SE448744B - EXPOSIBLE HARDELABLE NICKEL IRON CASTLE ALLOY - Google Patents

EXPOSIBLE HARDELABLE NICKEL IRON CASTLE ALLOY

Info

Publication number
SE448744B
SE448744B SE8006248A SE8006248A SE448744B SE 448744 B SE448744 B SE 448744B SE 8006248 A SE8006248 A SE 8006248A SE 8006248 A SE8006248 A SE 8006248A SE 448744 B SE448744 B SE 448744B
Authority
SE
Sweden
Prior art keywords
alloy
content
nickel
cobalt
hardelable
Prior art date
Application number
SE8006248A
Other languages
Swedish (sv)
Other versions
SE8006248L (en
Inventor
M Brugger
Original Assignee
Bbc Brown Boveri & Cie
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 Bbc Brown Boveri & Cie filed Critical Bbc Brown Boveri & Cie
Publication of SE8006248L publication Critical patent/SE8006248L/en
Publication of SE448744B publication Critical patent/SE448744B/en

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
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Mold Materials And Core Materials (AREA)
  • Physical Vapour Deposition (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Heat Treatment Of Steel (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)

Description

15 20 25 30 35 40 448 744 En speciell fördel ligger i att legering- en enligt uppfinningen på grund av det för närvarande gällande höga priset på kobolt är väsentligt gynnsamma- ' re med avseende på priset. ' Uppfinningen skall i närmare detalj bely- sas med hjälp av tvâ utföringsexempel. A special advantage lies in the fact that the alloy according to the invention is considerably more favorable with respect to the price due to the currently high price of cobalt. The invention will be elucidated in more detail by means of two exemplary embodiments.

Båda de undersökta legeringarna smältes i vakuum, göts i metallformar till stänger med_diame- ter 14 mm och konsoliderades i vakuum. För att elimine- ra porositet varmvalsades stängerna vid 1120°C till 6 mm diameter och underkastades därefter värmehehandlingn vid 650°C i 5 timmar. Detta stångmaterial formades ge- nom skärande bearbetning till kroppar för hâllfasthets- provning.Both of the alloys examined were melted in vacuo, cast in metal molds for rods with a diameter of 14 mm and consolidated in vacuo. To eliminate porosity, the rods were hot rolled at 1120 ° C to 6 mm diameter and then subjected to the heat treatment at 650 ° C for 5 hours. This bar material was formed by cutting into bodies for strength testing.

En första legering hade följande samman- sättning: nickel 42,9%, kobolt 2,14%, titan 1,66%, niob 0,43%, aluminium 0,13%, kol 0,003%, kisel 0,05%, rest järn och de av smältningen orsakade föroreningarna.A first alloy had the following composition: nickel 42.9%, cobalt 2.14%, titanium 1.66%, niobium 0.43%, aluminum 0.13%, carbon 0.003%, silicon 0.05%, residue iron and the impurities caused by the melting.

En andra legering hade följande samman- sättning: nickel 37,4%, kobolt 1,99%, titan 1,70%, niob 0,51%, aluminium 0,07%, kol 0,002%, kisel 0,04%, rest järn och de av smältningen orsakade föroreningarna.A second alloy had the following composition: nickel 37.4%, cobalt 1.99%, titanium 1.70%, niobium 0.51%, aluminum 0.07%, carbon 0.002%, silicon 0.04%, residue iron and the impurities caused by the melting.

Dessa legeringar uppvisade följande egen- skaper: Temperatur- Längdutvidgningskoefficient x 10-G/1°C område, °C 2. leggringen 1. legeringen zo - 1oo 3,3 o,9 zo - zoo 3,3 1,9 zo - zoo 3,5 4,2 zo - 350 4,0 . 4,7 zo - 4oo 4,9 6,5 zo - soo 6,7 9,1 Q zo - soo 8,2 9,5 d* Dessa resultat uppnâddes ehuru halten nickel, kobolt, titan och niob enligt ovanstående ek- vation för den första legeringen var 40,5% och för den 10 15 20 andra legeringen 34,9%.These alloys exhibited the following properties: Temperature- Length expansion coefficient x 10-G / 1 ° C range, ° C 2. alloy 1. alloy zo - 1oo 3.3 o, 9 zo - zoo 3.3 1.9 zo - zoo 3.5 4.2 so - 350 4.0. 4.7 zo - 4oo 4.9 6.5 zo - soo 6.7 9.1 Q zo - soo 8.2 9.5 d * These results were obtained although the content of nickel, cobalt, titanium and niobium according to the above equation for the first alloy was 40.5% and for the second alloy 34.9%.

