DE747301C - Manufacture of items that require high resistance to attack by hydrochloric or sulfuric acid at elevated temperatures, with the exception of boiling sulfuric acid - Google Patents

Manufacture of items that require high resistance to attack by hydrochloric or sulfuric acid at elevated temperatures, with the exception of boiling sulfuric acid

Info

Publication number
DE747301C
DE747301C DEK143006D DEK0143006D DE747301C DE 747301 C DE747301 C DE 747301C DE K143006 D DEK143006 D DE K143006D DE K0143006 D DEK0143006 D DE K0143006D DE 747301 C DE747301 C DE 747301C
Authority
DE
Germany
Prior art keywords
sulfuric acid
manufacture
attack
hydrochloric
exception
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEK143006D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Krupp Stahl AG
Original Assignee
Krupp Stahl AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Krupp Stahl AG filed Critical Krupp Stahl AG
Priority to DEK143006D priority Critical patent/DE747301C/en
Application granted granted Critical
Publication of DE747301C publication Critical patent/DE747301C/en
Expired legal-status Critical Current

Links

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
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F15/00—Other methods of preventing corrosion or incrustation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Description

Herstellung von Gegenständen, die eine hohe Widerstandsfähigkeit gegen den Angriff von Salz- oder Schwefelsäure bei erhöhter Temperatur, ausgenommen siedende Schwefelsäure, erfordern Die vorliegende Erfindung bezieht sich auf die Herstellung von Gegenständen (z. B. Gefäßen, Rohren, Maschinenteilen usw.), die eine hohe Widerstandsfähigkeit gegen den Angriff von Salz- oder Schwefelsäure oder deren Lösungen bei erhöhter Temperatur bis zu I2o° C, ausgenommen siedende Schwefelsäure, erfordern. Diese Gegenstände werden erfindungsgemäß aus Eisen- oder Stahllegierungen hergestellt, die etwa g bis 2o °p Chrom, I2 bis 24%Nickel, bis I % Kohlenstoff, I bis 12 °/o Kupfer und gleichzeitig o,5 bis Io % Molybdän enthalten.Manufacture of items that are highly resistant to attack by hydrochloric or sulfuric acid at elevated temperatures, with the exception of boiling ones Sulfuric acid, require The present invention relates to manufacturing of objects (e.g. vessels, pipes, machine parts, etc.) that have a high level of resistance against the attack of hydrochloric or sulfuric acid or their solutions at increased Temperature up to I2o ° C, except for boiling sulfuric acid, require. These items are made according to the invention from iron or steel alloys, which have about g up to 20 ° p chromium, I2 up to 24% nickel, up to 1% carbon, 1 up to 12 ° / o copper and at the same time contain 0.5 to 10% molybdenum.

Es sind bereits Gegenstände aus Chromnickelstahllegierungen bekannt, die eine hohe Korrosionsbeständigkeit besitzen. Diese Legierungen bzw. die daraus hergestellten Gegenstände sind jedoch insbesondere dann nicht in zufriedenstellender Weise beständig, wenn es sich um den Angriff von Salz- oder Schwefelsäure oder deren Lösungen bei erhöhter Temperatur handelt. Wie eingehende Versuche ergeben haben, erlangen Chromnickelstahllegierungen mit ä bis 2o % Chrom, Iz bis 24 °% Nickel und bis I % Kohlenstoff erst durch einen Zusatz von I bis I2 % Kupfer und o,5 bis Io °% 2Molybdän eine besonders hohe Widerstandsfähigkeit gegen den Angriff von Salz- oder Schwefelsäure oder deren Lösungen bei erhöhter Temperatur und weisen daneben besonders gute Festigkeitseigenschaften auf. Besonders gute Ergebnisse werden beispielsweise mit Legierungen erzielt, die etwa 8 bis I,5 % Chrom, I6 bis 22 % Nickel, 0,05 bis o,4o °/o Kohlenstoff, 2 bis 5 °/0 Kupfer und I bis 5 °/o Molybdän enthalten.There are already objects made of chrome-nickel steel alloys known, which have a high resistance to corrosion. These alloys or those from them However, manufactured articles are not particularly satisfactory Way resistant when it comes to attack by hydrochloric or sulfuric acid or theirs Solutions at elevated temperature acts. As detailed tests have shown, obtain chromium-nickel steel alloys with up to 2o% chromium, Iz up to 24 °% nickel and up to 1% carbon only through the addition of 1 to 12% copper and 0.5 to 10% °% 2Molybdenum has a particularly high resistance to attack by salt or sulfuric acid or its solutions at elevated temperature and have next to it particularly good strength properties. For example, particularly good results will be achieved with alloys containing about 8 to 1.5% chromium, 16 to 22% nickel, 0.05 to Contains o.4o per cent carbon, 2 to 5 per cent copper and 1 to 5 per cent molybdenum.

