DE583989C - Process for the production of metal moldings from crushed metal waste by heat and pressure treatment without melting - Google Patents
Process for the production of metal moldings from crushed metal waste by heat and pressure treatment without meltingInfo
- Publication number
- DE583989C DE583989C DEI35510D DEI0035510D DE583989C DE 583989 C DE583989 C DE 583989C DE I35510 D DEI35510 D DE I35510D DE I0035510 D DEI0035510 D DE I0035510D DE 583989 C DE583989 C DE 583989C
- Authority
- DE
- Germany
- Prior art keywords
- metal
- waste
- melting
- production
- heat
- 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
- 239000002184 metal Substances 0.000 title claims description 14
- 229910052751 metal Inorganic materials 0.000 title claims description 14
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims description 6
- 238000002844 melting Methods 0.000 title claims description 5
- 230000008018 melting Effects 0.000 title claims description 5
- 239000010814 metallic waste Substances 0.000 title claims description 5
- 238000000465 moulding Methods 0.000 title 1
- 239000000843 powder Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 239000007858 starting material Substances 0.000 claims description 4
- 239000002699 waste material Substances 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 9
- 239000000463 material Substances 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910000754 Wrought iron Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 238000005267 amalgamation Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000012255 powdered metal Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F8/00—Manufacture of articles from scrap or waste metal particles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Powder Metallurgy (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
Verfahren zur Herstellung von Metallformstücken aus zerkleinerten Metallabfällen durch Wärme- und Druckbehandlung ohne Schmelzung Um Eisenabfälle aufzuarbeiten, hat man vorgeschlagen, sie rotglühend zu machen und auf Rohplatten für die Herstellung von Schmiedeeisen, Walzeisen und Blech zu verarbeiten oder auch die paketierten Abfälle kalt vorzupressen und dann auf Schweißtemperatur zu bringen. Ferner ist es bekannt, Metallpulver durch Druck- und bzw. oder `Värmebehandlung zu verdichten.Process for the production of metal fittings from crushed Metal waste by heat and pressure treatment without melting To iron waste To work up, it has been suggested to make them red-hot and on raw panels for the production of wrought iron, roll iron and sheet metal or to process to cold pre-press the packaged waste and then bring it to welding temperature. It is also known to metal powder by pressure and / or `heat treatment to condense.
Es wurde nun gefunden, daß man Metall-. abfälle, z. B. Stanzabfälle von Blechen, Drehspäne von Stählen, ohne zu schmelzen, vorteilhaft auf Metallformstücke, wie Barren, Stäbe, Bleche, Drähte, Röhren usw., dadurch verarbeiten kann, daß man die Abfälle, gegebenenfalls nach einer vorhergehenden Reinigung und Zerkleinerung, mit Metallpulver vermischt und dann in an sich bekannter Weise einer Druck- und bzw. oder Wärmebehandlung ohne Schmelzung unterwirft. Ist eine vorhergehende Zerkleinerung des Ausgangsmaterials erforderlich oder erwünscht, so führt man die Abfälle in Schnitzel oder grobe Körner über.It has now been found that you can metal. waste, e.g. B. punching waste of sheet metal, turnings of steels without melting, advantageously on metal fittings, such as bars, rods, sheets, wires, tubes, etc., can be processed by the waste, if necessary after previous cleaning and shredding, mixed with metal powder and then in a known manner a printing and or or subjected to heat treatment without melting. Is a previous crushing of the starting material is required or desired, the waste is converted into schnitzel or coarse grains over.
Die Verarbeitung des Gemisches der Abfälle mit \@letallpulver führt man, wie an sich ebenfalls bekannt ist, zweckmäßig in inerter Atmosphäre oder unter reduzierenden Bedingungen .aus; im letzteren Falle ist es auch möglich,'oxydierte Abfälle, wie Walzensinter, aufzuarbeiten. Man kann die Abfälle nicht nur mit Pulver gleicher Zusammensetzung mischen, sondern auch mit anderen pulverförmigen Metallen, Legierungen oder Stoffen und auf diese Weise, insbesondere wenn man durch genügend langes Erhitzen für eine ausreichende Diffusion sorgt, die verschiedenartigsten Legierungen herstellen.The processing of the mixture of the waste with \ @letallpulver leads one, as is also known per se, expediently in an inert atmosphere or under reducing conditions .off; in the latter case it is also possible to 'oxidized Recycle waste such as roller sinter. You can't just waste the powder with it mix the same composition, but also with other powdered metals, Alloys or materials and in this way, especially if you go through enough prolonged heating ensures sufficient diffusion, the most diverse Manufacture alloys.
