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将铸态高铬模具钢试样经不同方向的反复变形试验后，结果表明共晶炭化物组织的破碎过程包括网状组织的分散和片状炭化物颗粒的折断两个方面。当铸志晶粒度力４～５级寸，破碎晶炭化物组织需要有６０％以上的拉应变。不同方向的反复变形使网状组织分散得更好，炭化物颗粒断裂得更细小。 用不同方法将高铭模具钢小钢锭锻成钢材的试验指出，当锻比大于１０时，网状共晶炭化物组织已经破碎，锻比大于１４，会出现带状分布。采用走扁方的引伸，如扁方度大于２，不同方向的走扁方次数在三次以上时，和不走扁方的一般引伸方法比较，钢材达到同样的共晶炭化物破碎程度时锻比可以小些，中心部位破碎得较好。同时当锻比较大时，不出现带状组织。如将钢锭先经过墩粗，压下量大于５０％，然后再用走扁方引伸成钢材，这是破碎共晶炭化物组织最有效的锻造方法。 用带圆弧缺口的冲击试验结果表明冲击值和钢材的共晶炭化物组织破碎程度有密切关系，可以作为性能指标。
The results show that the crushing process of the eutectic carbide structure includes the dispersion of the mesh structure and the breaking of the flaky carbonized particles. When the casting grain size force 4 to 5 inch inch, crushed crystal structure of the carbide needs more than 60% of the tensile strain. Repeated deformation in different directions makes the reticular tissue disperse better, and the carbide particles break up finer. The experiment of using different methods to forge the steel ingot of the high-Ming die steel pointed out that when the forging ratio is more than 10, the reticular eutectic carbide structure has been broken, and the forging ratio is more than 14, and the belt-like distribution appears. With the extension of flat side, such as flat square is greater than 2, the number of different directions to go flat square in more than three times, and do not take a flat side of the general extension method, the same eutectic carbide steel to achieve the degree of crushing can be forged than Smaller, broken center better. At the same time when forging larger, no banding occurs. If the ingot through the pier rough, the reduction of more than 50%, and then take the flat side extended into the steel, which is crushed eutectic carbide organization the most effective forging method. The results of the impact test with a circular notch show that the impact value is closely related to the degree of crushing of the eutectic carbide in the steel and can be used as a performance index.