DE1558636C - Process for the production of dispersion-hardened lead or dispersion-hardened lead alloys - Google Patents
Process for the production of dispersion-hardened lead or dispersion-hardened lead alloysInfo
- Publication number
- DE1558636C DE1558636C DE19671558636 DE1558636A DE1558636C DE 1558636 C DE1558636 C DE 1558636C DE 19671558636 DE19671558636 DE 19671558636 DE 1558636 A DE1558636 A DE 1558636A DE 1558636 C DE1558636 C DE 1558636C
- Authority
- DE
- Germany
- Prior art keywords
- lead
- particles
- oxide
- atmosphere
- carbon dioxide
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 229910000978 Pb alloy Inorganic materials 0.000 title claims 3
- 238000000034 method Methods 0.000 title claims 3
- 239000002245 particle Substances 0.000 claims description 24
- 210000003491 Skin Anatomy 0.000 claims description 12
- RAHZWNYVWXNFOC-UHFFFAOYSA-N sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 10
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 10
- 239000001569 carbon dioxide Substances 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 9
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000005755 formation reaction Methods 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 claims description 4
- 229910000464 lead oxide Inorganic materials 0.000 claims description 4
- 230000001590 oxidative Effects 0.000 claims description 4
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims 4
- 238000010438 heat treatment Methods 0.000 claims 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims 3
- 238000000889 atomisation Methods 0.000 claims 2
- 150000001875 compounds Chemical class 0.000 claims 2
- -1 B. rolling Chemical compound 0.000 claims 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate dianion Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims 1
- 229910000003 Lead carbonate Inorganic materials 0.000 claims 1
- 208000008425 Protein Deficiency Diseases 0.000 claims 1
- 239000002253 acid Substances 0.000 claims 1
- 238000000354 decomposition reaction Methods 0.000 claims 1
- 238000004090 dissolution Methods 0.000 claims 1
- 238000009826 distribution Methods 0.000 claims 1
- 239000003792 electrolyte Substances 0.000 claims 1
- 238000000605 extraction Methods 0.000 claims 1
- 238000005242 forging Methods 0.000 claims 1
- 150000002611 lead compounds Chemical class 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 238000002844 melting Methods 0.000 claims 1
- 238000002156 mixing Methods 0.000 claims 1
- 125000001820 oxy group Chemical group [*:1]O[*:2] 0.000 claims 1
- 238000002360 preparation method Methods 0.000 claims 1
- 230000000750 progressive Effects 0.000 claims 1
- 238000005096 rolling process Methods 0.000 claims 1
- 230000000087 stabilizing Effects 0.000 claims 1
- 230000002459 sustained Effects 0.000 claims 1
- 230000002522 swelling Effects 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 description 2
- 210000001503 Joints Anatomy 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical class [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
Description
punkt des Bleis. Das Molverhältnis zwischen Sauerstoff- und Schwefeloxyd kann in der Oxydationsatmosphäre in einem Bereich von 5 : 50, vorzugsweise zwischen^;10;: 30, liegen.point of lead. The molar ratio between oxygen and sulfur oxide can be in the oxidizing atmosphere in a range of 5:50, preferably between ^; 10 ; : 30, lie.
Bereits oxydierte Bleipartikeln, die zwecks Entfernung des Kohlendioxyds in bekannter Weise erhitzt worden sind, können mit einem Schwefeloxyd bei Temperaturen zwischen 100 und 3500C behandelt werden.Already oxidized lead particles, which for the removal of carbon dioxide have been heated in a known manner, can be treated with a sulfur oxide at temperatures between 100 and 350 0 C.
