CH168200A - Process for the hot forming of a eutectoid steel with a lamellar-pearlitic structure. - Google Patents
Process for the hot forming of a eutectoid steel with a lamellar-pearlitic structure.Info
- Publication number
- CH168200A CH168200A CH168200DA CH168200A CH 168200 A CH168200 A CH 168200A CH 168200D A CH168200D A CH 168200DA CH 168200 A CH168200 A CH 168200A
- Authority
- CH
- Switzerland
- Prior art keywords
- sep
- hot forming
- steel
- lamellar
- pearlitic structure
- Prior art date
Links
- 229910000831 Steel Inorganic materials 0.000 title claims description 10
- 239000010959 steel Substances 0.000 title claims description 10
- 238000000034 method Methods 0.000 title claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 239000011572 manganese Substances 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims 1
- 238000005096 rolling process Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 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
- 239000000463 material Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Heat Treatment Of Sheet Steel (AREA)
Description
Verfahren zur Warmverformung eines eutektoiden Stahls mit lamellar-perlitischem Gefüge. Es ist bereits vorgeschlagen worden, zum Herstellen von Gegenständen, bei denen es auf Verschleissfestigkeit ankommt, eutektoide Stähle mit lamellar-perlitischem Gefüge zu verwenden, die mindestens einen Doppel karbidbildner, wie Mangan, Chrom, Wolfram, Molpbdän oder Vanadin und einen Kohlen- stoffgehalt von unter 0,
9 % besitzen.
Es wurde gefunden, dass die Dehnung die ses Werkstoffes sowie der Widerstand gegen Stoss- und Schlagbeanspruchungen in uner wartet hohem Masse gesteigert werden, wenn die Endtemperatur der Formgebung nicht, wie es üblich ist, etwa 950--1000 C beträgt, sondern unterhalb 850 C liegt. Um die Wal zen und Pressen zu schonen und den Kraft bedarf niedrig zu halten, kann man die Warm formgebung in zwei Stufen durchführen, zwischen denen man das Werkstück sich ab kühlen lässt. In der ersten Stufe wird von den üblichen, hohen Anfangstemperaturen (1100-1150 ) ausgehend bis zu den normalen Endtemperaturen gewalzt und das Walzen vor dem Endstich beziehungsweise den letzten Stichen abgebrochen.
Hierauf überlässt man das Werkstück sich selbst, bis seine Tempe ratur etwa<B>8500</B> C beträgt, um es dann der Endverformung zu unterwerfen. Es ist von Vorteil, wenn der unterhalb<B>8500</B> C ange wendete Verformungsgrad nicht zu klein ist; er beträgt zweckmässig mindestens 10 /u. Die durch die niedrigen Endformgebungs- temperaturen bewirkte Verbesserung derEigen- schaften eines eutektoiden, verschleissfesten Stahles ist aus den in der nachfolgenden Tabelle wiedergegebenen Zahlen ersichtlich.
EMI0002.0001
<I>@chlagversucha <SEP> an <SEP> Schienen <SEP> S <SEP> 49</I>
<tb> Erster <SEP> Schlag <SEP> 5000 <SEP> mkg, <SEP> jeder <SEP> weitere <SEP> Schlag <SEP> 3000 <SEP> mkg, <SEP> Gewicht <SEP> des <SEP> Hammers <SEP> 1000 <SEP> kg,
<tb> vorgeschrieben: <SEP> 80 <SEP> mm <SEP> Durchbiegung. <SEP> Prüftemperatur <SEP> Durchbiegung <SEP> in <SEP> Millimetern <SEP> nach <SEP> Schlag
<tb> Grad <SEP> C <SEP> 1 <SEP> <B><U>1</U></B><U> <SEP> 2 <SEP> 1 <SEP> 3 <SEP> 1 <SEP> 4 <SEP> '5.
