EP0008697B1 - 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 PDFInfo
- 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
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
- B24D3/34—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)
- Hydrogenated Pyridines (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Disintegrating Or Milling (AREA)
Claims (4)
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 (fr) | 1980-03-19 |
EP0008697B1 true 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) |
Cited By (3)
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 (fr) * | 1987-07-17 | 1989-01-18 | Chemson Polymer-Additive Gesellschaft M.B.H. | Charges contenant des halogènes pour corps abrasifs, procédé pour la préparation de ces charges et corps abrasifs les contenant |
EP0375803A1 (fr) * | 1988-12-30 | 1990-07-04 | Tyrolit Schleifmittelwerke Swarovski KG | Corps abrasif |
Families Citing this family (9)
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 |
US5232468A (en) * | 1990-02-13 | 1993-08-03 | Minnesota Mining And Manufacturing Company | Abrasive products bonded with color stabilized base catalyzed phenolic resin |
US5110320A (en) * | 1990-02-13 | 1992-05-05 | 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 |
US5110321A (en) * | 1990-02-13 | 1992-05-05 | 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 |
Family Cites Families (12)
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 |
-
1978
- 1978-08-14 DE DE19782835543 patent/DE2835543A1/de not_active Withdrawn
-
1979
- 1979-08-09 AT AT79102877T patent/ATE3140T1/de not_active IP Right Cessation
- 1979-08-09 EP EP79102877A patent/EP0008697B1/fr not_active Expired
- 1979-08-09 DE DE7979102877T patent/DE2965285D1/de not_active Expired
- 1979-08-10 FI FI792499A patent/FI63879C/fi not_active IP Right Cessation
- 1979-08-13 US US06/066,235 patent/US4263016A/en not_active Expired - Lifetime
- 1979-08-13 NO NO792636A patent/NO792636L/no unknown
- 1979-08-13 CA CA333,665A patent/CA1133262A/fr not_active Expired
- 1979-08-13 DK DK337579A patent/DK337579A/da not_active Application Discontinuation
- 1979-08-13 JP JP10231079A patent/JPS5531589A/ja active Granted
Cited By (5)
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 (fr) * | 1987-07-17 | 1989-01-18 | Chemson Polymer-Additive Gesellschaft M.B.H. | Charges contenant des halogènes pour corps abrasifs, procédé pour la préparation de ces charges et corps abrasifs les contenant |
EP0375803A1 (fr) * | 1988-12-30 | 1990-07-04 | Tyrolit Schleifmittelwerke Swarovski KG | Corps abrasif |
EP0379633A2 (fr) * | 1988-12-30 | 1990-08-01 | Tyrolit Schleifmittelwerke Swarovski KG | Corps abrasif |
EP0379633A3 (fr) * | 1988-12-30 | 1990-09-26 | Tyrolit Schleifmittelwerke Swarovski KG | Corps abrasif |
Also Published As
Publication number | Publication date |
---|---|
EP0008697A1 (fr) | 1980-03-19 |
US4263016A (en) | 1981-04-21 |
JPS5531589A (en) | 1980-03-05 |
DE2835543A1 (de) | 1980-02-28 |
FI792499A (fi) | 1980-02-15 |
JPS6254628B2 (fr) | 1987-11-16 |
FI63879C (fi) | 1983-09-12 |
CA1133262A (fr) | 1982-10-12 |
DK337579A (da) | 1980-02-15 |
DE2965285D1 (en) | 1983-06-01 |
NO792636L (no) | 1980-02-15 |
ATE3140T1 (de) | 1983-05-15 |
FI63879B (fi) | 1983-05-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0008697B1 (fr) | Utilisation d'alcali-chloroferrate (II,III) comme charge pour meules abrasives et meule abrasive contenant cette charge | |
CH634246A5 (en) | Grinding or abrasive material and process for the production thereof | |
EP2551057B1 (fr) | Procédé de fabrication d'un agent abrasif stratifié, agent abrasif stratifié et utilisation d'un agent abrasif stratifié | |
EP0299950B1 (fr) | Charges contenant des halogènes pour corps abrasifs, procédé pour la préparation de ces charges et corps abrasifs les contenant | |
DE2351274B2 (de) | Waesseriges kuehlschmiermittel | |
CH148203A (de) | Verfahren zum Schweissen und Schmelzen von Metallen mittelst des elektrischen Lichtbogens. | |
EP0044028B1 (fr) | Chlorofluoroferrate (II, III), procédé pour sa fabrication, son utilisation et meule contenant du chlorofluoroferrate | |
DE2624762C2 (fr) | ||
DE1558892B2 (de) | Flußmittel | |
DE509024C (de) | Schweissmittel fuer Magnesiumlegierungen | |
DE971879C (de) | Metallichtbogen-Hobel-Elektrode zum Ausnuten, Abschraegen, Abrichten usw. von metallischen Werkstuecken | |
DE2124935A1 (en) | Electrolyte for electro-chemical metal working - partic of titanium (alloy) | |
DE1496396C (de) | Verfahren zum Schmelzen von Glas, das leicht fluchtige Bestandteile ent halt | |
CH621535A5 (fr) | ||
EP0375803A1 (fr) | Corps abrasif | |
DE690852C (de) | Schichten mit hoher Sekundaerelektronenemission und Verfahren zu deren Herstellung | |
DE3441596A1 (de) | Aktiver fuellstoff fuer schleifscheiben | |
DE1160085B (de) | Aus Kohlenstoff bestehende Buerste zur Herstellung eines elektrischen Kontaktes | |
DE629073C (de) | Verfahren zur Herstellung von UEberzeugen auf der Oberflaeche von Blei, Zinn, Kupferund deren Legierungen | |
DE928320C (de) | Verfahren zum Erschmelzen von farblosem Glas | |
DE695572C (de) | ramische Fritten | |
AT123796B (de) | Kalium- und Lithiumhalogensalze enthaltendes Schweißmittel für Magnesium und Magnesiumlegierungen. | |
DE675353C (de) | Stabilisierung von Salpeterbaedern | |
AT67001B (de) | Zündmasse für an jeder Reibfläche entzündbare giftfreie Zündhölzer. | |
DE1934999A1 (de) | Elektrolyt zur elektrolytischen Metallabtragung |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LU NL SE |
|
17P | Request for examination filed | ||
ITF | It: translation for a ep patent filed |
Owner name: ING. C. GREGORJ S.P.A. |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR GB IT LU NL SE |
|
REF | Corresponds to: |
Ref document number: 3140 Country of ref document: AT Date of ref document: 19830515 Kind code of ref document: T |
|
REF | Corresponds to: |
Ref document number: 2965285 Country of ref document: DE Date of ref document: 19830601 |
|
ET | Fr: translation filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: LU Payment date: 19830726 Year of fee payment: 5 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19830831 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 19840718 Year of fee payment: 6 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 19840930 Year of fee payment: 6 Ref country code: BE Payment date: 19840930 Year of fee payment: 6 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19870831 Year of fee payment: 9 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19880810 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Effective date: 19880831 Ref country code: BE Effective date: 19880831 |
|
BERE | Be: lapsed |
Owner name: RIEDEL-DE HAEN A.G. Effective date: 19880831 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Effective date: 19890301 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee | ||
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19890630 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19890706 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19890731 Year of fee payment: 11 |
|
ITTA | It: last paid annual fee | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19890919 Year of fee payment: 11 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19900809 Ref country code: AT Effective date: 19900809 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19910430 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19910501 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
EUG | Se: european patent has lapsed |
Ref document number: 79102877.2 Effective date: 19890510 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |