DE1119309B - Steel for grinding bodies, grinding rods and mill armor - Google Patents

Steel for grinding bodies, grinding rods and mill armor

Info

Publication number
DE1119309B
DE1119309B DEH35232A DEH0035232A DE1119309B DE 1119309 B DE1119309 B DE 1119309B DE H35232 A DEH35232 A DE H35232A DE H0035232 A DEH0035232 A DE H0035232A DE 1119309 B DE1119309 B DE 1119309B
Authority
DE
Germany
Prior art keywords
grinding
max
steel
chromium
manganese
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.)
Pending
Application number
DEH35232A
Other languages
German (de)
Inventor
Dipl-Ing Heinz Habig
Dr-Ing Hubert Hoff
Dipl-Ing Gerhard Labisch
Dr-Ing Paul Werthebach
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.)
SCHMIEDAG AG
Hoesch AG
Original Assignee
SCHMIEDAG AG
Hoesch 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
Priority to DEH34017A priority Critical patent/DE1113950B/en
Application filed by SCHMIEDAG AG, Hoesch AG filed Critical SCHMIEDAG AG
Priority to DEH35233A priority patent/DE1119310B/en
Priority to DEH35232A priority patent/DE1119309B/en
Publication of DE1119309B publication Critical patent/DE1119309B/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B17/00—Special adaptations of machines or devices for grinding controlled by patterns, drawings, magnetic tapes or the like; Accessories therefor
    • B24B17/08—Special adaptations of machines or devices for grinding controlled by patterns, drawings, magnetic tapes or the like; Accessories therefor involving fluid transmission means only
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crushing And Grinding (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Description

Stahl für Mahlkörper, Mahlstäbe und Mühlenpanzerungen Zusatz zur Patentanmeldung H 34017 VI a/ 18 d (Auslegeschrift 1113 950) Gegenstand der Patentanmeldung H 34017 VI a / 18d ist die Verwendung eines an sich bekannten Stahles mit 0,7 bis 1,1% Kohlenstoff, 0,8 bis 2,0% Chrom, 0,8 bis 1,5% Mangan, 0,2 bis 0,6% Molybdän, 0,3 bis 1,0% Silizium, max.0,04% Phosphor, max.0,03% Schwefel, Rest Eisen als Werkstoff für Mahlkörper zum Zerkleinern von Erzen, Gesteinen, Kohle, Schlacken und Zementen. Insonderheit kommen in Frage 0,9 bis 1,0% Kohlenstoff, 0,8 bis 2,0% Chrom, 1;0 bis 1,2% Mangan, 0,45 bis 0,55 % Molybdän, 0,6 bis 0,8% Silizium, max. 0,025 % Phosphor, max. 0,025% Schwefel, Rest Eisen und in diesen Analysengrenzen insbesondere 0,9 bis 1,1% Kohlenstoff, 1,6 bis 1,9% Chrom, 1,0 bis 1,2% Mangan, 0,45 bis 0,5501o Molybdän, 6,0 bis 0,8 % Silizium, max. 0,025 % Phosphor, max. 0,025 % Schwefel, Rest Eisen.Steel for grinding media, grinding rods and mill armouring Addendum to patent application H 34017 VI a / 18 d (Auslegeschrift 1113 950) The subject of patent application H 34017 VI a / 18d is the use of a steel known per se with 0.7 to 1.1% carbon, 0.8 to 2.0% chromium, 0.8 to 1.5% manganese, 0.2 to 0.6% molybdenum, 0.3 to 1.0% silicon, max 0.04% phosphorus, max. 0.03% sulfur, the remainder iron as a material for grinding media for crushing ores, rocks, coal, slag and cements. In particular, 0.9 to 1.0% carbon, 0.8 to 2.0% chromium, 1; 0 to 1.2% manganese, 0.45 to 0.55% molybdenum, 0.6 to 0, 8% silicon, max.0.025% phosphorus, max.0.025% sulfur, the remainder iron and, within these analytical limits, in particular 0.9 to 1.1% carbon, 1.6 to 1.9% chromium, 1.0 to 1.2 % Manganese, 0.45 to 0.55010 molybdenum, 6.0 to 0.8% silicon, max. 0.025% phosphorus, max. 0.025% sulfur, remainder iron.

