Method of producing copper-chromium fusion alloys as contact mat

Details Method of producing copper-chromium fusion alloys as contact mat Method of producing copper-chromium fusion alloys as contact mat

1984-01-27

1985-08-27

Rutledge, L. Dewayne

Alloys or metallic compositions

Processes

75 10R, 75 10C, 75 65EB, 75 65ZM, 219121PB, 219121LF, 420495, 420428, C22C 102

Patent

active

045377456

ABSTRACT:
A method of producing copper-chromium fusion alloys having a chromium content of at least 25% by mass and at most 60% by mass with a homogeneous macrostructure without lattice defects and without shrink holes or pipes, which can be used as contact material for vacuum power switches with breaking currents exceeding 10kA. According to the invention, during fusing of the starting material to the fusion alloy a superheating to at least 2000.degree. C. is obtained at least in a partial zone of the instantaneous melt volume. Thereafter the melt is cooled at a cooling rate such that no primary Cr precipitation or segregation occurs.

REFERENCES:
patent: 3125441 (1964-03-01), Lafferty et al.
patent: 3615345 (1971-10-01), King
patent: 3827883 (1974-08-01), Neely
patent: 4008081 (1977-02-01), Hundstad
patent: 4481030 (1984-11-01), Schmidt et al.

Affiliated with

Also associated with

Rating

Method of producing copper-chromium fusion alloys as contact mat does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of producing copper-chromium fusion alloys as contact mat, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing copper-chromium fusion alloys as contact mat will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2000944