DK156176B - APPLICATION OF A FERRITIC STAINLESS STEEL FOR THE MANUFACTURING OF OBJECTS OF RESISTANCE TO INTERCRYSTALLIC CORROSION IN WELDING CONDITION WITHOUT HEATING AFTER - Google Patents
APPLICATION OF A FERRITIC STAINLESS STEEL FOR THE MANUFACTURING OF OBJECTS OF RESISTANCE TO INTERCRYSTALLIC CORROSION IN WELDING CONDITION WITHOUT HEATING AFTER Download PDFInfo
- Publication number
- DK156176B DK156176B DK244880AA DK244880A DK156176B DK 156176 B DK156176 B DK 156176B DK 244880A A DK244880A A DK 244880AA DK 244880 A DK244880 A DK 244880A DK 156176 B DK156176 B DK 156176B
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- DK
- Denmark
- Prior art keywords
- steel
- corrosion
- raw material
- stainless steel
- ferritic stainless
- Prior art date
Links
- 238000005260 corrosion Methods 0.000 title claims description 16
- 230000007797 corrosion Effects 0.000 title claims description 16
- 238000010438 heat treatment Methods 0.000 title claims description 8
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 title claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 24
- 239000010959 steel Substances 0.000 claims description 24
- 239000002994 raw material Substances 0.000 claims description 15
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 239000011651 chromium Substances 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 239000011572 manganese Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000356 contaminant Substances 0.000 claims description 2
- 238000005098 hot rolling Methods 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 description 10
- 230000000052 comparative effect Effects 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 description 1
- -1 chromium carbides Chemical class 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229910003470 tongbaite Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0087—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for chains, for chain links
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Heat Treatment Of Articles (AREA)
Description
DK 156176 BDK 156176 B
Opfindelsen angâr anvendelsen af ferritisk rustfrit stâl som râmateriale til fremstilling af genstande, der i svejst tilstand uden varmeefterbehandling skal være be-standige over for interkrystallinsk korrosion, specielt 5 retliniede eller kurveformede hængselbândkæder og rulle-kæder.The invention relates to the use of ferritic stainless steel as a raw material for the manufacture of articles which, in welded condition, must be resistant to intercrystalline corrosion, in particular rectilinear or curved hinge band chains and roller chains.
Opfindelsen tilvejebringer et til ovennævnte formai rustfrit stâl, der udviser hpj styrke og forlængelse, og 10 som i udstrakt grad er korrosionsbestandigt og billigt at fremstille. Specielt skal stâlet i koldtformet tilstand frembyde en h0j trækstyrke, 0,2-grænse, brudfor-længelse og sejhed og være bestandig i svejst tilstand uden varmeefterbehandling over for interkrystallinsk 15 korrosion. Derudover skal det ogsâ til visse anvendel-sesformer udvise en stor varig styrke.The invention provides a stainless steel for the aforementioned form which exhibits high strength and elongation, and which is highly corrosion resistant and inexpensive to manufacture. In particular, the steel in the cold-formed state must exhibit a high tensile strength, 0.2-limit, fracture elongation and toughness and be resistant in welded state without heat-treatment to intercrystalline corrosion. In addition, it must also exhibit a great durable strength for certain uses.
Det tyske normalstâl X 20 Cr 13 (râmateriale nr. 1 4021) med 0,17 til 0,22 % C, 12 til 14 % Cr, til 1,0 % Si, til 20 1,0 % Mn, resten Fe kræver til opnâelse af en trækstyrke indtil 1000 N/mm^ en forgl0dningsbehandling. Dette stâl med perlitisk-martensitisk struktur eller lignende stâl-arter fremviser utilfredsstillende forlængelsesværdier samt ingen optimal svejselighed. Ogsâ korrosionsbestan-25 digheden er ikke tilstrækkelig.The German normal steel X 20 Cr 13 (raw material no. 1 4021) with 0.17 to 0.22% C, 12 to 14% Cr, to 1.0% Si, to 20 1.0% Mn, the remainder Fe requires obtaining a tensile strength up to 1000 N / mm ^ a lamination treatment. This steel with perlitic-martensitic structure or similar steel species exhibits unsatisfactory elongation values and no optimal weldability. Corrosion resistance is also not sufficient.
