YD224耐磨藥芯焊絲YD224耐磨藥芯焊絲  規格；1.2-1.6-2.0-2.4-3.0-4.0，                                                            化學成分；C.   0.25-0.4，Cr    5-7，Mo  1-1.5，W  1-1.5，V  0.3-0.5，Ni  0.3-0.5，                                                                                硬度；50-55，                                                                                                     適用范圍；鋼廠軋輥，輸送輥，支撐輥，輸送帶輪的耐磨堆焊，及礦山煤礦機械的耐磨堆焊，注意事項；焊前清理表面，預熱200-300度，焊后熱處理，