De båda legeringarnas mekaniska egenska- per bestämdes vid rumstemperaturen och vid 600°C. 448 744 Lege- Försöks- Draghåll- Sträck- Töjning ring temperatur fasthet gräns % °c N/mmz N/mm* 1 20 1045 760 25 2 20 1100 1030 17 1 600 610 780 13 2 600 470 760 13 Av dessa resultat framgår det, att en gjutlegering enligt uppfinningen är speciellt lämpad för maskindelar som utsättes för hög mekanisk och ter- misk pâkänning, exempelvis rotorer i gasdynamiska tryck- vâgsmaskiner.The mechanical properties of the two alloys were determined at room temperature and at 600 ° C. 448 744 Doctor- Experimental- Tensile strength- Stretch- Elongation ring temperature strength limit% ° c N / mmz N / mm * 1 20 1045 760 25 2 20 1100 1030 17 1 600 610 780 13 2 600 470 760 13 From these results it appears , that a casting alloy according to the invention is particularly suitable for machine parts which are subjected to high mechanical and thermal stress, for example rotors in gas-dynamic pressure weighing machines.

Claims (3)

10 15 20 448 744 -4- Patentkrav10 15 20 448 744 -4- Patent claim 1. Utskiljningshärdhar nickel-järngjutle- gering med en längdutvidgningskoefficient mindre än 5 x 1o'°/1°c mellan 20 och 3oo°c och en sträckgräns av över 350 N/mmz vid 20°C, vilken legering är baserad på järn med de vid smältning orsakade föroreningarna och inne- håller 35 - 45% nickel, mindre än 4% fri titan, mellan 0 och 1% niob och en kobolttillsats, k ä n n e t e c k - n a'd a v att kobolthalten ligger mellan 1,5 - 2,5 Vikífi a _Precipitation hardening has a nickel-iron casting alloy with a coefficient of longitudinal expansion less than 5 x 10 ° / 1 ° C between 20 and 300 ° C and a yield strength of over 350 N / mm 2 at 20 ° C, which alloy is based on iron with the during melting caused the impurities and contains 35 - 45% nickel, less than 4% free titanium, between 0 and 1% niobium and a cobalt additive, characterized in that the cobalt content is between 1.5 - 2 5 Vikí fi a _ 2. Legering enligt krav 1, k ä n n e - t e c k n a d a v en nickelhalt av 42,9%, en kobolt- halt av 2,14%, en titanhalt av 1,66% och en niobhalt av 0,43%.An alloy according to claim 1, characterized in that a nickel content of 42.9%, a cobalt content of 2.14%, a titanium content of 1.66% and a niob content of 0.43%. 3. Legering enligt Krav 1, k ä n n e - t e c k n a d a v en nickelhalt av 37,4%, en kobolt- halt av 1,99%, en titanhalt av 1,70% och en niobhalt av 0,51%. v»Alloy according to Claim 1, characterized by a nickel content of 37.4%, a cobalt content of 1.99%, a titanium content of 1.70% and a niob content of 0.51%. v »
SE8006248A 1979-09-12 1980-09-08 EXPOSIBLE HARDELABLE NICKEL IRON CASTLE ALLOY SE448744B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH823979A CH643594A5 (en) 1979-09-12 1979-09-12 Iron-nickel casting alloy

Publications (2)

Publication Number Publication Date
SE8006248L SE8006248L (en) 1981-03-13
SE448744B true SE448744B (en) 1987-03-16

Family

ID=4337282

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8006248A SE448744B (en) 1979-09-12 1980-09-08 EXPOSIBLE HARDELABLE NICKEL IRON CASTLE ALLOY

Country Status (4)

Country Link
JP (1) JPS5647548A (en)
CH (1) CH643594A5 (en)
DE (1) DE2940532C2 (en)
SE (1) SE448744B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03245815A (en) * 1990-02-23 1991-11-01 Kubota Corp Biological deodorizing apparatus using ceramic carrier for immobilizing bacteria and waste water treatment apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2266481A (en) * 1939-10-27 1941-12-16 Int Nickel Co Age hardenable, low expansion, nickel-iron-titanium alloy
GB1401259A (en) * 1973-05-04 1975-07-16 Int Nickel Ltd Low expansion alloys

Also Published As

Publication number Publication date
JPS5647548A (en) 1981-04-30
SE8006248L (en) 1981-03-13
DE2940532A1 (en) 1981-04-02
DE2940532C2 (en) 1986-04-30
JPH021219B2 (en) 1990-01-10
CH643594A5 (en) 1984-06-15

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