PL117273B3 - Steel for chemical-heat treatment - Google Patents
Steel for chemical-heat treatment Download PDFInfo
- Publication number
- PL117273B3 PL117273B3 PL20318277A PL20318277A PL117273B3 PL 117273 B3 PL117273 B3 PL 117273B3 PL 20318277 A PL20318277 A PL 20318277A PL 20318277 A PL20318277 A PL 20318277A PL 117273 B3 PL117273 B3 PL 117273B3
- Authority
- PL
- Poland
- Prior art keywords
- steel
- chemical
- heat treatment
- hardness
- weight
- Prior art date
Links
- 229910000831 Steel Inorganic materials 0.000 title claims description 10
- 239000010959 steel Substances 0.000 title claims description 10
- 238000010438 heat treatment Methods 0.000 title description 2
- 239000011651 chromium Substances 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 239000011572 manganese Substances 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 229910052721 tungsten Inorganic materials 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 239000011733 molybdenum Substances 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 4
- 239000010937 tungsten Substances 0.000 claims description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910052720 vanadium Inorganic materials 0.000 description 3
- 229910000997 High-speed steel Inorganic materials 0.000 description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 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 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Landscapes
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Description
Przedmiotem wynalazku jest ulepszenie stali do obróbki cieplno-chemicznej, zastepujacej stale szyb¬ kotnace i stale do pracy na goraco i/lub 'na zimno, oraz nadajacej sie równiez do wytwarzania nie¬ których czesci maszyn, wedlug patentu nr 81747.The object of the invention is to improve a thermo-chemical treatment steel, replacing high-speed steels and hot and / or cold steels, and also suitable for the production of certain machine parts, according to patent no. 81747.
Przedmiotem wynalazku opatentowanego za nr 81747 jest stal niskostopowa, która posiada cechy stali szybkotnacych, zawierajaca 1,5 do 2,6% krzemu, 1 do 1,6% wegla, 1 do 2% molibdenu, 3 do 4% wolframu, 3,5 do 5% chromu, 0,4 do 0,8% man¬ ganu i 1,6 do 2,4% wanadu, przy czym wzajemna zaleznosc tych skladników jest wyrazona wzorem 36 < 1,4 (1,5 Si + 0,92 C) + 1,67 (1,4 Mo + 2,4 W) + + 1,33 (3,4 Cr+ 0,3 Mn) + 1,83 V < 58 Stal ta charakteryzuje sie zwiekszona twardoscia ogólna wskutek wzmocnienia jej podloza przy rów¬ noczesnym zmniejszeniu ilosci fazy weglikowej.The subject of the invention patented under No. 81747 is low-alloy steel, which has the characteristics of high-speed steels, containing 1.5 to 2.6% silicon, 1 to 1.6% carbon, 1 to 2% molybdenum, 3 to 4% tungsten, 3.5 to 5% of chromium, 0.4 to 0.8% of manganese and 1.6 to 2.4% of vanadium, the mutual dependence of these components being expressed by the formula 36 <1.4 (1.5 Si + 0.92 C) + 1.67 (1.4 Mo + 2.4 W) + + 1.33 (3.4 Cr + 0.3 Mn) + 1.83 V <58 This steel is characterized by increased overall hardness due to the reinforcement of its base while reducing the amount of the carbon phase.
Podwyzszenie twardosci podloza uzyskuje sie przez zachowanie zaleznosci 4 < 1,4 (1,5 Si + 0,92 C)< 8 Wtórna twardosc po austenityzowaniu w tempe¬ raturze 1000 do 1200°C zachowuje wartosc 60 do 67 HRC, ziarno wedlug skali Graffa 8 do 16 w za¬ kresie temperatur 500 do 600°C.Increasing the hardness of the substrate is obtained by maintaining the relationship 4 <1.4 (1.5 Si + 0.92 C) <8 Secondary hardness after austenitizing at the temperature of 1000 to 1200 ° C retains the value of 60 to 67 HRC, grain according to the Graff scale 8 to 16 in the temperature range of 500 to 600 ° C.
