DE415764C - Grinding tool - Google Patents

Grinding tool

Info

Publication number
DE415764C
DE415764C DED44442D DED0044442D DE415764C DE 415764 C DE415764 C DE 415764C DE D44442 D DED44442 D DE D44442D DE D0044442 D DED0044442 D DE D0044442D DE 415764 C DE415764 C DE 415764C
Authority
DE
Germany
Prior art keywords
alumina
grinding tool
grain
magnesium
silicates
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
DED44442D
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.)
Ton & Steinzeug Werke AG
Original Assignee
Ton & Steinzeug Werke AG
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 Ton & Steinzeug Werke AG filed Critical Ton & Steinzeug Werke AG
Priority to DED44442D priority Critical patent/DE415764C/en
Application granted granted Critical
Publication of DE415764C publication Critical patent/DE415764C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B24GRINDING; POLISHING
    • B24DTOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02Physical 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
    • B24D3/04Physical 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
    • B24D3/14Physical 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 ceramic, i.e. vitrified bondings
    • B24D3/16Physical 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 ceramic, i.e. vitrified bondings for close-grained structure, i.e. of high density

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Description

Schleifwerkzeug. Die Herstellung von Schleifscheiben, Schleifsteinen usw. beruht auf der Bindung harter Körper, wie Schmirgel, Korund, Elektrokorund, Karborundum usw., durch geeignete weniger harte und im allgemeinen plastische Bindemittel, beispielsweise Gummi oder keramische Stoffe. Die besten Schleifscheiben liefert im allgemeinen die keramische Bindung. Bei dieser findet eine Einbettung der Schleifkörner in das keramische Bindemittel, Kaolin oder Ton, analog den allgemeinen keramischen Arbeit#methoden statt, worauf die Erhärtung ebenfalls nach den Prinzipien der Keramik bei höherer Temperatur erfolgt. Hierbei werden die harten Schleifmaterialien von dem gebrannten, weniger harten Bindemittel umhüllt, ohne daß zwischen beiden eine chemische Reaktion stattfindet.Grinding tool. The manufacture of grinding wheels, whetstones etc. is based on the binding of hard bodies, such as emery, corundum, electrical corundum, Carborundum, etc., by suitable less hard and generally plastic binders, for example rubber or ceramic materials. The best grinding wheels supplies generally the ceramic bond. This is where the abrasive grains are embedded in the ceramic binder, kaolin or clay, analogous to the general ceramic Work # methods take place, whereupon the hardening also according to the principles of ceramics takes place at a higher temperature. Here the hard grinding materials are used by enveloped in the fired, less hard binder, without any between the two chemical reaction takes place.

Es ist bekannt, Schleifscheiben aus einer Mischung von Serpentin, Feldspat und Quarzsand herzustellen. Dieses Verfahren ist jedoch unzweckmäßig, weil der Zusatz von Quarzsand, also reiner oder annähernd reiner Kieselsäure, zu dem in der Mischung vorhandenen Feldspat den Sinterungs- und Schmelzpunkt sehr eng aneinanderschiebt, so daß eine praktische Fabrikation nach diesem Verfahren ausgeschlossen ist.It is known to make grinding wheels from a mixture of serpentine, Producing feldspar and quartz sand. However, this method is inconvenient because the addition of quartz sand, i.e. pure or nearly pure silica, to the Feldspar present in the mixture pushes the sintering and melting point very close to one another, so that a practical fabrication by this method is impossible.

