DE750661C - Boiler tube sealing machine - Google Patents
Boiler tube sealing machineInfo
- Publication number
- DE750661C DE750661C DEL94630D DEL0094630D DE750661C DE 750661 C DE750661 C DE 750661C DE L94630 D DEL94630 D DE L94630D DE L0094630 D DEL0094630 D DE L0094630D DE 750661 C DE750661 C DE 750661C
- Authority
- DE
- Germany
- Prior art keywords
- pipe
- rolling
- sealing machine
- boiler tube
- tube 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/06—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes in openings, e.g. rolling-in
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Description
Kesselräh#r-Dichtmasäine Das Undichtwerden der Rohrverbindungen an den Stirnwänden der Lokomotivkessel tritt sehr oft schon nach kurzer Fahrzeit der Lokomotiven auf. Dieser Übelstand ist begründet auf Schwingungen der langen Rohre während der Fahrt, wodurch die Verbindungen gelockert werden.Kesselräh # r-Dichtmasäine The leakage of the pipe connections the front walls of the locomotive boiler occurs very often after a short driving time Locomotives on. This deficiency is based on vibrations in the long pipes while driving, which loosens the connections.
Daher ist man bestrebt, diese Verbindungen durch Anwalzen der Rohrbrust an der Innen= leite der Kesselstirnwände und Anwalzen@ des Bördels an der Außenseite der Kesselstirnw 'i tid#e widerstandsfähiger zu machen.Therefore, efforts are made to make these connections by rolling the pipe face on the inside of the boiler end walls and rolling @ the flange on the outside to make the Kesselstirnw 'i tid # e more resistant.
Diese Art des Rohreinwalzens konnte aber das frühzeitige Undichtwerden der Rohrverbindungen wohl hinausschieben, aber nicht vollkommen verhindern. Das Undichtwerden der Rohre nach verhältnismäßig kurzer Dauer ist nicht durch.,das Rohreinwalzen selbst zu beheben, sondern ist hauptsächlich auf Verdichten, Hartwerden der inneren Rohrwand zurückzuführen. Dieser Vorgang tritt besonders dann ein, wenn übermäßig lange eingewalzt wird und sich infolge des andauernden Abwälzens. der Walzrollen das Rohrmaterial sogar vollständig verformt und abblättert.However, this type of pipe rolling could result in premature leaks Push out the pipe connections, but do not prevent them completely. That The pipes do not leak after a relatively short period of time fix yourself, but is mainly based on compacting, hardening of the inner Traced back pipe wall. This process occurs especially when excessive is rolled in for a long time and as a result of the continuous rolling. the rolling rollers the pipe material is even completely deformed and peeled off.
Wenn auch bei dem heutigen Stand der Einwalztechnik darauf gesehen wird, mit möglichst wenigen Umdrehungen der Rohrwalze das Rohr einzuwalzen, so ist ein Erhärten des Rohrmaterials nicht zu vermeiden. Die Erfahrung hat gelehrt, daß der Haftsitz der Rohre an den Einwalzstellen mit der Härte des Rohrmaterials abnimmt und sogar vollständig abgehoben wird und dann ein neues Rohr eingezogen werden muß.Even if it is seen on the current state of rolling technology is to roll the pipe with as few revolutions of the pipe roller as possible, so is a hardening of the pipe material cannot be avoided. Experience has taught that the tight fit of the pipes at the rolling-in points decreases with the hardness of the pipe material and is even completely lifted off and then a new pipe must be pulled in.
Gegenstand der Erfindung ist ein Verfahren, ,furch Zwischenlegen eines dehnbaren gehärteten Stahlmantels zwischen Walzrollen und innere Rohrwand ein Erhärten des Rohrmaterials zu verhindern.The invention relates to a method, by interposing a expandable hardened steel jacket between the rollers and the inner pipe wall a hardening of the pipe material.
Der Druck, den die Walzrollen ausüben, wird wohl auf die innere Rohrwand übertragen, aber die Walzrollen der Rohrwalzen wälzen sich nicht unmittelbar auf der Innenseite der Rohre ab.The pressure exerted by the rollers is likely to be on the inner pipe wall transferred, but the rolling rollers of the pipe rollers do not roll up immediately the inside of the pipes.
Die beiliegende Zeichnung, Abb. i, stellt eine Ausführungsform des Stahlmantels dar, Ab'b.2 eine Rohrwalze mit aufgeschobenem Stahlmantel von vorne gesehen und Abb.3 einen Schnitt durch eine Rohrwalze beim Einwalzen eines Rohres.The accompanying drawing, Fig. I, represents an embodiment of the Steel jacket, Fig. 2 shows a pipe roller with a steel jacket pushed on from the front seen and Fig.3 a section through a pipe roller when rolling a pipe.
Der Stahlmantel a ist durch die eigenartige Form des Stoßes b so federnd gemacht, daß es sich dauernd gegen die Walzrollen g anlegt. Sobald die Rohrwalze c bei Rechtsdrehung den Dorn d vorschiebt, drücken die Walzrollen g den Stahlmantel a gegen die innere Rohrwand f. Das Rohr e wird festgewalzt und verändert sein Gefüge an der Einwalzstelle nicht.The steel jacket a is so resilient due to the peculiar shape of the joint b made that it constantly rests against the rollers g. Once the pipe roller c advances the mandrel d when turned clockwise, the rollers g press the steel jacket a against the inner pipe wall f. The pipe e is rolled down and changes its structure not at the rolling point.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL94630D DE750661C (en) | 1938-04-14 | 1938-04-14 | Boiler tube sealing machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL94630D DE750661C (en) | 1938-04-14 | 1938-04-14 | Boiler tube sealing machine |
Publications (1)
Publication Number | Publication Date |
---|---|
DE750661C true DE750661C (en) | 1945-01-22 |
Family
ID=7287932
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEL94630D Expired DE750661C (en) | 1938-04-14 | 1938-04-14 | Boiler tube sealing machine |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE750661C (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1000017A (en) * | 1911-05-02 | 1911-08-08 | Richard S Kitchen | Protector for the beads of boiler-flues. |
US1112273A (en) * | 1914-02-07 | 1914-09-29 | Walter Le Roy Dixon | Protector for taxicab-meters. |
AT69035B (en) * | 1912-08-10 | 1915-06-10 | Leopold Luskac | Device for protecting and sealing boiler tubes rolled into the tube sheet. |
-
1938
- 1938-04-14 DE DEL94630D patent/DE750661C/en not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1000017A (en) * | 1911-05-02 | 1911-08-08 | Richard S Kitchen | Protector for the beads of boiler-flues. |
AT69035B (en) * | 1912-08-10 | 1915-06-10 | Leopold Luskac | Device for protecting and sealing boiler tubes rolled into the tube sheet. |
US1112273A (en) * | 1914-02-07 | 1914-09-29 | Walter Le Roy Dixon | Protector for taxicab-meters. |
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