Process for "Black Fabrication" of molybdenum and molybdenum all

Details Process for "Black Fabrication" of molybdenum and molybdenum all Process for "Black Fabrication" of molybdenum and molybdenum all

1977-03-01

1978-03-07

Stallard, W.

Metal treatment

Compositions

Heat treating

148 115P, C22F 118

Patent

active

040778118

ABSTRACT:
A process for the manufacture of molybdenum-base wrought products, commencing with a mass of metallic molybdenum or an alloy containing at least 50% molybdenum that is only moderately heated to within the temperature range of 500.degree. F to about 1200.degree. F; and while in an essentially "black-warm" condition (as contrasted to a red-hot condition) is deformed to wrought semi-finish products of the desired configuration, employing conventional working methods such as forging, rolling, or similar processes. The starting billet genesis can be either from vacuum-arc-cast or powder metallurgy ingot that is extruded at a temperature of about 1500.degree. F to 2500.degree. F, whereafter the extruded billet is annealed by heating for about one hour or longer to a temperature of from 2000.degree. F up to about 3000.degree. F to obtain a substantially fully annealed condition.
The "Black Fabricated" wrought product is generally stress relieved for an appropriate time at temperatures ranging from 1500.degree. F to about 2500.degree. F and normally surface conditioned to produce marketable mill products, such as sheet, plate, rods, bars, forged shapes and the like.

REFERENCES:
patent: 2666721 (1954-01-01), Bechtold et al.
patent: 2667435 (1954-01-01), Marden et al.
patent: 2678272 (1954-05-01), Ham et al.

Affiliated with

Also associated with

Rating

Process for "Black Fabrication" of molybdenum and molybdenum all does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for "Black Fabrication" of molybdenum and molybdenum all, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for "Black Fabrication" of molybdenum and molybdenum all will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2018948