Immersion probe for analysis of gases in molten metal
An immersion probe for analysis of gases in molten metal is provided. The immersion probe generally comprises a gas sampler, a gas injection tube and a porous ceramic filter. The porous ceramic filter has a groove that associates it to the gas sampler, the groove comprising an outer portion and an inner portion with respect to the gas sampler, the inner portion of the porous ceramic filter having an increase in body for better association of the porous ceramic filter to the gas sampler. An adhesive material provides mechanical support of the porous ceramic filter, the adhesive material being located in both the inner portion and the outer portion of the gas sampler.
1. An immersion probe for analysis of gases in molten metal, the immersion probe comprising:
a gas sampler; and
a porous ceramic filter,
wherein:
the gas sampler comprises an end portion that is associated to the porous ceramic filter, the gas sampler having an inner portion and an outer portion with respect to the end portion;
the association between the end portion of the gas sampler and the porous ceramic filter is configured such that the ceramic material of the porous ceramic filter substantially surrounds the end portion of the gas sampler from its inner portion to its outer portion;
the ceramic filter comprises a groove that has adhesive material for mechanical support of the gas sampler, located at the association of the end portion with the groove, in both the inner portion and the outer portion of the gas sampler;
the adhesive material surrounds the end portion of the as sampler; and
the adhesive material disposed in the inner portion of the as sampler is structurally different from the adhesive material disposed in the outer portion of the as sampler.
2. An immersion probe for analysis of gases in molten metal according to claim 1 , wherein the porous ceramic filter comprises an increase in its body in the inner portion of the gas sampler.
3. An immersion probe for analysis of gases in molten metal according to claim 2 , wherein the groove of the porous ceramic filter has a front face, which defines a plane parallel to a plane defined by the inner portion and to a plane defined by the outer portion.
4. An immersion probe for analysis of gases in molten metal according to claim 3 , wherein the inner portion and the outer portion have the same height as the plane defined by the back portion of the porous ceramic filter.
5. An immersion probe for analysis of gases in molten metal according to claim 3 , wherein the planes defined by the inner portion and the outer portion have different heights relative to a height of the plane defined by the back face of the porous ceramic filter.
6. An immersion probe for analysis of gases in molten metal according to claim 2 , wherein the amount of adhesive material disposed in the inner portion is different from the amount of adhesive material disposed in the outer portion.
7. An immersion probe for analysis of gases in molten metal according to claim 6 , wherein the adhesive material disposed in the inner portion of the gas sampler is flush with a surface of the ceramic filter.
8. An immersion probe for analysis of gases in molten metal according to claim 1 , wherein the gas sampler has a cylindrical shape.
9. An immersion probe for analysis of gases in molten metal according to claim 1 , wherein the gas sampler comprises a gas injection tube in its inner portion.
10. An immersion probe for analysis of gases in molten metal according to claim 9 , wherein the gas injection tube has a cylindrical shape.
11. An immersion probe for analysis of gases in molten metal according to claim 9 , wherein the gas sampler and the gas injection tube are concentric.
12. An immersion probe for analysis of gases in molten metal according to claim 9 , wherein the gas injection tube is constituted by quartz.
13. An immersion probe for analysis of gases in molten metal according to claim 1 , wherein the gas sampler is constituted by quartz.