DE655432C - Process for the production of pellets from an aluminothermic mixture, in particular those for welding purposes - Google Patents
Process for the production of pellets from an aluminothermic mixture, in particular those for welding purposesInfo
- Publication number
- DE655432C DE655432C DEE48909D DEE0048909D DE655432C DE 655432 C DE655432 C DE 655432C DE E48909 D DEE48909 D DE E48909D DE E0048909 D DEE0048909 D DE E0048909D DE 655432 C DE655432 C DE 655432C
- Authority
- DE
- Germany
- Prior art keywords
- production
- pellets
- particular those
- aluminothermic mixture
- aluminothermic
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
-
- 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
- B23K23/00—Alumino-thermic welding
-
- 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
- B23K35/34—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material comprising compounds which yield metals when heated
-
- C—CHEMISTRY; METALLURGY
- C06—EXPLOSIVES; MATCHES
- C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
- C06B33/00—Compositions containing particulate metal, alloy, boron, silicon, selenium or tellurium with at least one oxygen supplying material which is either a metal oxide or a salt, organic or inorganic, capable of yielding a metal oxide
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Description
AUSGEGEBEN AM 15. JANUAR 1938ISSUED ON JANUARY 15, 1938
Es ist bekannt, aluminothermisch ε Gemische, die ursprünglich Pulverform haben, nach Beimischung von Bindemitteln, z. B. gepulvertem Schwefel, zu festen Körpern, sog. Preßlingen, zusammenzupressen. Die Herstellung der Preßlinge unter Verwendung von Bindemitteln hat erhebliche Nachteile.It is known to use aluminothermic ε mixtures, which originally have powder form, after admixing binders such. B. powdered To compress sulfur into solid bodies, so-called pellets. The production the compacts using binders have considerable disadvantages.
Die meisten Bindemittel legieren sich mit dem alumiiiiOgenetischcn Eisen und machen es für Schweißzwecke,· wo· es auf Reinheit der Eisenschmelze ankommt, unbrauchbar. Sie bewirken auch oft eine unerwünscht heftige, mit starker Gas- oder Rauchentwicklung verbundene Reaktion. Weiterhin wird durch das Bindemittel die Entzündbarkeit und Reaktionsgeschwindigkeit des Preßlings oft in unerwünschtem Maße beeinflußt. Endlich erfordert die gleichmäßige Untermischung des Bindemittels große Sorgfalt und besondere Einrichtungen.Most of the binders alloy themselves with the alumino-genetic iron and make it for welding purposes, · where · it is on purity the iron melt arrives, useless. They also often cause an undesirably violent, reaction associated with strong gas or smoke development. Furthermore, through the binder often affects the flammability and reaction rate of the compact influenced to an undesirable extent. Finally, the even mixing of the Binder great care and special facilities.
Diese Nachteile könnten vermieden werden, wenn es gelänge, einen haltbaren und widerstandsfähigen Preßling ohne jedes Bindemittel herzustellen. Ohne Bindemittel hergestellte Preßlinge zerfallen aber kurz nach der Pressung schon bei geringsten äußeren Beanspruchungen, da der innere Zusammenhalt fehlt. Man hat zwar schon kleinere Heizpatronen u. dgl. hergestellt, indem man eine bindemittelfreie aluminothermische Mischung von oben in eine Hülle einpreßte und diese hinterher oben verschloß. Dieses Verfahren ist jedoch nur praktisch möglich bei verhältnismäßig kleinen Hüllen. Versuche haben gezeigt, daß bei der Herstellung größerer Preßlinge durch Einpressen einer bindemittelfreien aluminothermischen Mischung in offene Hüllen schon beim Ausdrücken des Preßlings aus· der Matrize und vor Anbringen eines Deckels die oberen Schichten, wieder ausbrachen. These disadvantages could be avoided if a durable and to produce robust compacts without any binding agent. Manufactured without binders However, pressed parts disintegrate shortly after pressing under the slightest external stress, because the inner cohesion is missing. Smaller heating cartridges and the like have already been manufactured by using a Binder-free aluminothermic mixture pressed into a casing from above and this locked up afterwards. However, this procedure is only practically possible at relatively small shells. Experiments have shown that in the production of larger compacts by pressing a binder-free aluminothermic mixture into open Envelopes as soon as the pressed part is pressed out of the die and before one is attached Covered the upper layers, broke out again.