Ogsâ ferritisk chromstâl, râmateriale nr. 1 4016 med sænket carbonindhold og med 16 til 18 % forhpjet chrom-indhold opfylder ikke kravene om bedre styrke og samti-30 dig h0jere forlængelse og sejhed i koldtformet tilstand.Also ferritic chromium steel, raw material no. 4016 with reduced carbon content and with 16 to 18% pre-chromium content does not meet the requirements for better strength and at the same time higher elongation and toughness in cold form.
Ved h0jere koldtformningsgrader pâ 10 til 30 % indtræder specielt et kraftigt fald i forlængelsen og sejheden.At higher cold forming rates of 10 to 30%, a particularly significant decrease in elongation and toughness occurs.
Dette râmateriale er yderligere kun betinget svejseligt.This raw material is further conditional on welding.
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DK 15617è BDK 15617è B
Ogsâ de for tiden anvendte perlitiske kvaliteter, râma-terialerne nr. 1 4000, 1 4006 eller 1 4512 er heller ik-ke i besiddelse af optimale statiske og dynamiske styr-kedata. Trækstyrken af de med 15 til 25 %ig formerings-5 grad afvalsede bând ligger i st0rrelsesordenen pâ fra 650 til 740 N/mm2. H0jere styrkevaerdier kan kun opnâs pâ bekostning af forlængelsen og sejheden. Herved opstâr der den fare, at der ved de efterfjzfrlgende forarbejd-ningstrin, som afskæring, prægning eller valsning optræ-10 der fine revner i konturen, der ved senere drift for-stærker brudfaren ved slid.Also, the perlithic qualities currently used, the raw materials Nos. 1 4000, 1 4006 or 1 4512 do not possess optimal static and dynamic strength data. The tensile strength of the strips with 15 to 25% in propagating 5 degree rolls is in the order of 650 to 740 N / mm2. Higher strength values can only be obtained at the expense of the extension and toughness. This creates the danger that during the subsequent processing steps, such as cutting, embossing or rolling, fine cracks appear in the contour, which in subsequent operation intensifies the fracture danger of wear.
Man har nu l0st de ovennævnte problemer ved den omhand-lede anvendelse af et stâl med f0lgende sammensætning: 15 0,03 til 0,6 % carbon 0 til 1,0 % silicium 0 til 1,0 % mangan 16 til 17,5 % chrom 20 0,8 til 1,0 % nikkel.The above problems have now been solved by the use of a steel having the following composition: 0.03 to 0.6% carbon 0 to 1.0% silicon 0 to 1.0% manganese 16 to 17.5% chromium 0.8 to 1.0% nickel.
resten jern og uundgàelige forureninger, i varmtvalset, hvidudgl0det og herefter deformeret tilstand til de ovenfor beskrevne formâl.the remainder iron and unavoidable contaminants, in hot-rolled, white-annealed and subsequently deformed, for the purposes described above.
2525
Det omhandlede stâl, der skal anvendes, har efter en koldtformning med en deformeringsgrad pâ fra 18 til 25 % en mindste trækstyrke pâ 750 N/mm2, fortrinsvis 800 N/mm2, og en 0,2-grænse pâ over 600 N/mm2 ved en brud-30 forlængelse pâ mindst 10 %. Med disse værdier ligger stâlet over de hidtil kendte sammenlignelige stâlarters værdier.The steel to be used, after a cold forming having a deformation degree of from 18 to 25%, has a minimum tensile strength of 750 N / mm2, preferably 800 N / mm2, and a 0.2 limit of more than 600 N / mm2 at a break-30 extension of at least 10%. With these values the steel is above the values of previously known comparable steel species.
