CHROME-BASED COATING FOR WEAR-RESISTANT STEEL AND PROCESS FOR PREPARING THE SAME

摘要

The invention relates to a coating for high wear resistance steel and a method for obtaining such a coating. The coating comprises two surface layers, the first of which is surface-treated. CONSISTING OF THE PHASE (CR, FE) B AND POSSIBLY THE MC PHASE, THE OTHER INTERNAL CONSTITUTED BY THE PHASE (FE, CR) B. TO OBTAIN THIS COATING, BORING AT A TEMPERATURE LESS THAN OR EQUAL TO 950C SHALL BE CARRIED OUT FOR A PERIOD OF ABOVE OR ABOVE AT 4 HOURS THEN A CHROMIZATION AT A TEMPERATURE OF LESS THAN OR EQUAL TO 950C FOR A TIME OF MORE THAN 10 HOURS. / P P APPLICATION TO ALL STEELS TO INCREASE THEIR WEAR RESISTANCE. / P