Thermometric bimetallic structure of high strength at high tempe

Details Thermometric bimetallic structure of high strength at high tempe Thermometric bimetallic structure of high strength at high tempe

1976-06-22

1977-03-22

Steiner, Arthur J.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

75123B, 75123N, 75123J, 75123K, 75128A, 75128N, 75128G, 75128V, 75128W, B32B 1518, C22C 3804, C22C 3812, C22C 3846

Patent

active

040134253

ABSTRACT:
A thermometric bimetallic structure of high strength at elevated temperatures of, say, 500.degree. C to 700.degree. C, comprises an active component and a passive component secured together, the active component having a coefficient of thermal expansion of about 19 .times. 10.sup.-.sup.6 .degree.C.sup.-.sup.1 to 22 .times. 10.sup.-.sup.6 .degree. C.sup.-.sup.1 while the passive component has a coefficient of expansion of 3 .times. 10.sup.-.sup.6 .degree. C.sup.-.sup.1 to 12 .times. 10.sup.-.sup.6 .degree. C.sup.-.sup.1. The active component, which expands to a substantially greater extent than the passive component upon heating, consists of 0.4 to 0.9% by weight carbon, 0.03 to 0.1% by weight nitrogen, 10 to 14% by weight nickel, 3 to 7% by weight manganese, 0.2 to 1% by weight niobium and/or tantalum, 0.5 to 1.5% by weight vanadium, up to 1.5% by weight molybdenum, up to 1.5% by weight tungsten, up to 3.5% by weight chromium, up to 0.5% by weight silicon and the balance iron and unavoidable impurities resulting from the melting of the ingredients to form the alloy. The laminate of the two components can be cold worked to improve its hardness.

REFERENCES:
patent: 2700627 (1955-01-01), Nelson
patent: 3318690 (1967-05-01), Floreen et al.
patent: 3336119 (1967-08-01), Alban et al.

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