DE229617C - - Google Patents

Info

Publication number
DE229617C
DE229617C DENDAT229617D DE229617DA DE229617C DE 229617 C DE229617 C DE 229617C DE NDAT229617 D DENDAT229617 D DE NDAT229617D DE 229617D A DE229617D A DE 229617DA DE 229617 C DE229617 C DE 229617C
Authority
DE
Germany
Prior art keywords
hardening
processing
rolling
pressing
subjected
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.)
Active
Application number
DENDAT229617D
Other languages
German (de)
Publication of DE229617C publication Critical patent/DE229617C/de
Active 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
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/02—Pretreatment of the material to be coated

Landscapes

  • 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)

Description

BERLIN. GEDRÜCKT IN DER REICHSDRUCKEREI.BERLIN. PRINTED IN THE REICHSDRUCKEREI.

Claims (2)

Patent-Ansprüche:Patent Claims: : I. Verfahren zur Oberflächenhärtung von Tantalmetall durch Behandlung mit Härtemitteln, dadurch gekennzeichnet, daß die Oberfläche vor der Härtung aufgerauht wird.: I. Process for surface hardening of tantalum metal by treatment with Hardening agents, characterized in that the surface is roughened before hardening will. 2. Ausführungsform des Verfahrens nach Anspruch 1, dadurch gekennzeichnet, daß die gehärtete Oberfläche nach dem Bearbeiten durch Pressen, Walzen o. dgl. erneut der Härtung unterworfen wird, zu dem Zweck, die bei der Bearbeitung bloßgelegten ungehärteten Stellen ebenfalls zu härten.2. Embodiment of the method according to claim 1, characterized in that that the hardened surface is subjected to hardening again after processing by pressing, rolling or the like the purpose of the unhardened areas exposed during processing harden.
DENDAT229617D Active DE229617C (en)

Publications (1)

Publication Number Publication Date
DE229617C true DE229617C (en)

Family

ID=489902

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT229617D Active DE229617C (en)

Country Status (1)

Country Link
DE (1) DE229617C (en)

Similar Documents

Publication Publication Date Title
EP1584708A3 (en) Process for the treatment of laser-structured plastic surfaces
DE207484T1 (en) METHOD FOR INCREASING THE STAIN RESISTANCE OF COPPER.
DE229617C (en)
DE2531947C3 (en) Process for producing a stitch printing plate that can be used without wiping, printing plate produced according to this process and its application
DE1546070A1 (en) Process for the pretreatment of steel sheets or clad steel sheets for the purpose of phosphating
DE1228864T1 (en) Process for making a printing plate
DE600494C (en) Process for the production of planographic printing forms
DE493827C (en) Process for improving the corrosion resistance of fittings made of magnesium alloys
DE237802C (en)
DE2049796A1 (en) Process for applying coatings to aluminum
EP0850750A3 (en) Process for producing a microstructured body, a casting frame and an integrated optical object
DE2550597C3 (en) Process for the pretreatment of plastic surfaces and plastic articles before the application of firmly adhering metal layers
DE2361017A1 (en) Case hardening alloys - using a boron-containing medium and a diffusion heat treatment
DE733671C (en) Process for coring metallic planographic printing plates
DE99384C (en)
DE258709C (en)
DE1812193C (en) Process for the production of shaped etched parts from sheet metal
DE52829C (en) Process for the production of pressed or punched metal objects decorated in a niello-like manner
DE250453C (en)
DE416018C (en) Process for converting print samples produced by transfer printing into printing forms on zinc or the like.
DE409113C (en) Press ram for ceramic and other plastic masses
DE448976C (en) Process for the production of rust-proof impressions in objects made of stainless steel
DE303612C (en)
DE342096C (en)
EP0399169A3 (en) Chemical process to avoid a rainbow effect, provoked by an oxide layer that is caused during the polishing of pieces of aluminium or pieces of aluminium alloys