Abstract
The self-made device to test the shrinkage ratio and temperature of cast ingot is used to measure the shrinkage mass of Fe-0.1%C, Fe-0.15%C, Fe-0.33%C cast ingot with the dimension of 200×80×100mm. The results show that the total shrinkage mass of cast ingot is increased with the increase of carbon content. In the carbon content range of the experiment, the rate of shrinkage and expansion of Fe-0.15%C steel during, before and after eutectoid reaction is all the quickest. The solid-state shrinkage rate of Fe-0.15%C steel before eutectoid reaction is 288 μm•s-1. The shrinkage mass and rate of cast ingot after eutectoid reaction are 0.051 mm and 127 μm•s-1, respectively. The expansion mass and rate of cast ingot during eutectoid reaction are 0.016 mm and 53.3 μm•s-1, respectively.
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