Ferner sind Schleifmittel, bestehend aus gebranntem Magnesiumsilikat und Ton als Bindemittel bekannt (Patent 38z665). Sie sind dadurch gekennzeichnet, daß das Schleifkorn oberflächlich aus der Doppelverbindung Magnesium-Tonerde-Silikat und nach d,-m Innern zu allmählich mehr und mehr aus einem unveränderten Magnesiumsilikatkern besteht. Im Verlauf des Herstellungsprozesses hat also eine chemische Bindung des Schleifkorns durch das Bindemittel stattgefunden.There are also abrasives made of burnt magnesium silicate and clay known as a binder (Patent 38z665). They are characterized by that the surface of the abrasive grain consists of the double compound magnesium-alumina-silicate and after d, -m interior to gradually more and more from an unchanged magnesium silicate core consists. In the course of the manufacturing process, the Abrasive grain took place through the binder.

Prinzipiell dasselbe Verfahren, jedoch unter völliger Umkehrung der chemischen Reaktion und unter gleichzeitiger Steigerung des technischen Effektes, liegt der vorliegenden Erfindung zugrunde, die Schmirgel,Korund,Elektrokorund usw. als Hauptschleifkorn und Magnesiasilikate,wie Specksein, Talk usw., als Bindemittel benutzt. Beide Verfahren haben also eine chemische Bindung zwischen Magnesia- und Tonerdeverbindungen gemeinsam. Sie unterscheiden sich aber grundsätzlich dadurch, daß in dem einen Fall harte Magnesiumsilikate mit weichen Tonerdes'likaten gebunden werden, während im Falle der vorliegenden Erfindung eine chemische Bindung harter Tonerde (nicht Tonerdesilikate) mit weichem Magnesiumsilikat erfolgt. Während des Brandes derartiger Schleifscheiben bleibt das Tonerdekorn des Schleifmittels in chemischer und physikalischer Beziehung unverändert. An der Berührungsfläche zwischen Tonerdekorn und Speckstein usw. bildet sich jedoch ein überaus hartes und zähes Magnesium-Tonerde-Silikat, welches sowohl an sich ein vorzügliches Schleifmittel ist als auch dafür sorgt, daß die Einbettung der Tonerdeschleifkörner in das- Bindemittel durch diese Übergangsschicht eine so sichere und dauerhafte wird, daß ein Herausbrechen des Tonerdekornes nicht mehr möglich ist und die Abnutzung der Schleifscheiben hierdurch vermindert wird. Der Erfolg dieses Verfahrens ist ein sehr großer und der Fortschritt gegenüber Korundscheibendie mit Ton gebunden sind, sehr bedeutend. Die Schleifscteben im ganzen wie in ihren einzelnen Bestand-eilen sind zäher, fester und haben eine größere Schleifwirkung. Durch die Wahl der Korngröße und der Mischung der einzelnen Korngrößen miteinander und ihres wechselnden Versatzes mit Speckstein, anderen Magnesiumsilikaten sowie sonstigen geeigneten Zusatzflußmitteln sowie je nach der Brennhöhe und -dauer der hierbei bedingten chemischen Reaktionsmöglichkeit kann man die Zusammensetzung der entstehenden Produkte bewußt den Zweckmäßigkeitsgründen entsprechend beeinflussen. In analoger Weise wie Speckstein und andere Magnesiumsilikate für sich und unter Zusatz anderer Flußmittel kann man auch an dieser Stelle Maggesium-Kalzium-Silikate sowie Kalziumsilikate an sich und andere Erdalkaliverbindungen benutzen, die in gleicher VGeise wirken, also an der Oberfläche des Schleifkornes mit demselben eine chemische Verbindung eingehen und dadurch das Schleifkorn sicherer im Bindemittel einbetten.In principle the same procedure, but completely reversed chemical reaction and at the same time increasing the technical effect, is the basis of the present invention, the emery, corundum, electrical corundum, etc. as main abrasive grain and magnesia silicates such as bacon, talc, etc. as binders used. Both processes have a chemical bond between magnesia and Alumina compounds in common. But they differ fundamentally in that that in the one case hard magnesium silicates bound with soft alumina liqueurs become, while in the case of the present invention, a chemical bond is harder Alumina (not alumina silicates) is made with soft magnesium silicate. During the When such grinding wheels burn, the alumina grain of the abrasive remains in chemical and physical relationship unchanged. At the interface between Alumina grain and soapstone, etc., however, form an extremely hard and tough one Magnesium alumina silicate, which is an excellent abrasive in itself is as well as ensures that the embedding of the abrasive clay grains in the binder this transition layer makes it so secure and permanent that it can break out of the alumina grain is no longer possible and the abrasion of the grinding wheels as a result is decreased. The success of this procedure is very great and the advance over corundum disks bonded with clay is very significant. The grinding levels as a whole, as well as in their individual components, are tougher, stronger and have a greater grinding effect. By choosing the grain size and the mixture the individual grain sizes with each other and their alternating offset with soapstone, other magnesium silicates and other suitable additional fluxes as well as each according to the burning height and duration of the chemical reaction possibility caused by this one can consider the composition of the resulting products for reasons of expediency influence accordingly. In the same way as soapstone and other magnesium silicates On its own and with the addition of other fluxes, magnesium-calcium-silicates can also be used at this point as well as calcium silicates per se and other alkaline earth compounds used in the same VGeise act, i.e. on the surface of the abrasive grain with the same one enter into a chemical bond and thereby make the abrasive grain more secure in the binder embed.

