AT126560B - Process for producing a protective layer consisting of hydrocarbons in chromium baths. - Google Patents
Process for producing a protective layer consisting of hydrocarbons in chromium baths.Info
- Publication number
- AT126560B AT126560B AT126560DA AT126560B AT 126560 B AT126560 B AT 126560B AT 126560D A AT126560D A AT 126560DA AT 126560 B AT126560 B AT 126560B
- Authority
- AT
- Austria
- Prior art keywords
- hydrocarbons
- protective layer
- producing
- layer consisting
- chrome
- Prior art date
Links
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims description 11
- 229930195733 hydrocarbon Natural products 0.000 title claims description 9
- 150000002430 hydrocarbons Chemical class 0.000 title claims description 9
- 239000011241 protective layer Substances 0.000 title claims description 9
- 238000000034 method Methods 0.000 title claims description 3
- 229910052804 chromium Inorganic materials 0.000 title description 2
- 239000011651 chromium Substances 0.000 title description 2
- 239000003595 mist Substances 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Electroplating And Plating Baths Therefor (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zur Erzeugung einer ans Kohlellwasserston'en bestehenden Schutzschicht bei Chrombädern.
Bei der galvanischen Verchromung entstehen wie bekannt Wasserstoff und Sauerstoff, Gase, welche beim Aufsteigen aus der Badflüssigkeit den giftigen Chromelektrolyten mit sich reissen und welche sich in fein verteilter Form als Nebel mit der Aussenluft vermischen. Hiedurch entstehen die äusserst giftigen Chromnebel, die bisher durch umfangreiche Exhaustoranlagen beseitigt wurden.
Die Erfindung betrifft nun ein Verfahren zur Erzeugung einer Schutzschicht bei Chrombädern zur Verhinderung von Chromnebelbildungen, wodurch bei der Verchromung die bisher üblichen Exhaustoranlagen nicht mehr erforderlich sind.
Der Erfindung gemäss wird die Schutzschicht aus hydrierten Kohlenwasserstoffen, d. h. solchen, die durch Anlagerung von Wasserstoff an bereits bestehende Kohlenwasserstoffe entstanden sind, für sich allein oder auch in Mischung mit natürlichen Kohlenwasserstoffen gebildet, indem eine entsprechende Menge hievon auf die Oberfläche der Badflüssigkeit aufgebracht wird. Das Wesen der so hergestellten Schutzschicht besteht darin, dass die Chromelektrolytteilchen in ihrer Aufwärtsbewegung weitgehendst abgebremst werden. Wasser-und Sauerstoff können die Schutzschicht verlassen, dagegen können die Flüssigkeitsteilchen infolge ihres grösseren spezifischen Gewichts nicht über die Schutzschicht hinauskommen, da ihr Energicvorrat durch die Bremswirkung in der Schutzschicht gänzlich aufgezehrt würde.
Die hydrierten Kohlenwasserstoffe eignen sich besonders und sind dem für ähnliche Zwecke bereits vorgeschlagenen Kerosen deshalb vorzuziehen, weil sie einen höheren Entflammungspunkt haben und daher nicht so feuergefährlich sind. Sie wirken auch weniger fettend und sind, was sehr wichtg ist, nicht giftig.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for producing a protective layer on the carbon dioxide in chrome baths.
As is well known, the galvanic chrome plating creates hydrogen and oxygen, gases which, when rising from the bath liquid, carry the toxic chrome electrolyte with them and which mix in finely divided form with the outside air as a mist. This creates the extremely poisonous chrome mist that was previously removed by extensive exhaust systems.
The invention now relates to a method for producing a protective layer in chrome baths to prevent the formation of chrome mist, which means that the previously customary exhaustor systems are no longer required for chrome plating.
According to the invention, the protective layer is made of hydrogenated hydrocarbons, i.e. H. those that have arisen through the addition of hydrogen to already existing hydrocarbons are formed on their own or in a mixture with natural hydrocarbons by applying a corresponding amount of them to the surface of the bath liquid. The essence of the protective layer produced in this way is that the upward movement of the chromium electrolyte particles is largely slowed down. Water and oxygen can leave the protective layer, on the other hand, due to their greater specific weight, the liquid particles cannot get beyond the protective layer, since their energy supply would be completely consumed by the braking effect in the protective layer.
The hydrogenated hydrocarbons are particularly suitable and are to be preferred to kerosene, which has already been proposed for similar purposes, because they have a higher ignition point and are therefore not as flammable. They are also less greasy and, very importantly, are non-toxic.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT126560T | 1929-04-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT126560B true AT126560B (en) | 1932-01-25 |
Family
ID=3634833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT126560D AT126560B (en) | 1929-04-09 | 1929-04-09 | Process for producing a protective layer consisting of hydrocarbons in chromium baths. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT126560B (en) |
-
1929
- 1929-04-09 AT AT126560D patent/AT126560B/en active
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