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A METHOD FOR INVESTIGATING THE DEGASIFICATION PROCESS OF STEEL DURING VACUUM TREATMENT,
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
Pagination or Media Count:
The apparatus and procedure are described for sampling molten steel during vacuum degassing, consisting essentially of a quartz tube sampler which can be immersed into molten steel, taking a sample, and withdrawing it without breaking the vacuum. Before sampling a piece of A1 wire is placed into the tube to react with the oxides. Samples can be taken at a rate of one every 30 sec. The samples are cooled and placed into calibrated eudiometers filled with alc. after 5 days, the amt. of evolved H is measured and the amt. of residual H is detd. by vacuum heating. Essentially, the method det. gas content remaining in the metal rather than the gas evolved it can be used for detg. other gases or for complete chemical analysis.
APPROVED FOR PUBLIC RELEASE