CS273812B1 - Method of anticorrosive hardenable steel thermal treatment - Google Patents
Method of anticorrosive hardenable steel thermal treatment Download PDFInfo
- Publication number
- CS273812B1 CS273812B1 CS120889A CS120889A CS273812B1 CS 273812 B1 CS273812 B1 CS 273812B1 CS 120889 A CS120889 A CS 120889A CS 120889 A CS120889 A CS 120889A CS 273812 B1 CS273812 B1 CS 273812B1
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- CS
- Czechoslovakia
- Prior art keywords
- less
- steel
- traces
- anticorrosive
- temperature
- Prior art date
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 15
- 239000010959 steel Substances 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims description 5
- 238000007669 thermal treatment Methods 0.000 title 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 4
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 4
- 239000011651 chromium Substances 0.000 claims abstract description 4
- 239000010949 copper Substances 0.000 claims abstract description 4
- 229910052802 copper Inorganic materials 0.000 claims abstract description 4
- 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 claims abstract description 4
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 4
- 239000011733 molybdenum Substances 0.000 claims abstract description 4
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 4
- 239000011574 phosphorus Substances 0.000 claims abstract description 4
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 4
- 239000010703 silicon Substances 0.000 claims abstract description 4
- 239000010936 titanium Substances 0.000 claims abstract description 4
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 4
- 239000012298 atmosphere Substances 0.000 claims abstract description 3
- 239000012535 impurity Substances 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 230000001681 protective effect Effects 0.000 claims abstract description 3
- 238000004804 winding Methods 0.000 claims abstract 2
- 238000010438 heat treatment Methods 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 239000011593 sulfur Substances 0.000 claims description 3
- 238000000137 annealing Methods 0.000 claims description 2
- 239000005864 Sulphur Substances 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Heat Treatment Of Sheet Steel (AREA)
Abstract
Description
Vynález se týká zpracování antikorozní vytvrditelné oceli kombinací tepelného zpracování a tváření za studená, pro výrobu pružin, například pro samonavíjecí automobilové pásy, u nichž je cíl získat vysokou pevnost, tvrdost a pružnost a současně vysokou odolnost proti únavě.The invention relates to the treatment of anticorrosive curable steel by a combination of heat treatment and cold forming, for the production of springs, for example, for self-retracting automotive belts, in which the object is to obtain high strength, hardness and elasticity while high fatigue resistance.
Ocel obsahující podle ČSN 417351 v hmotnostním složení stopy až 0,08 % uhlíku, 0,3 až 0,8 % manganu, stopy až 0,9 % křemíku, 15,5 až 17,0 % chrómu, 5,5 až 7,0 % niklu, 0,5 až 1,0 % titanu, stopy až 0,2 % hliníku a nečistoty jako méně než 0,45 % fosforu, méně než 0,035 % síry, méně než 0,03 % molybdenu a méně než 0,04 % mědi, se dosud za účelem získání vysoké pevnosti, tvrdosti a pružnosti, precipitačně žíhala buď stacionárně po dobu několika desítek minut až hodin v rozmezí 420 až 540 °C, nebo průběžně po dobu 10 až 60 s na teplotě 570 až 640 °C s podmínkou velké rychlosti ohřevu a ochlazování. Stacionárním způsobem vytvrzování se získá sice pevnost oceli až 1 800 MPa, ale při nižší odolnosti proti únavě, průběžným způsobem vytvrzování byla zase získána vysoká odolnost proti únavě, ale při pevnosti jen 1 300 až 1 550 MPa.Steel containing according to ČSN 417351 in the weight composition of traces up to 0.08% carbon, 0.3 to 0.8% manganese, traces up to 0.9% silicon, 15.5 to 17.0% chromium, 5.5 to 7, 0% nickel, 0.5 to 1.0% titanium, traces up to 0.2% aluminum and impurities such as less than 0.45% phosphorus, less than 0.035% sulfur, less than 0.03% molybdenum, and less than 0, 04% of copper, so far to obtain high strength, hardness and elasticity, has been precipitated annually either stationary for several tens of minutes to hours in the range 420 to 540 ° C, or continuously for 10 to 60 s at 570 to 640 ° C with high heating and cooling speed. Although a stationary curing process yields a steel strength of up to 1800 MPa, but with lower fatigue resistance, a continuous curing process in turn results in a high fatigue resistance, but with a strength of only 1,300 to 1,550 MPa.
