DE482000C - Process for the production of cast wood drill bits - Google Patents

Process for the production of cast wood drill bits

Info

Publication number
DE482000C
DE482000C DESCH83070D DESC083070D DE482000C DE 482000 C DE482000 C DE 482000C DE SCH83070 D DESCH83070 D DE SCH83070D DE SC083070 D DESC083070 D DE SC083070D DE 482000 C DE482000 C DE 482000C
Authority
DE
Germany
Prior art keywords
iron
cast
production
drill bits
wood drill
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
DESCH83070D
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.)
EDUARD SCHLEICHER
Original Assignee
EDUARD SCHLEICHER
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 EDUARD SCHLEICHER filed Critical EDUARD SCHLEICHER
Priority to DESCH83070D priority Critical patent/DE482000C/en
Application granted granted Critical
Publication of DE482000C publication Critical patent/DE482000C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G15/00—Boring or turning tools; Augers
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals

Description

Verfahren zur Herstellung von gegossenen Holzbohrern Die Erfindung betrifft ein Verfahren zur Herstellung von. gegossenen Holzbohrern. Bislang wurden solche aus Stahl hergestellt, wobei wegen der eigenartigen Form der Holzbohrer eine sehr komplizierte und langwierige Maschinen- und Handarbeit Platz greifen mußte. Einfacher und billiger lassen sich die komplizierten Formen der Holzbohrer durch Gießen herstellen. Wenn dabei auch durch Wahl geeigneter Legierungen ein schnittfähiger Bohrer gebildet werden kann, so ist dieser, insbesondere nach dem Härteverfahren, so spröde, daß er leicht brechen wird.Method of making cast wood drill bits The invention relates to a method for producing. cast wood drill bits. So far have been those made of steel, with a very complicated and tedious machine and manual work had to take place. The complicated shapes of the wood drill bits can be passed through more easily and cheaply Establish casting. Even if by choosing suitable alloys a cutable one Drill can be formed, this is, especially after the hardening process, so brittle that it will break easily.

Erfindungsgemäß wird der Übelstand dadurch beseitigt, daß die Bohrer aus Temperroheisen gegossen, nach dem Gießen getempert, dann im weichen Zustande fertig bearbeitet, im Einsatz gehärtet und von der Härtetemperatur aus in an sich bekannter Weise im Wasser abgelöscht werden. Durch das Tempern bildet sich ein zäher, widerstandsfähiger Kern, während die Oberfläche, also insbesondere die Scheidkanten des Werkzeuges, eine genügende Härte und Schneidfähigkeit besitzen. Beispielsweise werden die Bohrer aus einem Temperroheisen gegossen, das mit nachstehender Gattierung verschmolzen wird.According to the invention the disadvantage is eliminated in that the drill Cast from tempering iron, tempered after casting, then in the soft state completely machined, hardened in use and inherently based on the hardening temperature be extinguished in the water in a known manner. The tempering forms a tough, more resistant core, while the surface, especially the cutting edges of the tool, have sufficient hardness and cutting ability. For example the drill bits are cast from a tempering iron with the following generic name is merged.

55 % umgeschmolzenes Tempergußeisen, 15'/, Schmiedeeisen, 15 % Siegener Weißeisen, 14,5 % Graueisen und 0,5 °%, Aluminiumzusatz. Das Gießen der Bohrer erfolgt in Sandformen.55% remelted malleable cast iron, 15 '/, wrought iron, 15% Siegener white iron, 14.5 % gray iron and 0.5 %, aluminum addition. The drills are poured in sand molds.

Claims (2)

PATENTANSPRÜCHE: I. Verfahren zur Herstellung von gegossenen Holzbohrern, dadurch gekennzeichnet, daß die Bohrer aus Temperroheisen gegossen, nach dem Guß getempert, danach fertig bearbeitet, in an sich bekannter Weise im Einsatz gehärtet sowie von der Härtetemperatur aus in Wasser abgelöscht werden. PATENT CLAIMS: I. Process for the production of cast wood drills, characterized in that the drill is cast from tempered iron after casting tempered, then finished, hardened in a known manner in use as well as being quenched in water from the hardening temperature. 2. Temperrohgußlegierung zur Herstellung von Bohrern nach Anspruch I, dadurch gekennzeichnet, daß dieselbe mit Hilfe nachstehender Gattierung hergestellt ist: 55 0/0 umgeschmolzenes Tempergußeisen, =5 0/0 Schmiedeeisen, 15 o/0 Siegener Weißeisen, 14,5 % Graueisen und 0,5 0% Aluminiumzusatz.2. Malleable cast alloy for the production of drills according to claim I, characterized in that the same is made with the help of the following classification: 55 0/0 remelted malleable cast iron, = 5 0/0 wrought iron, 15 0/0 Siegener white iron, 14.5% gray iron and 0.5 0% aluminum additive.
DESCH83070D 1927-06-23 1927-06-23 Process for the production of cast wood drill bits Expired DE482000C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DESCH83070D DE482000C (en) 1927-06-23 1927-06-23 Process for the production of cast wood drill bits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DESCH83070D DE482000C (en) 1927-06-23 1927-06-23 Process for the production of cast wood drill bits

Publications (1)

Publication Number Publication Date
DE482000C true DE482000C (en) 1929-09-04

Family

ID=7442654

Family Applications (1)

Application Number Title Priority Date Filing Date
DESCH83070D Expired DE482000C (en) 1927-06-23 1927-06-23 Process for the production of cast wood drill bits

Country Status (1)

Country Link
DE (1) DE482000C (en)

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