DE675290C - Manufacture of tools with a hard metal part which is surrounded by the holder metal and, if necessary, protrudes therefrom - Google Patents
Manufacture of tools with a hard metal part which is surrounded by the holder metal and, if necessary, protrudes therefromInfo
- Publication number
- DE675290C DE675290C DEH137459D DEH0137459D DE675290C DE 675290 C DE675290 C DE 675290C DE H137459 D DEH137459 D DE H137459D DE H0137459 D DEH0137459 D DE H0137459D DE 675290 C DE675290 C DE 675290C
- Authority
- DE
- Germany
- Prior art keywords
- tools
- hard metal
- holder
- surrounded
- manufacture
- 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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
- B23K28/003—Welding in a furnace
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
Description
Im Patent 666 720 ist ein Verfahren zur Herstellung von Ziehringen oder Ziehsteinen durch Sintern pulverförmigen Ausgangsstoffes beschrieben, das darin besteht, daß der pulverförmige Ausgangsstoff in eine metallische Bandage, denen Schmelzpunkt über der Sintertemperatur des Hartmetalls liegt, gefüllt und mit dieser Bandage in einen an sich bekannten Ofen, vorzugsweise einen Induktionsofen, eingesetzt wird, in dem eine Berührung mit Kohlenstoff nicht stattfindet und eine Erhitzung auf eine Temperatur erfolgt, bei der das Hartmetall sintert.In the 666 720 patent there is a method for producing drawing rings or dies described by sintering powdery starting material, which consists in that the powdered raw material in a metallic bandage, which melting point is above the sintering temperature of the hard metal is filled and with this bandage in one known furnace, preferably an induction furnace, is used in which a contact with carbon does not take place and heating to a temperature takes place in which the hard metal sinters.
Es wurde nun gefunden, daß sich das gleiche Verfahren auch zur Herstellung anderer Werkzeuge anwenden läßt, deren zur Arbeitsleistung bestimmter Teil aus einem Hartmetall bestehen soll. Beispielsweise lassen sich in der gleichen Weise Bohrkronen, Drehstichel und andere spanabhebende Werkzeuge herstellen. In solchen Fällen, in denen der Hartmetallteil über dein Halter herausragen muß, ist es ohne weiteres möglich, den Halter- nach dem Einsintern des Hartmetalls teilweise auf mechanischem oder chemischem Wege zu entfernen, tun-· einen Teil des Hartmetalls aus dem Halter hervortreten zu lassen.It has now been found that the same process can be used to manufacture other Can use tools whose part intended for work performance should consist of a hard metal. For example, let in the same way drill bits, turning tools and other cutting tools produce. In those cases where the hard metal part protrudes from your holder must, it is easily possible to remove the holder after sintering in the hard metal To partially remove them mechanically or chemically, part of the hard metal protrudes from the holder allow.
Es ist zwar schon bekannt, Werkzeuge durch Auf sin tern von pulverförmiger]! Hartmetall auf den Werkzeughalter herzustellen. Da aber nach diesem Vorschlag das Aufsintern in einer aus Kohle loder Graphit bestehenden Preßform vorgenommen wird, so besteht die Gefahr, daß der Halter oder das Hartmetall Kohlenstoff aufnimmt. Die Erfindung umgeht diese Gefahr.It is already known to sinter tools by sintering powder]! hard metal to manufacture on the tool holder. But since after this suggestion the sintering is made in a mold made of carbon or graphite, so there is a risk that the holder or the hard metal will absorb carbon. The invention avoids this danger.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH137459D DE675290C (en) | 1933-04-12 | 1933-04-12 | Manufacture of tools with a hard metal part which is surrounded by the holder metal and, if necessary, protrudes therefrom |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH137459D DE675290C (en) | 1933-04-12 | 1933-04-12 | Manufacture of tools with a hard metal part which is surrounded by the holder metal and, if necessary, protrudes therefrom |
Publications (1)
Publication Number | Publication Date |
---|---|
DE675290C true DE675290C (en) | 1939-05-04 |
Family
ID=7177766
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEH137459D Expired DE675290C (en) | 1933-04-12 | 1933-04-12 | Manufacture of tools with a hard metal part which is surrounded by the holder metal and, if necessary, protrudes therefrom |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE675290C (en) |
-
1933
- 1933-04-12 DE DEH137459D patent/DE675290C/en not_active Expired
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