DE873445C - Process for the production of hard metal, precious and other steels - Google Patents

Process for the production of hard metal, precious and other steels

Info

Publication number
DE873445C
DE873445C DEM8716A DEM0008716A DE873445C DE 873445 C DE873445 C DE 873445C DE M8716 A DEM8716 A DE M8716A DE M0008716 A DEM0008716 A DE M0008716A DE 873445 C DE873445 C DE 873445C
Authority
DE
Germany
Prior art keywords
steels
production
precious
hard metal
copper
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
DEM8716A
Other languages
German (de)
Inventor
Karl Malchus
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEM8716A priority Critical patent/DE873445C/en
Application granted granted Critical
Publication of DE873445C publication Critical patent/DE873445C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making non-ferrous alloys
    • C22C1/02Making non-ferrous alloys by melting

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Description

Verfahren zur Herstellung von Hartmetall, Edel- und sonstigen Stählen Alle bisher bekannten Verfahren zur Herstellung von Hartmetallen, Edel- und sonstigen Stählen haben den Nachteil, daß sie während des Prozesses Sauerstoff sowie Stickstoff (Luft) den Legierungsbestandteilen zuführen. Durch den Beitritt der Luft werden die Kristalle mit einer feinen, mikroskopisch erkennbaren Oxydschicht umgeben, was dem Gefüge des Werkstoffes sehr nachteilig ist. Es entstehen frühzeitig Ermüdungserscheinungen, der Werkstoff wird leicht zerbrechlich und gibt meist den Anlaß, daß er aus seiner Konstruktionslinie tritt. Betriebsstörungen sowie Betriebsunsicherheit sind die meist grobenFolgen. Die mit Oxyd durchsetzten Werkstoffe, z. B. Schneidwerkzeuge, besitzen keine große Widerstandskraft, sie werden leicht stumpf, sehr häufig durch mechanische Wärmeeinwirkung. Vorliegende Erfindung stellt ein neues Verfahren dar, mittels dessen man in der Lage ist, sämtliche Hartmetallsorten sowie Stähle herzustellen, ohne Gefahr zu laufen, daß in dem Werkstoff ein Eutektikum entsteht, d. h. es wird verhütet, daß sich in dem Werkstoff besonders harte Stellen sowie Oxydschichten bilden. Um nach dem vorliegenden neuen Verfahren z. B. einen harten und zähen Schneidwerkstoff herzustellen, geht man folgendermaßen vor: Die Metallsubstanz für i kg Hartmetall Nr. X beträgt i 5o g Fe, 8o g Cr, 70 9 Ni, 6o g Mo, 2,o g Mn, 6,2o g Wo.Process for the production of hard metals, noble and other steels All previously known methods for the production of hard metals, noble and other steels have the disadvantage that they add oxygen and nitrogen (air) to the alloy components during the process. When the air enters, the crystals are surrounded by a fine, microscopically recognizable oxide layer, which is very disadvantageous for the structure of the material. Fatigue occurs early on, the material is easily fragile and usually causes it to step out of its line of construction. Malfunctions and operational uncertainty are usually the major consequences. The materials interspersed with oxide, e.g. B. Cutting tools do not have great resistance, they are easily blunt, very often due to the action of mechanical heat. The present invention represents a new process by means of which it is possible to manufacture all types of hard metals and steels without running the risk of a eutectic being formed in the material, i.e. H. It is prevented that particularly hard areas and oxide layers form in the material. In order to use the present new method, for. For example, to produce a hard and tough cutting material, proceed as follows: The metal substance for 1 kg of hard metal No. X is 15o g Fe, 8o g Cr, 70 9 Ni, 6o g Mo, 2, o g Mn, 6.2o g Where.