In Fällen, in denen die Zerkleinerung der Abfälle Schwierigkeiten bereitet; kann man diese durch eine Vorbehandlung in ein Erzeugnis, das eine sprödere Beschaffenheit besitzt als das Ausgangsmaterial, überführen und es nach -erfolgter Zerkleinerung wieder in das ursprüngliche Metall zurückverwandeln. Die Vorbehandlung kann beispielsweise bei der Verarbeitung von Eisenabfällen durch Erhitzen in Gegenwart von Ammoniak geschehen oder durch Oxydation oder Legieren erfolgen.In cases where the shredding of the waste has difficulties prepares; One can convert this into a product that is more brittle by pretreatment Quality as the starting material, transferring it and then succeeding it Convert the shredding back to the original metal. The pre-treatment can for example in the processing of iron waste by heating in the presence done by ammonia or by oxidation or alloying.
Von der bekannten Verarbeitung von Metallpulvern zu kompakten Stücken durch Sintern oder Pressen oder durch beide Maßnahmen unterscheidet sich das vorliegende Verfahren durch die Wahl bestimmter Ausgangsstolfe, da hier immer solche Gemische verarbeitet werden, die außer pulverförmigem Metall stückige Metallabfälle enthalten. Während solche Abfälle bisher nur auf umständlichem Wege, insbesondere durch Verschmelzen, unter Verlusten und Aufnahme von Verunreinigungen verarbeitet werden konnten, gestattet das vorliegende Verfahren z. B. durch einfaches Pressen oder Zusammensintern und ohne @ irgendwelche Verluste zu einem gut zu verarbeitenden Material zu gelangen. Daß man auf einem derart einfachen Wege aus grobkörnigen oder stückigen Abfällen ein vollkommen dichtes und homogenes Material herstellen kann, war nicht ohne weiteres vorauszusehen. Man mußte vielmehr annehmen, daß zwischen dem kompakten Metallstück und dem gesinterten pulverförmigen Material eine Trennungsschicht auftritt oder daß beim Auswalzen oder Schmieden eines derartigen Materials Brüche oder Risse entstehen. Beispiel Bei der Herstellung von Eisenfeinblechen erhaltene Abfälle werden zu Stücken von i bis 5 qcm Größe zerkleinert und mit Eisenpulver vermischt. Die Masse wird darauf auf 95o° in einer 'Wasserstoffatmosphäre erhitzt, wobei Sinterung eintritt. Der so erhaltene Sinterblock kann durch Auswalzen auf ein vollkommen homogenes Blech verarbeitet werden.From the well-known processing of metal powders into compact pieces the present differs by sintering or pressing or by both measures Procedure through the choice of certain starting materials, since there are always mixtures of these processed, except powder Metal lumpy metal waste contain. While such waste has so far only been cumbersome, in particular processed by amalgamation, with losses and absorption of impurities could be, the present method allows z. B. by simply pressing or sintering together and without @ any losses into a well-processable one Material to arrive. That you can get out of coarse-grained or lumpy waste can produce a completely dense and homogeneous material, could not be foreseen without further ado. Rather, one had to assume that between the compact metal piece and the sintered powdery material a separating layer occurs or that fractures occur during the rolling or forging of such a material or cracks appear. Example Obtained in the manufacture of thin iron sheets Waste is crushed into pieces from 1 to 5 square centimeters and covered with iron powder mixed. The mass is then heated to 95o ° in a 'hydrogen atmosphere, where sintering occurs. The sintered block obtained in this way can be rolled out a completely homogeneous sheet can be processed.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEI35510D DE583989C (en) | 1928-09-14 | 1928-09-14 | Process for the production of metal moldings from crushed metal waste by heat and pressure treatment without melting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEI35510D DE583989C (en) | 1928-09-14 | 1928-09-14 | Process for the production of metal moldings from crushed metal waste by heat and pressure treatment without melting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE583989C true DE583989C (en) | 1933-09-13 |
Family
ID=7189009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEI35510D Expired DE583989C (en) | 1928-09-14 | 1928-09-14 | Process for the production of metal moldings from crushed metal waste by heat and pressure treatment without melting |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE583989C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE914379C (en) * | 1938-07-09 | 1954-07-01 | Ncr Co | Type carrier for typewriters and calculating machines, cash registers, hand stamps or the like. |
-
1928
- 1928-09-14 DE DEI35510D patent/DE583989C/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE914379C (en) * | 1938-07-09 | 1954-07-01 | Ncr Co | Type carrier for typewriters and calculating machines, cash registers, hand stamps or the like. |
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