The　interface　formation　and　its　mechanism　of　ZG42CrMo/BTMCr26　bimetallic　castings,　including　hammerheads　and　thin　plates,　are　investigated　in　this　work.　By　extending　the　pouring　interval,　the　interface　area　characteristic　changes　from　local　mixing　solidification　to　shrinkage-filling　solidification.　Both　interfaces　exhibit　high　binding　and　tensile　strength,　exceeding　500　MPa.　The　casting　bimetallic　plates　display　a　straight　sequentially　solidified　interface　with　a　carbide-free　zone　of　approximately　16.5　mu　m.　The　interfacial　adhesion　and　tensile　strength　of　the　plates　also　exceed　500　MPa.　Based　on　the　obtained　results　and　theoretical　basis,　over　20　types　of　crusher　hammers　weighing　between　7　and　250　kg,　as　well　as　various　wear　plates　have　been　produced.　Both　castings　exhibit　high　pass　rate　a　long　lifespan.