AT80408B - Process for making machinable acidic process for making machinable acid-resistant silicon-containing alloys. permanent silicon-containing alloys. - Google Patents

Process for making machinable acidic process for making machinable acid-resistant silicon-containing alloys. permanent silicon-containing alloys.

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Publication number
AT80408B
AT80408B AT80408DA AT80408B AT 80408 B AT80408 B AT 80408B AT 80408D A AT80408D A AT 80408DA AT 80408 B AT80408 B AT 80408B
Authority
AT
Austria
Prior art keywords
containing alloys
silicon
machinable
making
acid
Prior art date
Application number
Other languages
German (de)
Inventor
Richard Walter Richard Walter
Original Assignee
Richard Walter Richard Walter
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 Richard Walter Richard Walter filed Critical Richard Walter Richard Walter
Application granted granted Critical
Publication of AT80408B publication Critical patent/AT80408B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Herstellung von bearbeitbaren säurebeständigen Silizium enthaltenden Legierungen. 



   Legierungen mit hohem Gehalt an Silizium finden infolge ihrer Säureheständigkeit in der chemischen Industrie ausgedehnte Anwendung. Die dabei gestellten Anforderungen bedingen meistens Siliziumgehalt von 8 bis   so%.   welche bereits derartige Härte und Sprödigkeit 
 EMI1.1 
 doch erzielte man Erfolge immer nur auf Kosten der Säureheständigkeit. 



   Die Erfindung hilft nun diesen   Übelständen   ab, indem gefunden wurde, dass die unerwünschte 
 EMI1.2 
 ganz beträchtlich herabgesetzt werden kann. ohne dabei die Säurebeständigkeit zu vermindern. 



   Beispiel : Bei einer Legierung mit   15% Si und 85% Fe.   die bereits eine solche Härte besitzt, dass sie Glas ritzt, tritt schon durch einen Zusatz von   o'oi%   B eine deutliche Herabsetzung der Härte ein, während bereits bei einem Zusatz von   0'03   bis 0.04 % B die Legierung durch Drehen, Bohren, Feilen usw. bearbeitet werden kann. Das Gefüge hat dabei gleichzeitig eine bedeutende Verfeinerung erfahren. 



   Diese überraschende Wirkung des Bors war um so weniger zu erwarten, als diesem Element bekanntlich, z. B. beim Zusatz zu Stahl. selbst eine ausserordentlich härtende Eigenschaft innewohnt. 



   Die Erfindung ermöglicht der chemischen Industrie durch Aufhebung der Sprödigkeit der Siliziumlegierungen deren vielseitiger Anwendung, insbesondere auch durch die Aufhebung der bisherigen Beschränkungen in der Formgebung. Für die verschiedenen gebräuchlichen Siliziumgehalt liegt je ein Optimum für den günstigsten Borgehalt vor. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Process for the manufacture of machinable acid-resistant silicon-containing alloys.



   Alloys with a high silicon content are widely used in the chemical industry due to their acid resistance. The requirements made here mostly require silicon content of 8 to so%. which already have such hardness and brittleness
 EMI1.1
 but successes were only ever achieved at the expense of acid resistance.



   The invention now remedies these evils by having found that the undesirable
 EMI1.2
 can be reduced quite considerably. without reducing the acid resistance.



   Example: For an alloy with 15% Si and 85% Fe. which already has such a hardness that it scratches glass, the addition of o'oi% B already results in a significant reduction in hardness, while an addition of 0'03 to 0.04% B causes the alloy to be turned, bored, Files etc. can be processed. At the same time the structure has undergone a significant refinement.



   This surprising effect of boron was all the less to be expected as this element is known, e.g. B. when adding to steel. itself has an extraordinarily hardening property.



   By eliminating the brittleness of silicon alloys, the invention enables the chemical industry to use them in a variety of ways, in particular also by eliminating the previous restrictions in shaping. For the various common silicon contents, there is an optimum for the most favorable boron content.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-AXSPRUCH : EMI1.3 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT AX CLAIM: EMI1.3 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT80408D 1918-10-28 1918-10-28 Process for making machinable acidic process for making machinable acid-resistant silicon-containing alloys. permanent silicon-containing alloys. AT80408B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT80408T 1918-10-28

Publications (1)

Publication Number Publication Date
AT80408B true AT80408B (en) 1920-04-10

Family

ID=3601931

Family Applications (1)

Application Number Title Priority Date Filing Date
AT80408D AT80408B (en) 1918-10-28 1918-10-28 Process for making machinable acidic process for making machinable acid-resistant silicon-containing alloys. permanent silicon-containing alloys.

Country Status (1)

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AT (1) AT80408B (en)

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