Rapid cooling method for parts by convective and radiative transfer
OwnerLinda Lefevre, Didier Domergue +3inventors
InventorsLinda Lefevre, Didier Domergue, Florent Chaffotte, Aymeric Goldsteinas, Laurent Pelissier
Life of this patent
Estimating the term…
Abstract
A rapid cooling method for metal parts, using a pressurized cooling gas, characterized in that the cooling gas comprises one (or several) principal gas(es) absorbing infra-red radiation, selected in such a way as to improve thermal transfer to the part by combining radiative and convective transfer pheonomena in order to optimize the convective transfer coefficient.
Claims16
1-14. (canceled)
A method which may be used for rapidly cooling metal parts with a pressurized cooling gas mixture, wherein:
- a) said mixture comprises at least one infrared radiation absorbing gas;
- and
- b) said mixture has convective heat transfer properties superior to those of nitrogen in similar cooling conditions.
A method which may be used for rapidly cooling metal parts with a pressurized cooling gas in an apparatus, said method comprising:
- a) cooling said parts with said cooling gas, wherein said cooling gas comprises:
- 1) about 20% to about 80%, of the total cooling gas volume, of an infrared absorbing gas;
- and
- 2) about 80% to about 20%, of the total cooling gas volume, of a second gas, wherein said second gas comprises at least one member selected from the group consisting of:
- i) hydrogen;
- ii) helium;
- and
- iii) mixtures thereof;
- and
- b) adjusting the composition of said cooling gas so that significant later changes to said apparatus are unnecessary.
Dependencies are inferred from the claim text.