EP0008697B1 - Verwendung von Alkalichloroferrat (II,III) als Füllstoff in Schleifscheiben und den Füllstoff enthaltende Schleifscheibe - Google Patents

Verwendung von Alkalichloroferrat (II,III) als Füllstoff in Schleifscheiben und den Füllstoff enthaltende Schleifscheibe Download PDF

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Publication number
EP0008697B1
EP0008697B1 EP79102877A EP79102877A EP0008697B1 EP 0008697 B1 EP0008697 B1 EP 0008697B1 EP 79102877 A EP79102877 A EP 79102877A EP 79102877 A EP79102877 A EP 79102877A EP 0008697 B1 EP0008697 B1 EP 0008697B1
Authority
EP
European Patent Office
Prior art keywords
iii
filler
alkali metal
grinding
chloroferrate
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
EP79102877A
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German (de)
English (en)
French (fr)
Other versions
EP0008697A1 (de
Inventor
Rudolf Dr. Hirschberg
Bernd Dr. Schönfeld
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.)
Honeywell Riedel de Haen AG
Original Assignee
Riedel de Haen 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 Riedel de Haen AG filed Critical Riedel de Haen AG
Priority to AT79102877T priority Critical patent/ATE3140T1/de
Publication of EP0008697A1 publication Critical patent/EP0008697A1/de
Application granted granted Critical
Publication of EP0008697B1 publication Critical patent/EP0008697B1/de
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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
    • B24D3/34—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

Definitions

  • the invention relates to the use of alkali chloroferrate (11, III) as a non-toxic active filler in grinding wheels and the grinding wheel which contains this filler.
  • Grinding wheels e.g. for abrasive cutting, consist of an abrasive, a binder and active fillers.
  • the mode of action of these fillers has not been clarified with sufficient certainty; they may have the task of cooling the contact zone during the grinding process and forming a protective and sliding film between the abrasive grain and the workpiece. This prevents excessive wear on the grinding wheels and achieves good cutting quality.
  • the cut surface shows tarnish colors, while when using an effective filler it has a bare appearance.
  • the invention was therefore based on the object of replacing lead chloride or antimony sulfide as an active filler in grinding wheels with a similarly effective, non-toxic and inexpensive substance.
  • the invention relates to the use of alkali chloroferrate (II, III) of the formula (I) where A is an alkali metal ion or an ammonium ion, x is a number from 1 to 10, y is a number from zero to 1, z is a number from zero to 1 and y and z are not simultaneously zero, as a non-toxic active filler in grinding wheels.
  • alkali chloroferrates (II, III) to be used according to the invention as an active filler for grinding wheels are non-toxic and, in terms of cutting performance, are just as effective as the toxic substances to be replaced. They are also inexpensive to manufacture, e.g. B. by a method in which one or more alkali chlorides or ammonium chloride, anhydrous iron (III) chloride and iron powder are fused together.
  • an alkali chloroferrate (II, III) which is obtained by fusing the aforementioned starting materials in combination with a basic inorganic compound, for. B. zinc oxide, potassium carbonate or sodium sulfide has been prepared.
  • the amount of the basic compound is preferably 2 to 5 percent by weight (based on the total amount of all starting materials).
  • This combination shows a lower acidity than the pure alkali chloroferrate (II, III).
  • the pH of a 5% by weight aqueous slurry of K 2 FeCl 4 .2KCl increases from 3.8 to 5.2 if an additional 5% Zn0 has been melted down; with additional use of 3% K 2 C0 3 , a pH of 4.8 results accordingly.
  • lithium, sodium and potassium ions come into consideration as alkali metal ions.
  • the incorporation of ammonium ions instead of or in addition to alkali metal ions can also be considered.
  • the active filler must be as hygroscopic as possible.
  • the hygroscopicity of the filler according to the invention depends on the type and amount of the alkali content and on the iron (III) content. It decreases in the series lithium, sodium, potassium. Too little alkali and too much iron (III) increase hygroscopicity. Very high alkali content also increases hygroscopicity.
  • the fillers used according to the invention can be used alone or mixed with other fillers for grinding wheels.
  • these fillers for grinding wheels it has surprisingly been found that, compared with the use of lead chloride and antimony sulfide, it is possible to use considerably smaller amounts without the cutting quality suffering.
  • An addition of 10% alkali chloroferrate (11) instead of 20% lead chloride is sufficient. This has the advantageous effect that the blasting speed, i. H. the peripheral speed at which the grinding wheel breaks, the grinding wheel produced with the filler according to the invention can be increased by approximately 10% compared to that produced with lead chloride.
  • disks of the same composition were used for abrasive cutting.
  • rod-shaped workpieces with a cross-section of 100 x 100 mm made of a standard steel alloy «CK 45 normalized», which is standardized for testing purposes were used.
  • a number of cuts were made perpendicular to the longitudinal axis with the respective cutting disc, and the diameter loss of the cutting disc per cut was determined.
  • the specific cutting performance which results from the decrease in the workpiece per time in cm 2 / s
  • the power factor which is the quotient of the decrease in the workpiece and the decrease in the cross section of the cutting disc, each measured in cm 2 , were determined.
  • the power consumption of the grinding machine during the grinding process was recorded and the profile of the cutting disc and the appearance of the cut surface of the workpiece were assessed after the grinding process. The corresponding values are summarized in Table I.
  • the examples designated V1 and V2 in Table I are comparative examples without the use of an active filler or with lead chloride as filler according to the prior art.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Disintegrating Or Milling (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Hydrogenated Pyridines (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
EP79102877A 1978-08-14 1979-08-09 Verwendung von Alkalichloroferrat (II,III) als Füllstoff in Schleifscheiben und den Füllstoff enthaltende Schleifscheibe Expired EP0008697B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79102877T ATE3140T1 (de) 1978-08-14 1979-08-09 Verwendung von alkalichloroferrat (ii,iii) als fuellstoff in schleifscheiben und den fuellstoff enthaltende schleifscheibe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2835543 1978-08-14
DE19782835543 DE2835543A1 (de) 1978-08-14 1978-08-14 Nichttoxischer aktiver fuellstoff in schleifscheiben

