DE539083C - Process for the production of hollow drilling steels - Google Patents

Process for the production of hollow drilling steels

Info

Publication number
DE539083C
DE539083C DEF63186D DEF0063186D DE539083C DE 539083 C DE539083 C DE 539083C DE F63186 D DEF63186 D DE F63186D DE F0063186 D DEF0063186 D DE F0063186D DE 539083 C DE539083 C DE 539083C
Authority
DE
Germany
Prior art keywords
production
hollow drilling
iron
hollow
irons
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
DEF63186D
Other languages
German (de)
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.)
Fagersta Bruks AB
Original Assignee
Fagersta Bruks AB
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 Fagersta Bruks AB filed Critical Fagersta Bruks AB
Application granted granted Critical
Publication of DE539083C publication Critical patent/DE539083C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
    • B23P15/32—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools twist-drills

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatment Of Steel (AREA)

Description

Die Erfindung bezieht sich auf ein Verfahren zur Herstellung von hohlen Bohrerstählen nach Patent 493 935, bei welchem in die Bohrung des hohlen Werkstückes ein aus Eisen oder einem anderen geeigneten Metall oder einer Metallegierung bestehendes Rohr eingesetzt wird, welches entweder vor oder nach dem Einsetzen in das Werkstück mit einem geeigneten Füllstoff, beispielsweise Silbersand, angefüllt und an den Enden zugeschlossen wird, wonach das Auswalzen bis auf die gewünschte Abmessung erfolgt und dann der Füllstoff entfernt wird. Die Erfindung bezweckt, einen inwendig gegen Zerfressen und gegen Rostangriff des beim Bohren verwendeten Spülwassers sehr widerstandsfähigen Bohrerstahl herzustellen, und besteht darin, daß für das einzusetzende Rohr ein gegen die obenerwähnten Angriffe unempfindliches Material, wie z. B. Lan- ao cashire-Eisen, Armco-Eisen, rostfreies Eisen oder Stahl, kupferlegiertes Eisen, Nickel o. dgl., verwendet wird und daß dieses Rohr nach, dem Auswalzen im Bohrerstahl sitzenbleibt, asThe invention relates to a method for producing hollow drill steels according to patent 493,935, in which in the bore of the hollow workpiece made of iron or another suitable metal or metal alloy Tube is used, which either before or after being inserted into the workpiece is filled with a suitable filler, for example silver sand, and sealed at the ends, followed by rolling up to the desired dimension and then the filler is removed. The invention aims to have an interior against corroding and rust attack of the flushing water used during drilling to produce resistant drill steel, and consists in that for the to be used Rohr a material that is insensitive to the above-mentioned attacks, such as e.g. B. Lan- ao cashire iron, Armco iron, stainless iron or steel, copper alloy iron, nickel o. The like., is used and that this tube remains sitting in the drill steel after rolling out, as

Claims (1)

Patentanspruch:Claim: Verfahren zur Herstellung von hohlen Bphrerstählen nach Patent 493 935, dadurch gekennzeichnet, daß für das in das hohle Werkstück einzusetzende Rohr ein gegen Zerfressen und gegen Rostangriff des beim Bohren verwendeten Spülwassers widerstandsfähiges Material, wie z. B. Lancashire-Eisen, Armco-Eisen, rostfreies Eisen oder Stahl, kupferlegiertes Eisen, -Nickel ο. dgl., verwendet wird.Process for the production of hollow tubular steels according to patent 493,935, thereby characterized in that for the tube to be inserted into the hollow workpiece, an anti-corrosive and anti-rust attack the rinsing water used when drilling is resistant material, such as. B. Lancashire irons, Armco irons, Stainless iron or steel, copper alloy iron, nickel ο. Like., is used.
DEF63186D 1927-02-09 1927-03-08 Process for the production of hollow drilling steels Expired DE539083C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE539083X 1927-02-09

Publications (1)

Publication Number Publication Date
DE539083C true DE539083C (en) 1931-11-20

Family

ID=20311547

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF63186D Expired DE539083C (en) 1927-02-09 1927-03-08 Process for the production of hollow drilling steels

Country Status (1)

Country Link
DE (1) DE539083C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE758462C (en) * 1940-03-14 1952-06-03 Hartmetallwerkzeugfabrik Meuts Rock percussion drill

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE758462C (en) * 1940-03-14 1952-06-03 Hartmetallwerkzeugfabrik Meuts Rock percussion drill

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