In　the　roll　welding　composite　manufacture,　in　order　to　save　precious　carbon,　improve　cost-effective　of　hardfacing　material,　the　submerged　arc　welding　of　flux-cored　wires　is　used　while　the　deposited　metal　remained　unchanged　in　order　to　research　the　influence　of　different　carbon,　chromium　adding　ways　to　deposited　metal　microstructure　and　properties.　Through　the　abrasion　hardness,　high　tensile,　high　room　temperature　toughness　and　quantifying　the　amount　of　wear　of　the　sample　before　and　after,　the　relationship　between　microstructure,　adding　ways　and　wear　resistance　is　analyzed　combining　the　microstructure　before　and　after　wear,　scanning　electron　microscopy　and　other　aids.　When　Cr5　series　hardfacing　alloys　are　used,　on　the　basis　of　keeping　the　compositions　of　hardfacing　deposited　metal　unchanged　basically,　it　is　researched　about　the　influence　of　different　addition　ways　of　carbon　and　chromium　on　microstructure　and　properties　of　hardfacing　alloy.　The　results　show　that　the　high-temperature　wear　resistance　of　hardfacing　metal　is　proportional　to　the　high-temperature　strength　and　hardness　of　the　alloy　at　the　temperature　of　600°C,　and　improved　along　with　the　increase　of　alloy　toughness;　for　the　flux-cored　wire　with　direct　addition　of　graphite　and　chromium　powder,　the　wear　resistance　of　hardfacing　deposited　metal　is　much　better　than　that　with　direct　addition　of　chromium　carbide.　High-temperature　wear　results　from　multiple　factors　including　alloy　oxidation,　cutting,　fatigue　cracking　and　stripping,　etc.　Ideal　high-temperature　wear-resistant　hardfacing　material　depends　on　not　only　the　alloying　system　adopted　by　hardfacing　metal,　but　also　other　factors　such　as　microstructure,　anti-oxidation　property,　high-temperature　strength　and　toughness.　Therefore,　changing　the　addition　way　of　alloys　may　strengthen　deposited　metal　without　need　of　modifying　agents　and　external　field　excitation.　©　2012　Journal　of　Mechanical　Engineering.