Claims (1)

PATE INTT-ANSPRUCH: Schleifwerkzeug, gekennzeichnet durch die chemische Bindung zwischen Tonerdekorn und Erdalkaliverbindungen. PATE INTT CLAIM: Grinding tool characterized by the chemical bond between alumina grain and alkaline earth compounds.
DED44442D 1923-11-02 1923-11-02 Grinding tool Expired DE415764C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED44442D DE415764C (en) 1923-11-02 1923-11-02 Grinding tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED44442D DE415764C (en) 1923-11-02 1923-11-02 Grinding tool

Publications (1)

Publication Number Publication Date
DE415764C true DE415764C (en) 1925-06-30

Family

ID=7048320

Family Applications (1)

Application Number Title Priority Date Filing Date
DED44442D Expired DE415764C (en) 1923-11-02 1923-11-02 Grinding tool

Country Status (1)

Country Link
DE (1) DE415764C (en)

Similar Documents

Publication Publication Date Title
DE858378C (en) Grinding tool
DE1905685B2 (en) Process for making a resin bonded abrasive article
DE415764C (en) Grinding tool
DE365273C (en) Zirconium oxide abrasive or polishing agent
AT158208B (en) Process for the production of temperature change resistant magnesite bricks.
DE382665C (en) Abrasives
DE629087C (en) Manufacture of abrasives containing alumina
DE385282C (en) Anti-slip tile
DE676595C (en) Process for the production of molds, in particular for the production of porcelain objects, e.g. B. fillings, mantle crowns u. like
DE619899C (en) Process for the production of ceramic products for road surfaces and the like like
AT130246B (en) Process for the production of artificial marble.
DE654369C (en) Process for the production of porous, refractory moldings
DE602248C (en) Process for the production of a porous artificial stone material consisting of calcium hydrosilicate
DE411116C (en) Polishes
DE470422C (en) Process for the production of refractory masses, in particular for lining rotary furnaces, shaft furnaces, boiler furnaces and the like. Like., from molten cement with additives
DE629177C (en) Process for the production of abrasive grains
DE447391C (en) Method of making an abrasive
CH191628A (en) Process for the production of diamond-containing grinding tools and grinding tool produced by this process.
DE506306C (en) Process for the production of a cleaning compound or soap containing kieselguhr
DE388359C (en) Process for the production of emery and emery stone from garbage or commercial waste
DE814865C (en) Process for the production of solid, porous building and insulating moldings
DE628442C (en) Process for the production of hydrosilicate-bound molded bodies
DE738638C (en) Process for the manufacture of refractory products
DE323875C (en) Process for the manufacture of abrasive bodies
DE409679C (en) Artificial grinding compound