FIELD: metallurgy.
SUBSTANCE: powder composition, containing mixture of magnetically-soft powder of iron or on base of iron, particles of which are surrounded with electric insulating non organic coating and 0.05 to 1.5 wt % of organic lubricant not containing metal and with temperature of evaporation less, than temperature of coating decomposition, is moulded in a die. A moulded ingot is pushed from the die; lubricant is removed by heating in not-reducing atmosphere to temperature above temperature of lubricant evaporation and below temperature of decomposition of non organic coating. Further there is performed heat treatment at temperature between 300°C and 600°C in water steam.
EFFECT: magnetically-soft composite items possess lateral rupture strength 100 MPa, magnetic permeability 700 and losses in core at 1 Tl and 400 Hz.
25 cl, 2 dwg, 8 tbl, 8 ex
