Method for the assessment of the effectiveness of the process of high-chromium cast iron modification

摘要

evaluation of effectiveness wysokochromowego procedure modification iron containing 8 - 25% w / w cr is characterized by the fact that the molten metal before and after surgery modification urinating into shape, having at least two recess of circular or square and the dia dnicy or length of side of 5 to 30 mm.with the obtained rods performs samples for research metalograficznych which undergo digestion, and then under the microscope counts the quantity of grains ru00f3wnoosiowych. the effect of the modification is satisfactory if the number of grains ru00f3wnoosiowych in samples after surgery the modification is at least about 50% greater than the number of grains ru00f3wnoosiowych obtained in samples without treatment modifications.