Finite Element Simulation Of Composite Rolling Of Stainless Steel/Iron Scrap

The traditional iron recovery by direct investment, briquetting furnace method, a large number of pollutants will be produced during the recycling process. Solid state recycling iron can cancel recycled metal liquefaction process, reduce environmental pollution, to achieve the recycling of resources. Currently in China the iron solid-state recycling research is relatively less, stainless steel and iron composite theory and experimental data are very scarce. This paper through the finite element software MSC. Marc to simulate the process of stainless steel/ iron scrap composite rolling, the influence of different rolling technology for composite is studied.First of all, this paper introduces the stainless steel composite plate to the domestic and foreign research status, production method and iron solid-state recycling situation, provides the theoretical support for the following simulation. The elastic-plastic finite element method and powder material model are studied, and the related parameters, such as Poisson ratio, elastic modulus, yield strength and so on, are determined. Powder material in the deformation process due to the presence of porosity, the law of constant volume is no longer applicable, powder material deformation according to the conditions of constant mass, so the Shima Oyane constitutive model as the iron material yield criterion.Using the established model, analyzes the change of the overall size, relative density of different iron thickness of stainless steel in rolling process; study the different first pressing quantity of the rolling process of strip lateral dimensions, composite thickness ratio and component deformation amount of change; the effects of rolling, coating materials, iron content and roll diameter on the rolling results. Through the study found that using iron powder structure, simulation results and experimental results are more close to. Increase of thick wall stainless steel, increase first pressing amount, with the increase of the rolling can improve between two metal contact normal stress, but smaller pressure quantity of the rolling is more conducive to the stainless steel wall thickness uniform distribution. These lay a theoretical foundation for the stainless steel/ iron scrap composite rolling iron core shaft of three to the compressive stress with rolling passes increased and increased by a big margin, can effectively reduce the iron filings with stainless steel tube inner holes.