Diese Komponenten werden in etwa 5 kg flüssigem Kupfer aufgelöst, die man der Reihe nach dem flüssigen Kupfer zusetzt. Bevor die Temperatur im Schmelzofen gesteigert wird, wird die Legierung mif d#Inen Eisenstab kontrolliert und anschließend mit Holzkohle abgedeckt. Die Tempe ratur kann -im Ofen beliebig gesteigert, bis etwa 2:2oo', werden. Anschließend wird die gleiche Menge (5 kg) vorgewärmtes Zink nacheinander in die Kupferle'gierung eingerührt, wobei eine so hohe Reduktionstemperatur-er're#icl#t'wird, daß alle Komponenten legiertwerden. - Etwas Aluminium und Magnesium wird noch beigerührt und dann der Ofen abgestellt.These components are dissolved in about 5 kg of liquid copper, which are added one after the other to the liquid copper. Before the temperature in the furnace is increased, the alloy is checked with an iron rod and then covered with charcoal. The temperature can be increased as desired in the oven, up to about 2: 2oo '. Then the same amount (5 kg) of preheated zinc is stirred into the copper alloy one after the other, the reduction temperature being so high that all components are alloyed. - Add some aluminum and magnesium and then turn off the stove.

Das Zink vereinigt sich mit dem Kupf.er zu Messing, das nach Rückgang der Ofentemperatur in noch flüssigem Zustand bei etwa i ioo' von dem am Tiegelboden sich angesammelten Hartmetallregulus abgegossen wird. DerZusatz vonAluminium und Magnesium bedingen die Zähigkeit des Regulus, Der Hartmetallregulus wird beim Umschmelzen mit Kieselsäure (Sand) von dem noch anhaftenden Kupfer-Zink (Messing) gereinigt. Die auf diese Weise hergestellte Legierung -setzt sich wie oben angeführt zusammen.The zinc combines with the copper to form brass, which after decline the furnace temperature in the still liquid state at about i 100 'of that at the bottom of the crucible accumulated hard metal regulation is poured off. The addition of aluminum and Magnesium cause the toughness of the regulus, the hard metal regulus becomes during remelting cleaned with silica (sand) from the still adhering copper-zinc (brass). The alloy produced in this way is composed as stated above.

Claims (1)

PATENTANSPRÜCHE,: i. Verfahren zur Herstellung von Hartmetallen, Edel- und sonstigen Stählen, dadurch gekennzeichnet, daß in eine Kupferschmelze die Komponenten der gewünschten Legierungen nacheinander unter Steigerung der Temperatur der Schmelze eingetragen werden, worauf der Schmelze Zn oder Cd. zugesetzt wird in einer Menge, die der des Kupfers entspricht. :2. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß die Messingschmelze nach Abkühlung auf etwa iioo' von dem sich gebildeten Regulus der gewünschten Legierung abgegossen'wird. - PATENT CLAIMS: i. Process for the production of hard metals, precious and other steels, characterized in that the components of the desired alloys are introduced into a copper melt one after the other while increasing the temperature of the melt, whereupon the melt Zn or Cd. is added in an amount that corresponds to that of the copper. : 2. A method according to claim 1, characterized in that the brass melt, after cooling to about 100 ', is poured off' from the regulus of the desired alloy that has formed. -
DEM8716A 1951-02-28 1951-02-28 Process for the production of hard metal, precious and other steels Expired DE873445C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM8716A DE873445C (en) 1951-02-28 1951-02-28 Process for the production of hard metal, precious and other steels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM8716A DE873445C (en) 1951-02-28 1951-02-28 Process for the production of hard metal, precious and other steels

Publications (1)

Publication Number Publication Date
DE873445C true DE873445C (en) 1953-04-13

Family

ID=7294331

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM8716A Expired DE873445C (en) 1951-02-28 1951-02-28 Process for the production of hard metal, precious and other steels

Country Status (1)

Country Link
DE (1) DE873445C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2849309A (en) * 1954-12-22 1958-08-26 Ethyl Corp Preparation of alkaline earth metal alloys

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2849309A (en) * 1954-12-22 1958-08-26 Ethyl Corp Preparation of alkaline earth metal alloys

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