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DK 156176 BDK 156176 B
Det omhandlede ferritiske rustfri stâl, der skal anvendes, med ovenstâende sammensætning, udmærker si.g i for-hold til de ovenstâende omtalte stâlkvaliteter ved h0je~ re styrke-, forlængelses- og sejhedsværdier. Herudover 5 er det billigere end det autentiske 18/8 CrNi-stâl., der udover nævnte styrke, brudforlængelse og sejhed ogsâ op-fylder fordringerne til korrosionsbestandighed og god svejselighed.The ferritic stainless steel in question to be used, having the above composition, is excellent in relation to the above-mentioned steel grades at higher strength, elongation and toughness values. In addition, 5 is cheaper than the authentic 18/8 CrNi steel, which, in addition to the mentioned strength, elongation and toughness, also fulfills the requirements for corrosion resistance and good weldability.
10 Deruover kan det omhandlede stâl, der skal anvendes, ef-ter varmtvalsning, udgl0dning og efterf0lgende koldt-formning med fordel anvendes som râmateriale Lil frem-stilling af genstande, der i svejst tilstand skal være bestandige uden varmeefterbehandling over for interkry-15 stallinsk korrosion. Med hensyn til dette kan det omhandlede stâl, der skal anvendes, kun sammenlignés med 18/8 CrNi-stâlet, der imidlertid, som tidligere nævnt, er dyrere pâ grund af det h0jere legeringsindhold.In addition, the steel to be used, after hot rolling, annealing and subsequent cold forming, can advantageously be used as raw material for the preparation of articles which in a welded state must be resistant without heat treatment to intercrystalline corrosion. . In this regard, the steel to be used can only be compared with the 18/8 CrNi steel, which, however, as mentioned earlier, is more expensive due to the higher alloy content.
20 Det omhandlede stâl, der skal anvendes, er brugbart overalt, hvor man udover gode styrke-, forlængelses og sejhedsegenskaber ogsâ forlanger udpræget bestandighed over for interkrystallinsk korrosion i svejst tilstand uden varmeefterbehandling, Pâ grund af den gunstige kom-25 bination af de nævnte egenskaber egner det omhandlede ferritiske rustfrie stâl, der skal anvendes, sig spe-cielt som râmateriale til fremstilling af ligel0bende eller kurveformede hængselkæder. Hængselkæder mâ være i besiddelse af h0je styrke-, forlængelses- og sejhedsvær-30 dier i koldtformet tilstand. Koldvalsning er npdvendig til dette formâl for at formindske ruhedsgraden. Jo glattere overfladen er, desto ringere er friktionsvær-dien og hermed sliddet pâ hængselbândets lænker samt pâ glidelisterne og styreskinnerne. En glat overflade be-35The steel in question to be used is usable everywhere where, in addition to good strength, elongation and toughness properties, pronounced resistance to intercrystalline corrosion in welded state without heat treatment is required, due to the favorable combination of the aforementioned properties. The ferritic stainless steel to be used is particularly suitable as a raw material for the manufacture of straight or curved hinge chains. Hinge chains must have high strength, extension and toughness values in cold form. Cold rolling is necessary for this purpose to reduce the roughness. The smoother the surface, the worse the friction value and thus the wear on the hinge strap's links as well as on the slides and guide rails. A smooth surface is 35
DK 156176 BDK 156176 B
4 virker ogsâ et bedre korrosionsforhold over for en dâr~ ligere eller grovere udf0relse. Det kendte râmateriale X 22 CrNi 17 (râmateriale nr. 1 4057) har efter hvidglxsd-ning allerede en naturlig styrke pâ 750 til 800 N/miu^.4 also works a better corrosion ratio against a poorer or coarser version. The known raw material X 22 CrNi 17 (raw material no. 1 4057), after white glazing, already has a natural strength of 750 to 800 N / mlu.