<SEP> 1 <SEP> 6 <SEP> 1 <SEP> 7 <SEP> 8 <SEP> 1 <SEP> 9 <SEP> 10 <SEP> <B>1</B> <SEP> 11</U>
<tb> +20 <SEP> 36 <SEP> 50 <SEP> 60 <SEP> 72 <SEP> 84 <SEP> 99 <SEP> -f Normal <SEP> oberhalb <SEP> <B>9500</B> <SEP> j <SEP> =1-10 <SEP> 34 <SEP> 46 <SEP> 54 <SEP> <B>.62</B> <SEP> 74 <SEP> 84 <SEP> 96
<tb> fertiggewalzt <SEP> - <SEP> 5 <SEP> 32 <SEP> 45 <SEP> 55 <SEP> 66 <SEP> 77 <SEP> 86 <SEP> -@ - <SEP> 5 <SEP> 33 <SEP> 46 <SEP> 57 <SEP> 6.g,.
<SEP> 79 <SEP> 89 <SEP> -@ - <SEP> 5 <SEP> 30 <SEP> 43 <SEP> 55 <SEP> 66 <SEP> 77 <SEP> 88 <SEP> 98 <SEP> 109 <SEP> 119 <SEP> 135 <SEP> -f Gemäss <SEP> Erfindung <SEP> - <SEP> 5 <SEP> 33 <SEP> 44 <SEP> 56 <SEP> 68 <SEP> 78 <SEP> 88 <SEP> 99 <SEP> 109 <SEP> 123 <SEP> 145
<tb> unterhalb <SEP> 850 <SEP> 0 <SEP> - <SEP> 5 <SEP> 34 <SEP> 49 <SEP> 62 <SEP> 75 <SEP> 88 <SEP> 100 <SEP> 114 <SEP> 127 <SEP> 140 <SEP> 158
<tb> fertiggewalzt <SEP> - <SEP> 6 <SEP> 36 <SEP> 51 <SEP> 65 <SEP> 80 <SEP> 93 <SEP> 106 <SEP> 119 <SEP> 133 <SEP> 148 <SEP> 165
<tb> -f- <SEP> = <SEP> gebrochen <SEP> ..
Das den Gegenstand der Erfindung bil dende Verfahren zur Warmverformung lässt sich mit demselben Erfolge durchführen; wenn derStahl einen verhältnismässig hohen Silizium gehalt von vorzugsweise 0,35-0,800o, einen Nickelgehalt bis zu 6-7 %, sowie einen Kupfergehalt bis zu 1,
5 % besitzt. Bei Ver- wendung von Mangan als Doppelkarbidbildner wird dieses zweckmässig in Mengen von etwa 0,6-0,8 % verwendet.
Process for the hot forming of a eutectoid steel with a lamellar-pearlitic structure. It has already been proposed to use eutectoid steels with a lamellar-pearlitic structure, which contain at least one double carbide-forming agent, such as manganese, chromium, tungsten, molybdenum or vanadium, and a carbon content of, for the production of objects for which wear resistance is important below 0,
9% own.
It has been found that the elongation of this material as well as the resistance to shock and impact loads are increased to an unexpectedly high degree if the final temperature of the molding is not, as is usual, about 950--1000 C, but below 850 C. lies. In order to protect the rollers and presses and to keep the power requirement low, hot forming can be carried out in two stages, between which the workpiece is allowed to cool. In the first stage, rolling starts at the usual high initial temperatures (1100-1150) up to the normal end temperatures and the rolling is stopped before the final pass or the last passes.
The workpiece is then left to its own devices until its temperature is around <B> 8500 </B> C, in order to then subject it to final deformation. It is advantageous if the degree of deformation applied below <B> 8500 </B> C is not too small; it is usefully at least 10 / u. The improvement in the properties of a eutectoid, wear-resistant steel brought about by the low final forming temperatures can be seen from the figures given in the table below.
