Imphy Ugine Precision

Arcelormittal-stainless and Nickel Alloys

Marc Leroy

Lucien Coutu

Laurent Chaput

Thierry Waeckerle

Herve Fraisse

Yves Grosbety

Hervé Fraisse

An iron-cobalt alloy containing in weight percentages: 10 to 22% of Co; traces to 2.5% of Si; traces to 2% of Al; 0.1 to 1% of Mn; traces to 0.0100% of C, a total of O, N and S content ranging between traces of 0.0070%; a total of Si, Al, Cr, Mo, V, Mn content ranging between 1.1 and 3.5%; a total of Cr, Mo and V content ranging between traces of 3%; a total of Ta and Nb content ranging between traces and 1%; and the rest being iron and impurities resulting from production wherein: 1.23&#xd7;(Al+Mo) %+0.84 (Si+Cr+V) %&#x2212;0.15&#xd7;(Co %&#x2212;15)&#x2266;2.1, and 14.5&#xd7;(Al+Cr) %+12&#xd7;(V+Mo) %+25&#xd7;Si %&#x2267;21. The inventive alloy is useful for making electromagnetic actuator mobile cores.

Iron-cobalt alloy, in particular for the moving core of electromagnetic actuators

The invention concerns an iron-cobalt alloy, characterised in that it comprises in weight percentages: 10 to 22% of Co; traces to 2.5% of Si; traces to 2% of Al; 0.1 to 1% of Mn; traces to 0.0100% of C; a total of O, N and S content ranging between traces and 0.0070%; a total of Si, Al, Cr, Mo, V, Mn content ranging between 1.1 and 3.5%; a total of Cr, Mo and V content ranging between traces and 3%; a total of Ta and Nb content ranging between traces and 1%; the rest being iron and impurities resulting from production; and in that: 1.23&#xd7;(Al+Mo)%+0.84 (Si+Cr+V)%&#x2212;0.15&#xd7;(Co%&#x2212;15)&#x2266;2.1 and in that 14.5&#xd7;. (Al+Cr)%+12&#xd7;(V+Mo)%+25&#xd7;Si%&#x2267;21. The inventive alloy is useful for making electromagnetic actuator mobile cores.

Iron-cobalt alloy, in particular for electromagnetic actuator mobile core and method for making same

Cooking vessel intended to be induction heated, comprising a heating part made of a ferromagnetic alloy having a Curie temperature of between 150&deg; C. and 370&deg; C. and a magnetostriction coefficient &lgr;,&lE;5&times;10,in absolute value. FeNiCuX ferromagnetic alloy for the manufacture of the cooking vessel, the chemical composition of which comprises from 50% to 85% of Ni, less than 50% of Cu, less than 12% of X&equals;Cr&plus;Mo&plus;Mn&plus;Si&plus;Al&plus;W&plus;Nb&plus;V&plus;Ti, the balance being iron and impurities; the composition satisfies the relationships (35/25)&times;(75&minus;Ni)&lE;Cu&lE;(50/35)&times;(85&minus;Ni) and (7/20)&times;(Ni&minus;65)&lE;X&lE;(12/35)&times;(Ni&minus;50). Production method and method of use.

Cooking vessel for induction heating and alloy and method for producing such a vessel

Growing community of inventors

Antony, France

Marc Leroy