Method of generating carrier gas

Details Method of generating carrier gas Method of generating carrier gas

1978-09-19

1981-02-10

Rutledge, L. Dewayne

Metal treatment

Compositions

Heat treating

148 165, 148 166, 252375, B23K 3524

Patent

active

042499658

ABSTRACT:
The present invention is a method of generating Class 302 type carrier gas for use in carburizing processes. The gas has a composition of approximately 40% nitrogen, 40% hydrogen and 20% carbon monoxide. The nitrogen is mixed with the methanol in a vaporizer where the methanol is vaporized. The vaporized methanol and nitrogen mixture is heated in a catalyst filled retort where methanol reacts to yield hydrogen and carbon monoxide. The relative volume percents of the nitrogen, hydrogen, and carbon monoxide is substantially the same as in the Class 302 type carrier gas.

REFERENCES:
patent: 2673821 (1954-03-01), Stutzman
patent: 3201290 (1965-08-01), Wyss
patent: 3519257 (1970-07-01), Winter et al.
patent: 3620518 (1971-11-01), Winter et al.
patent: 4051231 (1977-09-01), Bond et al.
The Metals Handbook, 8th Edition, vol. 2, Heat Treating Cleaning and Finishing, ASM Handbook Committee, p. 94.

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