5 Ved koldtvalsning stiger styrken allerede i begyndelses-fasen med mindre déformeringsgrader pâ fra 5 til 10 % til over 900 N/mm^, sâledes at der altid herefter atter mâ udgl0des. En ulempe ved udgl0dningen er udskillelsen af chromkarbider pâ overfladen, hvilket forstærker slid-10 det ved udskæring af platiner, af snitstempler og snit-plader betydeligt. Den dârlige koldtformning virker ogsâ uheldigt ved de smâ tolerancer for bândtykkelsen og ogsâ pâ overfladeudf0relsen (ruheders dybde). HængselkÆdede-lene af râmaterialet 1 4057 blev udelukkende udglpdet og 15 herefter efterbehandlet flere timer (trovaleref, bejdset og poleret) for at udglatte overfladen. Dybden af ruhe-derne lâ i st0rrelsesordenen ca. Ra=20 μπι. Ogsâ svejse-forholdene for râmaterialet 1 4057 er ikke tilfredsstil-lende. Svejsestederne var pâ grund af lufthaerdningen 20 blevet mere eller mindre spr0de. Af sikkerhedsgrunde mâtte der derfor foretages en efterf0lgende varmebehand-ling. Dette fordyrer ikke alene fremstillingen af hæng-selbândene, men influerer ogsâ pâ korrosionsbestandighe-den pâ grund af den ved varmebehandlingen optrædende 25 chromkarbidudskillelse.5 In cold rolling, the strength increases in the initial phase with smaller deformation rates of from 5 to 10% to more than 900 N / mm 2, so that it is always necessary to smooth again. A disadvantage of the lubrication is the separation of chromium carbides on the surface, which considerably reinforces the wear by cutting platinum, of cut pistons and cut plates. The poor cold forming also seems unfortunate in the small tolerances for the tape thickness and also on the surface design (depth of roughness). The hinge chains of the raw material 1 4057 were cut out exclusively and then treated for several hours (trovaleref, stained and polished) to smooth the surface. The depth of the panes was in the order of approx. Ra = 20 μπι. Also, the welding conditions for the raw material 1 4057 are not satisfactory. The welding sites had become more or less brittle because of the cure 20. Therefore, for safety reasons, a subsequent heat treatment had to be performed. This not only increases the production of the hinge bands, but also influences the corrosion resistance due to the chromium carbide separation occurring during the heat treatment.
En sammenligning af styrke- og forlængelsesværdierne af det omhandlede stâl, der skal anvendes til ovennævnte formâl, med sammenligningsstâlmaterialet nr. 1 4016 er 30 vist i fig. 1. En sammenligning af slidstyrken af det omhandlede stâl, der skal anvendes, i forhold til det kendte stâl 1 4021 i forædlet tilstand eller med 0,9 til 1,4 % nikkel i udgl0det koldtformet tilstand (DE-AS 26 18 305) er vist i fig. 2. Begge kurver viser det til 35 5A comparison of the strength and elongation values of the present steel to be used for the above purpose with the comparative steel material No. 1,4016 is shown in FIG. 1. A comparison of the abrasion resistance of the present steel to be used in relation to the known steel 1 4021 in refined condition or by 0.9 to 1.4% nickel in annealed cold-formed state (DE-AS 26 18 305) is shown in FIG. 2. Both curves show it to 35 5
DK 156176 BDK 156176 B
nævnte anvendelse omhandlede ferritiske rustfri stâls overlegenhed i forhold til kendte sammenligningsstâ'lar--ter.said application referred to the superiority of ferritic stainless steels compared to known comparative states.