Folgendes Beispiel zeigt die Herstellung von dispersionsgehärtetem Blei aus Pulver nach einem Verfahren gemäß der Erfindung:The following example shows the production of dispersion hardened Powder lead by a method according to the invention:
Bleipulver mit einer durchschnittlichen Partikelgröße von 10 Mikron und einem Oberfiächen-Oxydgehalt von 2,8 % wird 2 Stunden lang unter einem Vakuum von 10~3 mm Hg auf eine Temperatur von 300 bis 31O0C erhitzt, um das Kohlendioxyd zu beseitigen. Nach dem Abkühlen auf 100° C im Vakuum wird das Pulver 30 Minuten lang und bei einer Temperatur von 100° C der Wirkung von trockener, kohlendioxydfreier Luft, die aber Schwefeldioxyd mit einem Partialdruck von 20 mm Hg enthält, ausgesetzt. Ungefähr 0,08 cm3 Gas wird pro Gramm Pulver absorbiert. Eine Probe des behandelten Pulvers zeigt, daß bei einer Erhitzung auf 3350C unter einem Vakuum von 10~3 mm Hg keine wesentliche Gasbildung auftritt. Das Molverhältnis zwischen dem Sauerstoff im Bleioxyd und dem Schwefeldioxyd in der Oxydhaut ist ungefähr 18. Enthält beispielsweise die Behandlungsatmosphäre Wasserdampf mit einem Partialdruck von 4 mm Hg, dann ist die Absorption des Schwefeldioxyds etwas höher. In jedem Fall tritt bei einer nachfolgenden Behandlung des Pulvers bei 1000C keine wesentliche Absorption von Kohlendioxyd ein, weder bei trockener noch bei mit Feuchtigkeit angereicherter Luft, die Kohlendioxyd mit einemLead powder having an average particle size of 10 microns and a Oberfiächen-oxide content of 2.8% is heated for 2 hours under a vacuum of 10 -3 mm Hg at a temperature of 300 to 31o 0 C to eliminate the carbon dioxide. After cooling to 100 ° C in vacuo, the powder is exposed to the action of dry, carbon dioxide-free air for 30 minutes and at a temperature of 100 ° C, but which contains sulfur dioxide with a partial pressure of 20 mm Hg. Approximately 0.08 cm 3 of gas is absorbed per gram of powder. A sample of the treated powder shows that when heated to 335 ° C. under a vacuum of 10 -3 mm Hg, no significant gas formation occurs. The molar ratio between the oxygen in the lead oxide and the sulfur dioxide in the oxide skin is about 18. If, for example, the treatment atmosphere contains water vapor with a partial pressure of 4 mm Hg, the absorption of the sulfur dioxide is somewhat higher. In any case, when the powder is subsequently treated at 100 ° C., no significant absorption of carbon dioxide occurs, neither with dry air nor with air enriched with moisture, which carbon dioxide with a
ίο Partialdruck von 15 bis 20 mm Hg enthält. Daraus
erweist sich die Stabilität des mit einem Schwefeloxyd behandelten Pulvers unter normalen Behandlungsund-
Lagerverhältnissen.
Werden die durch die vorerwähnte Behandlung gewonnenen Partikeln im Vakuum unter Druck von
etwa 4200 kg/cm2 zu einem Barren gepreßt, dann kann dieses dispersionsgehärtete Blei auf herkömmliche
Weise gut verschweißt werden, während die ähnlich verdichteten und stranggepreßten Originalpartikeln
wegen der Gasbildung an der Verbindungsstelle keine zufriedenstellenden Schweißverbindungen ergeben.ίο Contains partial pressure of 15 to 20 mm Hg. This shows the stability of the powder treated with a sulfur oxide under normal treatment and storage conditions.
If the particles obtained by the aforementioned treatment are pressed into a bar in a vacuum under a pressure of about 4200 kg / cm 2 , then this dispersion-hardened lead can be welded well in the conventional way, while the similarly compressed and extruded original particles do not have any due to the formation of gas at the connection point result in satisfactory welded joints.
