For the manifold of sedan engine, the hest thermal fatigue properties can be obtained by keeping the percent of vermicular graphite at about 50%, therefore it shouldn't he considered that the lowest e.g. percent limit of 50% specified in Chinese Vermicula
For the manifold of sedan engine, the hest thermal fatigue properties can be obtained by keeping the percent of vermicular graphite at about 50%, therefore it shouldn't he considered that the lowest e.g. percent limit of 50% specified in Chinese Vermicula
摘要对轿车发动机排气歧管而言，蠕化率控制在50%左右可以获得最佳的抗热疲劳性能，因此不能认为我国的蠕铁标准中规定的蠕化率高于50%的要求偏低了，也不能把蠕化率的高低作为衡量工艺水平的依据。