DE627169C - Process for the production of workpieces made of iron and steel that are insensitive to cold scalding, blue cracking and aging - Google Patents

Process for the production of workpieces made of iron and steel that are insensitive to cold scalding, blue cracking and aging

Info

Publication number
DE627169C
DE627169C DER72011D DER0072011D DE627169C DE 627169 C DE627169 C DE 627169C DE R72011 D DER72011 D DE R72011D DE R0072011 D DER0072011 D DE R0072011D DE 627169 C DE627169 C DE 627169C
Authority
DE
Germany
Prior art keywords
iron
steel
aging
blue
insensitive
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
DER72011D
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.)
HERMAN JOHAN VAN ROYEN DR
Original Assignee
HERMAN JOHAN VAN ROYEN DR
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 HERMAN JOHAN VAN ROYEN DR filed Critical HERMAN JOHAN VAN ROYEN DR
Priority to DER72011D priority Critical patent/DE627169C/en
Application granted granted Critical
Publication of DE627169C publication Critical patent/DE627169C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Heat Treatment Of Steel (AREA)

Description

Verfahren zur Herstellung von gegen Kaltsprödigkeit, Blaubrüchigkeit und Altern unempfindlichen Werkstücken aus Eisen und Stahl Die Erfindung bezieht sich auf ein Verfahren zur Erzeugung von Werkstoff (Eisen oder Stahl) geringer Kaltsprödigkeit und Blaubrüchigkeit sowie geringer Neigung zum Sprödewerden durch natürliche oder künstliche Alterung.Process for the production of against cold brittleness, blue brittleness and aging insensitive workpieces made of iron and steel The invention relates on a process for the production of material (iron or steel) with low cold brittleness and blue fragility as well as a low tendency to become brittle due to natural or artificial aging.

Es hat sich ergeben, daß es gelingt, weitgehend alterungsfreies, gegen Kaltsprädiglkeit und Blaubrüchigkeit im. hohem Maße unempfindliches Material (Eisen und Stahl) herzustellen, wenn man von einem Werkstoß ausgeht, der wie folgt erschmolzen wurde: Nach dem Frischen wird gegebenenfalls unter einer neuen Schlackendecke ein reduzierend wirkendes, nicht kohlendes Gas, -das bei seiner Oxydation keine Volumenvermehrung erleidet, ä. B. Gasgemische aus Kohlenoxyd, Kohlensäure und Stickstoff, durch die Schmelze hindurchgeblasen. Der Werkstoff wird dann im Verlaufe des formgebenden Arbeitsganges bei unterhalb des -Punktes liegenden Temperaturen weitgehend, d. h. mindestens um 200/0, verformt und darauf normalisierend geglüht. Der auf diese Weise fertiggestellte Baustoff eignet sich besonders für Konstruktionsteile, wie z. B. Kesselbleche, Schiftba.uma.terialien, Brückenhauteile, allgemein also für solche Baustoffe, die nach der letzten Verformung durch Nieten, Kaltpressen, Hämmern, Stanzen, Bördeln, joggeln u. dgl. nicht mehr durch Ausglühen von den durch diese Behandlung erlittenen nachteiligen Folgen befreit werden können oder sollen. Der Ausgangswerkstoff und die Fertigerzeugnisse sind homogen, duktil und korrosionsfest.It has been found that it succeeds, largely non-aging, against Cold predigibility and blue brittleness in the. highly insensitive material (iron and steel), assuming a work batch that melted as follows was: After freshening, a new slag cover may be used reducing, non-carbonizing gas, which does not increase in volume when it is oxidized suffers, e. B. gas mixtures of carbon dioxide, carbonic acid and nitrogen, through the Blown melt through. The material is then in the course of the shaping Operation at temperatures below the point largely, d. H. at least 200/0, deformed and then annealed to normalize. That way finished building material is particularly suitable for construction parts, such as B. Boiler plates, Schiftba.uma.terialien, bridge skin parts, generally for such Building materials that, after the last deformation by riveting, cold pressing, hammering, punching, No longer beading, jogging and the like by annealing the resulting treatment suffered adverse consequences can or should be exempted. The starting material and the finished products are homogeneous, ductile and corrosion resistant.

Am Wesen der Erfindung wird nichts geändert, wenn in der ersten Verfahrensstufe ein Werkstoff hergestellt wird, der veredelnde Bestandteile, wie Wolfram, Molybdän, Vanadin, Nickel, lobalt, enthält.The essence of the invention is not changed if in the first process stage a material is produced that contains refining components such as tungsten, molybdenum, Contains vanadium, nickel, lobalt.

Claims (2)

PATENTANSPRUCH: 'Verfahren. zur Herstellung von gegen. Kaltsprödigkeit, Blaubrüchigkeit und Altern. unempfindlichen Werkstücken aus Eisem. und Stahl, gekennzeichnet durch die Vereinigung der nachstehenden Maßnahmen i.. Als Ausgangswerkstoff wird Eisen oder Stahl genommen, der nach dem Frischen, gegebenenfalls unter einer neuen Schlackendecke, durch Hindurchblasen eines reduzierend wirkenden, nicht kohlenden Gases, das bei -seiner Oxydation keine Volumenvermehrung erleidet, fertiggemacht wurde. PATENT CLAIM: 'Procedure. for the production of against. Cold brittleness, Blue fragility and aging. insensitive workpieces made of iron. and steel, marked by combining the following measures i .. As a starting material is Iron or steel taken after freshening, possibly under a new one Slag cover, by blowing through a reducing, non-carbonizing one Gas that does not suffer any increase in volume when it is oxidized became. 2. Die aus diesem Ausgangswerkstoff hergestellten Werkstücke werden bei einer unterhalb des @1y-Punktes liegenden Temperatur weitgehend, d. h. mindestens um 200/0, verformt und ,alsdann normalisierend geglüht.2. The workpieces made from this starting material are at a largely below the @ 1y point, d. H. at least by 200/0, deformed and then annealed to normalize.
DER72011D 1927-08-10 1927-08-10 Process for the production of workpieces made of iron and steel that are insensitive to cold scalding, blue cracking and aging Expired DE627169C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER72011D DE627169C (en) 1927-08-10 1927-08-10 Process for the production of workpieces made of iron and steel that are insensitive to cold scalding, blue cracking and aging

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER72011D DE627169C (en) 1927-08-10 1927-08-10 Process for the production of workpieces made of iron and steel that are insensitive to cold scalding, blue cracking and aging

Publications (1)

Publication Number Publication Date
DE627169C true DE627169C (en) 1936-03-28

Family

ID=7414279

Family Applications (1)

Application Number Title Priority Date Filing Date
DER72011D Expired DE627169C (en) 1927-08-10 1927-08-10 Process for the production of workpieces made of iron and steel that are insensitive to cold scalding, blue cracking and aging

Country Status (1)

Country Link
DE (1) DE627169C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE763791C (en) * 1938-11-08 1954-06-28 Albert Grote Dr Process for the production of iron building beams and moldings

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE763791C (en) * 1938-11-08 1954-06-28 Albert Grote Dr Process for the production of iron building beams and moldings

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