DE687397C - - Google Patents
Info
- Publication number
- DE687397C DE687397C DE1937P0075425 DEP0075425D DE687397C DE 687397 C DE687397 C DE 687397C DE 1937P0075425 DE1937P0075425 DE 1937P0075425 DE P0075425 D DEP0075425 D DE P0075425D DE 687397 C DE687397 C DE 687397C
- Authority
- DE
- Germany
- Prior art keywords
- additive
- iron
- still contains
- amount
- softer
- 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
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
- B24D3/06—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
- B24D3/08—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements for close-grained structure, e.g. using metal with low melting point
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Powder Metallurgy (AREA)
Description
Es ist bereits ein Verfahren zur Herstellung von Schneidwerkzeugen für Glas u. dgl. bekannt, bei welchem ein Preßkörper aus fein verteiltem kristallinischem Aluminiumoxyd und einem weicheren und dehnbaren Zusatzstaff bei einer die Schmelztemperatur des Zusatzstoffes übersteigenden Temperatur gesintert wird. Der Zusatzstoff kann hierbei der Ausgangsmischung in metallischer oder auchA method for manufacturing cutting tools for glass and the like is already known, in which a compact made of finely divided crystalline aluminum oxide and a softer and more flexible additional material sintered at a temperature exceeding the melting temperature of the additive will. The additive can be the starting mixture in metallic or
ίο oxydischer Form beigegeben werden. Als besonders vorteilhaft hatte sich bisher ein Zusatz von ι ο 0/0 Eisenoxyd, entsprechend etwa 60/0 metallischem Eisen in dem fertigen Schneidwerkzeug, erwiesen.ίο be added in oxidic form. As special So far, an addition of ι ο 0/0 iron oxide, corresponding to about 60/0 metallic iron in the finished cutting tool.
Erfindungsgemäß wurde festgestellt, daß derartige Werkzeuge nicht nur zum Schneiden von Glas ο. dgl., sondern sogar auch zum Drehen, Bohren, Hobeln und Fräsen, von Stahl, Kohle und Isolierstoffen aller Art einschließlich Porzellan geeignet sind, sofern die Menge des Zusatzstoffes erheblich gesteigert wird, und zwar derart, daß im fertigen Werkzeugkörper noch mindestens 200/0, jedoch nicht mehr als 40 0/0 des Zusatzmetalls enthalten sind. Wird bei der Herstellung des Werkzeuges von Eisenoxyd als Zusatzstoff ausgegangen, so muß mit Rücksicht auf den beim Sintern des Pulverpreßkörpers eintretenden Sauerstoffverlust die Menge des Zusatzstoffes entsprechend erhöht werden, also etwa 30 bis 60 0/0 betragen.According to the invention it was found that such tools are not only used for cutting of glass ο. Like., But even for turning, drilling, planing and milling, of Steel, coal and all kinds of insulating materials including porcelain are suitable, provided that the Amount of the additive is increased significantly, in such a way that in the finished tool body still contain at least 200/0, but not more than 40 0/0 of the additional metal are. If iron oxide is used as an additive in the manufacture of the tool, this must be taken into account oxygen loss occurring during sintering of the powder compact the amount of the additive are increased accordingly, i.e. about 30 to 60 0/0.
Zur Erhöhung der Standzeit des neuen, vornehmlich für Abdrehzwecke geeigneten Werkzeuges hat es sich als zweckmäßig erwiesen, von dem als weicheren Zusatzstoff verwendeten Eisen noch kleine Mengen eines oder mehrerer die Verschleißfestigkeit des Eisens- erhöhender Metalle, wie z.B. Chrom,To increase the service life of the new one, primarily suitable for calibration purposes Tool it has proven to be useful from the softer additive Used iron still small amounts of one or more of the wear resistance of the Iron-increasing metals such as chromium,
Vanadium, Titan, Kobalt oder Nickel, zugesetzt werden. Die Menge der letzterwähnten Metalle kann hierbei zwischen 0,1 und 50/0 betragen.Vanadium, titanium, cobalt or nickel, can be added. The amount of the last-mentioned metals can be between 0.1 and 50/0.
Claims (1)
"1 *■v 2. Verfahren nach Anspruch 1 unter Verwendung von Eisen als Zusatzstoff, dadurch gekennzeichnet, daß dem Eisen noch kleine Mengen von 0,1 bis 5 0/0 eines oder mehrerer die Verschleißfestigkeit des Eisens erhöhender Metalle, wie z. B. Chrom, Vanadium, Titan, Kobalt oder Nickel, zugefügt werden.i. Process for the production of cutting tools, e.g. for turning and milling, by sintering a mixture of finely divided crystalline aluminum oxide and a softer, ductile metallic or oxidic additive at a temperature exceeding the melting temperature of the additive, characterized in that the additive is in a such an amount is used that the finished sintered cutting unit -..- iZjsug still contains at least 20 0/0 and at most φ, \ φ? 'ο / ο of the additional metal.
"1 * ■ v 2. The method according to claim 1 using iron as an additive, characterized in that the iron still contains small amounts of 0.1 to 5% of one or more metals which increase the wear resistance of the iron, such as Chromium, vanadium, titanium, cobalt or nickel can be added.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1937P0075425 DE687397C (en) | 1937-06-22 | 1937-06-22 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1937P0075425 DE687397C (en) | 1937-06-22 | 1937-06-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE687397C true DE687397C (en) | 1940-01-29 |
Family
ID=7392759
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1937P0075425 Expired DE687397C (en) | 1937-06-22 | 1937-06-22 |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE687397C (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE748036C (en) * | 1940-11-24 | 1944-10-25 | Sintered hard material | |
DE922278C (en) * | 1943-06-05 | 1955-01-13 | Heinrich Dipl-Ing Spodig | Process for the production of hard, wear-resistant bodies |
DE935178C (en) * | 1940-06-30 | 1955-11-10 | Franz Dr Phil Dr Mont H Skaupy | Hard body |
DE975130C (en) * | 1941-09-25 | 1961-08-24 | Deutsche Edelstahlwerke Ag | Use of an oxide-metal composite material for the production of objects with high durability |
GR880100230A (en) * | 1987-04-10 | 1989-01-31 | Friedl & C0 Diamanttechnische | Metal incorporated bodies for grinding and cutting |
-
1937
- 1937-06-22 DE DE1937P0075425 patent/DE687397C/de not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE935178C (en) * | 1940-06-30 | 1955-11-10 | Franz Dr Phil Dr Mont H Skaupy | Hard body |
DE748036C (en) * | 1940-11-24 | 1944-10-25 | Sintered hard material | |
DE975130C (en) * | 1941-09-25 | 1961-08-24 | Deutsche Edelstahlwerke Ag | Use of an oxide-metal composite material for the production of objects with high durability |
DE922278C (en) * | 1943-06-05 | 1955-01-13 | Heinrich Dipl-Ing Spodig | Process for the production of hard, wear-resistant bodies |
GR880100230A (en) * | 1987-04-10 | 1989-01-31 | Friedl & C0 Diamanttechnische | Metal incorporated bodies for grinding and cutting |
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