Pro získání vysoké odolnosti proti únavě a současně pevnosti na 1 500 MPa u dané pásové oceli je uplatněn způsob zpracování podle vynálezu. Oeho podstata spočívá v tom, že se ocel za 15 až 180 s ohřeje na teplotu 500 až 620 °C, na této teplotě se žíhá 15 až 180 s v ochranné atmosféře nebo na vzduchu a za dobu 5 až 180 s se ochladí na teplotu okolí. Získaná vysoká zásoba plasticity se použije pro další tváření za studená s redukcí 5 až 85 % k dalšímu zpevnění oceli.In order to obtain a high fatigue resistance and at the same time a strength of 1500 MPa for a given strip steel, the treatment method according to the invention is applied. The principle is that the steel is heated to a temperature of 500 to 620 ° C in 15 to 180 s, annealed at this temperature for 15 to 180 s in a protective atmosphere or in air and cooled to ambient temperature for 5 to 180 s. The obtained high stock of plasticity is used for further cold forming with a reduction of 5 to 85% to further strengthen the steel.
Podle vynálezu byla získána vysoká odolnost oceli proti dynamické únavě při dosažení pevnosti až 1 850 MPa. Přitom byla zachována i vysoká pružnost a rovnoměrnost mechanických hodnot podél pásu.According to the invention, high resistance of the steel to dynamic fatigue was achieved with a strength of up to 1850 MPa. High elasticity and uniformity of mechanical values along the strip were also maintained.
Podle příkladného provedení byly podle vynálezu zhotoveny pásy pro výrobu pružin automobilových samonavíjecích pásů. Pásová ocel o hmotnostním složení 0,03 % uhlíku, 0,57 % manganu, 0,45 % křemíku, 16,39 % chrómu, 6,38 % niklu, 0,7 % titanu, 0,18 ¾ hliníku, 0,01 % fosforu, 0,008 % síry, 0,02 ’í molybdenu a 0,03 % mědi, o rozměru 0,28 x 7,5 mm byla žíhána 120 s v průběžné peci na teplotě 530 °C v ochranné atmosféře složené z 95 % dusíku a 5 % vodíku. Ohřev na teplotu trval 45 s, po vyžíhání byla ocel ochlazena na teplotu okolí za 90 s. Následovalo válcování za studená na stolici o průměru pracovních válců 50 mm s celkovým úběrem 50 !n. Docílená pevnost byla 1 750 MPa.According to an exemplary embodiment, belts have been made according to the invention for the production of springs for automotive retractor belts. Strip steel weighing 0.03% carbon, 0.57% manganese, 0.45% silicon, 16.39% chromium, 6.38% nickel, 0.7% titanium, 0.18 ¾ aluminum, 0.01 % phosphorus, 0.008% sulfur, 0.02% molybdenum and 0.03% copper, 0.28 x 7.5 mm in size, were annealed in a 120 ° C continuous oven at 530 ° C in a 95% nitrogen atmosphere and 5% hydrogen. Heating to the temperature lasted 45 s, after annealing the steel was cooled to ambient temperature in 90 s. This was followed by cold rolling on a mill with a working roll diameter of 50 mm with a total removal of 50 ! The achieved strength was 1,750 MPa.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS120889A CS273812B1 (en) | 1989-02-27 | 1989-02-27 | Method of anticorrosive hardenable steel thermal treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS120889A CS273812B1 (en) | 1989-02-27 | 1989-02-27 | Method of anticorrosive hardenable steel thermal treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS120889A1 CS120889A1 (en) | 1990-08-14 |
| CS273812B1 true CS273812B1 (en) | 1991-04-11 |
Family
ID=5345905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS120889A CS273812B1 (en) | 1989-02-27 | 1989-02-27 | Method of anticorrosive hardenable steel thermal treatment |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS273812B1 (en) |
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1989
- 1989-02-27 CS CS120889A patent/CS273812B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CS120889A1 (en) | 1990-08-14 |
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