Aus einem solchen Stahl werden Mahlkörper in der Weise hergestellt, daß der Stahl zu Knüppeln und Stäben in solch vorsichtiger Weise ausgewalzt wird, daß jede Flockenbildung vermieden wird. Die Mahlkörper selbst werden aus Rohlingen nach der Unterteilung der Knüppel oder Stäbe in solche bei den üblichen Temperaturen in bekannter Weise ausgeschmiedet oder als sogenannte »Cylpebs« ohne weiteres Ausschmieden erhalten.Grinding media are made from such steel in such a way that that the steel is rolled into billets and bars in such a careful manner, that any flocculation is avoided. The grinding media themselves are made from blanks after dividing the billets or rods into those at the usual temperatures forged out in a known manner or as so-called "Cylpebs" without further forging obtain.

Nach dem Ausschmieden erfolgt eine an sich -bekannte Wärmebehandlung mit der üblichen Vorsicht beim Abkühlen, damit die Mahlkörper eine über den ganzen Querschnitt gleichbleibende Festigkeit von 200 bis 600 kg/mm2 oder Vickershärte von 600 bis 700 Einheiten erhalten. Hierbei ergibt sich ein Gefüge aus reinem Martensit sowohl für die Randteile der Kugeln als auch für den Kern. Die so hergestellten Mahlkörper zeigen keinen nennenswerten Verschleiß in der Mühle.After the forging, a heat treatment known per se takes place with the usual caution when cooling to keep the grinding media one over the whole Cross-section constant strength of 200 to 600 kg / mm2 or Vickers hardness from 600 to 700 units received. This results in a structure made of pure martensite both for the edge parts of the balls and for the core. The so produced Grinding media show no noticeable wear in the mill.

Mahlkörper unterliegen in erster Linie einer Reiboxydation, die beim Zermalmen der Mineralien auftritt und zur Bildung von Silikaten u. dgl. führt.Grinding media are primarily subject to friction oxidation, which occurs when Crushing of the minerals occurs and leads to the formation of silicates and the like.

Es hat sich nun überraschenderweise herausgestellt, daß für Mahlkörper vorgeschlagene Stähle eine besonders große Widerstandsfähigkeit gegen eine solche Reiboxydation aufweisen.It has now surprisingly been found that for grinding media proposed steels have a particularly great resistance to such Have friction oxidation.

Die Erfindung betrifft einen Zusatz zu dieser Stammanmeldung und schlägt den Ersatz des Molybdäns durch Vanadin vor. Sie betrifft die Verwendung eines an sich bekannten Stahles mit 0,7 bis 1,1% Kohlenstoff, 0,8 bis 2,0% Chrom, 0,8 bis 1,5% Mangan, 0,1 bis 0,5 % Vanadin, 0,3 bis 1,0 % Silizium, max. 0,040% Phosphor, max. 0,03 % Schwefel, Rest Eisen als Werkstoff für Mahlkörper, Mahlstäbe und Mühlenpanzerungen zum Zerkleinern von Erzen, Gesteinen, Kohle, Schlacken und Zementen.The invention relates to an addition to this parent application and proposes the replacement of molybdenum by vanadium before. It concerns the use a known steel with 0.7 to 1.1% carbon, 0.8 to 2.0% chromium, 0.8 to 1.5% manganese, 0.1 to 0.5% vanadium, 0.3 to 1.0% silicon, max.0.040% Phosphorus, max. 0.03% sulfur, the remainder iron as material for grinding media, grinding rods and mill armor for crushing ores, rocks, coal, slag and Cements.

In Sonderheit kommen Stähle mit 0,9 bis 1,0 % Kohlenstoff, 0,8 bis 2,0% Chrom, 1 bis 1,2% Mangan, 0,35 bis 0,40% Vanadin, 0,6 bis 0,8 % Silizium, max. 0,025 % Phosphor, max. 0,0250% Schwefel, Rest Eisen in Frage. Das Chrom kann bis zur oberen Analysengrenze teilweise oder ganz durch Mangan, Nickel oder Mangan plus Nickel in beliebigen Mengenverhältnissen ersetzt sein. Ebenso kann den Stählen noch 0,1% Bor zulegiert sein.Steels with 0.9 to 1.0% carbon and 0.8 to 2.0% chromium, 1 to 1.2% manganese, 0.35 to 0.40% vanadium, 0.6 to 0.8% silicon, max. 0.025% phosphorus, max. 0.0250% sulfur, the remainder iron in question. The chrome can go up to the upper analysis limit partially or completely by manganese, nickel or manganese plus Nickel can be replaced in any proportions. The same can be done with steels 0.1% boron should be added.

Die Herstellung der Mahlkörper und die Wärmebehandlung ist die gleiche wie gemäß dem Stammpatent. Auch diese Mahlkörper haben über den gesamten Querschnitt gleichbleibende Härte- und Martensitgefüge sowohl für die Randteile der Kugeln als auch für den Kern.The manufacture of the grinding media and the heat treatment are the same as according to the parent patent. These grinding media also have the entire cross section constant hardness and martensite structure both for the edge parts of the balls as also for the core.