Publications (2)

Publication Number Publication Date
EP0008697A1 EP0008697A1 (de) 1980-03-19
EP0008697B1 true EP0008697B1 (de) 1983-04-27

Family

ID=6046987

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79102877A Expired EP0008697B1 (de) 1978-08-14 1979-08-09 Verwendung von Alkalichloroferrat (II,III) als Füllstoff in Schleifscheiben und den Füllstoff enthaltende Schleifscheibe

Country Status (9)

Country Link
US (1) US4263016A (fi)
EP (1) EP0008697B1 (fi)
JP (1) JPS5531589A (fi)
AT (1) ATE3140T1 (fi)
CA (1) CA1133262A (fi)
DE (2) DE2835543A1 (fi)
DK (1) DK337579A (fi)
FI (1) FI63879C (fi)
NO (1) NO792636L (fi)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3112953A1 (de) * 1980-04-01 1982-01-28 Tyrolit-Schleifmittelwerke Swarovski KG, 6130 Schwaz, Tirol Schleifkoerper mit schleifkorn
EP0299950A1 (de) * 1987-07-17 1989-01-18 Chemson Polymer-Additive Gesellschaft M.B.H. Halogenhaltige Füllstoffe für Schleifkörper, Verfahren zur Herstellung dieser Füllstoffe sowie diese enthaltende Schleifkörper
EP0375803A1 (de) * 1988-12-30 1990-07-04 Tyrolit Schleifmittelwerke Swarovski KG Schleifkörper

