The figure shows the graphite morphology of cast iron prepared under different vibration frequencies. Figures (a) – (d) show the graphite morphology of cast iron prepared at vibration frequencies of 0, 35, 50 and 100Hz respectively. It can be seen from the figure that the vibration frequency has a...
The figure shows the matrix structure of spiral cast iron with different wall thickness. Among them, figures (a) – (c) are the matrix structure diagrams of samples with thickness of 20,40 and 60mm respectively. The statistical values of pearlite content in Vermicular Cast Iron with different wall thickness are...
The figure shows the primary austenite structure of nodular cast iron with different wall thickness. Among them, figures (a) – (c) are the primary austenite structure diagrams in samples with thickness of 20, 40 and 60mm respectively. It can be seen from the figure that in the sample with...
The figure shows the graphite morphology of vermicular graphite cast iron with different wall thickness. Among them, figures (a) – (c) are graphite morphology diagrams in samples with thickness of 20,40 and 60mm respectively. It can be seen from the figure that the wall thickness of the sample has...
Y-shaped samples were used. The burden ratio was 85% of cast pig iron and 15% of Q235 steel. The addition of inoculant and vermicularizing agent were 0.4% and 0.5% of the burden mass fraction respectively. The inoculation and vermicularizing treatment were carried out in the ladle. The treatment temperatures...
Compared with gray cast iron, graphite in vermicular graphite cast iron is short and thick, curved and worm like. Because the density of vermicular graphite cast iron (i.e. the ratio of width and length of graphite shape i/d) is much larger than that of flake graphite in gray cast...
Because vermicular graphite cast iron has the properties of both nodular cast iron and gray cast iron, it has unique uses and has achieved good results in the application of ingot mold, automobile engine, exhaust pipe, glass mold, diesel engine cylinder head, brake parts and so on. In particular,...
The as cast matrix structure of vermicular iron is characterized by high ferrite content (40% ~ 50% or higher), but pearlite stabilizing elements (such as copper, tin, antimony, etc.) can also be added to obtain as cast pearlite matrix with a content of about 70%. Pearlite matrix can also...
The grade of vermicular graphite cast iron is: rut + Digital. In the brand, “rut” is the capital prefix of the Chinese Pinyin of the word “vermicular iron”, which is the code of vermicular cast iron; The following number indicates the minimum tensile strength. For example, the brand RuT300...
Vermicular graphite cast iron is a kind of gray cast iron with transition form between flake and spherical graphite. It is a new engineering structural material characterized by good mechanical and thermal conductivity and low section sensitivity. Vermicular graphite cast iron appeared in the 1960s as a new type...