FIELD: metallurgy.
SUBSTANCE: invention can be used for arc and plasma-jet hard-facing of wear-resistant layers on cars parts, operating in conditions of action of abrasive wear, impact loads, erosion at increased temperatures. Bars consist of cast compound materials on the basis of high-strength casting aluminium alloys, hardened by discrete high-modular, high-duty ceramic particles of silicon carbide (α-SiC) of hardness HV 1000. Amount of hardening particles in matrix alloy at its mid-size 28 or 40 mcm is 3-8 wt % or 3-10 wt %, respectively. Amount of silicon in matrix alloy is 7-12 wt %. Composite melt is poured by dimensions of bars for overlaying welding according to GOST 21449-75.
EFFECT: high strength and wearing capacity.
3 cl, 1 tbl, 2 dwg
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