DE521547C - Building material for the manufacture of turbine blades and components that are subjected to similar mechanical and thermal stresses - Google Patents

Building material for the manufacture of turbine blades and components that are subjected to similar mechanical and thermal stresses

Info

Publication number
DE521547C
DE521547C DEH104814D DEH0104814D DE521547C DE 521547 C DE521547 C DE 521547C DE H104814 D DEH104814 D DE H104814D DE H0104814 D DEH0104814 D DE H0104814D DE 521547 C DE521547 C DE 521547C
Authority
DE
Germany
Prior art keywords
building material
manufacture
turbine blades
subjected
components
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
DEH104814D
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.)
Vacuumschmelze GmbH and Co KG
Original Assignee
Heraeus Vacuumschmelze 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 Heraeus Vacuumschmelze AG filed Critical Heraeus Vacuumschmelze AG
Priority to DEH104814D priority Critical patent/DE521547C/en
Application granted granted Critical
Publication of DE521547C publication Critical patent/DE521547C/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/28—Selecting particular materials; Particular measures relating thereto; Measures against erosion or corrosion

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)

Description

Baustoff zur Herstellung von Turbinenschaufeln und solchen Bauteilen, welche ähnlichen mechanischen und Wärmebeanspruchungen unterworfen sind An Baustoffe für die Herstellung von Turbinenschaufeln und solchen Bauteilen, welche ähnlichen mechanischen und Wärmebeanspruchungen unterworfen sind, werden folgende Anforderungen gestellt: Die Baustoffe sollen chemisch widerstandsfähig und oxydationsbeständig sein; sie müssen insbesondere auch einem häufigen Erhitzen und Wiederabkühlen standhalten und müssen schließlich auch bei hohen Temperaturen eine hohe Streckgrenze besitzen.Building material for the manufacture of turbine blades and such components, which are subject to similar mechanical and thermal stresses to building materials for the manufacture of turbine blades and components that are similar Mechanical and thermal stresses are subject to the following requirements posed: The building materials should be chemically resistant and resistant to oxidation be; in particular, they must also withstand frequent heating and re-cooling and, after all, must have a high yield strength even at high temperatures.

Man hat als Baustoff für Turbinenschaufeln und ähnlich beanspruchte Bauteile bereits Chromnickellegierungen vorgeschlagen, denen man gelegentlich Zusätze entweder von Wolfram oder von Molybdän gab.It has been claimed as a building material for turbine blades and the like Components already proposed chromium-nickel alloys, which one occasionally has additives of either tungsten or molybdenum.

Gemäß der Erfindung werden als Baustoff für besonders hoch beanspruchte Turbinen-und Maschinenteile an sich bekannte Legierungen verwendet, die aus lo bis 4ooo Chrom, .1o bis 8o c".) Nickel, to bis 40 °`o Eisen sowie i bis 6 o.'o Aluminium und gegebenenfalls o bis 15 o%o Wolfram und o bis 12 o .o Molybdän bestehen und dabei praktisch kohlenstoffrei; sind. Von derartigen Legierungen ist bekannt, daß sie chemisch widerstandsfähig und oxydationsbeständig sind. Es war aber nicht bekannt, daß diese Legierungen auch bei hoher Temperatur noch eine hohe Streckgrenze besitzen. Während eine Legierung, die aus 15 % Chrom, 83 % Nickel und 2 o#'o Mangan besteht, im Dauerzerreißversuch bei 6oo° eine Streckgrenze von rund 17 kg/mm2 aufwies, zeigte eine Legierung genau derselben Zusammensetzung, der aber zusätzlich noch 2 Aluminium zugegeben waren, bei derselben Temperatur eine Streckgrenze zwischen 22 und 23 kgimm2. Eine Legierung aus 17 % Eisen, 61 @'o Nickel, 15 @@o Chrom, 5 0% Aluminium, 2 @o Mangan besaß bei 5oo° eine Streckgrenze von 17 kg/mm2, während eine im wesentlichen gleich zusammengesetzte Legierung, bei der das Aluminium fehlte und die o,6 @o Kobalt enthielt, bei 5oo° nur eine Streckgrenze von 15 kg/mm2 aufwies. Vergleichswerte über Streckgrenzen bei Temperaturen über 40o° von anderen gelegentlich vorgeschlagenen Legierungen, beispielsweise solchen, die nennenswerte Mengen von Kobalt- enthalten, sind nicht bekannt. Selbst unter der Voraussetzung, daß mit solchen hoch kobalthaltigen Legierungen sich dieselben Streckgrenzenwerte erzielen lassen würden wie bei den aluminiumhaltigen Chromnickellegierungen, würde aus preislichen Gründen den aluminiumhaltigen Chromnickellegierungen der Vorzug zu geben sein.According to the invention, alloys known per se are used as building material for particularly highly stressed turbine and machine parts, which are composed of 10 to 4,000 chromium, .1o to 8o c ".) Nickel, to 40% iron and 1 to 6 o. Alloys of this type are known to be chemically resistant and resistant to oxidation, but it was not known that they are Alloys still have a high yield strength even at high temperatures, while an alloy consisting of 15% chromium, 83 % nickel and 2 o # 'o manganese showed a yield strength of around 17 kg / mm2 in a long-term tear test at 600 ° Alloy of exactly the same composition, but with an additional 2 aluminum, at the same temperature a yield point between 22 and 23 kgimm2. An alloy of 17% iron, 61 @ 'o nickel, 15 @@ o chromium, 50% aluminum, 2nd @o Mang an had a yield strength of 17 kg / mm2 at 500 °, while an alloy of essentially the same composition, in which the aluminum was missing and which contained 0.6% cobalt, had a yield strength of only 15 kg / mm2 at 500 °. Comparative values of yield strengths at temperatures above 40 ° from other alloys that have been proposed occasionally, for example those that contain significant amounts of cobalt, are not known. Even provided that the same yield strength values could be achieved with such high cobalt-containing alloys as with the aluminum-containing chromium-nickel alloys, preference should be given to the aluminum-containing chromium-nickel alloys for reasons of price.

