DE538193C - Process for the manufacture of lead pipes - Google Patents

Process for the manufacture of lead pipes

Info

Publication number
DE538193C
DE538193C DE1930538193D DE538193DD DE538193C DE 538193 C DE538193 C DE 538193C DE 1930538193 D DE1930538193 D DE 1930538193D DE 538193D D DE538193D D DE 538193DD DE 538193 C DE538193 C DE 538193C
Authority
DE
Germany
Prior art keywords
lead
pipes
brushes
scrapers
recipient
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
Application number
DE1930538193D
Other languages
German (de)
Inventor
Otto Spiess
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Schuckertwerke AG
Siemens Corp
Original Assignee
Siemens Schuckertwerke AG
Siemens Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens Schuckertwerke AG, Siemens Corp filed Critical Siemens Schuckertwerke AG
Application granted granted Critical
Publication of DE538193C publication Critical patent/DE538193C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels for metal extruding
    • B21C35/04—Cutting-off or removing waste

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Removal Of Insulation Or Armoring From Wires Or Cables (AREA)

Description

Verfahren zur Herstellung von Bleirohren Bekanntlich wird bei den gebräuchlichen Bleipressen zur Herstellung von Bleirohren und Bleimänteln ein einwandfreies Verschweißen bzw. Verschmelzen des nach dem Herauspressen einer Füllung im Rezipienten verbleibenden erstarrten Bleirestes mit der neu hinzukommenden heißen Füllung insbesondere durch die auf der Oberfläche des Bleirestes vorhandenen Oxydschichten vielfach verhindert. Die Folge davon ist, daß die gepreßten Bleimäntel oder Rohre undichte und schwache Stellen erhalten, an denen sich bei mechanischen Beanspruchungen, insbesondere beim Verlegen oder auch im Betriebe, Risse bilden, die die Rohre und insbesondere auch die von solchen Rohren umhüllten Kabel unbrauchbar machen.Process for the production of lead pipes It is known that in the common lead presses for the production of lead pipes and lead jackets Welding or fusing of the after pressing out a filling in the recipient remaining solidified lead residue with the newly added hot filling in particular often prevented by the oxide layers on the surface of the lead residue. The consequence of this is that the pressed lead jackets or pipes are leaky and weak Get places where mechanical stresses, especially when Laying or even in the establishment, cracks form, which the pipes and in particular also render the cables encased by such pipes unusable.

Gemäß der Erfindung wird ein einwandfreies Verschweißen zweier aufeinanderfolgender Füllungen dadurch erzielt, daß man von der Oberfläche des im Rezipienten verbliebenen Bleirestes die trennenden Oxydschichten und Verunreinigungen z. B. mit Hilfe rotierender Schaber, Bürsten o. dgl. löst. Es genügt dabei schon, wenn durch die mechanische Bearbeitung der Oberfläche die Oxydschicht so unterbrochen wird, daß dadurch unoxydiertes Blei an die Oberfläche gebracht wird. Dies kann durch Unterpflügen des Oxydes erfolgen. Alsdann genügt dieWärmeübertragung von dem neuen flüssigen Blei auf den Bleirest, um die Oberflächenschichten des Restes hinreichend tief zu verflüssigen. Nach dein Einbringen der neuen Füllung des flüssigen Bleies steigen dann die losgelösten Oxydteilchen an die Oberfläche des flüssigen Bleies und können von dort leicht entfernt werden. Gegebenenfalls kann man die Oxydteilchen auch schon vor dem Einbringen der neuen Füllung aus der Presse dadurch entfernen, daß man sie mit Hilfe eines zweckmäßig mit der rotierenden Schabe- oder Bürstenvorrichtung verbundenen Schlauches absaugt. Die umlaufende Bewegung wird den Schabern, Bürsten o. dgl. vorteilhaft über eine biegsame Welle erteilt. In manchen Fällen ist es auch vorteilhaft, die auf dem Bleirest befindliche Oxydschicht auf chemischem Wege von diesem zu lösen.According to the invention, a perfect welding of two successive Fillings achieved by removing the surface of what remains in the recipient Lead residues the separating oxide layers and impurities such. B. with the help of rotating Scrapers, brushes or the like. Dissolves. It is enough if through the mechanical Processing of the surface the oxide layer is interrupted in such a way that thereby unoxidized Lead is brought to the surface. This can be done by plowing under the oxide. Then the heat transfer from the new liquid lead to the lead residue is sufficient, in order to liquefy the surface layers of the remainder sufficiently deep. After your Introducing the new filling of the liquid lead then the detached oxide particles rise to the surface of the liquid lead and can be easily removed from there. If necessary, the oxide particles can also be used before the new ones are introduced Remove the filling from the press by removing it with the aid of an expedient sucks the hose connected to the rotating scraper or brush device. The circumferential movement is the scrapers, brushes o. The like. Advantageous via a flexible shaft granted. In some cases it is also beneficial to use the lead residue to detach the oxide layer from this by chemical means.

Claims (1)

PATENTANSPRÜCHE: z. Verfahren zur Herstellung von Bleirohren, insbesondere von Kabelmänteln, in Strarigpressen, dadurch gekennzeichnet, daß vor dem Einbringen einer neuen Füllurig in den Rezipienten die auf dem erstarrten, in dem Rezipienten verbliebenen Bleirest befindlichen Oxydschichten und Verunreinigungen gelöst werden. a. Verfahren nach Anspruch r, dadurch gekennzeichnet, nach Anspruch Loslösen der ßaydschichten mit Hilfe von rotierenden Schabern, Bürsten o. dgl. bewirkt wird. 3. Verfahren nach Anspruch i und z, dadurch gekennzeichnet, daB inan die losgelösten Oxydteilchen vor dem Einbringen der neuen Füllung absaugt. q.. Vorrichtung zur Ausübung des Verfahrens nach Anspruch z, dadurch gekennzeichnet, daB die rotierende Bewegung den Schabern, Bürsten o. dgl. durch eine biegsame Welle erteilt wird.PATENT CLAIMS: e.g. Process for the production of lead pipes, in particular of cable sheaths, in extrusion presses, characterized in that before the introduction a new filling in the recipient that on the frozen one in the recipient remaining lead residues and impurities are dissolved. a. Method according to Claim r, characterized in that, according to Claim, detachment of the ßaydschichten With the help of rotating scrapers, brushes or the like. Is effected. 3. Procedure according to Claims i and z, characterized in that inan the detached oxide particles sucks off before inserting the new filling. q .. device for carrying out the procedure according to claim z, characterized in that the rotating movement of the scrapers, Brushes o. The like. Is granted by a flexible shaft.
DE1930538193D 1930-10-21 1930-10-21 Process for the manufacture of lead pipes Expired DE538193C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE538193T 1930-10-21

Publications (1)

Publication Number Publication Date
DE538193C true DE538193C (en) 1931-11-11

Family

ID=6558027

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1930538193D Expired DE538193C (en) 1930-10-21 1930-10-21 Process for the manufacture of lead pipes

Country Status (1)

Country Link
DE (1) DE538193C (en)

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