Gleich gute Ergebnisse werden erreicht, wenn das Nickel ganz oder teilweise durch Kobalt ersetzt wird. Günstig wirken sich ferner eigenschaftsverbessernde Zusätze von Silizium, Titan, Vanadium. Zirkon. Silber, Tantal und Niob in Mengen von etwa o,I bis 6 °/o einzeln oder gemischt aus.Equally good results are achieved if the nickel is whole or is partially replaced by cobalt. Property-improving properties also have a beneficial effect Additions of silicon, titanium, vanadium. Zircon. Silver, tantalum and niobium in abundance from about 0.1 to 6% individually or mixed.

Durch eine Erhitzung auf etwa iooo bis 1300° C und anschließende Abkühlung beispielsweise in Wasser, Ö1 oder Luft erhalten die fraglichen Legierungen besonders gute niechanischeEigenschaften, z. B. große Zähigkeit und Bearbeitbarleit. Auch wird die chemische Beständigkeit durch diese Wiirmelbehandlungnoch weiter verbessert.By heating it to around 1000 to 1300 ° C and then cooling it down The alloys in question are particularly preserved in water, oil or air, for example good mechanical properties, e.g. B. great toughness and machinability. Even becomes the chemical Resistance due to this Wiirmel treatment further improved.

Es ist bereits torgeschlagen worden - dieser Vorschlag gehtört-jedoch nicht zun Stand der Technik -, Gegenstände, die bogen einen Angriff durch siedende Schwefelsäure bestäindig sein sollen. aus Stahllegierungen mit i25 bis 25% ° Chrom, I2.5 bis i 7 % Nickel, h4 zu o,5 %i Kohlenstoff, I,d his 4% Kupfer und l I.2 bis Io % Molybdä n anzufertigen. D Herstellung solcher Gegenstände gehört nicht zurre Gegenstand der vorliegenden Erfindung.It has already been beaten - but this suggestion will not work not prior art, objects that bent an attack by boiling Sulfuric acid should be resistant. made of steel alloys with i25 to 25% ° chrome, I2.5 to i 7% nickel, h4 to 0.5% i carbon, I, d to 4% copper and l I.2 to Io% molybdenum. D The production of such items is not part of the deal Subject of the present invention.

Claims (2)

PATENTANSPRÜCHE: i. Herstellung von Gegenständen (z. B. Gefißan, Rohren. Maschinenteilen usw.). die eisne holle Widerstandsfähigkeit gegen den Angriff von Salz- oder Schwefelsä ure oder deren Lösungen hei erhöhter Temperatur (bis zu I2o° C), ausgsnommen sielende Schwefelsäure, erfordern, dadurch gekennzeichnet, dalß Eisen- oder Stahllegierungen verwendet werden, dlie etwa 8 his 20 % Chrom, I2 bis 24 % Nickel, bis t % Kohlenstoff, i bis 1,2% Kupfer undsf gleichzeitig o,5 bis Io % Molybdän äntltalten. PATENT CLAIMS: i. Manufacture of objects (e.g. vessels, pipes. Machine parts, etc.). die eisne holle resilience to the attack of Hydrochloric or sulfuric acid or their solutions at elevated temperatures (up to 12o ° C), with the exception of sulfuric acid, require, characterized in that Iron or steel alloys are used, dlie about 8 to 20% chromium, I2 to 24% nickel, up to t% carbon, 1 to 1.2% copper and sf at the same time 0.5 to 10 % Contain molybdenum. 2. Herstellung von Gegenstäsden nach Anspruch i, dadurch gekennzeichnet, 4aß3 Eisen- oder Stahllegierungen verwendet werden, die 8 bis i 5 % Chrom, IC bis 2a % Nickel, o,o5 bis o,do % Kohlenstoff, i bis 5 % Kupfer und i bis 5% Mo1ybdän enthalten. Zur Abgrenzung des Ansnekdungsgegenstandes vorn Stand der Technik sind itm Erteilungsverfahren folgende Druckschriften in Betracht gezogen worders: Wische Patentschrift ..... .. Nr. 3I3 47I; französische Patentschriften - 688 359, 784293-2. Manufacture of Gegenstäsden according to claim i, characterized in that 4aß3 iron or steel alloys are used, the 8 to i 5% chromium, IC to 2a% nickel, o, o5 to o, do% carbon, i to 5% copper and Contains up to 5% molybdenum. In order to distinguish the subject matter from the state of the art, the following publications have been taken into account in the granting procedure: Wische Patentschrift ..... .. No. 3I3 47I; French patents - 688 359, 784293 -
DEK143006D 1936-07-19 1936-07-19 Manufacture of items that require high resistance to attack by hydrochloric or sulfuric acid at elevated temperatures, with the exception of boiling sulfuric acid Expired DE747301C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK143006D DE747301C (en) 1936-07-19 1936-07-19 Manufacture of items that require high resistance to attack by hydrochloric or sulfuric acid at elevated temperatures, with the exception of boiling sulfuric acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK143006D DE747301C (en) 1936-07-19 1936-07-19 Manufacture of items that require high resistance to attack by hydrochloric or sulfuric acid at elevated temperatures, with the exception of boiling sulfuric acid

