AT145403B - Process for the production of a nickel-chromium steel suitable for the production of objects by stamping, pressing and other cold working. - Google Patents
Process for the production of a nickel-chromium steel suitable for the production of objects by stamping, pressing and other cold working.Info
- Publication number
- AT145403B AT145403B AT145403DA AT145403B AT 145403 B AT145403 B AT 145403B AT 145403D A AT145403D A AT 145403DA AT 145403 B AT145403 B AT 145403B
- Authority
- AT
- Austria
- Prior art keywords
- production
- nickel
- objects
- pressing
- stamping
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 229910018487 Ni—Cr Inorganic materials 0.000 title claims description 6
- 229910000831 Steel Inorganic materials 0.000 title claims description 6
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 title claims description 6
- 239000010959 steel Substances 0.000 title claims description 6
- 238000003825 pressing Methods 0.000 title claims description 5
- 238000005482 strain hardening Methods 0.000 title claims description 4
- 238000000034 method Methods 0.000 title claims description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 239000011651 chromium Substances 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 239000002253 acid Substances 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000010186 staining Methods 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Landscapes
- Heat Treatment Of Articles (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Herstellung eines für die Erzeugung von Gegenständen durch Stanzen, Pressen und andere Kaltbearbeitung geeigneten Nickel-Chromstahles.
Die Erfindung betrifft die Herstellung eines duktilen Nickel-Chromstahles für die Erzeugung von Gegenständen durch Stanzen, Pressen oder andere Kaltarbeit, welche korrosionsfest sein oder keine Fleckenbildung in Berührung mit den in Nahrungsmitteln enthaltenen Säuren erleiden oder beide Eigenschaften aufweisen sollen.
Erfindungsgemäss wird für die Herstellung einer grossen Anzahl zur Fleckenbildung neigender
Gegenstände, wie Metallausrüstungsgegenstände aller Art, ferner Gabeln, Löffel, Teller und andere Haushaltungsgegenstände, eine Nickel-Chromstahllegierung mit einem nicht über 0-2% gelegenen Kohlenstoffgehalt und einem Gehalt von je 11-5 bis 13% an Nickel und an Chrom verwendet, welcher erfindungsgemäss eine grosse Duktilität erteilt wird. indem man sie auf Temperaturen von 950 C bis 1090 C erhitzt und dann einer langsamen oder raschen Abkühlung unterwirft. Bevorzugt wird für diese Wärmebehandlung eine Temperatur zwischen 1000 und 1050 C.
Es ist bekannt, Gegenstände, wie Kessel, Rohre und Maschinenteile, die sehr widerstandsfähig gegen Säuren, insbesondere Salpetersäure sein und grosse Festigkeit besitzen müssen, aus wärme- behandelten Niekel-Chromstahllegierungen herzustellen, wofür aber nur innerhalb weiter Grenzen gelegene Zusammensetzungen und Temperaturintervalle angegeben worden sind.
Innerhalb der vorliegenden engen Grenzen der Zusammensetzung gelangt man aber vermittels der erfindungsgemässen Wärmebehandlung zu einem sehr duktilen Material, welches sehr widerstandsfähig gegen Korrosion und gegen die zur Fleckenbildung führende Einwirkung von in Lebensmitteln enthaltenen Säuren ist und in wirksamer und in wirtschaftlicher Weise kalt bearbeitet werden kann.
Es hat sich gezeigt, dass nach der bekannten Erichsen-Probe zur Bestimmung der maximalen Deformationsfähigkeit Bleche aus Messing, Zinn und andern Metallen, die bisher zur Herstellung der obgenannten Metallgegenstände verwendet wurden, eine Deformation von 10 bis 14 mm Tiefungswert zeigen. Die bekannten Nickel-Chromstahllegierungen, in bekannter Weise wärmebehandelt, zeigen eine maximale Deformation von 12 bis 14 mm Tiefungswert. Die erfindungsgemäss wärmebehandelten Legierungen von der angegebenen Zusammensetzung zeigen jedoch Tiefungswerte von 17 bis 20 mm. Diese Legierungen erleiden auch keine rasche Härtung durch Kaltarbeit, d. h. der Härtungseffekt der Kaltarbeit ist relativ klein.
Es ist dadurch eine weitgehende Kaltarbeit, wie beispielsweise Stanzen, Pressen u. dgl., ermöglicht, ohne dass ein Weichmachen und Anlassen erforderlich wird.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for the production of a nickel-chromium steel suitable for the production of objects by stamping, pressing and other cold working.
The invention relates to the production of a ductile nickel-chromium steel for the production of objects by stamping, pressing or other cold work which are to be corrosion-resistant or not to suffer from staining in contact with the acids contained in food or to have both properties.
According to the invention, there is a tendency towards staining for the production of a large number
Objects such as metal equipment of all kinds, as well as forks, spoons, plates and other household items, a nickel-chromium steel alloy with a carbon content not exceeding 0-2% and a content of 11-5 to 13% each of nickel and chromium, which according to the invention a great ductility is granted. by heating them to temperatures of 950 C to 1090 C and then subjecting them to slow or rapid cooling. A temperature between 1000 and 1050 C. is preferred for this heat treatment.
It is known to produce objects such as boilers, pipes and machine parts, which must be very resistant to acids, especially nitric acid, and which must have great strength, from heat-treated Niekel chromium steel alloys, for which, however, compositions and temperature intervals have only been given within wide limits .
However, within the present narrow composition limits, the heat treatment according to the invention leads to a very ductile material which is very resistant to corrosion and the staining effects of acids contained in foods and which can be cold-worked effectively and economically.
It has been shown that, according to the known Erichsen test for determining the maximum deformability, sheets made of brass, tin and other metals, which were previously used for the production of the above-mentioned metal objects, show a deformation of 10 to 14 mm. The known nickel-chromium steel alloys, heat-treated in a known manner, show a maximum deformation of 12 to 14 mm deepening value. However, the alloys heat-treated according to the invention and having the specified composition show cupping values of 17 to 20 mm. These alloys also do not suffer from rapid cold work hardening; H. the hardening effect of cold work is relatively small.
It is a largely cold work, such as punching, pressing and the like. Like., made possible without softening and tempering is required.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB145403X | 1927-12-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT145403B true AT145403B (en) | 1936-04-25 |
Family
ID=10043038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT145403D AT145403B (en) | 1927-12-31 | 1928-12-29 | Process for the production of a nickel-chromium steel suitable for the production of objects by stamping, pressing and other cold working. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT145403B (en) |
-
1928
- 1928-12-29 AT AT145403D patent/AT145403B/en active
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