Use of biodegradable hydrocarbon fluids for aluminium cold-rolling
The invention is the use, as oil for aluminium and aluminium alloys cold rolling, of a fluid having a boiling point in the range of from 200° C. to 400° C. and a boiling range below 80° C., said fluid comprising more than 95% by weight isoparaffins and less than 3% by weight of naphthens, a biocarbon content of at least 95% by weight, containing less than 100 ppm by weight aromatics.
1. Method for aluminium and aluminium alloys cold rolling, said method comprising:
using, as a cold rolling oil, a fluid comprising more than 95% by weight isoparaffins and less than 3% by weight of naphthenes, a biocarbon content of at least 95% by weight, containing less than 100 ppm by weight aromatics, wherein the boiling range of the fluid is selected from 240° C.-275° C., 250° C.-295° C. or 285° C.-335° C.
2. Method of claim 1 , comprising:
using the fluid as a neat oil.
3. Method of claim 1 , comprising:
cold rolling foils having a thickness from 10 to 0.15 mm.
4. Method of claim 1 , wherein the fluid has a viscosity at 40° C. of about 2.5 cSt.
5. Method of claim 1 , wherein the fluid contains less than 50 ppm by weight aromatics.
6. Method of claim 1 , wherein the fluid contains less than 1% by weight of naphthenes by weight.
7. Method of claim 1 , wherein the fluid contains less than 5 ppm sulphur.
8. Method of claim 1 , wherein the fluid has a biodegradability at 28 days of at least 60%, as measured according to the OECD 306 standard.
9. Method of claim 1 , wherein the fluid contains less than 500 ppm of naphthenes, less than 20 ppm of aromatics, and less than 3 ppm of sulphur.
10. Method of claim 1 , wherein the fluid contains less than 500 ppm by weight of naphthenes.
11. Method of claim 1 , wherein the fluid contains less than 50 ppm by weight of aromatics and less than 500 ppm by weight of naphthenes.
12. Method of claim 1 , wherein the fluid contains less than 20 ppm by weight of aromatics and less than 50 ppm by weight of naphthenes.
13. Method of claim 1 , comprising cold rolling foils having a thickness from 1.5 to 0.06 mm.
14. Method of claim 1 , wherein the fluid has a viscosity at 40° C. of about 3 cSt.
15. Method of claim 1 , wherein the fluid has a viscosity at 40° C. of about 4 cSt.
16. Method for aluminium and aluminium alloys cold rolling, said method comprising:
using, as a cold rolling oil, a fluid having an initial boiling point and a final boiling point in the range of from 240° C. to 340° C., a viscosity at 40° C. from about 2.5 cSt to about 4 cSt, and a boiling range below 80° C., said fluid comprising more than 95% by weight isoparaffins and less than 3% by weight of naphthenes, a biocarbon content of at least 95% by weight, containing less than 100 ppm by weight aromatics.