CH95079A - Process for the production of grinding and polishing media. - Google Patents
Process for the production of grinding and polishing media.Info
- Publication number
- CH95079A CH95079A CH95079DA CH95079A CH 95079 A CH95079 A CH 95079A CH 95079D A CH95079D A CH 95079DA CH 95079 A CH95079 A CH 95079A
- Authority
- CH
- Switzerland
- Prior art keywords
- grinding
- production
- mixture
- polishing
- polishing media
- Prior art date
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
- B24D3/20—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 organic
- B24D3/28—Resins or natural or synthetic macromolecular compounds
- B24D3/30—Resins or natural or synthetic macromolecular compounds for close-grained structure
-
- 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
- B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
- B24D3/342—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent
- B24D3/344—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent the bonding agent being organic
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Description
Verfahren zur Herstellung von Schleif- und Polierkörpern. Gegenstand der Erfindung ist ein Ver fahren zur Herstellung von Schleif- und Polier körpern aus einem Gemenge von beliebigen Faserstoffen, wie z.B. Holz-, Zellstoff- oder Baumwollfasern, und Schleifmitteln, z.B. Schmirgel, Korund, Eisenglanz, Quarzsand, Feuerstein, Glas usw., in gemahlenem Zu stande.
Das Verfahren besteht darin, dass das oben erwähnte Gemenge von Faserstoffen und Schleifmitteln unter Zusatz eines Bindemittels in Körper von beliebigen Formen gepresst wird, welche sich nach dem Anwendungs zweck der Schleif- und Polierkörper richten. Als Bindemittel dient das unter den Namen ,,Serikose" im Handel befindliche Produkt, welches nach Angabe der Herstellerin Äthyl- zellulose ist, durch Äthylierung von Zellulose gewonnen wird und durch starke Essigsäure oder wässeriges Rhodansalz in Lösung geht. Eine geeignete Lösung erhält man, wenn man Serikose mit der doppelten Menge Rhodan- calcium und der 5-6fachen Menge Wasser umrührt.
Es empfiehlt sich bei Anwendung dieser Lösung, den zur Lösung der Fasern vorher angefeuchteten Faserstoff vor dem Zu- satz des Bindemittels mit Essigsäure durch zuarbeiten, da die Lösung bei Berührung mit Wasser sofort erstarrt. Die Lösung verleiht den Schleif- bezw. Polierkörpern eine weiche, gummiartige Beschaffenheit, durch die ihre Schleif- und Polierfähigkeit sehr verbessert wird. Trotzdem bleiben die Körper fest und geschlossen, so dass sie sich nur in geringem Masse abnutzen. Ferner hat das Bindemittel den Vorzug, dass die mit ihm zusammenge leimten Schleifmittel im Wasser nicht ausein anderfallen, also auch zum Nassschleifen ver wendbar sind. Es empfiehlt sich, einen Zu satz von Zelluloseexantogensäureester zu ma chen, da diese die Wirkung besitzt, dass Teile der Schleifmittel, die etwa Serikose nicht an genommen haben, nachgeleimt werden.
Ein brauchbarer Schleif- und Polierkörper wird erhalten, wenn man zum Beispiel das Verfahren in folgender Weise ausführt Trockener Holzstoff wird in beliebiger Menge Wasser aufgeschlemmt und mit einem Rührwerk so lange gerührt, bis sich die Fasern vollständig voneinander getrennt haben. Das überschüssige Wasser lässt man durch ein Sieb abtropfen, bis der Stoff nur noch 50% Wasser besitzt. Der Stoff wird nun in einer Mischmaschine mit 7-grädiger Essigsäure imprägniert.
Danach wird die oben erwähnte Serikoselösung zugesetzt und das Ganze gut durchgearbeitet, wobei gleichzeitig Staubschmirgel in beliebiger zweckentspre chender Menge und zuletzt noch Zellulose- exantogensäureester in einer Menge, welche etwa 1/10 des Holzstoffgewichtes beträgt, zu gesetzt wird. Auf 100 Gewichtsteile der Holz stoffschmirgelmischung kommen etwa 5-20% Serikoselösung. Das Faser- und Schmirgel gemisch wird im nassen Zustande unter einem Druck von etwa 50 kg/qcm in die üblichen Formen gepresst.
Process for the production of grinding and polishing media. The invention relates to a process for the production of grinding and polishing bodies from a mixture of any fiber materials, such as e.g. Wood, pulp or cotton fibers, and abrasives, e.g. Emery, corundum, iron luster, quartz sand, flint, glass, etc., in a ground condition.
The method consists in that the above-mentioned mixture of fibrous materials and abrasives is pressed into bodies of any shape with the addition of a binding agent, which depends on the intended use of the grinding and polishing bodies. The product sold under the name "Serikose" serves as a binding agent, which according to the manufacturer is ethyl cellulose, is obtained by ethylation of cellulose and dissolves with strong acetic acid or aqueous rhodan salt. A suitable solution is obtained if Sericosis is stirred with twice the amount of rhodancalcium and 5-6 times the amount of water.
When using this solution, it is advisable to work through the previously moistened fiber to dissolve the fibers with acetic acid before adding the binding agent, as the solution solidifies immediately on contact with water. The solution gives the grinding respectively. Polishing bodies have a soft, rubber-like texture, which greatly improves their ability to be sanded and polished. Even so, the bodies remain firm and closed so that they wear out little. Furthermore, the binder has the advantage that the abrasives glued together with it do not fall apart in water, so they can also be used for wet sanding. It is advisable to add cellulose exantoic acid ester, as this has the effect that parts of the abrasives that have not accepted sericosis, for example, are resized.
A usable grinding and polishing article is obtained if, for example, the process is carried out in the following manner: Dry wood pulp is slurried in any amount of water and stirred with a stirrer until the fibers have completely separated from one another. The excess water is allowed to drain through a sieve until the fabric has only 50% water. The fabric is then impregnated with 7-grade acetic acid in a mixer.
Then the above-mentioned sericose solution is added and the whole thing worked through, at the same time adding dust emery in any appropriate amount and finally cellulose exantogenate in an amount which is about 1/10 of the weight of the wood pulp. About 5-20% sericose solution is added to 100 parts by weight of the wood emery mixture. The fiber and emery mix is pressed into the usual molds when wet under a pressure of about 50 kg / sq.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH95079T | 1920-08-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH95079A true CH95079A (en) | 1922-06-01 |
Family
ID=4352728
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH95079D CH95079A (en) | 1920-08-30 | 1920-08-30 | Process for the production of grinding and polishing media. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH95079A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0447608A1 (en) * | 1990-03-23 | 1991-09-25 | LUKAS-ERZETT VEREINIGTE SCHLEIF - UND FRÄSWERKZEUG-FABRIKEN GmbH & CO. KG | Abrasive tool, process for its manufacture, and use of a special material therefor |
-
1920
- 1920-08-30 CH CH95079D patent/CH95079A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0447608A1 (en) * | 1990-03-23 | 1991-09-25 | LUKAS-ERZETT VEREINIGTE SCHLEIF - UND FRÄSWERKZEUG-FABRIKEN GmbH & CO. KG | Abrasive tool, process for its manufacture, and use of a special material therefor |
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