EP0531776B1 - Hitzebeständiger warmverformbarer austenitischer Stahl - Google Patents
Hitzebeständiger warmverformbarer austenitischer Stahl Download PDFInfo
- Publication number
- EP0531776B1 EP0531776B1 EP92114280A EP92114280A EP0531776B1 EP 0531776 B1 EP0531776 B1 EP 0531776B1 EP 92114280 A EP92114280 A EP 92114280A EP 92114280 A EP92114280 A EP 92114280A EP 0531776 B1 EP0531776 B1 EP 0531776B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- austenitic steel
- steel according
- installations
- production
- weight
- 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 - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 26
- 239000010959 steel Substances 0.000 title claims abstract description 26
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims abstract description 4
- 230000008018 melting Effects 0.000 claims abstract description 4
- 239000012535 impurity Substances 0.000 claims abstract 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 18
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- 229910052799 carbon Inorganic materials 0.000 claims description 14
- 229910052757 nitrogen Inorganic materials 0.000 claims description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 11
- 229910052710 silicon Inorganic materials 0.000 claims description 11
- 239000010703 silicon Substances 0.000 claims description 10
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 9
- 230000003647 oxidation Effects 0.000 claims description 9
- 238000007254 oxidation reaction Methods 0.000 claims description 9
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 7
- 229910052804 chromium Inorganic materials 0.000 claims description 7
- 239000011651 chromium Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 125000004122 cyclic group Chemical group 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 239000011575 calcium Substances 0.000 claims description 5
- 229910052791 calcium Inorganic materials 0.000 claims description 5
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 239000011572 manganese Substances 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 239000011574 phosphorus Substances 0.000 claims description 3
- 239000003245 coal Substances 0.000 claims description 2
- 239000004020 conductor Substances 0.000 claims description 2
- 238000002309 gasification Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 4
- 239000005864 Sulphur Substances 0.000 claims 1
- 239000004411 aluminium Substances 0.000 claims 1
- 238000003763 carbonization Methods 0.000 claims 1
- 238000010304 firing Methods 0.000 claims 1
- 238000005255 carburizing Methods 0.000 description 7
- 229910052717 sulfur Inorganic materials 0.000 description 6
- 239000011593 sulfur Substances 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 230000001590 oxidative effect Effects 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000005486 sulfidation Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000004584 weight gain Effects 0.000 description 2
- 235000019786 weight gain Nutrition 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229910052768 actinide Inorganic materials 0.000 description 1
- 150000001255 actinides Chemical class 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- -1 chromium carbides Chemical class 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052747 lanthanoid Inorganic materials 0.000 description 1
- 150000002602 lanthanoids Chemical class 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 210000002023 somite Anatomy 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
Definitions
- the invention relates to a heat-resistant, thermoformable austenitic steel and its use as a material for heat and corrosion-resistant objects.
- this steel is an inexpensive alternative to the high nickel-containing materials, e.g. the nickel alloy according to material no. 2,4856.
- this austenitic steel 1.4876 shows strong carburizing phenomena under strong carburizing conditions at temperatures above 900 ° C, which is expressed in a significant weight gain through strong carbide deposits and carbon absorption. As a result, the mechanical properties, in particular the long-term strength, are additionally adversely affected. Even under oxidizing / sulfidizing conditions such as in a gas atmosphere made of nitrogen and 10% SO2 at 750 ° C, austenitic steel 1.4876 shows significant damage due to sulfur absorption.
- an austenitic steel consisting of (details in% by weight): max. 0.10% carbon, 1 - 5% silicon, max. 3% manganese, 15 - 30% chromium, 7 - 35% nickel, max. 0.10% aluminum, calcium + rare earths in total max. 0.10% and max. 0.03% nitrogen.
- This steel shows the material no. 1.4876 an improved resistance to oxidation under cyclic loads at temperatures up to 1100 ° C., in particular due to carbon contents which are said to be below 0.10% by weight, and by limiting the sulfur content to values less than 0.003, preferably 0.0015% by weight .
- carbon and nitrogen contents to less than 0.10 or 0.03% by weight in favor of improved resistance to oxidation, the heat resistance of the material in the temperature interval specified for its use is insufficient.
- the limits on carbon, nitrogen and sulfur can only be achieved with great technical effort when melting this steel.