Stal wedlug wynalazku zawierajaca 1 do 1,6% wegla, 1,5 do 2,6% krzemu, 1 do 2% molibdenu, 10 15 20 30 3 do 4% wolframu, 3,5 do 5% chromu, 0,4 do 0,8% manganu, 1,6 do 2,4% wanadu, charakteryzuje sie tym ze zawiera dodatek azotu w ilosci 0,02 do 0,26%, przy czym wzajemna zaleznosc tych sklad¬ ników jest wyrazona wzorem: 36 < 1,4 (1,5 Si + 0,92 C) + 1,67 (1,4 Mo + 2,4 W) + + 1,33 (3,4 Cr + 0,3 Mn) + 1,83 (V + 0,12 N) < 59 Struktura jej osnowy jest okreslona zaleznoscia 4 < 1,4 (1,5 Si + 0,92 C)< 8, przy czym wielkosc ziarna wedlug skali Snyder Graffa okreslona jest zaleznoscia: 8<400N<80 Nieznaczny dodatek azotu w skali wedlug wy¬ nalazku, nie majacy wiekszego wplywu na pod¬ niesienie ogólnej zawartosci skladników stopowych, w porównaniu ze skladem stali wedlug patentu nr 81747, powoduje znaczne rozszerzenie tempe¬ ratur austenityzowania, nawet do 1200°C bez oba¬ wy nadmiernego wzrostu ziarna. W zwiazku z tym odpuszczalnosc, tj zachowanie wtórnej twardosci (wygrzewanie w temperaturze 620°C w ciagu 4 go¬ dzin) stali wedlug wynalazku okreslona jest zalez¬ noscia: 56 < 400 N < 66 117 273117 273 Przedmiot wynalazku zostal przedstawiony po¬ nizej w przykladzie wykonania.The steel according to the invention containing 1 to 1.6% carbon, 1.5 to 2.6% silicon, 1 to 2% molybdenum, 10 15 20 30 3 to 4% tungsten, 3.5 to 5% chromium, 0.4 to 0.8% of manganese, 1.6 to 2.4% of vanadium, characterized by the fact that it contains a nitrogen addition of 0.02 to 0.26%, the mutual dependence of these components is expressed by the formula: 36 <1, 4 (1.5 Si + 0.92 C) + 1.67 (1.4 Mo + 2.4 W) + + 1.33 (3.4 Cr + 0.3 Mn) + 1.83 (V + 0.12 N) <59 The structure of its matrix is determined by the relationship 4 <1.4 (1.5 Si + 0.92 C) <8, where the grain size according to the Snyder Graff scale is defined by the relationship: 8 <400N <80 Insignificant the addition of nitrogen in the scale according to the invention, having no greater effect on increasing the total content of alloying elements, compared to the steel composition according to patent No. 81747, causes a significant extension of the austenitizing temperatures, even up to 1200 ° C, without both exaggerated grain growth. Therefore, the permeability, i.e. the maintenance of secondary hardness (heating at 620 ° C for 4 hours) of the steel according to the invention is determined by the following formula: 56 <400 N <66 117 273 117 273 The subject of the invention is presented below in an example of execution.
Próbki stali kutej KW12 zawierajacej 1,15% C, 4,4% Cr, 3,2% W, 1,7% V, 1,3% Mo, 0,4% Mn, 2,05% Si i 0,037% N po zachartowaniu z tempera¬ tury 1150°C mialy twardosc 60 HRC i wielkosc ziarna wedlug skali Graffa 12. Po odpuszczeniu w temperaturze 550°C w ciagu 2 godzin mialy twar¬ dosc 64 HRC.KW12 forged steel samples containing 1.15% C, 4.4% Cr, 3.2% W, 1.7% V, 1.3% Mo, 0.4% Mn, 2.05% Si and 0.037% N after quenching at a temperature of 1150 ° C., they had a hardness of 60 HRC and a grain size according to the Graff scale of 12. After tempering at 550 ° C. for 2 hours, they had a hardness of 64 HRC.
Po próbie odpuszczalnosci to jest wygrzewaniu w temperaturze 620°C w ciagu 4 godzin mialy twar¬ dosc 57 HRC. 10 Zastrzezenie patentowe Stal do obróbki ciaplno-chemicznej, zawierajaca wagowo 1,0 do 1,6% wegla, 1,5 do 2,6% (krzemu, 1 do 2% molibdenu, 3 do 4% wolframu, 3,5 do 5% chromu, 0,4 do 0,8% manganu i 1,6 do 2,4% wa¬ nadu, reszta zelazo i nieuniknione zanieczyszczenia, wedlug patentu nr 81747, znamienna tym, ze za¬ wiera dodatek azotu w ilosci 0,02 do 0,26%, przy czym wzajemna zaleznosc tych skladników jest wyrazona wzorem 36 < 1,4 (1,5 Si + 0,92 C) + + 1,67 (1,4 Mo+ 2,4 W)+ 1,33 (3,4 Cr + 0,3 Mn) + + 1,83 (V+0,12N)<59.After the test of solubility, that is, annealing at the temperature of 620 ° C for 4 hours, the hardness was 57 HRC. 10 Patent claim Steel for high-chemical treatment, containing 1.0 to 1.6% by weight of carbon, 1.5 to 2.6% (silicon, 1 to 2% molybdenum, 3 to 4% tungsten, 3.5 to 5%) % chromium, 0.4 to 0.8% manganese and 1.6 to 2.4% weight, the remainder iron and unavoidable impurities, according to patent No. 81747, characterized in that it contains a nitrogen addition of 0.02 up to 0.26%, while the mutual dependence of these components is expressed by the formula 36 <1.4 (1.5 Si + 0.92 C) + + 1.67 (1.4 Mo + 2.4 W) + 1.33 (3.4 Cr + 0.3 Mn) + + 1.83 (V + 0.12N) <59.
LDA — Zaklad 2 — zam. 675/82/11 110 egz.LDA - Plant 2 - order 675/82/11 110 copies
Cena 100 zlPrice: PLN 100
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL20318277A PL117273B3 (en) | 1977-12-21 | 1977-12-21 | Steel for chemical-heat treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL20318277A PL117273B3 (en) | 1977-12-21 | 1977-12-21 | Steel for chemical-heat treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PL203182A1 PL203182A1 (en) | 1979-07-16 |
| PL117273B3 true PL117273B3 (en) | 1981-07-31 |
Family
ID=19986370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL20318277A PL117273B3 (en) | 1977-12-21 | 1977-12-21 | Steel for chemical-heat treatment |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL117273B3 (en) |
-
1977
- 1977-12-21 PL PL20318277A patent/PL117273B3/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| PL203182A1 (en) | 1979-07-16 |
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