Abstract: TO ENHANCE THE COMPREHENSIVE PERFORMANCE OF HIGH-CHROMIUM CAST IRON OPEN-ARC HARDFACING COATINGS UNDER IMPACT–WEAR CONDITIONS, COATINGS WERE FABRICATED USING STEADY MAGNETIC FIELD AND PULSED MAGNETIC FIELD, EACH COUPLED WITH AIR COOLING AND WATER COOLING, RESPECTIVELY. THE SYNERGISTIC EFFECTS OF MAGNETIC FIELD AND COOLING METHOD ON MICROSTRUCTURE, MECHANICAL PROPERTIES, AND WEAR RESISTANCE WERE SYSTEMATICALLY INVESTIGATED. THE MICROSTRUCTURE, PHASE COMPOSITION, HARDNESS DISTRIBUTION, AND WEAR RESISTANCE OF THE COATINGS WERE CHARACTERIZED BY SCANNING ELECTRON MICROSCOPY (SEM), X-RAY DIFFRACTION (XRD), VICKERS HARDNESS TESTING, AND FRICTION-AND-WEAR TESTING. THE RESULTS DEMONSTRATE THAT THE STEADY MAGNETIC FIELD EFFECTIVELY REFINES GRAINS AND REDUCES ELEMENTAL SEGREGATION THROUGH ELECTROMAGNETIC STIRRING, INCREASING THE HARDNESS OF AIR-COOLED AND WATER-COOLED COATINGS TO 705.1 HV AND 708.5 HV, RESPECTIVELY. HOWEVER, THE COUPLING OF WATER COOLING WITH AN INTENSE STEADY MAGNETIC FIELD PROMOTES CHROMIUM REDISTRIBUTION TOWARD THE HEAT-AFFECTED ZONE, RESULTING IN COARSE ACICULAR MARTENSITE AND CONSEQUENTLY COMPROMISED INTERFACIAL INTEGRITY OF THE FUSION ZONE. ALTHOUGH THE PULSED MAGNETIC FIELD OFFERS LIMITED IMPROVEMENT IN HARDNESS, IT EFFECTIVELY MITIGATES CHROMIUM MIGRATION. WEAR TESTS INDICATE THAT THE AIR-COOLED STEADY MAGNETIC FIELD SPECIMEN EXHIBITS THE MINIMUM WEAR SCAR DEPTH OF 4.45 ΜM UNDER SLIDING WEAR, REPRESENTING A 19.5% REDUCTION COMPARED WITH THE AIR-COOLED SPECIMEN WITHOUT MAGNETIC FIELD. IN CONTRAST, THE AIR-COOLED PULSED MAGNETIC FIELD SPECIMEN DEMONSTRATES THE OPTIMAL IMPACT–WEAR RESISTANCE, WITH A WEIGHT LOSS OF MERELY 21 MG. THIS STUDY PROVIDES A THEORETICAL BASIS AND TECHNICAL REFERENCE FOR OPTIMIZING THE OPEN-ARC HARDFACING PROCESS OF IMPACT–WEAR-RESISTANT COMPONENTS SUCH AS CRUSHER HAMMERS.