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4XXX series aluminum alloy of silicon as the main alloying elements are aluminum, high silicon content, the department has many advantages: such as low melting point, good fluidity, easy feeding, so that the final product will not be brittle, mainly used to manufacture adding aluminum welding materials, such as brazing sheet, rod and wire and so on. 4004 high silicon aluminum alloy which wider application. However, 4004 is easy to produce alloys porosity defects, will directly affect the quality of the product and use of safe, porosity defects often appear in the normal process within the processing quality is difficult to guarantee. Current domestic production technology can not solve this problem. In this paper, ABAQUS finite element software, aluminum rolling process is simulated. Explore the rolling process parameters change (reduction, rolling speed, rolling passes), ingot variation of porosity defects and are represented in the form of stress and strain to determine aluminum rolling edge cracks, broken belt produce trend, the final rolling process is given a reasonable solution to solve rolling porosity defects caused due to low lumber technical problems. The main research work is as follows: 1. Using a rotary injection refining technology, by studying the impact of each factor rules to optimize their process parameters, and to find a set of best craft programs to improve aluminum melt degassing rate. After 4004 the refining of aluminum tensile strength, elongation and other mechanical properties are improved; 2. Using ABAQUS finite element analysis software to build aluminum rolling and rolling work roll porosity defects in the finite element model, the realization aluminum Finite Element Dynamic rolling process simulation, finite element simulation parameters set model, based on simulation program gives practical experience, reasonable arrangement reduction, rolling speed, rolling passes inferior rolling process parameters; 3. analysis of pressure The following amounts of simulation programs to ensure the rolling passes, rolling speed, etc. must set reduction were 0.3mm, 1.0mm, simulation analysis porosity defects in different positions rolling stress and strain changes and stomatal defects evolution, determine produce edge cracks, belt possibility of defects; 4 of the rolling speed, rolling pass simulation, the same guarantee that the other process parameters constant, set the rolling speed is 2.0m / s, 5.0m / s, and as a rolling pass times, two times rolling, rolling, respectively, for each simulation parameters change different positions rolling porosity defects stress and strain changes, and the evolution of porosity defects, judgment produce crack edge, belt defect possibilities. According to the simulation results of the analysis: the rolling process parameters change to a different study conditions, aluminum rolling process of rolling the stress and strain distribution law, and in rolled plate surface defects and center vent stress and strain fluctuation trend, too of each simulation parameters for different positions rolling porosity defects evolve into crack edge, belt defect trends influence on the improvement of the production process with some help and guidance.
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