Das Bleipulver kann aus reinem oder im wesentlichen reinem Blei bestehen, oder es kann in kleinen Mengen, z. B. bis zu 0,25 Gewichtsprozent, die üblichen Legierungsbestandteile, wie Antimon, Kupfer, Tellur und Silber, von denen bekannt ist, daß sie auf Blei eine härtende Wirkung ausüben, aufweisen.The lead powder can consist of pure or substantially pure lead, or it can be in small amounts Quantities, e.g. B. up to 0.25 percent by weight, the usual alloy components such as antimony, copper, tellurium and silver known to have a hardening effect on lead.
Claims (5)
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US52639466A | 1966-02-10 | 1966-02-10 | |
US52639466 | 1966-02-10 | ||
US53731866A | 1966-03-25 | 1966-03-25 | |
US53731866 | 1966-03-25 | ||
US53769566A | 1966-03-28 | 1966-03-28 | |
US53769566 | 1966-03-28 | ||
DES0108181 | 1967-02-06 |
Publications (3)
Publication Number | Publication Date |
---|---|
DE1558636A1 DE1558636A1 (en) | 1972-04-06 |
DE1558636B2 DE1558636B2 (en) | 1972-11-02 |
DE1558636C true DE1558636C (en) | 1973-06-20 |
Family
ID=
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3130392C2 (en) | Process for the production of pure agglomerated valve metal powder for electrolytic capacitors, their use and process for the production of sintered anodes | |
DE2505934B2 (en) | Process for the production of an amalgamable alloy powder and use of the same for the production of dental amalgam | |
DE2222854A1 (en) | Process for the production of low-alloy steel powder with a low content of oxidic components | |
DE2022011A1 (en) | Glycerin trimontanate and process for making the same | |
DE2631906C2 (en) | Metal powder mixture for the production of dental amalgam by rubbing with mercury | |
DE1104930B (en) | Process for the production of hot-pressable stabilized boron nitride | |
DE2549298C2 (en) | Process for the production of a sintered silver-cadmium oxide alloy | |
DE1558636C (en) | Process for the production of dispersion-hardened lead or dispersion-hardened lead alloys | |
CH497535A (en) | Process for the production of a beryllium-aluminum-silver alloy and the alloy produced according to this process | |
DE1558636B2 (en) | Process for producing dispersion-hardened lead or dispersion-hardened lead alloys | |
DE3326835A1 (en) | METHOD FOR PRODUCING CORE FUEL PRODUCTS | |
DE2343278A1 (en) | Tungsten filament | |
DE2612716A1 (en) | DENTAL SILVER ALLOY AND SILVER AMALGAM | |
DE1814113B2 (en) | METHOD FOR PRODUCING A BINDER-FREE PB TIEF 3 0 TIEF 4 GRANULE | |
DE2013038B2 (en) | PROCESS FOR THE PRODUCTION OF TUNGSTEN OR MOLYBDAEN POWDER MIXTURES CONTAINING COPPER OR SILVER | |
DE69636580T2 (en) | PROCESS FOR PREPARING ALUMINUM NITRIDE | |
DE1267844B (en) | Reduction of discoloration in the production of molded articles from polytetrafluoroethylene | |
DE2050194A1 (en) | Process for the production of chromium-bearing iron or steel objects | |
DE1758980C2 (en) | The welding of certain zones during the autogenous welding of two metal parts, in particular made of copper or copper alloys, prevents a mixture | |
CH250118A (en) | Process for the production of light metal bodies and bodies produced by this process. | |
DE3311862A1 (en) | SELENIUM AMALGAM ALLOYS FOR DENTAL RESTORATIONS AND METHOD FOR THEIR PRODUCTION | |
DE1294025B (en) | Process for the production of dispersion strengthened lead | |
DE2327884A1 (en) | PROCESS FOR THE MANUFACTURING OF POROUS METAL CERAMICS AND METAL BODIES | |
DE1558533A1 (en) | Method and means of making beryllium-aluminum compositions | |
AT233847B (en) | Powder metallurgical process for the production of bodies from magnesium or an alloy with a predominant magnesium content |