Cause Analysis And Control Measures Of Titanium Titanium Dense

Titanium has low density, high strength, resistant high temperature, low temperature performance characteristics, is used in avast rangeof military, aerospace, aviation, medical and other high-end applications. In industry The only way to produce titanium sponge is Mg-thermalreduction, However, Compactness titanium is the general existencein production of titanium sponge products. This compactness titanium is difficult to cut and broken, which will reduce the life of the cutting machine and the crusher. Electrode compaction phenomenon is difficult to suppress the electrode process when titanium sponge in vacuum consumable way ingot furnace,leading to the electrodes block off easily in melting process and affecting cast into ingots quality.This article analysis the main reasons that let the titanium sponge formation compactness titanium, by studying the formation mechanism of titanium sponge, analyzing its internal titanium sponge density distribution,comparing the microstructure and composition of different density of titanium sponge and simulation of the reducing furnace temperature distribution and heat transfer law in the process of titanium sponge production reduction by using ANSYS Workbench 14.0. the main reasons for the compactness of titanium sponge would be these follows:Firstly, high feed speed lead to severe reduction reaction, the temperatureon the central of liquid magnesium surface reached up to 1249.6℃. This lead to sintering. Second, the temperature of reduction furnace is too high, which may lead to sintering. Thirdly, the level of liquid magnesium may lead to sintering. In order to verify the results of theoretical analysis, experiments about reducing feed speed of material, multi-fabric, reducing the level ofliquid and cooling conditions of low feed speed are designed and implemented.The results showed that the feed speed and the portion of feed are greater impact on the compactness of titanium sponge than the level ofliquid was little. The average barrelrate increased3.6% and 4.0% under the conditions of reducing feed speed and laying more material pot. As to the condition of reducingliquid level by 150 mm, the average barrel rate increased2.2%. But reducing temperature under reducing feed speed had no effect. In order to checkindustrial test, products yield, granularity, picking titanium, components and Brinell hardness was analyzed.The average barrel filling rate reached 62.4%. by some improving methods and laythefoundationforfurtherindustrial experiments.