EP0008697A1 - Utilisation d'alcali-chloroferrate (II,III) comme charge pour meules abrasives et meule abrasive contenant cette charge - Google Patents

Utilisation d'alcali-chloroferrate (II,III) comme charge pour meules abrasives et meule abrasive contenant cette charge Download PDF

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Publication number
EP0008697A1
EP0008697A1 EP79102877A EP79102877A EP0008697A1 EP 0008697 A1 EP0008697 A1 EP 0008697A1 EP 79102877 A EP79102877 A EP 79102877A EP 79102877 A EP79102877 A EP 79102877A EP 0008697 A1 EP0008697 A1 EP 0008697A1
Authority
EP
European Patent Office
Prior art keywords
filler
grinding
alkali
iii
alkali metal
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.)
Granted
Application number
EP79102877A
Other languages
German (de)
English (en)
Other versions
EP0008697B1 (fr
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/fr
Application granted granted Critical
Publication of EP0008697B1 publication Critical patent/EP0008697B1/fr
Expired legal-status Critical Current

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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 a non-toxic active filler for grinding wheels, the use of this F üll- substance and the grinding wheel that contains this filler.
  • Grinding wheels e.g. for abrasive cutting, consist of an abrasive, a binder and active fillers.
  • the mode of operation of these filler pins is not sufficiently clear, 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 of 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.
  • oxidizing substances such as potassium permanganate or sodium bichromate, or low-melting metals such as zinc, cadmium, tin, lead, antimony and bismuth can also be used (cf. US Pat. Nos. 1,984,423 and 2,258,774).
  • lead chloride (PbCl 2 ) and antimony sulfide (Sb 2 S 3 ) have become established in technology, in particular for use in cutting discs, optionally in a mixture with other auxiliaries.
  • 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.
  • alkali chloroferrates (II, III) of the general 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.
  • alkali metal chloroferrates (II) of the general formula I ## STR1 ## in which A is an alkali metal ion, x is a number from 1 to 6, y is 1 and z is zero, in amounts of 3 to 15, preferably 4 to 10,% by weight % (based on the weight of the entire grinding wheel).
  • 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 produce, for example by a process in which one or more alkali metal chlorides or Ammonium chloride, anhydrous iron (III) chloride and iron powder are melted together.
  • an alkali chloroferrate (II, III) which is obtained by fusing the above-mentioned starting materials in combination with a basic inorganic compound, eg. B. zinc oxide, potassium carbonate or sodium sulfide has been produced.
  • 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% ZnO has been melted down; with the additional use of 3% K 2 CO 3 , the pH value is 4.8.
  • 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 In industrial applications, the active filler must have the smallest possible hygroscopicity.
  • 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 according to the invention can be used alone or mixed with other fillers for grinding wheels.
  • 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 wheel, 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.
  • V 1 and V 2 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)
  • Hydrogenated Pyridines (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Disintegrating Or Milling (AREA)
EP79102877A 1978-08-14 1979-08-09 Utilisation d'alcali-chloroferrate (II,III) comme charge pour meules abrasives et meule abrasive contenant cette charge Expired EP0008697B1 (fr)

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 true EP0008697A1 (fr) 1980-03-19
EP0008697B1 EP0008697B1 (fr) 1983-04-27

Family

ID=6046987

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79102877A Expired EP0008697B1 (fr) 1978-08-14 1979-08-09 Utilisation d'alcali-chloroferrate (II,III) comme charge pour meules abrasives et meule abrasive contenant cette charge

Country Status (9)

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

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT365552B (de) * 1980-04-01 1982-01-25 Swarovski Tyrolit Schleif Schleifkoerper mit schleifkorn, beispielsweise korund
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
AT394961B (de) * 1987-07-17 1992-08-10 Bbu Chemie Gmbh Halogenhaltige fuellstoffe fuer schleifkoerper, verfahren zur herstellung dieser fuellstoffe sowie diese enthaltende schleifkoerper
EP0375803A1 (fr) * 1988-12-30 1990-07-04 Tyrolit Schleifmittelwerke Swarovski KG Corps abrasif
US5110320A (en) * 1990-02-13 1992-05-05 Minnesota Mining And Manufacturing Company Abrasive products bonded with color stabilized base catalyzed phenolic resin
US5110321A (en) * 1990-02-13 1992-05-05 Minnesota Mining And Manufacturing Company Abrasives containing ammonium fluoride-based grinding aid
US5232468A (en) * 1990-02-13 1993-08-03 Minnesota Mining And Manufacturing Company Abrasive products bonded with color stabilized base catalyzed phenolic resin
US5219463A (en) * 1990-02-13 1993-06-15 Minnesota Mining And Manufacturing Company Abrasives containing ammonium fluoride-based grinding aid
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

Citations (8)

* 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
US2780534A (en) * 1953-11-27 1957-02-05 Raybestos Manhattan Inc Manufacture of abrasive products
US2949351A (en) * 1958-01-02 1960-08-16 Jr Louis E Vigliatura Heat-resistant abrasive wheels
US3246970A (en) * 1963-07-24 1966-04-19 Carborundum Co Abrasive articles with iron sulfide and potassium aluminum fluoride filler
US3269813A (en) * 1963-06-18 1966-08-30 Cincinnati Milling Machine Co Abrasive article containing zirconium tetrafluoride filler
DE2110611A1 (de) * 1971-03-05 1972-09-14 Wendell E Dun Inc Verfahren zur Herstellung wasserfreier Chloroferrat-Komplexe aus Ferrichlorid in waessrigem System

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2408319A (en) * 1946-01-24 1946-09-24 Norton Co Abrasive articles
US2940841A (en) * 1957-03-11 1960-06-14 Abrasive & Metal Products Co Abrasives
GB891046A (en) * 1959-12-11 1962-03-07 Carborundum Co Improvements in compositions relating to abrasive articles
US3592618A (en) * 1969-03-10 1971-07-13 Avco Corp Abrasive article having a metal filler and an active filler

Patent Citations (8)

* 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
US2780534A (en) * 1953-11-27 1957-02-05 Raybestos Manhattan Inc Manufacture of abrasive products
US2949351A (en) * 1958-01-02 1960-08-16 Jr Louis E Vigliatura Heat-resistant abrasive wheels
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
DE2110611A1 (de) * 1971-03-05 1972-09-14 Wendell E Dun Inc Verfahren zur Herstellung wasserfreier Chloroferrat-Komplexe aus Ferrichlorid in waessrigem System

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
STAHL UND EISEN, Band 94, Nr. 8, April 1974, Düsseldorf, W. SCHIFFGEN "Trennschleifen von Stahl unter besonderer Berücksichtigung von Edelstählen", Seiten 326 bis 335. *

Also Published As

Publication number Publication date
DE2965285D1 (en) 1983-06-01
US4263016A (en) 1981-04-21
EP0008697B1 (fr) 1983-04-27
ATE3140T1 (de) 1983-05-15
FI63879B (fi) 1983-05-31
CA1133262A (fr) 1982-10-12
JPS5531589A (en) 1980-03-05
DK337579A (da) 1980-02-15
NO792636L (no) 1980-02-15
FI792499A (fi) 1980-02-15
JPS6254628B2 (fr) 1987-11-16
DE2835543A1 (de) 1980-02-28
FI63879C (fi) 1983-09-12

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