schwieriger war es, die Ringe in ihren Befestigungsnuten dauernd dichturid festzuhalten, weil der Wärmeausdehnungskoeffizient der legierten Stähle wesentlich verschieden ist vom dem seiner Tragkörper. Insbesondere bei Heißdampf lockerten sich infolgedessen schon nach kurzer Betriebsdauer die Hartstahlringe in ihren Befestigungsnuten und ließen das Medium durchströmen.Valves for gases, liquids and vapors are usually given special sealing rings Made of higher quality material than the other parts, as harder and tougher materials cause better sealing and longer service life of flor shut-off devices. The sealing rings usually in dovetail-shaped grooves of the supporting body (housing, Cones, wedges and the like) hammered, rolled, pressed and the like. The enormously increased pressures and temperatures, especially in modern ultra-high pressure and superheated steam systems, are, however which have since been used for the sealing rings Materials such as gunmetal, bronze, nickel and the like, no longer grown. Those that have come onto the market in the meantime are much more suitable alloyed and corrosion-resistant steels, which have a much greater hardness and Longer than the previous materials. With the hardness of such sealing rings Naturally, the difficulties in introducing them into their supporting bodies grew Cast iron, cast steel or forged steel, there the latter are softer and more resilient than the hard rings. It was even more difficult that To hold rings permanently tightly in their fastening grooves because of the coefficient of thermal expansion of alloyed steels is significantly different from that of its supporting bodies. In particular in the case of superheated steam, the Hard steel rings in their fastening grooves and let the medium flow through them.
Die nachstehend beschriebene Erfindung bietet die Möglichkeit, den hochwertigen Dichtring mit seinen Tragkörpern aus Gußeisen, Stahlguß u. dgl. dauernd fest und dicht zu verbinden. Schon früher sind" Versuche bekannt geworden, die Dichtringe beim Abgießen der im Gießverfahren hergestellten Tragkörper mit in das Modell oder-in den Kern einzulegen und einzugießen, Diese Versuche ergaben keine günstigen Resultate, weil entweder die Schmelztemperatur der Dichtringe aus Rotguß, Bronze usw. wesentlich tiefer liegt als diejenige des Sehmelzgutes (Gußeisen, Stahlguß) und deshalb die Ringe einfach wegschmelzen, oder die Schmelztemperatur der Ringe wesentlich höher liegt als die des Sehmelzgutes; die Ringe lagen lose in dem ungegossenen Material, da sie als ^0 Kokille wirkten. Wie auch bekannt ist, hat man durch Verschränken des einzugießenden Körpers oder durch Eindrehen von Rillen erreichen körinen, daß das eingegossene Material nicht aus dem Tragkörper herausfiel. Eine einwandfreie und luftdichte Verbindung, so daß im Betrieb das Durchflußmedium nicht zwischen Dichtring und dem umgossenen Material durchströmte, hat man dadurch aber nicht erreichen können. e0"The invention described below offers the possibility of permanently and tightly connecting the high-quality sealing ring with its support bodies made of cast iron, cast steel and the like. "Attempts have already been made earlier to insert the sealing rings into the model or the core when casting the support bodies produced in the casting process and pour them into them is lower than that of the Sehmelzgutes (cast iron, cast steel), and therefore the rings melt away easily, or the melting temperature of the rings is considerably higher than that of the Sehmelzgutes;., the rings lying loosely in the non-molded material, as it acted as a ^ 0 mold as is known, one has to achieve by interlocking the body to be poured or by screwing in grooves that the poured material did not fall out of the support body but you cannot achieve this. e 0 "