Die Formgestaltung der Mahlkörper spielt keine Ralle. Im allgemeinen wird die Kugelform benutzt. Man kann aber auch Kugeln mit angeschlagenen Flächen verwenden, um die Mahlleistung zu steigern. Ebenso eignen sich die Mahlkörper für das Vermahlen von sonstigen zu pulverisierenden Körpern, wie chemischen Produkten, Kunstharzen, organischen Substanzen u. dgl., obwohl es sich an sich erübrigt, für solche Zwecke solche hochwertigen Mahlkörper zu nehmen, wie sie dem Gegenstand der Erfindung entsprechen.The shape of the grinding media is irrelevant. In general the spherical shape is used. But you can also use balls with chipped surfaces use to increase grinding performance. The grinding media are also suitable for the grinding of other bodies to be pulverized, such as chemical products, Synthetic resins, organic substances and the like, although it is unnecessary per se, for such purposes to use such high-quality grinding media as are the subject of Invention correspond.

Claims (4)

PATENTANSPRÜCHE: 1. Die Verwendung eines an sich bekannten Stahles mit 0,7 bis 1,1% Kohlenstoff, 0,8 bis 2,0% Chrom, 0,8 bis 1,5% Mangan, 0,1 bis 0,5% Vanadin, 0,3 bis 1,0% Silizium, max. 0,04% Phosphor, max. 0,03 % Schwefel, Rest Eisen als Werkstoff für Mahlkörper, Mahlstäbe und Mühlenpanzerungen zum Zerkleinern von Erzen, Gesteinen, Kohle, Schlacken und Zemente (Zusatz zur Patentanmeldung H 34017 VI a / 18 d). PATENT CLAIMS: 1. The use of a steel known per se with 0.7 to 1.1% carbon, 0.8 to 2.0% chromium, 0.8 to 1.5% manganese, 0.1 to 0.5% Vanadium, 0.3 to 1.0% silicon, max. 0.04% phosphorus, max. 0.03% sulfur, remainder Iron as a material for grinding media, grinding rods and mill armor for crushing of ores, rocks, coal, slag and cement (addendum to patent application H. 34017 VI a / 18 d). 2. Die Verwendung eines Stahles gemäß Anspruch 1 mit 0,9 bis 1,0% Kohlenstoff, 0,8 bis 2,0% Chrom, 1 bis 1,2 % Mangan, 0,35 bis 0,40% Vanadin, 0,6 bis 0,8 % Silizium, max. 0,025% Phosphor, max. 0,025% Schwefel, Rest Eisen für den Zweck nach Anspruch 1. 2. The use of a steel according to claim 1 with 0.9 to 1.0% carbon, 0.8 to 2.0% chromium, 1 to 1.2% manganese, 0.35 to 0.40% vanadium, 0.6 to 0.8% silicon, max. 0.025% phosphorus, max. 0.025% sulfur, the remainder iron for the purpose of claim 1. 3. Die Verwendung eines Stahles gemäß den Ansprüchen 1 und 2 für den Zweck nach Anspruch 1, dadurch gekennzeichnet, daß das Chrom bis zur oberen Analysengrenze teilweise oder ganz durch Mn, Ni oder Mn plus Ni in beliebigen Mengenverhältnissen ersetzt ist. 3. The use of a steel according to the claims 1 and 2 for the purpose of claim 1, characterized in that the chromium is up to to the upper analysis limit partially or completely by Mn, Ni or Mn plus Ni in any Quantitative proportions is replaced. 4. Die Verwendung eines Stahles gemäß den Ansprüchen 1 bis 3 für den Zweck nach Anspruch 1, dadurch gekennzeichnet, daß ihm bis zu 0,101o Bor zulegiert ist. In Betracht gezogene Druckschriften: Deutsche Patentschrift Nr. 896 658; schweizerische Patentschrift Nr. 169 407; französische Patentschrift Nr. 462 087; USA.-Patentschrift Nr. 2104 694.4. The use of a steel according to the claims 1 to 3 for the purpose of claim 1, characterized in that it is up to 0.101o Boron is added. Publications considered: German Patent No. 896 658; Swiss Patent No. 169 407; French patent specification no. 462 087; U.S. Patent No. 2104,694.
DEH35232A 1958-08-06 1958-12-27 Steel for grinding bodies, grinding rods and mill armor Pending DE1119309B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DEH34017A DE1113950B (en) 1958-08-06 1958-08-06 Steel for grinding bodies
DEH35233A DE1119310B (en) 1958-08-06 1958-12-27 Steel for grinding bodies, grinding rods and mill armor
DEH35232A DE1119309B (en) 1958-08-06 1958-12-27 Steel for grinding bodies, grinding rods and mill armor