5 Da der til hængselbândkæder pâ pladens underside nia pâ-svejses f0ringssko eller nedholdere for at opnâ en god f0ring, er det vigtigt, at disse svejsesteder ogsâ uden varmeefterbehandling ikke frerabyder nogen interkrystal-linsk korrosion. Man unders0gte svejseforholdene pâ en 10 pr0ve. Fastg0ringen af f0ringsskoene eller nedholderne skete ved tryksvejsning pâ to eller fire punkter pâ en modstandssvejsemaskine. Mikroskopiske strukturunderso-gelser viser i nærheden af svejses0mmen og ved over-gangszonerne ingen udskillelse eller nævneværdig udhærd-15 ning, der kan f0re til en spr0dhed med heraf f0lgende sejhedsnedgang eller til korrosionsangreb. Medens pr0-verne af det til sammenligning udpressede kendte stâl 1 4000 og 1 4006 kun i svejst tilstand kunne modstâ en middeltrykbelastning pâ 10500 N, lâ værdien for en pr0ve 20 fremstillet af det omhandlede stâl pâ 16500 N.·5 Since for hinge band chains on the underside of the plate nine welding shoes or holders are welded to obtain a good lining, it is important that these welding sites also do not prevent intercrystalline corrosion without heat treatment. Welding conditions of a sample were examined. The fastening shoes or holders were secured by pressure welding at two or four points on a resistance welding machine. Microscopic structural studies show in the vicinity of the welding seam and at the transition zones no excretion or appreciable cure that can lead to a brittleness with consequent toughness decline or corrosion attack. While the samples of the known prior art extruded 1 4000 and 1 4006 could only withstand a mean compressive load of 10500 N, in the welded state, the value of a specimen 20 made of the steel in question at 16500 N. ·
Korrosionsforholdene unders0gtes i forskellige substra-ter og til sammenligning anvendtes det austenitiske râ-materiale 1 4310. Resultaterne er angiver i f0l.gende l:a- 25 bel.The corrosion conditions were investigated in different substrates and by comparison the austenitic raw material was used 4343. The results are given in the following l: a-bel.
30 35 630 35 6
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Substrat RésultatSubstrate Result
Kobber-sulfatpr0ve meget god, ingen forskel i for- hold til sammenligninçisstâlet, 5Copper sulphate test very good, no difference in relation to the comparative steel, 5
Veksel-dyppefors0g i god, ligeledes ingen forskel i 5 %’s NaCl-opl0sning forhold til sammenligningsstâ- let 10 Veksel-dyppefors0g i meget god, ligeledes ingen en 5 %'s svovlsyre og en forskel i forhold til 5's salpetersyre sammenligningsrâmaterialetExchange dip test in good, also no difference in 5% NaCl solution compared to the comparative state 10 Exchange dip test in very good, likewise no one 5% sulfuric acid and a difference in comparison with 5's nitric acid comparison material
Varigheden af pr0verne var i aile tilfælde 5 dage. De 15 gennemf0rte fors0g viser, at det omhandlede stâl, der skal anvendes til nævnte formai, frembyder samme korro-sionsbestandighed som h0jlegerede stâlarter.The duration of the samples was in all cases 5 days. The 15 tests carried out show that the steel in question to be used for said formulation offers the same corrosion resistance as high alloy steel species.
Det omhandlede stâl, der skal anvendes til nævnte for-20 mâl, egner sig ikke alene til hængselkæder, roen ogsâ til andre kæder f.eks. rullekæder med pâbyggede dele og til aile genstande, der skal opfylde de nævnte krav med hen-syri til styrke-, forlængelses-, sejheds- og svejsefor-hold og korrosionsbestandighed.The steel in question to be used for said purpose is not only suitable for hinge chains, calm also for other chains, e.g. roller chains with assembled parts and for all objects which must fulfill the aforementioned requirements with regard to strength, elongation, toughness and welding conditions and corrosion resistance.
