Crucibles for molten magnesium and method of forming

Details Crucibles for molten magnesium and method of forming Crucibles for molten magnesium and method of forming

1980-12-29

1982-10-12

Rutledge, L. Dewayne

Metallurgical apparatus

Means for holding or supporting work

Receptacle

266242, 75 65R, 220DIG29, 432262, C21B 300, C22B 700

Patent

active

043535356

ABSTRACT:
A crucible for containing molten magnesium, and a process for forming the crucible. The crucible is formed from ferritic stainless steel, and particularly type 444 stainless steel plate. The method involves forming ferritic stainless steel plate into component parts of the crucible, while maintaining the ferritic stainless steel plate at temperatures above about 200.degree. F. but below the "blue brittle" temperature range. Further, the method involves special techniques for welding the crucible parts. Specifically, the crucible parts are preheated to a temperature of 100.degree.-150.degree. C. and are completely welded by a process utilizing multiple welding passes with a special metal inert gas shielded welding technique before any cool down of the crucible parts below 100.degree. C. is allowed. The welds extend completely through the crucible walls, which are the thickness of steel plate, and completely incorporate the crucible parts while being essentially free of cracks.

REFERENCES:
patent: 655457 (1900-08-01), Savery
patent: 2071233 (1937-02-01), Merk
patent: 2110891 (1938-03-01), Bitterfeld et al.
patent: 2183715 (1939-12-01), Franks
patent: 2209402 (1940-07-01), Kepler
patent: 2244064 (1941-06-01), Hodge
patent: 2633419 (1953-03-01), Pyk

Affiliated with

Also associated with

Rating

Crucibles for molten magnesium and method of forming does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Crucibles for molten magnesium and method of forming, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Crucibles for molten magnesium and method of forming will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-220340