DE464338C - Welding agent for aluminum - Google Patents

Welding agent for aluminum

Info

Publication number
DE464338C
DE464338C DER64935D DER0064935D DE464338C DE 464338 C DE464338 C DE 464338C DE R64935 D DER64935 D DE R64935D DE R0064935 D DER0064935 D DE R0064935D DE 464338 C DE464338 C DE 464338C
Authority
DE
Germany
Prior art keywords
aluminum
borax
boric acid
welding
welding agent
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
DER64935D
Other languages
German (de)
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 DER64935D priority Critical patent/DE464338C/en
Application granted granted Critical
Publication of DE464338C publication Critical patent/DE464338C/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
    • B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
    • B23K35/3606—Borates or B-oxides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nonmetallic Welding Materials (AREA)

Description

Es sind bereits Lötmittel vorgeschlagen worden, die als wesentliche Bestandteile Borax und Borsäure enthalten. Insbesondere ist es bekannt, zur Gewinnung eines Lötmittels Borax (Na2B4O7) und Borsäureanhydrid (B2O3) zu gleichen Teilen zu mischen oder auch Mischungen von Alikalisalzen (Borax ader Soda) und Borsäure in solchem Verhältnis herzustellen, daß auf 1 Mol. Natrium oxyd etwa 3 bis 4 Mol. Borsäureanhydrid kommen. Die so zusammengesetzten Löt- oder Flußmittel, die sich nur in ihrem Borsäuregehalt voneinander unterscheiden, reagieren infolge dieses Säuregehaltes sauer. Läßt man sie auf Reinaluminium einwirken, so greifen sie das Metall auch bei längerer Einwirkung nicht an. Diese Mittel sind nämlich nicht imstande, die oberflächliche Oxydschicht des, Metalls zu beseitigen. Beim Löten oder Schweißen mit diesen Mitteln entsteht ein schwerfließender Metallschmelzfluß unter gleichzeitiger Bildung von Oxydklümpchen. Infolgedessen läuft hierbei die Oberfläche der Schweißnähte schmutzig an und ist rauh und ungleichmäßig.Soldering agents containing borax and boric acid as essential ingredients have already been proposed. In particular, it is known, to obtain a solder, to mix borax (Na 2 B 4 O 7 ) and boric anhydride (B 2 O 3 ) in equal parts or to produce mixtures of alkali salts (borax or soda) and boric acid in such a ratio that 1 mol. Sodium oxide about 3 to 4 mol. Boric anhydride. Soldering or fluxing agents composed in this way, which differ from one another only in their boric acid content, react acidic as a result of this acid content. If you let them act on pure aluminum, they won't attack the metal even after prolonged exposure. This is because these agents are unable to remove the surface oxide layer of the metal. When soldering or welding with these means, a poorly flowing metal melt flow occurs with the simultaneous formation of lumps of oxide. As a result, the surface of the weld seams tarnishes and is rough and uneven.

Die vorliegende Erfindung betrifft ein zum Schweißen von Aluminium geeignetes Mittel, das einen oxydfreien leichten Metallfluß mit reiner glatter Oberfläche ergibt. Diese Wirkung wird dadurch erreicht, daß man der Mischung von Borax und Borsäure freies Alkali, beispielsweise Ätzkali, im Überschuß zugibt.The present invention relates to a means suitable for welding aluminum, which results in an oxide-free light metal flow with a clean, smooth surface. This effect is achieved by adding an alkali free from borax and boric acid, for example caustic potash, is added in excess.

Die Mischung der drei Stoffe erfolgt hierbei zweckmäßig zu gleichen Teilen, so daß das Schweißmittel aus je einem Drittel Borax, Borsäure und Ätzkali besteht.The three substances are advantageously mixed in equal parts so that the welding agent consists of one third each of borax, boric acid and caustic potash.

Während die bisher bekannten, Borax und Borsäure enthaltenden Lötmittel zum Gebrauch erst in ihrem Kristallwasser geschmolzen werden mußten, kann das neue Schweißmittel sowohl in trockenem Zustande als auch in wäßriger Lösung angewendet werden. Hierdurch wird das Schweißen erheblich erleichtert und verbilligt.While the heretofore known, borax and boric acid containing solder for use first had to be melted in their crystal water, the new welding agent can can be used both in the dry state and in aqueous solution. Through this welding is made considerably easier and cheaper.

Mit dem neuen Mittel können auch andere Metalle, wie Kupfer, Zinn, Zink usw., einwandfrei mit Aluminium verschweißt werden. With the new agent, other metals such as copper, tin, zinc etc. can also be used perfectly be welded to aluminum.

Claims (2)

Patentansprüche:Patent claims: 1. Schweißmittel für Aluminium., bestehend aus einer Mischung gleicher Teile Borax, Borsäure und Ätzkali.1. Welding material for aluminum., Consisting of a mixture of identical parts Borax, boric acid and caustic potash. 2. Schweißmittel nach Anspruch 1, bestehend aus einer wäßrigen Lösung gleicher Teile Borax, Borsäure und Ätzkali.2. Welding means according to claim 1, consisting of an aqueous solution of the same Share borax, boric acid, and caustic potash.
DER64935D 1925-07-25 1925-07-25 Welding agent for aluminum Expired DE464338C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER64935D DE464338C (en) 1925-07-25 1925-07-25 Welding agent for aluminum

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER64935D DE464338C (en) 1925-07-25 1925-07-25 Welding agent for aluminum

Publications (1)

Publication Number Publication Date
DE464338C true DE464338C (en) 1928-08-16

Family

ID=7412519

Family Applications (1)

Application Number Title Priority Date Filing Date
DER64935D Expired DE464338C (en) 1925-07-25 1925-07-25 Welding agent for aluminum

Country Status (1)

Country Link
DE (1) DE464338C (en)

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