DE376669C - Process for Bruenier von Eisen u. Like. With alkaline baths - Google Patents

Process for Bruenier von Eisen u. Like. With alkaline baths

Info

Publication number
DE376669C
DE376669C DEL46790D DEL0046790D DE376669C DE 376669 C DE376669 C DE 376669C DE L46790 D DEL46790 D DE L46790D DE L0046790 D DEL0046790 D DE L0046790D DE 376669 C DE376669 C DE 376669C
Authority
DE
Germany
Prior art keywords
bruenier
alkaline baths
bath
burnishing
von eisen
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
DEL46790D
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.)
ALFRED MAI DR
Original Assignee
ALFRED MAI 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 ALFRED MAI DR filed Critical ALFRED MAI DR
Priority to DEL46790D priority Critical patent/DE376669C/en
Application granted granted Critical
Publication of DE376669C publication Critical patent/DE376669C/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/60—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using alkaline aqueous solutions with pH greater than 8
    • C23C22/62—Treatment of iron or alloys based thereon

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • ing And Chemical Polishing (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Description

Verfahren zum Brünieren von Eisen- u. dgl. mit alkalischen Bädern. Zusatz zum Patent 375198. . Beim Brünierungsverfahren des Hauptpatentes hat es sich herausgestellt, daß in verdünnten Laugen unter Zusatz von Oxydationsniitteln die Briinierung bei den frischen Bädern sich nicht so leicht und durchgreifend vollzieht als bei den späteren in denselben Bädern ausgeführten Metallfärbungen. Es hat sich gezeigt, daß die Briinierting erst dann vollkommen und rasch gelingt, wenn in dem Bad von den angewandten Oxydationsmitteln, wie Salpeter, Kaliumpermanganat, hTatriuin-oder Kaliumbichroinat tisw., deren Abbauprodukte, wie salpetrigsatircs Natron, mangansaures :Natrium, Natrium- oder Kaliumcliromat usw., vorhanden sind.Process for burnishing iron and the like with alkaline baths. Addendum to Patent 375198.. With the browning process of the main patent, it is found that in dilute alkalis with the addition of oxidizing agents the Bringing in fresh baths is not so easy and thorough than in the later metal dyeings carried out in the same baths. It has has shown that the Briinierting only succeeds completely and quickly when in the Bath of the applied oxidizing agents, such as saltpeter, potassium permanganate, hTatriuin-or Potassium bichroinate tisw., Their breakdown products, such as sodium nitric acid, manganese acid : Sodium, sodium or potassium cliromate, etc., are present.

Gibt man nun dein Bad bei Beginn der Brünierung sofort solche Abbauprodukte in geringen Mengen zu, so wird die Brünierting sofort eingeleitet. mit dein Ergd>nis von satteren Tönen. Erhöht kann - diese Wirkung noch werden durch Zusatz von geringen Mengen eines Eisensalzes, wie z. B. Eisennitrat. Beispiel. Setzt man ein Bad mit etwa ioo kg Natronlatige und ungefähr a kg Salpeter an, so erzielt nian eine rasche Brünierung, wenn etwa ioo g Natriumnitrit und etwa 5o g Eisennitrat zugegeben werden, wobei die Töne von tiefschwarz bis messinggelb satter werden.If you give your bathroom such degradation products immediately at the beginning of the browning in small quantities, the burnishing is initiated immediately. with your result of richer tones. Can be increased - this effect can be increased by adding small amounts Amounts of an iron salt, such as. B. iron nitrate. Example. If you put a bath with If you add about 100 kg of soda and about a kg of saltpetre, nian achieves a rapid one Browning, if about 100 g sodium nitrite and about 50 g iron nitrate are added, whereby the tones from deep black to brass yellow become richer.

Claims (1)

PATL\TT-AI\TsrP Üciir: i. Verfalircn zum Brünieren von Eisen, Stahl, Legierungen und festen Lösungen derselben mittels alkalischer Bäder nach Patent 375198, dadurch gekennzeichnet, claß inan bei Beginn- der Briinierung dem Bad geringe Mengen von Abbauprodukten cler vcr@vendcten Oxydationsmittel zugibt. z. Verfahren nach Patentanspruch i, dadurch gekennzeichnet, daß man bei Beginn der Briinierung dein Bad auch noch IYiscnsalzc, wie z. B. Eisennitrat, zusetzt.PATL \ TT-AI \ TsrP Üciir: i. Process for burnishing iron, steel, alloys and solid solutions of the same by means of alkaline baths according to patent 375198, characterized in that small amounts of degradation products of the used oxidizing agent are added to the bath at the start of the burnishing. z. A method according to claim i, characterized in that at the beginning of the briination your bath is also IYiscnsalzc, such as. B. iron nitrate added.
DEL46790D 1918-06-26 1918-06-26 Process for Bruenier von Eisen u. Like. With alkaline baths Expired DE376669C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL46790D DE376669C (en) 1918-06-26 1918-06-26 Process for Bruenier von Eisen u. Like. With alkaline baths

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL46790D DE376669C (en) 1918-06-26 1918-06-26 Process for Bruenier von Eisen u. Like. With alkaline baths

Publications (1)

Publication Number Publication Date
DE376669C true DE376669C (en) 1923-05-31

Family

ID=7271750

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL46790D Expired DE376669C (en) 1918-06-26 1918-06-26 Process for Bruenier von Eisen u. Like. With alkaline baths

Country Status (1)

Country Link
DE (1) DE376669C (en)

Similar Documents

Publication Publication Date Title
DE376669C (en) Process for Bruenier von Eisen u. Like. With alkaline baths
DE601408C (en) Process for preventing tarnishing of objects made of nickel, copper and alloys of these metals
DE898705C (en) Process for the production of diffusion coatings
DE365785C (en) Process for dyeing fur, hair and the like like
DE421477C (en) Process for producing carbon-free titanium steel
AT78597B (en) Process for the preparation of dyes or color solutions.
DE413000C (en) Process for the production of phosphorus-containing molten metal balls, especially for the coating of metals with metal
DE901364C (en) Post-treatment of oxidized light metal
DE676821C (en) Process for the treatment of objects to be colored made of light metals or light alloys with an oxide-containing surface layer
DE362140C (en) Process for dyeing fur, hair and the like like
AT212108B (en) Process for improving the hot rollability of alloy steels
DE460309C (en) Process for the image-like decoration of fabrics by the action of light with the reduction of silver salts
AT104009B (en) Process for the production of siliconized tool steel without sensitivity to hardness.
CH140790A (en) Process for thermal tempering of non-cementable metals and alloys.
DE613762C (en) Process for browning objects made of iron or iron-carbon compounds
DE974004C (en) Process to improve the non-cutting deformation of workpieces made of iron and zinc
DE374428C (en) Liquid for the production of a bath for the treatment of hot steel blocks by extinguishing them in an aqueous solution
DE907916C (en) Process for the non-cutting deformation of iron and steel and other metals and metal alloys
DE376624C (en) Process for dyeing fur, hair and the like like
DE852187C (en) Machine part subject to sliding friction
DE489881C (en) Procedure for determining the rust resistance of iron, steel and iron alloys
DE888948C (en) Process for the production of coatings on metals
DE845590C (en) Solution for the surface treatment of metals
DE855402C (en) Process for the production and / or stabilization of low valence levels of polyvalent metal compounds
DE371233C (en) Process for dyeing fur, hair, feathers and the like like