25 30 3525 30 35
Claims (3)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2923532A DE2923532C2 (en) | 1979-06-09 | 1979-06-09 | Use of a ferritic stainless steel for welded objects that are resistant to inter-crystalline corrosion without post-heat treatment |
| DE2923532 | 1979-06-09 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK244880A DK244880A (en) | 1980-12-10 |
| DK156176B true DK156176B (en) | 1989-07-03 |
| DK156176C DK156176C (en) | 1989-12-04 |
Family
ID=6072932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK244880A DK156176C (en) | 1979-06-09 | 1980-06-06 | APPLICATION OF A FERRITIC STAINLESS STEEL FOR THE MANUFACTURING OF OBJECTS OF RESISTANCE TO INTERCRYSTALLIC CORROSION IN WELDING CONDITION WITHOUT HEATING AFTER |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS565954A (en) |
| BE (1) | BE883704A (en) |
| BR (1) | BR8003535A (en) |
| DE (1) | DE2923532C2 (en) |
| DK (1) | DK156176C (en) |
| ES (1) | ES8101127A1 (en) |
| FR (1) | FR2458598B1 (en) |
| GB (1) | GB2051859B (en) |
| IT (1) | IT1131534B (en) |
| NL (1) | NL8003119A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2733786B2 (en) * | 1989-06-27 | 1998-03-30 | 日新製鋼株式会社 | Ferritic stainless steel for fusion welding with excellent weld toughness |
| DE3936072A1 (en) * | 1989-10-28 | 1991-05-02 | Rexnord Kette Gmbh & Co Kg | HEAT TREATMENT METHOD |
| FR2671106B1 (en) * | 1990-12-27 | 1994-04-15 | Ugine Aciers Chatillon Gueugnon | PROCESS FOR THE PREPARATION OF A STAINLESS STEEL WITH A TWO-PHASE FERRITE-MARTENSITE STRUCTURE AND STEEL OBTAINED ACCORDING TO THIS PROCESS. |
| DE4332854C2 (en) * | 1992-10-17 | 1994-10-06 | Schaeffler Waelzlager Kg | Use of a ferritic iron alloy for impulse wheels and methods for their heat treatment |
| DE4301754C2 (en) * | 1993-01-23 | 1994-10-20 | Rexnord Kette Gmbh & Co Kg | Process for producing hot rolled steel strip with set strength |
| NL1023383C2 (en) | 2003-05-09 | 2004-11-15 | Rexnord Flattop Europe Bv | Chain pin for hinge band chains. |
| DE202014105286U1 (en) | 2014-11-04 | 2016-02-08 | Renold Gmbh | roller chain |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3023098A (en) * | 1958-11-03 | 1962-02-27 | Babcock & Wilcox Co | Low carbon ferritic stainless steel |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH123017A (en) * | 1926-11-22 | 1927-10-17 | Terni Ind Elettr | Metal alloy for hydraulic machinery parts. |
| DE2618305C3 (en) * | 1976-04-27 | 1981-02-12 | Fried. Krupp Huettenwerke Ag, 4630 Bochum | Use of a stainless steel as a material for straight or curved flat slat chains |
-
1979
- 1979-06-09 DE DE2923532A patent/DE2923532C2/en not_active Expired
-
1980
- 1980-05-29 NL NL8003119A patent/NL8003119A/en not_active Application Discontinuation
- 1980-06-06 ES ES492218A patent/ES8101127A1/en not_active Expired
- 1980-06-06 FR FR8012647A patent/FR2458598B1/en not_active Expired
- 1980-06-06 BE BE0/200946A patent/BE883704A/en not_active IP Right Cessation
- 1980-06-06 DK DK244880A patent/DK156176C/en active
- 1980-06-06 BR BR8003535A patent/BR8003535A/en unknown
- 1980-06-09 JP JP7674380A patent/JPS565954A/en active Pending
- 1980-06-09 GB GB8018826A patent/GB2051859B/en not_active Expired
- 1980-06-09 IT IT22660/80A patent/IT1131534B/en active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3023098A (en) * | 1958-11-03 | 1962-02-27 | Babcock & Wilcox Co | Low carbon ferritic stainless steel |
Also Published As
| Publication number | Publication date |
|---|---|
| ES492218A0 (en) | 1980-12-16 |
| IT8022660A0 (en) | 1980-06-09 |
| GB2051859A (en) | 1981-01-21 |
| GB2051859B (en) | 1983-01-19 |
| FR2458598A1 (en) | 1981-01-02 |
| FR2458598B1 (en) | 1985-10-31 |
| BE883704A (en) | 1980-10-01 |
| DE2923532B1 (en) | 1980-07-31 |
| ES8101127A1 (en) | 1980-12-16 |
| NL8003119A (en) | 1980-12-11 |
| BR8003535A (en) | 1981-01-05 |
| DK244880A (en) | 1980-12-10 |
| IT1131534B (en) | 1986-06-25 |
| JPS565954A (en) | 1981-01-22 |
| DK156176C (en) | 1989-12-04 |
| DE2923532C2 (en) | 1981-04-23 |
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