Nach zahlreichen Versuchen ist es gelungen, ein Verfahren zu finden, welches eine dauernd dichte Befestigung des Ringes im Tragkörper durch Eingießen ergibt. Die Dichtringe werden mit schlanken, dünnen Ansätzen versehen, die infolge ihrer geringen Masse nicht mehr als Kokille wirken, sondern beim Eingießen des Sehmelzgutes rasch die Temperatur des letzteren annehmen. Im Gegensatz zu den bekannten Eingießverfahren, die nur ein festes Halten des hochwertigen Materials im Tragkörper bezwecken, werden die dünnen Ansätze der Dichtringe bei einer Ausbildung der Form, entsprechend Abbildung, schmelzen lind so eine innige Verbindung der beiden Materialien erzielen. Da der Schmelzpunkt legierter und korrosionsbeständiger Stähle bei etwa 1400 ° C. liegt, so ist es ohne weiteres möglich, derartige Dichtringe in Tragkörper aus Gußeisen, Stahlguß'usw. dicht und unlösbar einzuschmelzen. Auf der beiliegenden Zeichnung sind einige Ausführungen der Dichtringe dargestellt.After numerous attempts, it has been possible to find a method which is permanent tight fastening of the ring in the support body by casting results. The sealing rings will provided with slim, thin approaches, which due to their small mass no more than Chill act, but when pouring the Sehmelzgutes quickly the temperature of the latter accept. In contrast to the known pouring method, which only holds the The purpose of using high-quality material in the support body is to use the thin attachments of the sealing rings If the shape is designed as shown in the illustration, one of these will melt achieve an intimate connection between the two materials. Since the melting point is alloyed and Corrosion-resistant steels is around 1400 ° C., it is easily possible to produce such Sealing rings in support bodies made of cast iron, cast steel, etc. to melt tightly and indissolubly. Some designs are shown in the accompanying drawing of the sealing rings shown.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK117949D DE535731C (en) | Method for pouring sealing rings into the supporting bodies of fittings |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK117949D DE535731C (en) | Method for pouring sealing rings into the supporting bodies of fittings |
Publications (1)
Publication Number | Publication Date |
---|---|
DE535731C true DE535731C (en) | 1931-10-15 |
Family
ID=7243949
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEK117949D Expired DE535731C (en) | Method for pouring sealing rings into the supporting bodies of fittings |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE535731C (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1221403B (en) * | 1961-06-22 | 1966-07-21 | Karl Zur Steege Fa | Cast iron housing |
US3525499A (en) * | 1967-04-17 | 1970-08-25 | Dresser Ind | Valve seat construction |
US3593400A (en) * | 1969-08-18 | 1971-07-20 | Dresser Ind | Method of forming a butterfly valve |
FR2594518A3 (en) * | 1986-02-17 | 1987-08-21 | Feurs Fonderies Acieries Elect | Sealing ring and its application in implementing a method for manufacturing a moulded body in order to act as a seat for a stopper member of pipework fittings in particular |
DE4429295A1 (en) * | 1994-08-18 | 1996-02-22 | Klein Schanzlin & Becker Ag | Fitting with molded seat rings |
FR2729320A1 (en) * | 1995-01-13 | 1996-07-19 | Gec Alsthom Sapag | Fabrication of foundry component with insert of large dia. |
FR2729319A1 (en) * | 1995-01-13 | 1996-07-19 | Gec Alsthom Sapag | Fabrication of a foundry component with an insert |
EP3063440A4 (en) * | 2013-10-29 | 2017-07-26 | Emerson Process Management Regulator Technologies, Inc. | Valve seat, sealing gasket and pressure valve |
-
0
- DE DEK117949D patent/DE535731C/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1221403B (en) * | 1961-06-22 | 1966-07-21 | Karl Zur Steege Fa | Cast iron housing |
US3525499A (en) * | 1967-04-17 | 1970-08-25 | Dresser Ind | Valve seat construction |
US3593400A (en) * | 1969-08-18 | 1971-07-20 | Dresser Ind | Method of forming a butterfly valve |
FR2594518A3 (en) * | 1986-02-17 | 1987-08-21 | Feurs Fonderies Acieries Elect | Sealing ring and its application in implementing a method for manufacturing a moulded body in order to act as a seat for a stopper member of pipework fittings in particular |
DE4429295A1 (en) * | 1994-08-18 | 1996-02-22 | Klein Schanzlin & Becker Ag | Fitting with molded seat rings |
WO1996005927A1 (en) * | 1994-08-18 | 1996-02-29 | Ksb Aktiengesellschaft | Fitting with cast-in seating ring |
FR2729320A1 (en) * | 1995-01-13 | 1996-07-19 | Gec Alsthom Sapag | Fabrication of foundry component with insert of large dia. |
FR2729319A1 (en) * | 1995-01-13 | 1996-07-19 | Gec Alsthom Sapag | Fabrication of a foundry component with an insert |
EP3063440A4 (en) * | 2013-10-29 | 2017-07-26 | Emerson Process Management Regulator Technologies, Inc. | Valve seat, sealing gasket and pressure valve |
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