Die Erfindung löst die Aufgabe der Herstellung eines bindemittelfreien und doch bruchsicheren aluminothermischen Preßlings in .einfachster .Weise. Ihr Wesen besteht darin, daß das aluminothermische GemischThe invention solves the problem of producing a binder-free and yet unbreakable aluminothermic pellets in the simplest way. Your essence exists in that the aluminothermic mixture
vor der Pressung allseitig mit einer Blechhülle umgeben und mit dieser zusammen dem Preßdruck unterworfen wird, so daß also ein verschlossenes, mit aluminothermischer Mischuiig gefülltes Gefäß mit Inhalt zusammengepreßt wird. Bei dem Preßvorgang wird die Hülle gestaucht und gefaltet, wobei jedoch die Falten durch den starken Preßdruck ausgeglichen werden. Der Preßling ist glatt,Surrounded on all sides with a sheet metal shell before pressing and with this together with the Pressing pressure is subjected, so that a sealed, with aluminothermic Mischuiig filled vessel with contents is compressed. During the pressing process, the Sheath compressed and folded, but the folds are compensated by the strong pressure will. The compact is smooth,
ίο fest und bruchsicher.ίο firm and unbreakable.
Besteht die Blechhülle aus reinem Eisenblech, so kann man sie als eine Erhöhung der Eiäenausbeute ansehen, da sie während der Reaktion schmilzt. Wählt man die Hülle in bekannter Weise aus Aluminiumblech, so kann man ihr Aluminiumgewicht als Bestandteil der alumino thermischen Masse auffassen und deren Aluminiumgehalt entsprechend verringern. If the sheet metal shell is made of pure sheet iron, they can be seen as an increase in the egg yield, since they are during the Reaction melts. If you choose the shell in a known manner made of sheet aluminum, so one can understand their aluminum weight as part of the alumino thermal mass and reduce their aluminum content accordingly.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEE48909D DE655432C (en) | 1936-10-25 | 1936-10-25 | Process for the production of pellets from an aluminothermic mixture, in particular those for welding purposes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEE48909D DE655432C (en) | 1936-10-25 | 1936-10-25 | Process for the production of pellets from an aluminothermic mixture, in particular those for welding purposes |
Publications (1)
Publication Number | Publication Date |
---|---|
DE655432C true DE655432C (en) | 1938-01-15 |
Family
ID=7080786
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEE48909D Expired DE655432C (en) | 1936-10-25 | 1936-10-25 | Process for the production of pellets from an aluminothermic mixture, in particular those for welding purposes |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE655432C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3024624A1 (en) * | 1980-06-30 | 1982-05-13 | Klöckner-Werke AG, 4100 Duisburg | METHOD AND DEVICE FOR ALLOYING METAL |
WO2007014191A2 (en) | 2005-07-25 | 2007-02-01 | Erico International Corporation | Weld metal material apparatus and method |
-
1936
- 1936-10-25 DE DEE48909D patent/DE655432C/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3024624A1 (en) * | 1980-06-30 | 1982-05-13 | Klöckner-Werke AG, 4100 Duisburg | METHOD AND DEVICE FOR ALLOYING METAL |
WO2007014191A2 (en) | 2005-07-25 | 2007-02-01 | Erico International Corporation | Weld metal material apparatus and method |
EP1907166A2 (en) * | 2005-07-25 | 2008-04-09 | Erico International Corporation | Weld metal material apparatus and method |
EP1907166B1 (en) * | 2005-07-25 | 2013-04-17 | Erico International Corporation | Weld metal material apparatus and method |
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