- an austenitic steel consisting of (data in% by weight) carbon 0.10 to 0.20 silicon 2.5 to 3.0 manganese 0.2 to 0.5 phosphorus Max. 0.015 sulfur Max. 0.005 chrome 25 to 30 nickel 30 to 35 aluminum 0.05 to 0.15 Calcium 0.001 to 0.005 Rare earth 0.05 to 0.15 nitrogen 0.05 to 0.20
- the steel according to the invention is advantageously suitable as a material for the production of objects which have to be resistant to carburization, sulfidation and oxidation at temperatures in the range from 500 to 1000 ° C., in particular in the case of cyclic loading. It is preferably used as a material for the production of plants for thermal waste disposal or for coal gasification and parts thereof. Especially when it comes to waste disposal in incineration plants, the furnace parts are subjected to high cyclical stresses due to changing temperatures during heating and cooling as well as fluctuations in the exhaust gas composition.
- the steel according to the invention can be used without restriction as a material for the production of thermally stressed furnace components, such as support frames for furnaces, conveyor rails and conveyor belts.
- the carbon and nitrogen contents in solution act as very efficient solid-solution strengthening elements and thus increase the heat resistance.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Heat Treatment Of Steel (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4130140A DE4130140C1 (enrdf_load_stackoverflow) | 1991-09-11 | 1991-09-11 | |
| DE4130140 | 1991-09-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0531776A1 EP0531776A1 (de) | 1993-03-17 |
| EP0531776B1 true EP0531776B1 (de) | 1995-11-15 |
Family
ID=6440318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92114280A Expired - Lifetime EP0531776B1 (de) | 1991-09-11 | 1992-08-21 | Hitzebeständiger warmverformbarer austenitischer Stahl |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5302097A (enrdf_load_stackoverflow) |
| EP (1) | EP0531776B1 (enrdf_load_stackoverflow) |
| JP (1) | JPH05195167A (enrdf_load_stackoverflow) |
| AT (1) | ATE130376T1 (enrdf_load_stackoverflow) |
| DE (2) | DE4130140C1 (enrdf_load_stackoverflow) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4130139C1 (enrdf_load_stackoverflow) * | 1991-09-11 | 1992-08-06 | Krupp-Vdm Ag, 5980 Werdohl, De | |
| DE19524234C1 (de) * | 1995-07-04 | 1997-08-28 | Krupp Vdm Gmbh | Knetbare Nickellegierung |
| US7118636B2 (en) * | 2003-04-14 | 2006-10-10 | General Electric Company | Precipitation-strengthened nickel-iron-chromium alloy |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5114118A (en) * | 1974-07-25 | 1976-02-04 | Nisshin Steel Co Ltd | Oosutenaitokeitainetsuko |
| SE419102C (sv) * | 1974-08-26 | 1985-12-23 | Avesta Ab | Anvendning av ett kromnickelstal med austenitisk struktur till konstruktioner som erfordrar hog extrem krypbestendighet vid konstant temperatur upp till 1200?59c |
| JPS5456018A (en) * | 1977-10-12 | 1979-05-04 | Sumitomo Metal Ind Ltd | Austenitic steel with superior oxidation resistance for high temperature use |
| JPS6033345A (ja) * | 1983-08-05 | 1985-02-20 | Sumitomo Metal Ind Ltd | 耐硝酸性オ−ステナイトステンレス鋼 |
| US4853185A (en) * | 1988-02-10 | 1989-08-01 | Haynes International, Imc. | Nitrogen strengthened Fe-Ni-Cr alloy |
-
1991
- 1991-09-11 DE DE4130140A patent/DE4130140C1/de not_active Expired - Fee Related
-
1992
- 1992-08-21 EP EP92114280A patent/EP0531776B1/de not_active Expired - Lifetime
- 1992-08-21 AT AT92114280T patent/ATE130376T1/de not_active IP Right Cessation
- 1992-08-21 DE DE59204329T patent/DE59204329D1/de not_active Expired - Fee Related
- 1992-08-25 US US07/935,532 patent/US5302097A/en not_active Expired - Fee Related
- 1992-09-08 JP JP4265406A patent/JPH05195167A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE4130140C1 (enrdf_load_stackoverflow) | 1992-11-19 |
| JPH05195167A (ja) | 1993-08-03 |
| ATE130376T1 (de) | 1995-12-15 |
| EP0531776A1 (de) | 1993-03-17 |
| US5302097A (en) | 1994-04-12 |
| DE59204329D1 (de) | 1995-12-21 |
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