CH201360A - Process for regulating and maintaining the effectiveness of salt baths that can be used for the treatment of light metals. - Google Patents

Process for regulating and maintaining the effectiveness of salt baths that can be used for the treatment of light metals.

Info

Publication number
CH201360A
CH201360A CH201360DA CH201360A CH 201360 A CH201360 A CH 201360A CH 201360D A CH201360D A CH 201360DA CH 201360 A CH201360 A CH 201360A
Authority
CH
Switzerland
Prior art keywords
current
effectiveness
regulating
maintaining
treatment
Prior art date
Application number
Other languages
German (de)
French (fr)
Inventor
Deutsche Gold-Und Sil Roessler
Original Assignee
Degussa
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 Degussa filed Critical Degussa
Publication of CH201360A publication Critical patent/CH201360A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/002—Resistance welding; Severing by resistance heating specially adapted for particular articles or work
    • B23K11/004—Welding of a small piece to a great or broad piece
    • B23K11/0046—Welding of a small piece to a great or broad piece the extremity of a small piece being welded to a base, e.g. cooling studs or fins to tubes or plates
    • B23K11/0053—Stud welding, i.e. resistive
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/34—Methods of heating
    • C21D1/44—Methods of heating in heat-treatment baths
    • C21D1/46—Salt baths

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Anti-Oxidant Or Stabilizer Compositions (AREA)
  • Luminescent Compositions (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Description

  

      Procédé   <U>de</U>     soudage   <U>d'au</U>     moins   <U>un</U>     signe   <U>en</U>     relief   <U>sur un</U>     cadran   <B><U>de</U></B>     pièce     d<U>'horlogerie et cadran obtenu par ce. procédé</U>    La revendication du brevet principal concerne un procédé de sou  dage d'au moins un signe en relief sur un cadran de pièce d'horlo  gerie, selon lequel on applique le signe contre le cadran pour l'y  souder, caractérisé par le fait qu'on utilise pour cela un organe  flexible agissant avec une pression déterminée sur l'un des<B>élé-</B>  ments à souder     de    manière à influencer le mouvement relatif du  signe et du cadran.

        La présente invention est caractérisée par le fait que le courant  de soudage est un courant d'ondes     lrltra#sonores.     



  Ce procédé ne sera pas repris en détail dans cette description car  il correspond, dans ses grandes lignes au procédé décrit dans le  brevet     principal    et ceci à l'exception de la nature du courant de  soudure. C'est ainsi que lorsque l'organe flexible portant la pièce  à souder a été amené en contact avec le support, on fait passer à  travers la pièce et l'organe non pas un courant électrique mais bien  un courant d'ondes ultrasonores. On sait en effet qu'un tel courant  produit un soudage particulièrement propre et efficace à condition  bien entendu que ses
EMI0002.0003  
   , en particulier son amplitude  et sa fréquence, soient convenablement choisies.

   Ce courant ne pro  voque pas seulement la fusion des surfaces des pièces à souder mais  encore, en raison des chocs violents qu'il produit sur ces surfaces,  leur décapage efficace.  



  Dans une variante du procédé, on superpose un courant d'ondes     ul-          tra-sonores    à un courant électrique de manière à obtenir un souda  ge présentant les avantages du soudage par résistance et du soudage  par ultrasons.



      Process <U> of </U> welding <U> of at least </U> <U> one </U> sign <U> in </U> relief <U> on a </U> dial < B> <U> de </U> </B> piece of <U> 'watch and dial obtained by this. process </U> The claim of the main patent relates to a process for soldering at least one sign in relief on a timepiece dial, according to which the sign is applied against the dial in order to solder it there, characterized by the fact that for this a flexible member is used acting with a determined pressure on one of the <B> elements </B> to be welded so as to influence the relative movement of the sign and of the dial.

        The present invention is characterized in that the welding current is a current of ultra-sonic waves.



  This process will not be repeated in detail in this description because it corresponds, in general terms, to the process described in the main patent, with the exception of the nature of the welding current. Thus, when the flexible member carrying the piece to be welded has been brought into contact with the support, not an electric current but a current of ultrasonic waves is passed through the piece and the member. It is in fact known that such a current produces particularly clean and efficient welding provided of course that its
EMI0002.0003
   , in particular its amplitude and its frequency, are suitably chosen.

   This current not only causes fusion of the surfaces of the parts to be welded but also, because of the violent impacts which it produces on these surfaces, their effective pickling.



  In a variant of the process, a current of ultrasonic waves is superimposed on an electric current so as to obtain a welding having the advantages of resistance welding and of ultrasonic welding.

Claims (1)

<U>R E<B>VEND</B> I C A T IONS</U> I. Procédé de soudage dtau moins un signe en relief sur un ca dran de pièce d'horlogerie selon la revendication I du brevét prin cipal, caractérisé en ce que le courant de soudage est un courant d'ondes ultrasonores. II. Cadran de pièce d'horlogerie à signes rapportés obtenu par le procédé de la revendication I. <U>Sous- revendications</U> 1. Procédé selon la revendication I, caractérisé par le fait que le courant de soudage est un courant dtondes ultrasonores superpo sé à un courant électrique. 2. Cadran obtenu par le procédé de la revendication I et de la sous revendication 1. <U> RE <B> VEND </B> ICAT IONS </U> I. A method of welding at least one sign in relief on a casing of a timepiece according to claim I of the main patent, characterized in that that the welding current is a current of ultrasonic waves. II. Clockwork dial with added signs obtained by the method of claim I. <U> Subclaims </U> 1. Method according to claim I, characterized in that the welding current is a current of ultrasonic waves superposed on an electric current. 2. Dial obtained by the process of claim I and of sub-claim 1.
CH201360D 1936-12-31 1937-12-20 Process for regulating and maintaining the effectiveness of salt baths that can be used for the treatment of light metals. CH201360A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201360X 1936-12-31
DED74553D DE752422C (en) 1936-12-31 1937-02-10 Process for the treatment of light metals in nitrates or nitrate-nitrite mixtures and fused baths containing bichromate

Publications (1)

Publication Number Publication Date
CH201360A true CH201360A (en) 1938-11-30

Family

ID=25749987

Family Applications (1)

Application Number Title Priority Date Filing Date
CH201360D CH201360A (en) 1936-12-31 1937-12-20 Process for regulating and maintaining the effectiveness of salt baths that can be used for the treatment of light metals.

Country Status (5)

Country Link
AT (1) AT160307B (en)
CH (1) CH201360A (en)
DE (1) DE752422C (en)
FR (1) FR831403A (en)
GB (1) GB508541A (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT129294B (en) * 1929-12-11 1933-07-25 Ig Farbenindustrie Ag Process for protecting magnesium and magnesium alloys against attack by heating baths made from molten salt.
US1840562A (en) * 1931-02-20 1932-01-12 Aluminum Co Of America Method of heat-treating aluminum and articles thereby

Also Published As

Publication number Publication date
AT160307B (en) 1941-04-10
DE752422C (en) 1952-11-04
FR831403A (en) 1938-09-02
GB508541A (en) 1939-06-29

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