In den Fällen, in denen auch die aluminiumhaltigen Chromnickellegierungen in ihrem mechanischen Verhalten noch nicht ausreichend sind, empfiehlt es sich, ihnen noch Zusätze von Wolfram oder Molybdän in den oben angegebenen Grenzen zu geben. Die Herstellung der beschriebenen Legierungen kann beispielsweise durch Schmelzen im Vakuum erfolgen.In those cases in which the aluminum-containing chromium-nickel alloys are not yet sufficient in terms of their mechanical behavior, it is advisable to add tungsten or molybdenum to them within the limits specified above. The alloys described can be produced, for example, by melting in a vacuum.

Claims (1)

PATENTANSPRUCH: Baustoff zur Herstellung von Turbinenschaufeln und solchen Bauteilen, welche ähnlichen mechanischen und Wärmebeanspruchungen unterworfen sind, dadurch gekennzeichnet, daß der Baustoff aus an sich bekannten praktisch kohlenstoffreien Legierungen aus i o bis .4o 9 Chrom, 4:o bis 8o oo Nickel, io bis 40 öb Eisen sowie i bis 6 0'o Aluminium und gegebenenfalls o bis 15 o;ö Wolfram und o bis 12 ob 1VIolybdän besteht.PATENT CLAIM: Building material for the manufacture of turbine blades and those components that are subjected to similar mechanical and thermal stresses are, characterized in that the building material is made of practically carbon-free known per se Alloys made from 10 to 4o 9 chromium, 4: 0 to 8o oo nickel, 10 to 40 öb iron as well i to 6 0'o aluminum and optionally 0 to 15 0; ö tungsten and 0 to 12 ob 1VIolybdenum consists.
DEH104814D 1925-12-29 1925-12-29 Building material for the manufacture of turbine blades and components that are subjected to similar mechanical and thermal stresses Expired DE521547C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEH104814D DE521547C (en) 1925-12-29 1925-12-29 Building material for the manufacture of turbine blades and components that are subjected to similar mechanical and thermal stresses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH104814D DE521547C (en) 1925-12-29 1925-12-29 Building material for the manufacture of turbine blades and components that are subjected to similar mechanical and thermal stresses

Publications (1)

Publication Number Publication Date
DE521547C true DE521547C (en) 1931-03-23

Family

ID=7169619

Family Applications (1)

Application Number Title Priority Date Filing Date
DEH104814D Expired DE521547C (en) 1925-12-29 1925-12-29 Building material for the manufacture of turbine blades and components that are subjected to similar mechanical and thermal stresses

Country Status (1)

Country Link
DE (1) DE521547C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0074603A1 (en) * 1981-09-11 1983-03-23 Hitachi, Ltd. Gas turbine nozzle having superior thermal fatigue resistance
FR2557594A1 (en) * 1983-12-30 1985-07-05 Metalimphy NICKEL-BASED ALLOYS
FR2564107A1 (en) * 1984-05-11 1985-11-15 Cabot Corp NICKEL-CHROME-IRON-ALUMINUM ALLOY AND PRODUCT ARTICLE.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0074603A1 (en) * 1981-09-11 1983-03-23 Hitachi, Ltd. Gas turbine nozzle having superior thermal fatigue resistance
FR2557594A1 (en) * 1983-12-30 1985-07-05 Metalimphy NICKEL-BASED ALLOYS
EP0149946A2 (en) * 1983-12-30 1985-07-31 Imphy S.A. Nickel base alloy
EP0149946A3 (en) * 1983-12-30 1985-08-21 Imphy S.A. Nickel base alloy
FR2564107A1 (en) * 1984-05-11 1985-11-15 Cabot Corp NICKEL-CHROME-IRON-ALUMINUM ALLOY AND PRODUCT ARTICLE.

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