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEH34017A DE1113950B (en) 1958-08-06 1958-08-06 Steel for grinding bodies
DEH35233A DE1119310B (en) 1958-08-06 1958-12-27 Steel for grinding bodies, grinding rods and mill armor
DEH35232A DE1119309B (en) 1958-08-06 1958-12-27 Steel for grinding bodies, grinding rods and mill armor

Publications (1)

Publication Number Publication Date
DE1119309B true DE1119309B (en) 1961-12-14

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ID=62597242

Family Applications (3)

Application Number Title Priority Date Filing Date
DEH34017A Pending DE1113950B (en) 1958-08-06 1958-08-06 Steel for grinding bodies
DEH35232A Pending DE1119309B (en) 1958-08-06 1958-12-27 Steel for grinding bodies, grinding rods and mill armor
DEH35233A Pending DE1119310B (en) 1958-08-06 1958-12-27 Steel for grinding bodies, grinding rods and mill armor

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DEH34017A Pending DE1113950B (en) 1958-08-06 1958-08-06 Steel for grinding bodies

Family Applications After (1)

Application Number Title Priority Date Filing Date
DEH35233A Pending DE1119310B (en) 1958-08-06 1958-12-27 Steel for grinding bodies, grinding rods and mill armor

Country Status (1)

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DE (3) DE1113950B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1213124B (en) * 1964-08-13 1966-03-24 Koenen & Regel Edelstahlgiesse Wear and impact-resistant iron-carbon alloy
DE1214004B (en) * 1964-08-13 1966-04-07 Koenen & Regel Edelstahlgiesse Wear- and impact-resistant high-alloy iron-carbon cast alloy

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2430796A1 (en) * 1978-07-11 1980-02-08 Thome Cromback Acieries FORGED GRINDING BODIES OF STEEL AND THEIR MANUFACTURING METHOD
JPS60230961A (en) * 1984-04-28 1985-11-16 Nippon Steel Corp Disk material for disk brake

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR462087A (en) * 1912-11-13 1914-01-19 Des Acieries & Forges De Firminy Metal shield
CH169407A (en) * 1932-03-09 1934-05-31 Ver Stahlwerke Ag Process for the production of objects where high wear resistance is important, especially wheel tires.
US2104694A (en) * 1937-03-12 1938-01-04 Vulcan Alloy Corp Weldrod
DE896658C (en) * 1949-10-14 1953-11-12 American Wheelabrator & Equipm Steel for steel shot for metalworking

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE316149C (en) *
DE299192C (en) *
CH169416A (en) * 1932-03-09 1934-05-31 Ver Stahlwerke Ag Process for the production of objects whose surface is wear-resistant and whose core is tough.
CH175080A (en) * 1932-07-01 1935-02-15 Leon Delachaux Clarence Welding process of steel parts in general, and particularly of cast or rolled metal parts.
GB457872A (en) * 1934-03-14 1936-12-02 Child Harold Wills Improvements in or relating to molybdenum alloy steels
FR786597A (en) * 1934-03-14 1935-09-05 Improvements to steel alloys or special steels
DE727066C (en) * 1937-09-09 1942-10-27 Ruhrstahl Ag Steel for hardened and tempered tools produced by hot forming that are subject to heavy wear and tear due to grinding and rubbing effects

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR462087A (en) * 1912-11-13 1914-01-19 Des Acieries & Forges De Firminy Metal shield
CH169407A (en) * 1932-03-09 1934-05-31 Ver Stahlwerke Ag Process for the production of objects where high wear resistance is important, especially wheel tires.
US2104694A (en) * 1937-03-12 1938-01-04 Vulcan Alloy Corp Weldrod
DE896658C (en) * 1949-10-14 1953-11-12 American Wheelabrator & Equipm Steel for steel shot for metalworking

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1213124B (en) * 1964-08-13 1966-03-24 Koenen & Regel Edelstahlgiesse Wear and impact-resistant iron-carbon alloy
DE1214004B (en) * 1964-08-13 1966-04-07 Koenen & Regel Edelstahlgiesse Wear- and impact-resistant high-alloy iron-carbon cast alloy

Also Published As

Publication number Publication date
DE1119310B (en) 1961-12-14
DE1113950B (en) 1961-09-21

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