Publications (1)

Publication Number Publication Date
DE747301C true DE747301C (en) 1944-11-23

Family

ID=7250309

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK143006D Expired DE747301C (en) 1936-07-19 1936-07-19 Manufacture of items that require high resistance to attack by hydrochloric or sulfuric acid at elevated temperatures, with the exception of boiling sulfuric acid

Country Status (1)

Country Link
DE (1) DE747301C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3720055A1 (en) * 1986-07-03 1988-01-07 Haynes Int Inc CORROSION-RESISTANT AND WEAR-RESISTANT STEEL
DE3901028A1 (en) * 1989-01-14 1990-07-19 Bayer Ag NON-RESISTANT MOLDING AND CASTING MATERIALS AND WELDING ADDITIVES FOR BUILDING COMPONENTS ASSOCIATED WITH HOT, CONCENTRATED SWISS ACIDS

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB313471A (en) * 1928-03-10 1929-06-10 Robert Abbott Hadfield Improvements in or relating to alloys
FR688359A (en) * 1929-01-22 1930-08-22 Int Nickel Co Improvements to iron, chromium and nickel alloys
FR784293A (en) * 1934-01-20 1935-07-22 Alloy Res Corp Advanced ferrous alloy

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB313471A (en) * 1928-03-10 1929-06-10 Robert Abbott Hadfield Improvements in or relating to alloys
FR688359A (en) * 1929-01-22 1930-08-22 Int Nickel Co Improvements to iron, chromium and nickel alloys
FR784293A (en) * 1934-01-20 1935-07-22 Alloy Res Corp Advanced ferrous alloy

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3720055A1 (en) * 1986-07-03 1988-01-07 Haynes Int Inc CORROSION-RESISTANT AND WEAR-RESISTANT STEEL
DE3901028A1 (en) * 1989-01-14 1990-07-19 Bayer Ag NON-RESISTANT MOLDING AND CASTING MATERIALS AND WELDING ADDITIVES FOR BUILDING COMPONENTS ASSOCIATED WITH HOT, CONCENTRATED SWISS ACIDS

Similar Documents

Publication Publication Date Title
DE1952877C3 (en) Process for the production of GuO parts from a cast nickel alloy
DE69329004T2 (en) High strength and corrosion resistant stainless steel and treatment process
DE3225667C2 (en)
DE1558668C3 (en) Use of creep-resistant, stainless austenitic steels for the production of sheet metal
US3649259A (en) Titanium alloy
DE747301C (en) Manufacture of items that require high resistance to attack by hydrochloric or sulfuric acid at elevated temperatures, with the exception of boiling sulfuric acid
DE2135179A1 (en) Stainless nickel-chromium steel with high resistance to stress corrosion
DE1558873A1 (en) Welding electrode for the production of wear-resistant and corrosion-resistant armoring
AT134247B (en) Items made of steel alloys that require high fatigue strength, e.g. B. Containers, pipes, boiler components, etc.
AT143301B (en) Precipitation-hardenable iron alloys, in particular for the manufacture of hot tools.
AT150290B (en) Copper-chromium-manganese-iron alloy for the same purpose as nickel silver u. like alloys.
AT395018B (en) METHOD FOR PRODUCING A CORROSION-RESISTANT FERRITIC-AUSTENITIC STEEL
DE852453C (en) Copper alloys
DE941491C (en) Ferritic or ferritic-pearlitic steels for objects that should have a high heat resistance of over 800
CH492792A (en) Use of a nickel alloy for the manufacture of tough hot and cold formable articles which are exposed to the attack of combustion products of vanadium and / or sulfur containing fuels at temperatures above 500 ° C
DE1483233A1 (en) Titanium alloy
DE666750C (en) Chrome-nickel alloy
AT150991B (en) Steel alloy for hot work tools and similar items requiring high temperature strength.
DE689070C (en) Alloy which can be hardened by precipitation
AT278886B (en) Austenitic, stainless steels for the manufacture of valves for internal combustion engines by cold forming
AT140210B (en) Precipitation hardening alloys.
AT159309B (en) Use of a heat-treated steel alloy for dynamically highly stressed components with low notch sensitivity.
DE643364C (en) Use of alloys containing palladium
DE824554C (en) Process for the manufacture of capacitor parts
CH265897A (en) Copper alloy and process for its manufacture.