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3026294A1 (de) * 1980-07-11 1982-02-18 Riedel-De Haen Ag, 3016 Seelze Chlorofluoroferrat (ii, iii), verfahren zu seiner herstellung, seine verwendung und chlorofluoroferrat (ii,iii) enthaltende schleifscheibe
AT372894B (de) * 1981-07-20 1983-11-25 Swarovski Tyrolit Schleif Schleifkoerper
US4475926A (en) * 1982-02-25 1984-10-09 Norton Company Active filler for grinding wheels
US5110321A (en) * 1990-02-13 1992-05-05 Minnesota Mining And Manufacturing Company Abrasives containing ammonium fluoride-based grinding aid
US5219463A (en) * 1990-02-13 1993-06-15 Minnesota Mining And Manufacturing Company Abrasives containing ammonium fluoride-based grinding aid
US5110320A (en) * 1990-02-13 1992-05-05 Minnesota Mining And Manufacturing Company Abrasive products bonded with color stabilized base catalyzed phenolic resin
US5232468A (en) * 1990-02-13 1993-08-03 Minnesota Mining And Manufacturing Company Abrasive products bonded with color stabilized base catalyzed phenolic resin
US5061295A (en) * 1990-10-22 1991-10-29 Norton Company Grinding wheel abrasive composition
JPH0710500B2 (ja) * 1990-11-24 1995-02-08 ノリタケダイヤ株式会社 石材研磨加工用レジンポリッシャー

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1984423A (en) * 1927-07-23 1934-12-18 John Stogdell Stokes Phenolic condensation product and method of making the same
US2216135A (en) * 1937-05-21 1940-10-01 Us Rubber Co Manufacture of abrasive articles
US2258774A (en) * 1939-01-24 1941-10-14 Raybestos Manhattan Inc Manufacture of abrasive products
US2408319A (en) * 1946-01-24 1946-09-24 Norton Co Abrasive articles
US2780534A (en) * 1953-11-27 1957-02-05 Raybestos Manhattan Inc Manufacture of abrasive products
US2940841A (en) * 1957-03-11 1960-06-14 Abrasive & Metal Products Co Abrasives
US2949351A (en) * 1958-01-02 1960-08-16 Jr Louis E Vigliatura Heat-resistant abrasive wheels
GB891046A (en) * 1959-12-11 1962-03-07 Carborundum Co Improvements in compositions relating to abrasive articles
US3269813A (en) * 1963-06-18 1966-08-30 Cincinnati Milling Machine Co Abrasive article containing zirconium tetrafluoride filler
US3246970A (en) * 1963-07-24 1966-04-19 Carborundum Co Abrasive articles with iron sulfide and potassium aluminum fluoride filler
US3592618A (en) * 1969-03-10 1971-07-13 Avco Corp Abrasive article having a metal filler and an active filler
DE2110611A1 (de) * 1971-03-05 1972-09-14 Wendell E Dun Inc Verfahren zur Herstellung wasserfreier Chloroferrat-Komplexe aus Ferrichlorid in waessrigem System

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3112953A1 (de) * 1980-04-01 1982-01-28 Tyrolit-Schleifmittelwerke Swarovski KG, 6130 Schwaz, Tirol Schleifkoerper mit schleifkorn
EP0299950A1 (de) * 1987-07-17 1989-01-18 Chemson Polymer-Additive Gesellschaft M.B.H. Halogenhaltige Füllstoffe für Schleifkörper, Verfahren zur Herstellung dieser Füllstoffe sowie diese enthaltende Schleifkörper
EP0375803A1 (de) * 1988-12-30 1990-07-04 Tyrolit Schleifmittelwerke Swarovski KG Schleifkörper
EP0379633A2 (de) * 1988-12-30 1990-08-01 Tyrolit Schleifmittelwerke Swarovski KG Schleifmittel
EP0379633A3 (de) * 1988-12-30 1990-09-26 Tyrolit Schleifmittelwerke Swarovski KG Schleifmittel

Also Published As

Publication number Publication date
FI792499A (fi) 1980-02-15
JPS5531589A (en) 1980-03-05
ATE3140T1 (de) 1983-05-15
EP0008697A1 (de) 1980-03-19
FI63879B (fi) 1983-05-31
US4263016A (en) 1981-04-21
JPS6254628B2 (fi) 1987-11-16
NO792636L (no) 1980-02-15
DK337579A (da) 1980-02-15
DE2965285D1 (en) 1983-06-01
CA1133262A (en) 1982-10-12
DE2835543A1 (de) 1980-02-28
FI63879C (fi) 1983-09-12

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