AT86777B - Cast aluminum mold. - Google Patents

Cast aluminum mold.

Info

Publication number
AT86777B
AT86777B AT86777DA AT86777B AT 86777 B AT86777 B AT 86777B AT 86777D A AT86777D A AT 86777DA AT 86777 B AT86777 B AT 86777B
Authority
AT
Austria
Prior art keywords
cast aluminum
aluminum mold
aluminum
precious metal
magnesium
Prior art date
Application number
Other languages
German (de)
Inventor
Raimund Effenberger
Original Assignee
Raimund Effenberger
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 Raimund Effenberger filed Critical Raimund Effenberger
Application granted granted Critical
Publication of AT86777B publication Critical patent/AT86777B/en

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  • Mold Materials And Core Materials (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Gussform aus Aluminium. 



   Die Anwendung von Aluminiumformen zum Giessen von Gegenständen aus Edelmetall hatte Mängel aufzuweisen, so dass eine praktische Ausnutzung nicht möglich war. 



   Durch die Erfindung, nach welcher dem Aluminium eine geringe Menge von Magnesium zugesetzt wird, wird vornehmlich das lästige,   sogenannte"Abpranzen"vermieden,   denn bei   oftmaliger   Anwendung von Aluminiumgiessformen bildeten sich an den Formwänden eine Art Patina, welche sich dem eingegossenem Edelmetall mitteilte und dasselbe verunreinigte ; durch Zusatz von Magnesium bleibt die Formwand stets rein erhalten. 



   Die Aluminium-Magnesiumlegierung ist zwar unter der Bezeichnung Magnalium 
 EMI1.1 
 zusatz (unter   Is /O)   und die Anwendung dieser Legierung zur Herstellung von Gussformen. 



  Bei grösserem Zusatz von Magnesium würde die Gussform ihrem Zwecke nicht mehr entsprechen, da die Formwandung dann zu dicht und luftundurchlässig werden würde. 

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



   <Desc / Clms Page number 1>
 



  Cast aluminum mold.



   The use of aluminum molds for casting objects made of precious metal had shortcomings so that practical use was not possible.



   The invention, according to which a small amount of magnesium is added to the aluminum, primarily avoids the annoying, so-called "chipping", because with frequent use of aluminum casting molds, a kind of patina formed on the mold walls, which was communicated to the precious metal and the same contaminated; by adding magnesium, the mold wall is always kept clean.



   The aluminum-magnesium alloy is known as Magnalium
 EMI1.1
 additive (under Is / O) and the use of this alloy for the production of casting molds



  If a larger amount of magnesium was added, the casting mold would no longer serve its purpose, since the mold wall would then become too tight and impermeable to air.

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

Claims (1)

PATENT-ANSPRUCH : Gussform aus Aluminium zur Herstellung von Gussstücken aus Edelmetall bzw. Edelmetallegierungen, dadurch gekennzeichnet, dass dem Aluminium eine geringe Menge Magnesium zugesetzt ist. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Casting mold made of aluminum for the production of castings made of precious metal or precious metal alloys, characterized in that a small amount of magnesium is added to the aluminum. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT86777D 1920-04-07 1920-04-07 Cast aluminum mold. AT86777B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT86777T 1920-04-07

Publications (1)

Publication Number Publication Date
AT86777B true AT86777B (en) 1921-12-27

Family

ID=3607633

Family Applications (1)

Application Number Title Priority Date Filing Date
AT86777D AT86777B (en) 1920-04-07 1920-04-07 Cast aluminum mold.

Country Status (1)

Country Link
AT (1) AT86777B (en)

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