EMI0002.0001
<I> @chlagversucha <SEP> on <SEP> rails <SEP> S <SEP> 49 </I>
<tb> First <SEP> blow <SEP> 5000 <SEP> mkg, <SEP> every <SEP> further <SEP> blow <SEP> 3000 <SEP> mkg, <SEP> weight <SEP> of the <SEP> hammer <SEP> 1000 <SEP> kg,
<tb> prescribed: <SEP> 80 <SEP> mm <SEP> deflection. <SEP> test temperature <SEP> deflection <SEP> in <SEP> millimeters <SEP> after <SEP> impact
<tb> Grade <SEP> C <SEP> 1 <SEP> <B><U>1</U></B> <U> <SEP> 2 <SEP> 1 <SEP> 3 <SEP> 1 < SEP> 4 <SEP> '5.
<SEP> 1 <SEP> 6 <SEP> 1 <SEP> 7 <SEP> 8 <SEP> 1 <SEP> 9 <SEP> 10 <SEP> <B> 1 </B> <SEP> 11 </ U >
<tb> +20 <SEP> 36 <SEP> 50 <SEP> 60 <SEP> 72 <SEP> 84 <SEP> 99 <SEP> -f normal <SEP> above <SEP> <B> 9500 </B> <SEP> j <SEP> = 1-10 <SEP> 34 <SEP> 46 <SEP> 54 <SEP> <B> .62 </B> <SEP> 74 <SEP> 84 <SEP> 96
<tb> finish-rolled <SEP> - <SEP> 5 <SEP> 32 <SEP> 45 <SEP> 55 <SEP> 66 <SEP> 77 <SEP> 86 <SEP> - @ - <SEP> 5 <SEP> 33 <SEP> 46 <SEP> 57 <SEP> 6.g ,.
<SEP> 79 <SEP> 89 <SEP> - @ - <SEP> 5 <SEP> 30 <SEP> 43 <SEP> 55 <SEP> 66 <SEP> 77 <SEP> 88 <SEP> 98 <SEP> 109 <SEP> 119 <SEP> 135 <SEP> -f According to <SEP> invention <SEP> - <SEP> 5 <SEP> 33 <SEP> 44 <SEP> 56 <SEP> 68 <SEP> 78 <SEP> 88 <SEP> 99 <SEP> 109 <SEP> 123 <SEP> 145
<tb> below <SEP> 850 <SEP> 0 <SEP> - <SEP> 5 <SEP> 34 <SEP> 49 <SEP> 62 <SEP> 75 <SEP> 88 <SEP> 100 <SEP> 114 <SEP > 127 <SEP> 140 <SEP> 158
<tb> finish-rolled <SEP> - <SEP> 6 <SEP> 36 <SEP> 51 <SEP> 65 <SEP> 80 <SEP> 93 <SEP> 106 <SEP> 119 <SEP> 133 <SEP> 148 <SEP > 165
<tb> -f- <SEP> = <SEP> broken <SEP> ..
The bil Dende method for hot forming can be carried out with the same success; if the steel has a relatively high silicon content of preferably 0.35-0.800o, a nickel content of up to 6-7%, and a copper content of up to 1,
5% owns. When using manganese as a double carbide former, it is expedient to use it in amounts of about 0.6-0.8%.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE168200X | 1932-03-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH168200A true CH168200A (en) | 1934-03-31 |
Family
ID=5687085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH168200D CH168200A (en) | 1932-03-09 | 1933-03-06 | Process for the hot forming of a eutectoid steel with a lamellar-pearlitic structure. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH168200A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1119311B (en) * | 1958-12-27 | 1961-12-14 | Hoesch Ag | Steel for grinding bodies, grinding rods and mill armor |
-
1933
- 1933-03-06 CH CH168200D patent/CH168200A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1119311B (en) * | 1958-12-27 | 1961-12-14 | Hoesch Ag | Steel for grinding bodies, grinding rods and mill armor |
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