Process for connecting frogs consisting of austenitic manganese

Details Process for connecting frogs consisting of austenitic manganese Process for connecting frogs consisting of austenitic manganese

1986-07-10

1988-02-16

Godici, Nicholas P.

Metal founding

Process

Shaping liquid metal against a forming surface

164108, 164125, 228198, 228200, 228241, B22D 2300, B22D 1500

Patent

active

047248904

ABSTRACT:
For the purpose of connecting frogs consisting of austenitic manganese steel casting with rails consisting of carbon steel there is proposed an aluminothermic process in which the carbon content of the aluminothermic welded connection is limited with 0.2 percent by weight. In this case, the procedure is preferably such that the composition of the melt corresponds, as related to the Schaffler-diagram, to a Ni-equivalent of 13 to 35 percent and to a Cr-equivalent of 8 to 25 percent, noting that for a carbon content of .ltoreq.0.15 percent and preferably .ltoreq.0.1 percent, the equivalent value for Ni is 1x%Ni+30x%C+0.5%Mn and the equivalent value for Cr is 1x%Cr+1x%Mo+1.5x%Si.

REFERENCES:
patent: 1569025 (1926-01-01), Pennington
patent: 4005741 (1977-02-01), Juganson et al.
patent: 4216816 (1980-08-01), Ashton et al.
patent: 4389015 (1983-06-01), Guntermann et al.
Metals Handbook, 8th Edition, vol. 1, p. 3, 1961.

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